./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 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/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_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b05b18c0458ef705f828769f88cc2a590589ce4d5c3f0e48f99be90a949f7ed4 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:59:23,840 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:59:23,843 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:59:23,900 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:59:23,900 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:59:23,905 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:59:23,907 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:59:23,911 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:59:23,914 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:59:23,920 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:59:23,921 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:59:23,923 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:59:23,924 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:59:23,927 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:59:23,929 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:59:23,934 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:59:23,935 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:59:23,937 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:59:23,940 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:59:23,948 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:59:23,950 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:59:23,952 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:59:23,955 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:59:23,956 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:59:23,965 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:59:23,965 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:59:23,966 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:59:23,968 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:59:23,969 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:59:23,970 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:59:23,971 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:59:23,972 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:59:23,974 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:59:23,975 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:59:23,977 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:59:23,977 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:59:23,978 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:59:23,979 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:59:23,979 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:59:23,980 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:59:23,981 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:59:23,982 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 19:59:24,025 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:59:24,025 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:59:24,026 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:59:24,026 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:59:24,033 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:59:24,034 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:59:24,034 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:59:24,034 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:59:24,034 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:59:24,035 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 19:59:24,036 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:59:24,036 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:59:24,036 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 19:59:24,037 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 19:59:24,037 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:59:24,037 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 19:59:24,037 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 19:59:24,038 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 19:59:24,038 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:59:24,039 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 19:59:24,039 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:59:24,039 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 19:59:24,039 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:59:24,040 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:59:24,040 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:59:24,040 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:59:24,042 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 19:59:24,042 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:59:24,042 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:59:24,043 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:59:24,043 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:59:24,043 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:59:24,044 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:59:24,044 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:59:24,044 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:59:24,044 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:59:24,045 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 19:59:24,045 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 19:59:24,045 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:59:24,045 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:59:24,046 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:59:24,046 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_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b05b18c0458ef705f828769f88cc2a590589ce4d5c3f0e48f99be90a949f7ed4 [2021-11-25 19:59:24,375 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:59:24,398 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:59:24,401 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:59:24,402 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:59:24,417 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:59:24,419 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i [2021-11-25 19:59:24,498 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/data/5b5af9c1d/3829ac43d6c645c8a5c594fc044ff5fa/FLAGfbf0aabe8 [2021-11-25 19:59:25,128 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:59:25,129 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i [2021-11-25 19:59:25,151 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/data/5b5af9c1d/3829ac43d6c645c8a5c594fc044ff5fa/FLAGfbf0aabe8 [2021-11-25 19:59:25,386 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/data/5b5af9c1d/3829ac43d6c645c8a5c594fc044ff5fa [2021-11-25 19:59:25,389 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:59:25,390 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:59:25,401 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:59:25,401 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:59:25,405 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:59:25,405 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:59:25" (1/1) ... [2021-11-25 19:59:25,407 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49615588 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:59:25, skipping insertion in model container [2021-11-25 19:59:25,407 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:59:25" (1/1) ... [2021-11-25 19:59:25,414 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:59:25,466 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:59:25,815 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_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i[22534,22547] [2021-11-25 19:59:25,819 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_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i[22606,22619] [2021-11-25 19:59:25,820 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_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i[22746,22759] [2021-11-25 19:59:25,821 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_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i[22820,22833] [2021-11-25 19:59:25,826 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:59:25,834 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:59:25,874 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_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i[22534,22547] [2021-11-25 19:59:25,875 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_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i[22606,22619] [2021-11-25 19:59:25,877 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_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i[22746,22759] [2021-11-25 19:59:25,878 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_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i[22820,22833] [2021-11-25 19:59:25,881 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:59:25,910 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:59:25,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:59:25 WrapperNode [2021-11-25 19:59:25,911 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:59:25,912 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:59:25,912 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:59:25,913 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:59:25,921 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:59:25" (1/1) ... [2021-11-25 19:59:25,941 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:59:25" (1/1) ... [2021-11-25 19:59:25,983 INFO L137 Inliner]: procedures = 119, calls = 36, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 122 [2021-11-25 19:59:25,983 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:59:25,984 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:59:25,984 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:59:25,985 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:59:25,993 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:59:25" (1/1) ... [2021-11-25 19:59:25,994 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:59:25" (1/1) ... [2021-11-25 19:59:26,006 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:59:25" (1/1) ... [2021-11-25 19:59:26,007 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:59:25" (1/1) ... [2021-11-25 19:59:26,015 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:59:25" (1/1) ... [2021-11-25 19:59:26,020 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:59:25" (1/1) ... [2021-11-25 19:59:26,022 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:59:25" (1/1) ... [2021-11-25 19:59:26,025 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:59:26,026 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:59:26,026 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:59:26,026 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:59:26,027 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:59:25" (1/1) ... [2021-11-25 19:59:26,041 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:59:26,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:59:26,065 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:59:26,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:59:26,118 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 19:59:26,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 19:59:26,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 19:59:26,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:59:26,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 19:59:26,118 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 19:59:26,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 19:59:26,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 19:59:26,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:59:26,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:59:26,214 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:59:26,215 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:59:26,405 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:59:26,460 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:59:26,460 INFO L301 CfgBuilder]: Removed 11 assume(true) statements. [2021-11-25 19:59:26,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:59:26 BoogieIcfgContainer [2021-11-25 19:59:26,462 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:59:26,464 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:59:26,464 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:59:26,480 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:59:26,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:59:25" (1/3) ... [2021-11-25 19:59:26,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@721ffc6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:59:26, skipping insertion in model container [2021-11-25 19:59:26,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:59:25" (2/3) ... [2021-11-25 19:59:26,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@721ffc6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:59:26, skipping insertion in model container [2021-11-25 19:59:26,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:59:26" (3/3) ... [2021-11-25 19:59:26,483 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-rb-sentinel-1.i [2021-11-25 19:59:26,488 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:59:26,488 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-25 19:59:26,578 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:59:26,584 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 19:59:26,584 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-25 19:59:26,599 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 26 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:59:26,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-25 19:59:26,605 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:59:26,605 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-25 19:59:26,606 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)] === [2021-11-25 19:59:26,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:59:26,611 INFO L85 PathProgramCache]: Analyzing trace with hash 153922345, now seen corresponding path program 1 times [2021-11-25 19:59:26,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:59:26,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513159881] [2021-11-25 19:59:26,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:59:26,622 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:59:26,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:59:26,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:59:26,866 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:59:26,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513159881] [2021-11-25 19:59:26,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513159881] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:59:26,868 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:59:26,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 19:59:26,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299267312] [2021-11-25 19:59:26,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:59:26,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-25 19:59:26,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:59:26,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-25 19:59:26,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 19:59:26,904 INFO L87 Difference]: Start difference. First operand has 27 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 26 states have internal predecessors, (43), 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 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:59:26,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:59:26,956 INFO L93 Difference]: Finished difference Result 51 states and 81 transitions. [2021-11-25 19:59:26,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 19:59:26,958 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2021-11-25 19:59:26,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:59:26,966 INFO L225 Difference]: With dead ends: 51 [2021-11-25 19:59:26,967 INFO L226 Difference]: Without dead ends: 25 [2021-11-25 19:59:26,969 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 19:59:26,973 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:59:26,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:59:26,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-11-25 19:59:27,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-11-25 19:59:27,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 24 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) [2021-11-25 19:59:27,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2021-11-25 19:59:27,007 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 5 [2021-11-25 19:59:27,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:59:27,007 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2021-11-25 19:59:27,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:59:27,007 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2021-11-25 19:59:27,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-25 19:59:27,008 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:59:27,008 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-25 19:59:27,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 19:59:27,008 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)] === [2021-11-25 19:59:27,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:59:27,009 INFO L85 PathProgramCache]: Analyzing trace with hash 464256366, now seen corresponding path program 1 times [2021-11-25 19:59:27,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:59:27,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557141723] [2021-11-25 19:59:27,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:59:27,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:59:27,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:59:27,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:59:27,121 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:59:27,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557141723] [2021-11-25 19:59:27,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557141723] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:59:27,121 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:59:27,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:59:27,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319870897] [2021-11-25 19:59:27,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:59:27,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:59:27,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:59:27,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:59:27,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:59:27,125 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 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) [2021-11-25 19:59:27,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:59:27,216 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2021-11-25 19:59:27,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 19:59:27,217 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 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 [2021-11-25 19:59:27,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:59:27,218 INFO L225 Difference]: With dead ends: 31 [2021-11-25 19:59:27,219 INFO L226 Difference]: Without dead ends: 29 [2021-11-25 19:59:27,219 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:59:27,221 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 35 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:59:27,222 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 24 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:59:27,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-11-25 19:59:27,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 23. [2021-11-25 19:59:27,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 20 states have (on average 1.25) internal successors, (25), 22 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:59:27,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2021-11-25 19:59:27,227 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 6 [2021-11-25 19:59:27,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:59:27,228 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2021-11-25 19:59:27,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 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) [2021-11-25 19:59:27,228 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2021-11-25 19:59:27,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-25 19:59:27,229 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:59:27,229 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:59:27,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 19:59:27,230 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)] === [2021-11-25 19:59:27,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:59:27,231 INFO L85 PathProgramCache]: Analyzing trace with hash 870651803, now seen corresponding path program 1 times [2021-11-25 19:59:27,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:59:27,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225140411] [2021-11-25 19:59:27,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:59:27,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:59:27,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:59:27,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:59:27,364 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:59:27,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225140411] [2021-11-25 19:59:27,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225140411] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:59:27,365 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:59:27,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:59:27,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807772687] [2021-11-25 19:59:27,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:59:27,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 19:59:27,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:59:27,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 19:59:27,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:59:27,368 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 6 states, 6 states have (on average 1.5) 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) [2021-11-25 19:59:27,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:59:27,599 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2021-11-25 19:59:27,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:59:27,599 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) 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 [2021-11-25 19:59:27,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:59:27,601 INFO L225 Difference]: With dead ends: 51 [2021-11-25 19:59:27,601 INFO L226 Difference]: Without dead ends: 49 [2021-11-25 19:59:27,602 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:59:27,603 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 39 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:59:27,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 56 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:59:27,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-11-25 19:59:27,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 30. [2021-11-25 19:59:27,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 29 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) [2021-11-25 19:59:27,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2021-11-25 19:59:27,612 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 9 [2021-11-25 19:59:27,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:59:27,613 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2021-11-25 19:59:27,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) 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) [2021-11-25 19:59:27,613 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2021-11-25 19:59:27,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-25 19:59:27,614 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:59:27,614 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:59:27,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 19:59:27,615 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)] === [2021-11-25 19:59:27,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:59:27,616 INFO L85 PathProgramCache]: Analyzing trace with hash 917959806, now seen corresponding path program 1 times [2021-11-25 19:59:27,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:59:27,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552571629] [2021-11-25 19:59:27,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:59:27,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:59:27,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:59:28,098 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:59:28,098 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:59:28,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552571629] [2021-11-25 19:59:28,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552571629] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:59:28,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033870647] [2021-11-25 19:59:28,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:59:28,099 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:59:28,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:59:28,105 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:59:28,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 19:59:28,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:59:28,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-25 19:59:28,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:59:28,420 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:59:28,425 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 15 [2021-11-25 19:59:28,454 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 [2021-11-25 19:59:28,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:28,729 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 180 treesize of output 174 [2021-11-25 19:59:28,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:28,761 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 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 154 treesize of output 163 [2021-11-25 19:59:28,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:28,794 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 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 142 treesize of output 151 [2021-11-25 19:59:28,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:28,846 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 140 treesize of output 152 [2021-11-25 19:59:28,943 INFO L354 Elim1Store]: treesize reduction 81, result has 30.8 percent of original size [2021-11-25 19:59:28,944 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 136 treesize of output 166 [2021-11-25 19:59:29,022 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:59:29,022 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 111 treesize of output 122 [2021-11-25 19:59:29,272 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-11-25 19:59:29,273 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 20 treesize of output 26 [2021-11-25 19:59:29,392 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 23 treesize of output 28 [2021-11-25 19:59:29,398 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Should have been eliminated by DER [2021-11-25 19:59:29,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [640227248] [2021-11-25 19:59:29,428 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-25 19:59:29,428 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:59:29,433 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:59:29,438 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:59:29,439 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:59:29,492 FATAL L? ?]: Ignoring exception! java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@3b475e5a at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker.assertLhs(IncrementalPlicationChecker.java:103) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker.checkPlication(IncrementalPlicationChecker.java:135) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.ArrayIndexEqualityManager.(ArrayIndexEqualityManager.java:92) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:350) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:184) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne3(DualJunctionSaa.java:166) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne2(DualJunctionSaa.java:154) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne1(DualJunctionSaa.java:142) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne0(DualJunctionSaa.java:124) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne(DualJunctionSaa.java:110) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryExhaustivelyToEliminate(DualJunctionSaa.java:95) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:90) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:903) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:865) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:783) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective2(QuantifierPusher.java:425) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:355) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:162) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:243) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:233) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:285) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostcondition(PredicateTransformer.java:131) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:119) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) 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) [2021-11-25 19:59:29,501 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:59:29,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-11-25 19:59:29,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350029851] [2021-11-25 19:59:29,502 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-25 19:59:29,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 19:59:29,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:59:29,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 19:59:29,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:59:29,505 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:59:29,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 19:59:29,507 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:59:29,512 INFO L933 BasicCegarLoop]: 0 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, 0 SdHoareTripleChecker+Invalid, 1 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 [2021-11-25 19:59:29,513 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:59:29,553 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 19:59:29,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:59:29,741 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@3b475e5a at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.assertCodeBlock(IncrementalHoareTripleChecker.java:360) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.prepareAssertionStackAndAddTransition(IncrementalHoareTripleChecker.java:206) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkInternal(IncrementalHoareTripleChecker.java:131) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.checkInternal(ChainingHoareTripleChecker.java:455) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.checkInternal(ChainingHoareTripleChecker.java:103) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkInternal(CachingHoareTripleChecker.java:95) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$InternalSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:357) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.chooseFalseSuccessor2(BasicAbstractInterpolantAutomaton.java:107) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:73) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1058) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:960) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:868) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:784) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) 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) [2021-11-25 19:59:29,744 INFO L158 Benchmark]: Toolchain (without parser) took 4353.70ms. Allocated memory was 94.4MB in the beginning and 151.0MB in the end (delta: 56.6MB). Free memory was 57.6MB in the beginning and 99.5MB in the end (delta: -42.0MB). Peak memory consumption was 15.4MB. Max. memory is 16.1GB. [2021-11-25 19:59:29,744 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 94.4MB. Free memory is still 75.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 19:59:29,745 INFO L158 Benchmark]: CACSL2BoogieTranslator took 510.39ms. Allocated memory was 94.4MB in the beginning and 125.8MB in the end (delta: 31.5MB). Free memory was 57.4MB in the beginning and 94.6MB in the end (delta: -37.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-25 19:59:29,745 INFO L158 Benchmark]: Boogie Procedure Inliner took 71.44ms. Allocated memory is still 125.8MB. Free memory was 94.6MB in the beginning and 92.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 19:59:29,746 INFO L158 Benchmark]: Boogie Preprocessor took 41.09ms. Allocated memory is still 125.8MB. Free memory was 92.5MB in the beginning and 90.6MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 19:59:29,746 INFO L158 Benchmark]: RCFGBuilder took 436.50ms. Allocated memory is still 125.8MB. Free memory was 90.6MB in the beginning and 72.0MB in the end (delta: 18.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2021-11-25 19:59:29,747 INFO L158 Benchmark]: TraceAbstraction took 3279.19ms. Allocated memory was 125.8MB in the beginning and 151.0MB in the end (delta: 25.2MB). Free memory was 71.5MB in the beginning and 99.5MB in the end (delta: -28.0MB). Peak memory consumption was 1.1MB. Max. memory is 16.1GB. [2021-11-25 19:59:29,749 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 94.4MB. Free memory is still 75.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 510.39ms. Allocated memory was 94.4MB in the beginning and 125.8MB in the end (delta: 31.5MB). Free memory was 57.4MB in the beginning and 94.6MB in the end (delta: -37.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 71.44ms. Allocated memory is still 125.8MB. Free memory was 94.6MB in the beginning and 92.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.09ms. Allocated memory is still 125.8MB. Free memory was 92.5MB in the beginning and 90.6MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 436.50ms. Allocated memory is still 125.8MB. Free memory was 90.6MB in the beginning and 72.0MB in the end (delta: 18.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 3279.19ms. Allocated memory was 125.8MB in the beginning and 151.0MB in the end (delta: 25.2MB). Free memory was 71.5MB in the beginning and 99.5MB in the end (delta: -28.0MB). Peak memory consumption was 1.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@3b475e5a de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@3b475e5a: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-25 19:59:29,806 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/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_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/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_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b05b18c0458ef705f828769f88cc2a590589ce4d5c3f0e48f99be90a949f7ed4 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:59:32,231 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:59:32,233 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:59:32,288 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:59:32,289 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:59:32,293 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:59:32,295 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:59:32,300 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:59:32,303 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:59:32,310 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:59:32,312 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:59:32,314 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:59:32,314 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:59:32,317 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:59:32,319 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:59:32,323 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:59:32,325 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:59:32,326 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:59:32,328 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:59:32,339 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:59:32,341 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:59:32,342 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:59:32,345 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:59:32,347 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:59:32,356 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:59:32,356 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:59:32,357 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:59:32,358 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:59:32,359 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:59:32,360 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:59:32,360 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:59:32,361 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:59:32,363 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:59:32,364 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:59:32,366 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:59:32,366 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:59:32,367 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:59:32,368 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:59:32,368 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:59:32,370 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:59:32,371 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:59:32,371 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-25 19:59:32,416 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:59:32,416 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:59:32,417 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:59:32,417 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:59:32,418 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:59:32,418 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:59:32,418 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:59:32,419 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:59:32,420 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:59:32,420 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:59:32,421 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:59:32,421 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:59:32,422 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:59:32,423 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 19:59:32,423 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 19:59:32,423 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:59:32,423 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:59:32,423 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:59:32,424 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:59:32,424 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-25 19:59:32,424 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-25 19:59:32,424 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-25 19:59:32,424 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 19:59:32,424 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:59:32,425 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:59:32,425 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:59:32,425 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:59:32,425 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-25 19:59:32,425 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:59:32,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:59:32,426 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:59:32,426 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:59:32,427 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:59:32,427 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-25 19:59:32,427 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-25 19:59:32,427 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:59:32,427 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:59:32,428 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:59:32,428 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_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b05b18c0458ef705f828769f88cc2a590589ce4d5c3f0e48f99be90a949f7ed4 [2021-11-25 19:59:32,834 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:59:32,856 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:59:32,858 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:59:32,860 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:59:32,860 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:59:32,862 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i [2021-11-25 19:59:32,937 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/data/8302a45f7/2d0f06c0988a4066b921a8c7f4ed1693/FLAG2d92c81b3 [2021-11-25 19:59:33,522 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:59:33,523 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i [2021-11-25 19:59:33,540 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/data/8302a45f7/2d0f06c0988a4066b921a8c7f4ed1693/FLAG2d92c81b3 [2021-11-25 19:59:33,787 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/data/8302a45f7/2d0f06c0988a4066b921a8c7f4ed1693 [2021-11-25 19:59:33,791 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:59:33,793 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:59:33,796 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:59:33,796 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:59:33,800 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:59:33,802 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:59:33" (1/1) ... [2021-11-25 19:59:33,804 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33841c92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:59:33, skipping insertion in model container [2021-11-25 19:59:33,805 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:59:33" (1/1) ... [2021-11-25 19:59:33,812 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:59:33,876 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:59:34,230 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_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i[22534,22547] [2021-11-25 19:59:34,235 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_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i[22606,22619] [2021-11-25 19:59:34,239 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_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i[22746,22759] [2021-11-25 19:59:34,241 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_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i[22820,22833] [2021-11-25 19:59:34,274 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:59:34,290 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:59:34,352 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_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i[22534,22547] [2021-11-25 19:59:34,363 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_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i[22606,22619] [2021-11-25 19:59:34,366 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_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i[22746,22759] [2021-11-25 19:59:34,369 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_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i[22820,22833] [2021-11-25 19:59:34,375 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:59:34,416 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:59:34,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:59:34 WrapperNode [2021-11-25 19:59:34,416 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:59:34,417 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:59:34,418 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:59:34,418 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:59:34,426 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:59:34" (1/1) ... [2021-11-25 19:59:34,475 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:59:34" (1/1) ... [2021-11-25 19:59:34,512 INFO L137 Inliner]: procedures = 122, calls = 36, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 121 [2021-11-25 19:59:34,512 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:59:34,513 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:59:34,513 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:59:34,514 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:59:34,523 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:59:34" (1/1) ... [2021-11-25 19:59:34,526 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:59:34" (1/1) ... [2021-11-25 19:59:34,535 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:59:34" (1/1) ... [2021-11-25 19:59:34,536 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:59:34" (1/1) ... [2021-11-25 19:59:34,557 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:59:34" (1/1) ... [2021-11-25 19:59:34,567 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:59:34" (1/1) ... [2021-11-25 19:59:34,572 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:59:34" (1/1) ... [2021-11-25 19:59:34,580 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:59:34,585 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:59:34,586 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:59:34,586 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:59:34,587 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:59:34" (1/1) ... [2021-11-25 19:59:34,594 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:59:34,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:59:34,622 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:59:34,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:59:34,671 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-25 19:59:34,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 19:59:34,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:59:34,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 19:59:34,672 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 19:59:34,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 19:59:34,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-25 19:59:34,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-25 19:59:34,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:59:34,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:59:34,816 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:59:34,818 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:59:35,237 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:59:35,243 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:59:35,243 INFO L301 CfgBuilder]: Removed 11 assume(true) statements. [2021-11-25 19:59:35,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:59:35 BoogieIcfgContainer [2021-11-25 19:59:35,245 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:59:35,248 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:59:35,248 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:59:35,251 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:59:35,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:59:33" (1/3) ... [2021-11-25 19:59:35,252 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@138fdc88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:59:35, skipping insertion in model container [2021-11-25 19:59:35,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:59:34" (2/3) ... [2021-11-25 19:59:35,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@138fdc88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:59:35, skipping insertion in model container [2021-11-25 19:59:35,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:59:35" (3/3) ... [2021-11-25 19:59:35,254 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-rb-sentinel-1.i [2021-11-25 19:59:35,260 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:59:35,260 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-25 19:59:35,309 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:59:35,317 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 19:59:35,317 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-25 19:59:35,332 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) [2021-11-25 19:59:35,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-25 19:59:35,337 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:59:35,338 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-25 19:59:35,338 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)] === [2021-11-25 19:59:35,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:59:35,344 INFO L85 PathProgramCache]: Analyzing trace with hash 889937798, now seen corresponding path program 1 times [2021-11-25 19:59:35,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:59:35,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1997815071] [2021-11-25 19:59:35,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:59:35,358 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:59:35,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:59:35,363 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:59:35,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-25 19:59:35,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:59:35,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-25 19:59:35,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:59:35,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:59:35,544 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:59:35,544 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:59:35,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1997815071] [2021-11-25 19:59:35,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1997815071] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:59:35,546 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:59:35,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 19:59:35,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50629344] [2021-11-25 19:59:35,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:59:35,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-25 19:59:35,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:59:35,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-25 19:59:35,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 19:59:35,623 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) [2021-11-25 19:59:35,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:59:35,643 INFO L93 Difference]: Finished difference Result 60 states and 97 transitions. [2021-11-25 19:59:35,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 19:59:35,646 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 [2021-11-25 19:59:35,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:59:35,656 INFO L225 Difference]: With dead ends: 60 [2021-11-25 19:59:35,656 INFO L226 Difference]: Without dead ends: 26 [2021-11-25 19:59:35,659 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 [2021-11-25 19:59:35,675 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 [2021-11-25 19:59:35,677 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] [2021-11-25 19:59:35,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-11-25 19:59:35,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-11-25 19:59:35,718 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) [2021-11-25 19:59:35,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2021-11-25 19:59:35,720 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 6 [2021-11-25 19:59:35,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:59:35,721 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2021-11-25 19:59:35,721 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) [2021-11-25 19:59:35,721 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2021-11-25 19:59:35,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-25 19:59:35,722 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:59:35,722 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-25 19:59:35,734 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-25 19:59:35,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:59:35,926 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)] === [2021-11-25 19:59:35,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:59:35,927 INFO L85 PathProgramCache]: Analyzing trace with hash 889639888, now seen corresponding path program 1 times [2021-11-25 19:59:35,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:59:35,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [983865986] [2021-11-25 19:59:35,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:59:35,934 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:59:35,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:59:35,935 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:59:35,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-25 19:59:36,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:59:36,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 19:59:36,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:59:36,117 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 [2021-11-25 19:59:36,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:59:36,189 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:59:36,190 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:59:36,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [983865986] [2021-11-25 19:59:36,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [983865986] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:59:36,190 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:59:36,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:59:36,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624605022] [2021-11-25 19:59:36,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:59:36,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:59:36,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:59:36,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:59:36,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:59:36,194 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) [2021-11-25 19:59:36,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:59:36,394 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2021-11-25 19:59:36,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 19:59:36,397 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 [2021-11-25 19:59:36,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:59:36,398 INFO L225 Difference]: With dead ends: 31 [2021-11-25 19:59:36,398 INFO L226 Difference]: Without dead ends: 29 [2021-11-25 19:59:36,399 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 [2021-11-25 19:59:36,400 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 36 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:59:36,401 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 27 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:59:36,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-11-25 19:59:36,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 24. [2021-11-25 19:59:36,406 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) [2021-11-25 19:59:36,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2021-11-25 19:59:36,407 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 6 [2021-11-25 19:59:36,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:59:36,407 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2021-11-25 19:59:36,407 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) [2021-11-25 19:59:36,407 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2021-11-25 19:59:36,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-25 19:59:36,408 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:59:36,408 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:59:36,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-25 19:59:36,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:59:36,627 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)] === [2021-11-25 19:59:36,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:59:36,628 INFO L85 PathProgramCache]: Analyzing trace with hash -977335784, now seen corresponding path program 1 times [2021-11-25 19:59:36,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:59:36,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [974407671] [2021-11-25 19:59:36,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:59:36,629 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:59:36,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:59:36,631 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:59:36,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-25 19:59:36,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:59:36,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-25 19:59:36,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:59:36,751 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 [2021-11-25 19:59:36,871 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 [2021-11-25 19:59:36,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:59:36,884 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:59:36,884 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:59:36,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [974407671] [2021-11-25 19:59:36,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [974407671] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:59:36,885 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:59:36,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:59:36,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087971679] [2021-11-25 19:59:36,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:59:36,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:59:36,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:59:36,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:59:36,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:59:36,887 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) [2021-11-25 19:59:37,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:59:37,471 INFO L93 Difference]: Finished difference Result 53 states and 62 transitions. [2021-11-25 19:59:37,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:59:37,473 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 [2021-11-25 19:59:37,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:59:37,474 INFO L225 Difference]: With dead ends: 53 [2021-11-25 19:59:37,474 INFO L226 Difference]: Without dead ends: 51 [2021-11-25 19:59:37,475 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 [2021-11-25 19:59:37,476 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 [2021-11-25 19:59:37,480 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] [2021-11-25 19:59:37,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-11-25 19:59:37,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 32. [2021-11-25 19:59:37,490 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) [2021-11-25 19:59:37,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2021-11-25 19:59:37,493 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 9 [2021-11-25 19:59:37,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:59:37,494 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2021-11-25 19:59:37,494 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) [2021-11-25 19:59:37,494 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2021-11-25 19:59:37,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-25 19:59:37,495 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:59:37,495 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:59:37,512 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-25 19:59:37,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:59:37,709 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)] === [2021-11-25 19:59:37,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:59:37,710 INFO L85 PathProgramCache]: Analyzing trace with hash -822388269, now seen corresponding path program 1 times [2021-11-25 19:59:37,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:59:37,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1678560815] [2021-11-25 19:59:37,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:59:37,711 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:59:37,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:59:37,712 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:59:37,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-25 19:59:37,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:59:37,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-25 19:59:37,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:59:38,023 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 [2021-11-25 19:59:38,054 INFO L354 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2021-11-25 19:59:38,055 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 [2021-11-25 19:59:38,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:38,148 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2021-11-25 19:59:38,173 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:59:38,175 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 [2021-11-25 19:59:38,196 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 [2021-11-25 19:59:38,238 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 19:59:38,239 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 [2021-11-25 19:59:38,379 INFO L354 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2021-11-25 19:59:38,379 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 [2021-11-25 19:59:38,393 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-11-25 19:59:38,433 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 [2021-11-25 19:59:38,580 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 [2021-11-25 19:59:38,597 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:59:38,597 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:59:38,695 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:59:38,696 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 [2021-11-25 19:59:38,720 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 [2021-11-25 19:59:38,865 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 [2021-11-25 19:59:38,950 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-25 19:59:38,950 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 [2021-11-25 19:59:38,952 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-11-25 19:59:38,953 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:59:38,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1678560815] [2021-11-25 19:59:38,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1678560815] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:59:38,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1617746155] [2021-11-25 19:59:38,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:59:38,955 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:59:38,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:59:38,973 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:59:38,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2021-11-25 19:59:39,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:59:39,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-25 19:59:39,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:59:39,250 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 [2021-11-25 19:59:39,288 INFO L354 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2021-11-25 19:59:39,289 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 [2021-11-25 19:59:39,335 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 19:59:39,335 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 [2021-11-25 19:59:39,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:39,352 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 [2021-11-25 19:59:39,360 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 [2021-11-25 19:59:39,436 INFO L354 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2021-11-25 19:59:39,437 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 [2021-11-25 19:59:39,446 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-11-25 19:59:39,479 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:59:39,551 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 [2021-11-25 19:59:39,558 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:59:39,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:59:39,602 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:59:39,603 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 [2021-11-25 19:59:39,622 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 [2021-11-25 19:59:39,732 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 [2021-11-25 19:59:39,775 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-25 19:59:39,775 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 24 treesize of output 1 [2021-11-25 19:59:39,777 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-11-25 19:59:39,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1617746155] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:59:39,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450951516] [2021-11-25 19:59:39,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:59:39,778 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:59:39,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:59:39,782 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:59:39,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-25 19:59:39,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:59:39,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-25 19:59:39,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:59:39,943 INFO L354 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2021-11-25 19:59:39,944 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 [2021-11-25 19:59:39,979 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 [2021-11-25 19:59:40,022 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-25 19:59:40,023 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 [2021-11-25 19:59:40,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:40,049 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 [2021-11-25 19:59:40,055 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 [2021-11-25 19:59:40,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:40,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:40,132 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 [2021-11-25 19:59:40,160 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-11-25 19:59:40,161 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 [2021-11-25 19:59:40,214 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 [2021-11-25 19:59:40,220 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:59:40,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:59:40,275 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 [2021-11-25 19:59:40,451 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 [2021-11-25 19:59:40,517 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-25 19:59:40,520 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 [2021-11-25 19:59:40,522 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-11-25 19:59:40,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1450951516] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:59:40,523 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-25 19:59:40,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7, 7] total 16 [2021-11-25 19:59:40,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26295036] [2021-11-25 19:59:40,523 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-25 19:59:40,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-25 19:59:40,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:59:40,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-25 19:59:40,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=68, Unknown=6, NotChecked=126, Total=240 [2021-11-25 19:59:40,529 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) [2021-11-25 19:59:40,788 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 [2021-11-25 19:59:40,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:59:40,997 INFO L93 Difference]: Finished difference Result 65 states and 75 transitions. [2021-11-25 19:59:40,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 19:59:40,998 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 [2021-11-25 19:59:40,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:59:40,999 INFO L225 Difference]: With dead ends: 65 [2021-11-25 19:59:40,999 INFO L226 Difference]: Without dead ends: 63 [2021-11-25 19:59:41,000 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=110, Unknown=7, NotChecked=196, Total=380 [2021-11-25 19:59:41,001 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 62 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:59:41,001 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 159 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 66 Invalid, 0 Unknown, 247 Unchecked, 0.4s Time] [2021-11-25 19:59:41,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-11-25 19:59:41,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 32. [2021-11-25 19:59:41,007 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) [2021-11-25 19:59:41,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2021-11-25 19:59:41,008 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 11 [2021-11-25 19:59:41,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:59:41,009 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2021-11-25 19:59:41,009 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) [2021-11-25 19:59:41,009 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2021-11-25 19:59:41,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-25 19:59:41,010 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:59:41,010 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:59:41,020 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (6)] Ended with exit code 0 [2021-11-25 19:59:41,232 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-25 19:59:41,422 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-25 19:59:41,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:59:41,613 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)] === [2021-11-25 19:59:41,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:59:41,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1674631615, now seen corresponding path program 1 times [2021-11-25 19:59:41,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:59:41,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2021060044] [2021-11-25 19:59:41,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:59:41,614 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:59:41,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:59:41,618 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:59:41,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-25 19:59:41,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:59:41,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-25 19:59:41,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:59:41,771 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 [2021-11-25 19:59:41,871 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 [2021-11-25 19:59:41,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:59:41,885 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:59:41,885 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:59:41,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2021060044] [2021-11-25 19:59:41,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2021060044] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:59:41,885 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:59:41,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:59:41,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400711793] [2021-11-25 19:59:41,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:59:41,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:59:41,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:59:41,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:59:41,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:59:41,887 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) [2021-11-25 19:59:42,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:59:42,561 INFO L93 Difference]: Finished difference Result 69 states and 80 transitions. [2021-11-25 19:59:42,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:59:42,562 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 [2021-11-25 19:59:42,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:59:42,564 INFO L225 Difference]: With dead ends: 69 [2021-11-25 19:59:42,564 INFO L226 Difference]: Without dead ends: 57 [2021-11-25 19:59:42,564 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 [2021-11-25 19:59:42,565 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 23 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 19:59:42,566 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 89 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 19:59:42,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-11-25 19:59:42,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 41. [2021-11-25 19:59:42,572 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) [2021-11-25 19:59:42,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2021-11-25 19:59:42,577 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 13 [2021-11-25 19:59:42,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:59:42,577 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2021-11-25 19:59:42,577 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) [2021-11-25 19:59:42,578 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2021-11-25 19:59:42,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-25 19:59:42,579 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:59:42,579 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:59:42,595 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-25 19:59:42,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:59:42,792 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)] === [2021-11-25 19:59:42,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:59:42,792 INFO L85 PathProgramCache]: Analyzing trace with hash 2053285582, now seen corresponding path program 2 times [2021-11-25 19:59:42,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:59:42,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1187697592] [2021-11-25 19:59:42,793 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-25 19:59:42,793 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:59:42,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:59:42,794 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:59:42,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-25 19:59:43,060 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-25 19:59:43,060 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:59:43,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-25 19:59:43,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:59:43,114 INFO L354 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2021-11-25 19:59:43,115 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 [2021-11-25 19:59:43,138 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 [2021-11-25 19:59:43,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:43,177 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 [2021-11-25 19:59:43,208 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:59:43,208 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 [2021-11-25 19:59:43,227 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 [2021-11-25 19:59:43,267 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-25 19:59:43,267 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 [2021-11-25 19:59:43,375 INFO L354 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-11-25 19:59:43,375 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 [2021-11-25 19:59:43,394 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 [2021-11-25 19:59:43,433 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-25 19:59:43,433 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 [2021-11-25 19:59:43,507 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 19:59:43,508 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 [2021-11-25 19:59:43,540 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:59:43,540 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 [2021-11-25 19:59:43,636 INFO L354 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2021-11-25 19:59:43,637 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 [2021-11-25 19:59:43,651 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-11-25 19:59:43,670 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 [2021-11-25 19:59:43,776 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 [2021-11-25 19:59:43,795 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:59:43,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:59:43,878 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:59:43,878 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 [2021-11-25 19:59:43,901 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 [2021-11-25 19:59:43,972 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 [2021-11-25 19:59:44,135 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 [2021-11-25 19:59:44,710 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 [2021-11-25 19:59:44,754 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-25 19:59:44,755 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 [2021-11-25 19:59:44,756 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2021-11-25 19:59:44,757 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:59:44,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1187697592] [2021-11-25 19:59:44,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1187697592] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:59:44,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1926655186] [2021-11-25 19:59:44,757 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-25 19:59:44,758 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:59:44,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:59:44,759 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:59:44,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-25 19:59:45,044 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 19:59:45,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670271638] [2021-11-25 19:59:45,045 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-25 19:59:45,045 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:59:45,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:59:45,047 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:59:45,048 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 1 [2021-11-25 19:59:45,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-25 19:59:45,715 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-25 19:59:45,715 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:59:45,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-25 19:59:45,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:59:45,755 INFO L354 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2021-11-25 19:59:45,756 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 [2021-11-25 19:59:45,771 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 [2021-11-25 19:59:45,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:45,790 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 [2021-11-25 19:59:45,807 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:59:45,810 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 [2021-11-25 19:59:45,817 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 [2021-11-25 19:59:45,852 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-25 19:59:45,852 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 [2021-11-25 19:59:45,959 INFO L354 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-11-25 19:59:45,959 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 [2021-11-25 19:59:45,968 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 [2021-11-25 19:59:46,016 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-25 19:59:46,016 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 [2021-11-25 19:59:46,118 INFO L354 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-11-25 19:59:46,119 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 [2021-11-25 19:59:46,142 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 [2021-11-25 19:59:46,165 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 19:59:46,165 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 [2021-11-25 19:59:46,240 INFO L354 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2021-11-25 19:59:46,241 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 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 [2021-11-25 19:59:46,248 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-11-25 19:59:46,274 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 [2021-11-25 19:59:46,326 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 [2021-11-25 19:59:46,331 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:59:46,331 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:59:46,367 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:59:46,367 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 [2021-11-25 19:59:46,387 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 [2021-11-25 19:59:46,455 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 [2021-11-25 19:59:46,606 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 [2021-11-25 19:59:47,160 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 [2021-11-25 19:59:47,209 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-25 19:59:47,209 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 [2021-11-25 19:59:47,211 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2021-11-25 19:59:47,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1670271638] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:59:47,212 INFO L186 FreeRefinementEngine]: Found 0 perfect and 4 imperfect interpolant sequences. [2021-11-25 19:59:47,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8, 9] total 18 [2021-11-25 19:59:47,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432080913] [2021-11-25 19:59:47,212 INFO L85 oduleStraightlineAll]: Using 4 imperfect interpolants to construct interpolant automaton [2021-11-25 19:59:47,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-25 19:59:47,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:59:47,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-25 19:59:47,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=70, Unknown=8, NotChecked=184, Total=306 [2021-11-25 19:59:47,215 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) [2021-11-25 19:59:47,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:59:47,843 INFO L93 Difference]: Finished difference Result 79 states and 91 transitions. [2021-11-25 19:59:47,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-25 19:59:47,844 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 [2021-11-25 19:59:47,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:59:47,845 INFO L225 Difference]: With dead ends: 79 [2021-11-25 19:59:47,845 INFO L226 Difference]: Without dead ends: 77 [2021-11-25 19:59:47,845 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 27 SyntacticMatches, 8 SemanticMatches, 21 ConstructedPredicates, 8 IntricatePredicates, 1 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=83, Invalid=151, Unknown=8, NotChecked=264, Total=506 [2021-11-25 19:59:47,846 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, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:59:47,846 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 227 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 78 Invalid, 0 Unknown, 436 Unchecked, 0.4s Time] [2021-11-25 19:59:47,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-11-25 19:59:47,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 43. [2021-11-25 19:59:47,852 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) [2021-11-25 19:59:47,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 52 transitions. [2021-11-25 19:59:47,853 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 52 transitions. Word has length 13 [2021-11-25 19:59:47,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:59:47,853 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 52 transitions. [2021-11-25 19:59:47,854 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) [2021-11-25 19:59:47,854 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 52 transitions. [2021-11-25 19:59:47,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-25 19:59:47,854 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:59:47,854 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:59:47,870 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-25 19:59:48,092 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-25 19:59:48,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:59:48,271 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)] === [2021-11-25 19:59:48,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:59:48,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1432335088, now seen corresponding path program 1 times [2021-11-25 19:59:48,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:59:48,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [779893596] [2021-11-25 19:59:48,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:59:48,272 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:59:48,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:59:48,273 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:59:48,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-25 19:59:48,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:59:48,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-25 19:59:48,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:59:48,570 INFO L354 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2021-11-25 19:59:48,570 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 [2021-11-25 19:59:48,584 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 [2021-11-25 19:59:48,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:48,622 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 [2021-11-25 19:59:48,644 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:59:48,644 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 [2021-11-25 19:59:48,656 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 [2021-11-25 19:59:48,693 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-25 19:59:48,693 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 [2021-11-25 19:59:48,798 INFO L354 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-11-25 19:59:48,798 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 [2021-11-25 19:59:48,813 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 [2021-11-25 19:59:48,837 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 19:59:48,837 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 [2021-11-25 19:59:48,922 INFO L354 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-11-25 19:59:48,923 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 [2021-11-25 19:59:48,941 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 [2021-11-25 19:59:48,991 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:59:49,008 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-25 19:59:49,009 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 [2021-11-25 19:59:49,097 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 [2021-11-25 19:59:49,116 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:59:49,117 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:59:49,251 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:59:49,251 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 [2021-11-25 19:59:49,269 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 [2021-11-25 19:59:49,332 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 [2021-11-25 19:59:49,539 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 [2021-11-25 19:59:49,575 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-25 19:59:49,576 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 [2021-11-25 19:59:49,578 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2021-11-25 19:59:49,578 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:59:49,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [779893596] [2021-11-25 19:59:49,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [779893596] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:59:49,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [63590244] [2021-11-25 19:59:49,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:59:49,579 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:59:49,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:59:49,581 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:59:49,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-25 19:59:49,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:59:49,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-25 19:59:49,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:59:49,969 INFO L354 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2021-11-25 19:59:49,969 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 [2021-11-25 19:59:49,986 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 [2021-11-25 19:59:50,017 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-25 19:59:50,017 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 [2021-11-25 19:59:50,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:50,036 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 [2021-11-25 19:59:50,041 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 [2021-11-25 19:59:50,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:50,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:50,114 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 [2021-11-25 19:59:50,140 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-11-25 19:59:50,140 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 [2021-11-25 19:59:50,234 INFO L354 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-11-25 19:59:50,234 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 [2021-11-25 19:59:50,255 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 [2021-11-25 19:59:50,280 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:59:50,298 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-25 19:59:50,299 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 [2021-11-25 19:59:50,353 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 [2021-11-25 19:59:50,358 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:59:50,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:59:50,403 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:59:50,403 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 [2021-11-25 19:59:50,420 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 [2021-11-25 19:59:50,483 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 [2021-11-25 19:59:50,682 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 [2021-11-25 19:59:50,724 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-25 19:59:50,724 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 [2021-11-25 19:59:50,726 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2021-11-25 19:59:50,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [63590244] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:59:50,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266017096] [2021-11-25 19:59:50,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:59:50,727 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:59:50,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:59:50,729 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:59:50,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-25 19:59:50,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:59:50,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-25 19:59:50,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:59:50,930 INFO L354 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2021-11-25 19:59:50,930 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 [2021-11-25 19:59:50,949 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 [2021-11-25 19:59:50,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:50,969 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 [2021-11-25 19:59:50,989 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:59:50,989 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 [2021-11-25 19:59:50,995 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 [2021-11-25 19:59:51,025 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-25 19:59:51,025 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 24 treesize of output 31 [2021-11-25 19:59:51,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:51,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:51,089 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 [2021-11-25 19:59:51,107 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-11-25 19:59:51,107 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 [2021-11-25 19:59:51,186 INFO L354 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-11-25 19:59:51,187 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 [2021-11-25 19:59:51,205 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-25 19:59:51,230 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:59:51,248 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-25 19:59:51,248 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 [2021-11-25 19:59:51,300 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 [2021-11-25 19:59:51,305 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:59:51,305 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:59:51,347 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:59:51,347 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 [2021-11-25 19:59:51,364 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 [2021-11-25 19:59:51,427 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 [2021-11-25 19:59:51,627 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 [2021-11-25 19:59:51,678 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-25 19:59:51,679 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 [2021-11-25 19:59:51,680 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2021-11-25 19:59:51,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266017096] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:59:51,681 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-25 19:59:51,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 9, 9] total 22 [2021-11-25 19:59:51,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969588757] [2021-11-25 19:59:51,681 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-25 19:59:51,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-25 19:59:51,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:59:51,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-25 19:59:51,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=119, Unknown=9, NotChecked=270, Total=462 [2021-11-25 19:59:51,683 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) [2021-11-25 19:59:52,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:59:52,491 INFO L93 Difference]: Finished difference Result 84 states and 97 transitions. [2021-11-25 19:59:52,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 19:59:52,492 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 [2021-11-25 19:59:52,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:59:52,493 INFO L225 Difference]: With dead ends: 84 [2021-11-25 19:59:52,493 INFO L226 Difference]: Without dead ends: 82 [2021-11-25 19:59:52,494 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 [2021-11-25 19:59:52,495 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 [2021-11-25 19:59:52,495 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] [2021-11-25 19:59:52,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-11-25 19:59:52,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 43. [2021-11-25 19:59:52,501 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) [2021-11-25 19:59:52,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 52 transitions. [2021-11-25 19:59:52,502 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 52 transitions. Word has length 13 [2021-11-25 19:59:52,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:59:52,502 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 52 transitions. [2021-11-25 19:59:52,503 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) [2021-11-25 19:59:52,503 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 52 transitions. [2021-11-25 19:59:52,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-25 19:59:52,503 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:59:52,504 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:59:52,539 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-25 19:59:52,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-11-25 19:59:52,931 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-11-25 19:59:53,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:59:53,122 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)] === [2021-11-25 19:59:53,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:59:53,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1848654704, now seen corresponding path program 2 times [2021-11-25 19:59:53,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:59:53,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [349259945] [2021-11-25 19:59:53,123 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-25 19:59:53,123 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:59:53,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:59:53,124 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:59:53,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-25 19:59:53,365 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-25 19:59:53,365 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:59:53,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-25 19:59:53,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:59:53,402 INFO L354 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2021-11-25 19:59:53,403 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 [2021-11-25 19:59:53,417 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 [2021-11-25 19:59:53,472 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-25 19:59:53,472 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 [2021-11-25 19:59:53,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:53,487 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 [2021-11-25 19:59:53,492 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 0 case distinctions, treesize of input 16 treesize of output 18 [2021-11-25 19:59:53,533 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 [2021-11-25 19:59:53,587 INFO L354 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-11-25 19:59:53,587 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 [2021-11-25 19:59:53,603 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 [2021-11-25 19:59:53,620 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 19:59:53,621 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 [2021-11-25 19:59:53,699 INFO L354 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2021-11-25 19:59:53,699 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 [2021-11-25 19:59:53,706 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-11-25 19:59:53,721 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:59:53,820 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 [2021-11-25 19:59:53,837 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:59:53,837 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:59:53,912 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:59:53,912 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 22 [2021-11-25 19:59:53,929 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 [2021-11-25 19:59:53,987 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 [2021-11-25 19:59:54,253 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 [2021-11-25 19:59:54,294 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-25 19:59:54,294 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 [2021-11-25 19:59:54,296 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2021-11-25 19:59:54,296 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:59:54,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [349259945] [2021-11-25 19:59:54,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [349259945] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:59:54,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1460831161] [2021-11-25 19:59:54,297 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-25 19:59:54,297 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:59:54,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:59:54,301 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:59:54,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2021-11-25 19:59:54,621 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 19:59:54,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200921951] [2021-11-25 19:59:54,621 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-25 19:59:54,621 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:59:54,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:59:54,622 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:59:54,629 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (16)] Ended with exit code 1 [2021-11-25 19:59:54,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-25 19:59:54,992 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-25 19:59:54,992 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:59:54,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-25 19:59:54,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:59:55,033 INFO L354 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2021-11-25 19:59:55,034 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 [2021-11-25 19:59:55,049 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 [2021-11-25 19:59:55,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:55,083 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 [2021-11-25 19:59:55,103 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:59:55,104 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 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 [2021-11-25 19:59:55,108 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 7 treesize of output 3 [2021-11-25 19:59:55,143 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-25 19:59:55,143 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 [2021-11-25 19:59:55,234 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 [2021-11-25 19:59:55,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:55,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:55,274 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 [2021-11-25 19:59:55,299 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-11-25 19:59:55,300 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 [2021-11-25 19:59:55,371 INFO L354 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2021-11-25 19:59:55,372 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 [2021-11-25 19:59:55,379 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-11-25 19:59:55,395 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:59:55,438 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 [2021-11-25 19:59:55,442 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:59:55,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:59:55,475 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:59:55,475 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 [2021-11-25 19:59:55,488 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 [2021-11-25 19:59:55,544 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 [2021-11-25 19:59:55,801 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 [2021-11-25 19:59:55,838 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-25 19:59:55,838 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 [2021-11-25 19:59:55,840 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2021-11-25 19:59:55,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [200921951] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:59:55,840 INFO L186 FreeRefinementEngine]: Found 0 perfect and 4 imperfect interpolant sequences. [2021-11-25 19:59:55,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8] total 17 [2021-11-25 19:59:55,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850386115] [2021-11-25 19:59:55,841 INFO L85 oduleStraightlineAll]: Using 4 imperfect interpolants to construct interpolant automaton [2021-11-25 19:59:55,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-25 19:59:55,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:59:55,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-25 19:59:55,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=82, Unknown=6, NotChecked=138, Total=272 [2021-11-25 19:59:55,842 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) [2021-11-25 19:59:56,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:59:56,267 INFO L93 Difference]: Finished difference Result 82 states and 95 transitions. [2021-11-25 19:59:56,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 19:59:56,268 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 [2021-11-25 19:59:56,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:59:56,269 INFO L225 Difference]: With dead ends: 82 [2021-11-25 19:59:56,269 INFO L226 Difference]: Without dead ends: 80 [2021-11-25 19:59:56,270 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 [2021-11-25 19:59:56,270 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 [2021-11-25 19:59:56,271 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] [2021-11-25 19:59:56,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-11-25 19:59:56,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 44. [2021-11-25 19:59:56,276 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) [2021-11-25 19:59:56,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 54 transitions. [2021-11-25 19:59:56,277 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 54 transitions. Word has length 13 [2021-11-25 19:59:56,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:59:56,277 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 54 transitions. [2021-11-25 19:59:56,278 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) [2021-11-25 19:59:56,278 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 54 transitions. [2021-11-25 19:59:56,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-25 19:59:56,279 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:59:56,279 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:59:56,318 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2021-11-25 19:59:56,508 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-25 19:59:56,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:59:56,699 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)] === [2021-11-25 19:59:56,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:59:56,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1039308078, now seen corresponding path program 1 times [2021-11-25 19:59:56,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:59:56,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [554961255] [2021-11-25 19:59:56,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:59:56,700 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:59:56,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:59:56,701 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:59:56,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-25 19:59:56,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:59:56,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-25 19:59:56,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:59:56,959 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:59:56,985 INFO L354 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2021-11-25 19:59:56,985 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 [2021-11-25 19:59:57,033 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 19:59:57,033 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 [2021-11-25 19:59:57,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:57,039 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 [2021-11-25 19:59:57,044 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 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 [2021-11-25 19:59:57,070 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 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 [2021-11-25 19:59:57,114 INFO L354 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-11-25 19:59:57,115 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 [2021-11-25 19:59:57,125 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 [2021-11-25 19:59:57,164 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:59:57,176 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-25 19:59:57,177 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 [2021-11-25 19:59:57,254 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 [2021-11-25 19:59:57,270 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:59:57,271 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:59:57,380 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:59:57,380 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 [2021-11-25 19:59:57,393 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 [2021-11-25 19:59:57,473 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 [2021-11-25 19:59:57,521 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-25 19:59:57,521 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 [2021-11-25 19:59:57,523 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2021-11-25 19:59:57,523 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:59:57,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [554961255] [2021-11-25 19:59:57,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [554961255] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:59:57,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1756902781] [2021-11-25 19:59:57,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:59:57,524 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:59:57,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:59:57,529 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:59:57,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-11-25 19:59:57,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:59:57,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-25 19:59:57,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:59:57,803 INFO L354 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2021-11-25 19:59:57,803 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 [2021-11-25 19:59:57,813 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 [2021-11-25 19:59:57,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:57,830 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 [2021-11-25 19:59:57,845 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:59:57,845 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 [2021-11-25 19:59:57,852 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 [2021-11-25 19:59:57,868 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 19:59:57,869 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 [2021-11-25 19:59:57,890 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 [2021-11-25 19:59:57,938 INFO L354 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-11-25 19:59:57,939 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 [2021-11-25 19:59:57,954 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 [2021-11-25 19:59:57,970 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:59:57,982 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-25 19:59:57,982 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 [2021-11-25 19:59:58,036 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 [2021-11-25 19:59:58,040 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:59:58,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:59:58,070 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:59:58,070 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 [2021-11-25 19:59:58,083 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 [2021-11-25 19:59:58,207 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 [2021-11-25 19:59:58,231 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-25 19:59:58,231 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 [2021-11-25 19:59:58,233 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2021-11-25 19:59:58,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1756902781] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:59:58,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183722608] [2021-11-25 19:59:58,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:59:58,234 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:59:58,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:59:58,237 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:59:58,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-25 19:59:58,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:59:58,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-25 19:59:58,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:59:58,467 INFO L354 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2021-11-25 19:59:58,467 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 [2021-11-25 19:59:58,484 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 [2021-11-25 19:59:58,518 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-25 19:59:58,518 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 [2021-11-25 19:59:58,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:58,536 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 [2021-11-25 19:59:58,540 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 [2021-11-25 19:59:58,592 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 [2021-11-25 19:59:58,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:58,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:58,632 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 [2021-11-25 19:59:58,655 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-11-25 19:59:58,656 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 [2021-11-25 19:59:58,678 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 [2021-11-25 19:59:58,716 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 [2021-11-25 19:59:58,719 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:59:58,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:59:58,745 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 [2021-11-25 19:59:58,761 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 [2021-11-25 19:59:58,871 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 [2021-11-25 19:59:58,903 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-25 19:59:58,903 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 [2021-11-25 19:59:58,905 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2021-11-25 19:59:58,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183722608] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:59:58,905 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-25 19:59:58,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 19 [2021-11-25 19:59:58,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245696074] [2021-11-25 19:59:58,905 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-25 19:59:58,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-25 19:59:58,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:59:58,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-25 19:59:58,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=100, Unknown=7, NotChecked=182, Total=342 [2021-11-25 19:59:58,907 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) [2021-11-25 19:59:59,017 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 [2021-11-25 19:59:59,051 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 [2021-11-25 19:59:59,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:59:59,406 INFO L93 Difference]: Finished difference Result 87 states and 104 transitions. [2021-11-25 19:59:59,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-25 19:59:59,406 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 [2021-11-25 19:59:59,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:59:59,407 INFO L225 Difference]: With dead ends: 87 [2021-11-25 19:59:59,407 INFO L226 Difference]: Without dead ends: 85 [2021-11-25 19:59:59,408 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 [2021-11-25 19:59:59,408 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, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:59:59,409 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 237 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 83 Invalid, 0 Unknown, 274 Unchecked, 0.3s Time] [2021-11-25 19:59:59,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-11-25 19:59:59,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 46. [2021-11-25 19:59:59,414 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) [2021-11-25 19:59:59,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 58 transitions. [2021-11-25 19:59:59,415 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 58 transitions. Word has length 13 [2021-11-25 19:59:59,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:59:59,416 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 58 transitions. [2021-11-25 19:59:59,416 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) [2021-11-25 19:59:59,416 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 58 transitions. [2021-11-25 19:59:59,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-25 19:59:59,417 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:59:59,417 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:59:59,446 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2021-11-25 19:59:59,643 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-25 19:59:59,835 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (19)] Ended with exit code 0 [2021-11-25 20:00:00,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt [2021-11-25 20:00:00,034 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)] === [2021-11-25 20:00:00,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:00:00,034 INFO L85 PathProgramCache]: Analyzing trace with hash -761736198, now seen corresponding path program 1 times [2021-11-25 20:00:00,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:00:00,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1154480920] [2021-11-25 20:00:00,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:00:00,034 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:00:00,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:00:00,035 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:00:00,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-25 20:00:00,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:00:00,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 20:00:00,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:00:00,234 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 [2021-11-25 20:00:00,245 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 20:00:00,246 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:00:00,246 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:00:00,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1154480920] [2021-11-25 20:00:00,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1154480920] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:00:00,246 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:00:00,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:00:00,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685099758] [2021-11-25 20:00:00,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:00:00,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:00:00,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:00:00,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:00:00,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:00:00,248 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) [2021-11-25 20:00:00,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:00:00,485 INFO L93 Difference]: Finished difference Result 61 states and 75 transitions. [2021-11-25 20:00:00,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:00:00,486 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 [2021-11-25 20:00:00,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:00:00,486 INFO L225 Difference]: With dead ends: 61 [2021-11-25 20:00:00,486 INFO L226 Difference]: Without dead ends: 49 [2021-11-25 20:00:00,487 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 [2021-11-25 20:00:00,487 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, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 20:00:00,488 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 59 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 20:00:00,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-11-25 20:00:00,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 40. [2021-11-25 20:00:00,492 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) [2021-11-25 20:00:00,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 52 transitions. [2021-11-25 20:00:00,493 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 52 transitions. Word has length 15 [2021-11-25 20:00:00,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:00:00,493 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 52 transitions. [2021-11-25 20:00:00,494 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) [2021-11-25 20:00:00,494 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 52 transitions. [2021-11-25 20:00:00,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-25 20:00:00,495 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:00:00,495 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:00:00,504 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-25 20:00:00,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 20:00:00,697 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)] === [2021-11-25 20:00:00,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:00:00,697 INFO L85 PathProgramCache]: Analyzing trace with hash -383082231, now seen corresponding path program 3 times [2021-11-25 20:00:00,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:00:00,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [319598187] [2021-11-25 20:00:00,698 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 20:00:00,698 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:00:00,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:00:00,699 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:00:00,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-25 20:00:01,184 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-25 20:00:01,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 20:00:01,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 43 conjunts are in the unsatisfiable core [2021-11-25 20:00:01,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:00:01,215 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 [2021-11-25 20:00:01,232 INFO L354 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2021-11-25 20:00:01,232 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 [2021-11-25 20:00:01,281 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-25 20:00:01,281 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 [2021-11-25 20:00:01,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:00:01,297 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 [2021-11-25 20:00:01,300 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 0 case distinctions, treesize of input 16 treesize of output 18 [2021-11-25 20:00:01,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:00:01,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:00:01,342 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 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 [2021-11-25 20:00:01,376 INFO L354 Elim1Store]: treesize reduction 30, result has 45.5 percent of original size [2021-11-25 20:00:01,376 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 [2021-11-25 20:00:01,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:00:01,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:00:01,512 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 [2021-11-25 20:00:01,568 INFO L354 Elim1Store]: treesize reduction 45, result has 45.1 percent of original size [2021-11-25 20:00:01,569 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 [2021-11-25 20:00:01,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:00:01,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:00:01,807 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 [2021-11-25 20:00:01,907 INFO L354 Elim1Store]: treesize reduction 60, result has 45.0 percent of original size [2021-11-25 20:00:01,907 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 [2021-11-25 20:00:02,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:00:02,359 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 20:00:02,360 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 [2021-11-25 20:00:02,449 INFO L354 Elim1Store]: treesize reduction 16, result has 51.5 percent of original size [2021-11-25 20:00:02,449 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 [2021-11-25 20:00:02,552 INFO L354 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2021-11-25 20:00:02,552 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 [2021-11-25 20:00:02,559 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-11-25 20:00:02,575 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 20:00:02,686 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 [2021-11-25 20:00:02,729 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:00:02,730 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:00:02,821 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 20:00:02,821 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 [2021-11-25 20:00:02,838 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 [2021-11-25 20:00:02,899 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 [2021-11-25 20:00:03,013 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 [2021-11-25 20:00:03,312 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 [2021-11-25 20:00:04,046 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 [2021-11-25 20:00:06,108 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 [2021-11-25 20:00:06,208 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-25 20:00:06,209 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 [2021-11-25 20:00:06,211 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 9 not checked. [2021-11-25 20:00:06,211 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:00:06,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [319598187] [2021-11-25 20:00:06,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [319598187] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:00:06,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1773651348] [2021-11-25 20:00:06,212 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 20:00:06,212 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 20:00:06,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 20:00:06,221 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 20:00:06,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-11-25 20:00:06,776 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 20:00:06,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703425865] [2021-11-25 20:00:06,778 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 20:00:06,778 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:00:06,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:00:06,779 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:00:06,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 1 [2021-11-25 20:00:06,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-25 20:00:28,709 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-25 20:00:28,709 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 20:00:28,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 43 conjunts are in the unsatisfiable core [2021-11-25 20:00:28,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:00:28,750 INFO L354 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2021-11-25 20:00:28,751 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 [2021-11-25 20:00:28,770 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 [2021-11-25 20:00:28,808 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-25 20:00:28,808 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 [2021-11-25 20:00:28,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:00:28,832 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 [2021-11-25 20:00:28,836 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 [2021-11-25 20:00:28,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:00:28,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:00:28,870 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 [2021-11-25 20:00:28,903 INFO L354 Elim1Store]: treesize reduction 30, result has 45.5 percent of original size [2021-11-25 20:00:28,903 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 [2021-11-25 20:00:29,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:00:29,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:00:29,004 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 [2021-11-25 20:00:29,060 INFO L354 Elim1Store]: treesize reduction 45, result has 45.1 percent of original size [2021-11-25 20:00:29,061 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 [2021-11-25 20:00:29,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:00:29,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:00:29,295 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 [2021-11-25 20:00:29,377 INFO L354 Elim1Store]: treesize reduction 60, result has 45.0 percent of original size [2021-11-25 20:00:29,377 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 [2021-11-25 20:00:30,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:00:30,896 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 20:00:30,896 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 [2021-11-25 20:00:30,962 INFO L354 Elim1Store]: treesize reduction 16, result has 51.5 percent of original size [2021-11-25 20:00:30,962 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 [2021-11-25 20:00:31,035 INFO L354 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2021-11-25 20:00:31,036 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 [2021-11-25 20:00:31,041 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-11-25 20:00:31,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-25 20:00:31,096 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 [2021-11-25 20:00:31,099 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:00:31,100 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:00:31,127 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 20:00:31,128 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 [2021-11-25 20:00:31,140 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 [2021-11-25 20:00:31,184 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 [2021-11-25 20:00:31,300 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 [2021-11-25 20:00:31,562 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 [2021-11-25 20:00:32,280 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 [2021-11-25 20:00:34,381 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 [2021-11-25 20:00:34,438 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-25 20:00:34,438 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 [2021-11-25 20:00:34,440 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 9 not checked. [2021-11-25 20:00:34,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703425865] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:00:34,440 INFO L186 FreeRefinementEngine]: Found 0 perfect and 4 imperfect interpolant sequences. [2021-11-25 20:00:34,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11, 11] total 25 [2021-11-25 20:00:34,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992140253] [2021-11-25 20:00:34,440 INFO L85 oduleStraightlineAll]: Using 4 imperfect interpolants to construct interpolant automaton [2021-11-25 20:00:34,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-25 20:00:34,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:00:34,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-25 20:00:34,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=122, Unknown=12, NotChecked=396, Total=600 [2021-11-25 20:00:34,442 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) [2021-11-25 20:00:35,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:00:35,313 INFO L93 Difference]: Finished difference Result 81 states and 97 transitions. [2021-11-25 20:00:35,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 20:00:35,314 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 [2021-11-25 20:00:35,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:00:35,315 INFO L225 Difference]: With dead ends: 81 [2021-11-25 20:00:35,315 INFO L226 Difference]: Without dead ends: 79 [2021-11-25 20:00:35,315 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 [2021-11-25 20:00:35,316 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 [2021-11-25 20:00:35,316 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] [2021-11-25 20:00:35,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-11-25 20:00:35,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 42. [2021-11-25 20:00:35,321 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) [2021-11-25 20:00:35,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 56 transitions. [2021-11-25 20:00:35,322 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 56 transitions. Word has length 15 [2021-11-25 20:00:35,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:00:35,322 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 56 transitions. [2021-11-25 20:00:35,322 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) [2021-11-25 20:00:35,322 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 56 transitions. [2021-11-25 20:00:35,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-25 20:00:35,323 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:00:35,323 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:00:35,339 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-25 20:00:35,572 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-11-25 20:00:35,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:00:35,724 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)] === [2021-11-25 20:00:35,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:00:35,724 INFO L85 PathProgramCache]: Analyzing trace with hash 426264395, now seen corresponding path program 3 times [2021-11-25 20:00:35,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:00:35,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [972315443] [2021-11-25 20:00:35,725 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 20:00:35,725 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:00:35,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:00:35,726 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:00:35,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-25 20:00:36,164 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-25 20:00:36,165 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 20:00:36,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 36 conjunts are in the unsatisfiable core [2021-11-25 20:00:36,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:00:36,211 INFO L354 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2021-11-25 20:00:36,211 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 [2021-11-25 20:00:36,220 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 [2021-11-25 20:00:36,281 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-25 20:00:36,281 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 [2021-11-25 20:00:36,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:00:36,295 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 [2021-11-25 20:00:36,299 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 [2021-11-25 20:00:36,359 INFO L354 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-11-25 20:00:36,359 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 [2021-11-25 20:00:36,373 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 [2021-11-25 20:00:36,397 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-25 20:00:36,397 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 [2021-11-25 20:00:36,452 INFO L354 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-11-25 20:00:36,452 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 [2021-11-25 20:00:36,464 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 [2021-11-25 20:00:36,494 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-25 20:00:36,494 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 [2021-11-25 20:00:36,548 INFO L354 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-11-25 20:00:36,548 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 [2021-11-25 20:00:36,555 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 [2021-11-25 20:00:36,584 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 20:00:36,585 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 [2021-11-25 20:00:36,654 INFO L354 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-11-25 20:00:36,655 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 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 [2021-11-25 20:00:36,684 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-25 20:00:36,716 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:00:36,736 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-25 20:00:36,737 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 [2021-11-25 20:00:36,834 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 [2021-11-25 20:00:36,853 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 20:00:36,853 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:00:36,952 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 20:00:36,952 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 [2021-11-25 20:00:36,965 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 [2021-11-25 20:00:37,008 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 [2021-11-25 20:00:37,108 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 [2021-11-25 20:00:37,386 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 [2021-11-25 20:00:38,569 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 [2021-11-25 20:00:38,616 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-25 20:00:38,616 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 [2021-11-25 20:00:38,618 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 9 not checked. [2021-11-25 20:00:38,618 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:00:38,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [972315443] [2021-11-25 20:00:38,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [972315443] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:00:38,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1331340261] [2021-11-25 20:00:38,618 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 20:00:38,618 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 20:00:38,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 20:00:38,619 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 20:00:38,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2021-11-25 20:00:39,221 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 20:00:39,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904089544] [2021-11-25 20:00:39,221 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 20:00:39,221 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:00:39,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:00:39,223 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:00:39,229 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (26)] Ended with exit code 1 [2021-11-25 20:00:39,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-11-25 20:00:56,707 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-25 20:00:56,707 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 20:00:56,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 38 conjunts are in the unsatisfiable core [2021-11-25 20:00:56,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:00:56,744 INFO L354 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2021-11-25 20:00:56,744 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 [2021-11-25 20:00:56,755 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 [2021-11-25 20:00:56,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:00:56,784 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 [2021-11-25 20:00:56,800 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 20:00:56,801 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 [2021-11-25 20:00:56,808 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 [2021-11-25 20:00:56,832 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-25 20:00:56,832 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 28 treesize of output 35 [2021-11-25 20:00:56,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:00:56,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:00:56,919 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 [2021-11-25 20:00:56,952 INFO L354 Elim1Store]: treesize reduction 30, result has 45.5 percent of original size [2021-11-25 20:00:56,953 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 [2021-11-25 20:00:57,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:00:57,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:00:57,060 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 [2021-11-25 20:00:57,113 INFO L354 Elim1Store]: treesize reduction 45, result has 45.1 percent of original size [2021-11-25 20:00:57,114 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 [2021-11-25 20:00:57,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:00:57,360 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 20:00:57,361 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 [2021-11-25 20:00:57,403 INFO L354 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2021-11-25 20:00:57,403 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 [2021-11-25 20:00:57,457 INFO L354 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-11-25 20:00:57,458 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 [2021-11-25 20:00:57,463 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 [2021-11-25 20:00:57,490 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:00:57,502 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-25 20:00:57,503 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 [2021-11-25 20:00:57,539 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 [2021-11-25 20:00:57,542 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:00:57,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:00:57,575 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 20:00:57,575 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 [2021-11-25 20:00:57,587 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 [2021-11-25 20:00:57,631 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 [2021-11-25 20:00:57,742 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 [2021-11-25 20:00:57,991 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 [2021-11-25 20:00:58,810 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 [2021-11-25 20:00:58,872 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-25 20:00:58,873 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 [2021-11-25 20:00:58,874 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 9 not checked. [2021-11-25 20:00:58,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [904089544] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:00:58,874 INFO L186 FreeRefinementEngine]: Found 0 perfect and 4 imperfect interpolant sequences. [2021-11-25 20:00:58,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11, 11] total 25 [2021-11-25 20:00:58,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20167671] [2021-11-25 20:00:58,875 INFO L85 oduleStraightlineAll]: Using 4 imperfect interpolants to construct interpolant automaton [2021-11-25 20:00:58,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-25 20:00:58,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:00:58,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-25 20:00:58,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=159, Unknown=10, NotChecked=350, Total=600 [2021-11-25 20:00:58,876 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) [2021-11-25 20:00:59,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:00:59,678 INFO L93 Difference]: Finished difference Result 93 states and 111 transitions. [2021-11-25 20:00:59,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-25 20:00:59,678 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 [2021-11-25 20:00:59,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:00:59,679 INFO L225 Difference]: With dead ends: 93 [2021-11-25 20:00:59,679 INFO L226 Difference]: Without dead ends: 91 [2021-11-25 20:00:59,680 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 32 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 10 IntricatePredicates, 1 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=161, Invalid=375, Unknown=10, NotChecked=510, Total=1056 [2021-11-25 20:00:59,680 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 83 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 20:00:59,681 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 190 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 92 Invalid, 0 Unknown, 464 Unchecked, 0.3s Time] [2021-11-25 20:00:59,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-11-25 20:00:59,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 40. [2021-11-25 20:00:59,686 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) [2021-11-25 20:00:59,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 52 transitions. [2021-11-25 20:00:59,686 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 52 transitions. Word has length 15 [2021-11-25 20:00:59,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:00:59,687 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 52 transitions. [2021-11-25 20:00:59,687 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) [2021-11-25 20:00:59,687 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 52 transitions. [2021-11-25 20:00:59,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-25 20:00:59,688 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:00:59,688 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:00:59,704 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-11-25 20:00:59,933 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-11-25 20:01:00,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:01:00,102 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)] === [2021-11-25 20:01:00,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:01:00,103 INFO L85 PathProgramCache]: Analyzing trace with hash 9944779, now seen corresponding path program 4 times [2021-11-25 20:01:00,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:01:00,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1177407516] [2021-11-25 20:01:00,103 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 20:01:00,103 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:01:00,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:01:00,104 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:01:00,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-11-25 20:01:00,494 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 20:01:00,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 20:01:00,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 39 conjunts are in the unsatisfiable core [2021-11-25 20:01:00,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:01:00,534 INFO L354 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2021-11-25 20:01:00,534 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 [2021-11-25 20:01:00,546 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 [2021-11-25 20:01:00,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:01:00,570 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 [2021-11-25 20:01:00,585 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 20:01:00,585 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 [2021-11-25 20:01:00,592 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 [2021-11-25 20:01:00,619 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-25 20:01:00,619 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 [2021-11-25 20:01:00,679 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-25 20:01:00,679 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 [2021-11-25 20:01:00,714 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 20:01:00,715 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 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 [2021-11-25 20:01:00,774 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-25 20:01:00,774 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 [2021-11-25 20:01:00,812 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 20:01:00,813 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 [2021-11-25 20:01:00,905 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 [2021-11-25 20:01:00,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:01:00,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:01:00,945 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 [2021-11-25 20:01:00,965 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-11-25 20:01:00,965 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 [2021-11-25 20:01:01,025 INFO L354 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2021-11-25 20:01:01,025 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 [2021-11-25 20:01:01,030 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-11-25 20:01:01,041 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 [2021-11-25 20:01:01,112 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 [2021-11-25 20:01:01,127 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:01:01,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:01:01,183 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 20:01:01,183 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 [2021-11-25 20:01:01,196 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 [2021-11-25 20:01:01,241 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 [2021-11-25 20:01:01,416 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 [2021-11-25 20:01:01,641 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 [2021-11-25 20:01:02,667 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 [2021-11-25 20:01:02,706 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-25 20:01:02,708 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 [2021-11-25 20:01:02,710 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 9 not checked. [2021-11-25 20:01:02,710 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:01:02,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1177407516] [2021-11-25 20:01:02,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1177407516] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:01:02,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1699278326] [2021-11-25 20:01:02,710 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 20:01:02,711 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 20:01:02,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 20:01:02,714 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 20:01:02,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2021-11-25 20:01:03,258 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 20:01:03,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 20:01:03,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 42 conjunts are in the unsatisfiable core [2021-11-25 20:01:03,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:01:03,292 INFO L354 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2021-11-25 20:01:03,293 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 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 [2021-11-25 20:01:03,306 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 20:01:03,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:01:03,319 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 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 [2021-11-25 20:01:03,333 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 20:01:03,333 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 [2021-11-25 20:01:03,342 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 [2021-11-25 20:01:03,367 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-25 20:01:03,367 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 25 treesize of output 32 [2021-11-25 20:01:03,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:01:03,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:01:03,416 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 [2021-11-25 20:01:03,449 INFO L354 Elim1Store]: treesize reduction 30, result has 45.5 percent of original size [2021-11-25 20:01:03,449 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 [2021-11-25 20:01:03,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:01:03,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:01:03,602 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 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 [2021-11-25 20:01:03,659 INFO L354 Elim1Store]: treesize reduction 45, result has 45.1 percent of original size [2021-11-25 20:01:03,659 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 [2021-11-25 20:01:03,907 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 [2021-11-25 20:01:04,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:01:04,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:01:04,169 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 [2021-11-25 20:01:04,218 INFO L354 Elim1Store]: treesize reduction 16, result has 51.5 percent of original size [2021-11-25 20:01:04,218 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 [2021-11-25 20:01:04,315 INFO L354 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2021-11-25 20:01:04,315 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 [2021-11-25 20:01:04,320 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-11-25 20:01:04,329 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 [2021-11-25 20:01:04,372 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 [2021-11-25 20:01:04,376 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:01:04,376 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:01:04,401 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 20:01:04,401 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 [2021-11-25 20:01:04,414 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 [2021-11-25 20:01:04,458 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 [2021-11-25 20:01:04,595 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 [2021-11-25 20:01:04,837 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 [2021-11-25 20:01:05,540 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 [2021-11-25 20:01:05,586 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-25 20:01:05,586 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 [2021-11-25 20:01:05,588 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 9 not checked. [2021-11-25 20:01:05,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1699278326] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:01:05,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762674718] [2021-11-25 20:01:05,588 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 20:01:05,588 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:01:05,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:01:05,589 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:01:05,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-11-25 20:01:05,850 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 20:01:05,850 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 20:01:05,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 40 conjunts are in the unsatisfiable core [2021-11-25 20:01:05,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:01:05,879 INFO L354 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2021-11-25 20:01:05,879 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 [2021-11-25 20:01:05,891 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 [2021-11-25 20:01:05,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:01:05,922 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 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 [2021-11-25 20:01:05,941 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 20:01:05,942 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 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 [2021-11-25 20:01:05,951 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 [2021-11-25 20:01:05,988 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-25 20:01:05,988 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 [2021-11-25 20:01:06,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:01:06,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:01:06,069 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 [2021-11-25 20:01:06,106 INFO L354 Elim1Store]: treesize reduction 30, result has 45.5 percent of original size [2021-11-25 20:01:06,106 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 [2021-11-25 20:01:06,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:01:06,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:01:06,225 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 [2021-11-25 20:01:06,282 INFO L354 Elim1Store]: treesize reduction 45, result has 45.1 percent of original size [2021-11-25 20:01:06,282 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 [2021-11-25 20:01:06,552 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 [2021-11-25 20:01:06,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:01:06,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:01:06,759 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 [2021-11-25 20:01:06,818 INFO L354 Elim1Store]: treesize reduction 16, result has 51.5 percent of original size [2021-11-25 20:01:06,818 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 [2021-11-25 20:01:06,873 INFO L354 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2021-11-25 20:01:06,874 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 [2021-11-25 20:01:06,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-11-25 20:01:06,889 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 [2021-11-25 20:01:06,929 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 [2021-11-25 20:01:06,933 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:01:06,933 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:01:06,965 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 20:01:06,965 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 [2021-11-25 20:01:06,978 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 [2021-11-25 20:01:07,022 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 [2021-11-25 20:01:07,176 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 [2021-11-25 20:01:07,457 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 [2021-11-25 20:01:08,160 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 [2021-11-25 20:01:08,230 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-25 20:01:08,230 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 [2021-11-25 20:01:08,233 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 9 not checked. [2021-11-25 20:01:08,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762674718] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:01:08,233 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-25 20:01:08,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10, 10, 10, 10] total 28 [2021-11-25 20:01:08,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780530149] [2021-11-25 20:01:08,234 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-25 20:01:08,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-25 20:01:08,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:01:08,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-25 20:01:08,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=122, Unknown=15, NotChecked=540, Total=756 [2021-11-25 20:01:08,235 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) [2021-11-25 20:01:09,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:01:09,021 INFO L93 Difference]: Finished difference Result 73 states and 93 transitions. [2021-11-25 20:01:09,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-25 20:01:09,022 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 [2021-11-25 20:01:09,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:01:09,024 INFO L225 Difference]: With dead ends: 73 [2021-11-25 20:01:09,024 INFO L226 Difference]: Without dead ends: 71 [2021-11-25 20:01:09,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 50 SyntacticMatches, 11 SemanticMatches, 31 ConstructedPredicates, 15 IntricatePredicates, 3 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=126, Invalid=223, Unknown=17, NotChecked=690, Total=1056 [2021-11-25 20:01:09,025 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, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 20:01:09,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 224 Invalid, 664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 58 Invalid, 0 Unknown, 599 Unchecked, 0.2s Time] [2021-11-25 20:01:09,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-11-25 20:01:09,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 24. [2021-11-25 20:01:09,031 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) [2021-11-25 20:01:09,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2021-11-25 20:01:09,031 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 15 [2021-11-25 20:01:09,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:01:09,032 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2021-11-25 20:01:09,032 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) [2021-11-25 20:01:09,032 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2021-11-25 20:01:09,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-25 20:01:09,033 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:01:09,033 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:01:09,048 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (29)] Forceful destruction successful, exit code 0 [2021-11-25 20:01:09,248 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (28)] Ended with exit code 0 [2021-11-25 20:01:09,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-11-25 20:01:09,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:01:09,638 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)] === [2021-11-25 20:01:09,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:01:09,639 INFO L85 PathProgramCache]: Analyzing trace with hash -270590612, now seen corresponding path program 1 times [2021-11-25 20:01:09,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:01:09,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [711740138] [2021-11-25 20:01:09,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:01:09,639 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:01:09,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:01:09,640 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:01:09,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-11-25 20:01:09,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:01:09,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-25 20:01:09,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:01:09,937 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-25 20:01:09,937 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 [2021-11-25 20:01:09,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:01:09,953 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 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 [2021-11-25 20:01:09,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:01:09,965 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 [2021-11-25 20:01:10,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:01:10,008 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 [2021-11-25 20:01:10,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:01:10,012 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 [2021-11-25 20:01:10,109 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-25 20:01:10,109 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 [2021-11-25 20:01:10,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:01:10,121 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 [2021-11-25 20:01:10,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:01:10,136 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 [2021-11-25 20:01:10,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:01:10,159 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 [2021-11-25 20:01:10,347 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 [2021-11-25 20:01:10,351 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 [2021-11-25 20:01:10,378 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:01:10,378 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:01:10,516 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:01:10,516 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:01:10,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [711740138] [2021-11-25 20:01:10,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [711740138] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:01:10,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1715243147] [2021-11-25 20:01:10,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:01:10,517 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 20:01:10,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 20:01:10,533 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 20:01:10,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process [2021-11-25 20:01:10,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:01:10,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-25 20:01:10,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:01:10,944 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-25 20:01:10,945 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 [2021-11-25 20:01:10,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:01:10,961 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 [2021-11-25 20:01:10,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:01:10,972 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 [2021-11-25 20:01:10,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:01:11,005 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 [2021-11-25 20:01:11,101 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-25 20:01:11,102 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 [2021-11-25 20:01:11,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:01:11,115 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 [2021-11-25 20:01:11,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:01:11,126 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 [2021-11-25 20:01:11,171 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 [2021-11-25 20:01:11,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:01:11,176 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 [2021-11-25 20:01:11,354 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 [2021-11-25 20:01:11,357 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 [2021-11-25 20:01:11,367 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:01:11,367 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:01:11,446 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:01:11,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1715243147] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:01:11,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193817839] [2021-11-25 20:01:11,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:01:11,446 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:01:11,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:01:11,447 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:01:11,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-11-25 20:01:11,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:01:11,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-25 20:01:11,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:01:11,714 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-25 20:01:11,715 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 [2021-11-25 20:01:11,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:01:11,732 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 [2021-11-25 20:01:11,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:01:11,751 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 [2021-11-25 20:01:11,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:01:11,813 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 [2021-11-25 20:01:11,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:01:11,818 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 [2021-11-25 20:01:11,895 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-25 20:01:11,896 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 [2021-11-25 20:01:11,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:01:11,912 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 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 [2021-11-25 20:01:11,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:01:11,927 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 [2021-11-25 20:01:11,970 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 [2021-11-25 20:01:11,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:01:11,985 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 [2021-11-25 20:01:12,087 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 [2021-11-25 20:01:12,095 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 [2021-11-25 20:01:12,103 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:01:12,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:01:12,182 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:01:12,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1193817839] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:01:12,182 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-25 20:01:12,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 10 [2021-11-25 20:01:12,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715429626] [2021-11-25 20:01:12,182 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-25 20:01:12,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-25 20:01:12,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:01:12,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-25 20:01:12,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-25 20:01:12,184 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) [2021-11-25 20:01:12,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:01:12,629 INFO L93 Difference]: Finished difference Result 47 states and 52 transitions. [2021-11-25 20:01:12,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:01:12,630 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 [2021-11-25 20:01:12,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:01:12,630 INFO L225 Difference]: With dead ends: 47 [2021-11-25 20:01:12,630 INFO L226 Difference]: Without dead ends: 25 [2021-11-25 20:01:12,630 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-11-25 20:01:12,631 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 19 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 20:01:12,631 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 68 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 20:01:12,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-11-25 20:01:12,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-11-25 20:01:12,638 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) [2021-11-25 20:01:12,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2021-11-25 20:01:12,638 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 16 [2021-11-25 20:01:12,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:01:12,638 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2021-11-25 20:01:12,639 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) [2021-11-25 20:01:12,639 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2021-11-25 20:01:12,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-25 20:01:12,639 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:01:12,640 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:01:12,662 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2021-11-25 20:01:12,848 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (32)] Forceful destruction successful, exit code 0 [2021-11-25 20:01:13,054 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (31)] Ended with exit code 0 [2021-11-25 20:01:13,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 20:01:13,245 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)] === [2021-11-25 20:01:13,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:01:13,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1451772591, now seen corresponding path program 1 times [2021-11-25 20:01:13,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:01:13,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [453101358] [2021-11-25 20:01:13,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:01:13,246 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:01:13,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:01:13,247 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:01:13,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-11-25 20:01:13,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:01:13,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-25 20:01:13,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:01:13,590 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:01:13,600 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-25 20:01:13,600 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 [2021-11-25 20:01:13,664 INFO L354 Elim1Store]: treesize reduction 38, result has 39.7 percent of original size [2021-11-25 20:01:13,665 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 [2021-11-25 20:01:13,698 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 [2021-11-25 20:01:13,702 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 [2021-11-25 20:01:13,712 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 [2021-11-25 20:01:13,716 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 [2021-11-25 20:01:13,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:01:13,821 INFO L354 Elim1Store]: treesize reduction 35, result has 34.0 percent of original size [2021-11-25 20:01:13,822 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 [2021-11-25 20:01:13,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:01:13,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:01:13,837 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 [2021-11-25 20:01:13,847 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 [2021-11-25 20:01:13,880 INFO L354 Elim1Store]: treesize reduction 20, result has 72.6 percent of original size [2021-11-25 20:01:13,881 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 [2021-11-25 20:01:14,174 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 [2021-11-25 20:01:14,250 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-25 20:01:14,250 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 [2021-11-25 20:01:14,267 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:01:14,268 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:01:14,383 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 20:01:14,383 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 [2021-11-25 20:01:14,407 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 [2021-11-25 20:01:14,426 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 20:01:14,427 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 [2021-11-25 20:01:14,436 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 20:01:14,436 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 1 case distinctions, treesize of input 68 treesize of output 61 [2021-11-25 20:01:14,629 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 20:01:14,630 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 [2021-11-25 20:01:14,696 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 20:01:14,696 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 [2021-11-25 20:01:14,944 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 20:01:14,944 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 [2021-11-25 20:01:14,996 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 [2021-11-25 20:01:15,242 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 20:01:15,243 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 [2021-11-25 20:01:15,312 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 [2021-11-25 20:04:15,907 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 [2021-11-25 20:04:15,931 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-11-25 20:04:15,931 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:04:15,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [453101358] [2021-11-25 20:04:15,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [453101358] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:04:15,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1105894663] [2021-11-25 20:04:15,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:04:15,931 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 20:04:15,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 20:04:15,933 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 20:04:15,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fca2f88-8a8a-49e7-b98c-0b677f52f03f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (35)] Waiting until timeout for monitored process [2021-11-25 20:04:16,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:04:16,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 40 conjunts are in the unsatisfiable core [2021-11-25 20:04:16,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:04:16,377 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:04:16,387 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-25 20:04:16,387 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 [2021-11-25 20:04:16,451 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 [2021-11-25 20:04:16,467 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 20:04:16,467 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 [2021-11-25 20:04:16,474 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-25 20:04:16,486 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 [2021-11-25 20:04:16,505 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 20:04:16,505 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 [2021-11-25 20:04:16,515 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-25 20:04:16,560 INFO L354 Elim1Store]: treesize reduction 38, result has 39.7 percent of original size [2021-11-25 20:04:16,560 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 [2021-11-25 20:04:16,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:04:16,787 INFO L354 Elim1Store]: treesize reduction 74, result has 26.7 percent of original size [2021-11-25 20:04:16,787 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 [2021-11-25 20:04:16,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:04:16,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:04:16,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:04:16,805 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 [2021-11-25 20:04:16,820 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 [2021-11-25 20:04:16,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:04:16,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:04:16,866 INFO L354 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2021-11-25 20:04:16,867 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 [2021-11-25 20:04:16,881 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 [2021-11-25 20:04:16,903 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 [2021-11-25 20:04:16,922 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 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 [2021-11-25 20:04:16,949 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 20:04:16,983 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-25 20:04:16,983 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 [2021-11-25 20:04:16,993 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 [2021-11-25 20:04:17,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:04:17,585 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 [2021-11-25 20:04:17,780 INFO L354 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2021-11-25 20:04:17,780 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 [2021-11-25 20:04:17,784 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:04:17,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:04:18,120 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 20:04:18,120 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 126 treesize of output 123 [2021-11-25 20:04:18,701 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 20:04:18,702 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 [2021-11-25 20:04:18,719 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 20:04:18,719 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 [2021-11-25 20:04:19,376 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 20:04:19,376 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 [2021-11-25 20:04:19,446 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:04:19,560 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 20:04:19,561 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 [2021-11-25 20:04:20,008 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 20:04:20,009 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 [2021-11-25 20:04:21,897 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 [2021-11-25 20:04:22,533 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 20:04:22,534 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 [2021-11-25 20:04:33,726 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 [2021-11-25 20:04:50,814 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 [2021-11-25 20:04:50,895 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 [2021-11-25 20:04:56,376 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 [2021-11-25 20:05:16,271 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 [2021-11-25 20:05:20,326 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 [2021-11-25 20:05:21,168 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 [2021-11-25 20:05:21,494 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 [2021-11-25 20:05:28,888 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 [2021-11-25 20:05:41,911 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 [2021-11-25 20:05:53,210 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:05:53,211 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:05:53,221 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 [2021-11-25 20:05:53,508 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:05:53,509 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:05:53,525 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 [2021-11-25 20:05:53,813 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:05:53,818 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:05:53,819 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:05:53,853 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 20:05:53,853 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 [2021-11-25 20:05:54,722 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:05:54,735 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 20 treesize of output 18 [2021-11-25 20:05:55,980 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 [2021-11-25 20:05:57,566 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:05:57,566 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:05:57,582 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 [2021-11-25 20:05:57,959 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:05:57,970 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:05:57,970 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:05:58,018 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 20:05:58,018 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 [2021-11-25 20:05:58,901 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:05:58,901 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:05:58,917 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 [2021-11-25 20:06:00,553 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:06:00,554 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:06:00,577 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 [2021-11-25 20:06:04,351 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 20:06:04,352 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 [2021-11-25 20:06:21,959 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 20:06:21,960 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 [2021-11-25 20:06:51,203 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 20:06:51,204 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 [2021-11-25 20:07:00,596 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-11-25 20:07:00,597 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 [2021-11-25 20:07:01,031 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:07:01,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:01,233 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 [2021-11-25 20:07:01,411 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-25 20:07:01,411 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 [2021-11-25 20:07:01,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:01,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:02,025 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:07:02,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:43,248 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 20:07:43,248 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 [2021-11-25 20:07:48,046 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 [2021-11-25 20:07:48,144 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 [2021-11-25 20:07:48,464 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 20:07:48,464 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 [2021-11-25 20:07:48,849 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 [2021-11-25 20:07:49,133 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 [2021-11-25 20:07:49,689 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-11-25 20:07:49,708 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-11-25 20:07:49,821 INFO L354 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2021-11-25 20:07:49,821 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 [2021-11-25 20:07:49,937 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 [2021-11-25 20:07:50,558 INFO L354 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2021-11-25 20:07:50,559 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 [2021-11-25 20:07:50,643 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 105 treesize of output 87 [2021-11-25 20:07:51,494 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 20:07:51,494 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 [2021-11-25 20:07:52,961 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 20:07:52,961 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 [2021-11-25 20:07:53,917 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 [2021-11-25 20:09:25,128 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