./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-ext/tree_of_cslls.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6a47aea7 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext/tree_of_cslls.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e174a1790a7df4dcba920aa7097618d66c8703aa13de1aa6af1a2c5f7cb0971c --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:11:10,360 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:11:10,363 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:11:10,420 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:11:10,420 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:11:10,427 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:11:10,429 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:11:10,435 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:11:10,438 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:11:10,448 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:11:10,449 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:11:10,452 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:11:10,452 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:11:10,457 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:11:10,460 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:11:10,470 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:11:10,472 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:11:10,473 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:11:10,476 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:11:10,486 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:11:10,488 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:11:10,491 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:11:10,495 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:11:10,497 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:11:10,502 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:11:10,502 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:11:10,503 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:11:10,506 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:11:10,507 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:11:10,509 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:11:10,510 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:11:10,512 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:11:10,514 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:11:10,516 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:11:10,520 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:11:10,521 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:11:10,522 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:11:10,522 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:11:10,523 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:11:10,524 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:11:10,525 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:11:10,527 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-23 17:11:10,577 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:11:10,578 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:11:10,578 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:11:10,579 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:11:10,580 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:11:10,580 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:11:10,580 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:11:10,581 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:11:10,581 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:11:10,581 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 17:11:10,582 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:11:10,582 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:11:10,582 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 17:11:10,582 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 17:11:10,583 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:11:10,583 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 17:11:10,583 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 17:11:10,584 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 17:11:10,585 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 17:11:10,585 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 17:11:10,585 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:11:10,586 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 17:11:10,586 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 17:11:10,586 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 17:11:10,587 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 17:11:10,587 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:11:10,587 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-23 17:11:10,588 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-23 17:11:10,588 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-23 17:11:10,588 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:11:10,588 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 17:11:10,589 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 17:11:10,589 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:11:10,589 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:11:10,590 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:11:10,590 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:11:10,590 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:11:10,591 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:11:10,591 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 17:11:10,591 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 17:11:10,592 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:11:10,592 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:11:10,592 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_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e174a1790a7df4dcba920aa7097618d66c8703aa13de1aa6af1a2c5f7cb0971c [2021-11-23 17:11:10,887 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:11:10,923 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:11:10,927 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:11:10,929 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:11:10,930 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:11:10,932 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/memsafety-ext/tree_of_cslls.i [2021-11-23 17:11:11,036 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/data/23c2b14b5/52be9a0165024d0bad0da18fa195f0dc/FLAGf85fb1dbc [2021-11-23 17:11:11,714 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:11:11,715 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/sv-benchmarks/c/memsafety-ext/tree_of_cslls.i [2021-11-23 17:11:11,731 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/data/23c2b14b5/52be9a0165024d0bad0da18fa195f0dc/FLAGf85fb1dbc [2021-11-23 17:11:12,000 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/data/23c2b14b5/52be9a0165024d0bad0da18fa195f0dc [2021-11-23 17:11:12,006 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:11:12,008 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:11:12,012 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:11:12,012 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:11:12,016 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:11:12,017 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:11:12" (1/1) ... [2021-11-23 17:11:12,019 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@765889c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:11:12, skipping insertion in model container [2021-11-23 17:11:12,019 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:11:12" (1/1) ... [2021-11-23 17:11:12,028 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:11:12,075 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:11:12,497 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:11:12,509 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 17:11:12,595 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:11:12,630 INFO L208 MainTranslator]: Completed translation [2021-11-23 17:11:12,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:11:12 WrapperNode [2021-11-23 17:11:12,630 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:11:12,632 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 17:11:12,632 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 17:11:12,632 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 17:11:12,641 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:11:12" (1/1) ... [2021-11-23 17:11:12,664 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:11:12" (1/1) ... [2021-11-23 17:11:12,729 INFO L137 Inliner]: procedures = 123, calls = 63, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 216 [2021-11-23 17:11:12,729 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 17:11:12,730 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 17:11:12,730 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 17:11:12,731 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 17:11:12,747 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:11:12" (1/1) ... [2021-11-23 17:11:12,747 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:11:12" (1/1) ... [2021-11-23 17:11:12,778 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:11:12" (1/1) ... [2021-11-23 17:11:12,779 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:11:12" (1/1) ... [2021-11-23 17:11:12,811 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:11:12" (1/1) ... [2021-11-23 17:11:12,817 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:11:12" (1/1) ... [2021-11-23 17:11:12,820 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:11:12" (1/1) ... [2021-11-23 17:11:12,842 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 17:11:12,843 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 17:11:12,843 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 17:11:12,843 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 17:11:12,852 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:11:12" (1/1) ... [2021-11-23 17:11:12,861 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:11:12,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:11:12,898 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 17:11:12,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 17:11:12,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 17:11:12,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 17:11:12,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 17:11:12,956 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 17:11:12,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 17:11:12,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 17:11:12,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 17:11:12,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 17:11:13,141 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 17:11:13,143 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 17:11:13,892 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 17:11:13,988 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.addAll(ImmutableSet.java:313) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.addBranchEncoders(TransFormulaBuilder.java:170) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.parallelComposition(TransFormulaUtils.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.ParallelComposition.(ParallelComposition.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CodeBlockFactory.constructParallelComposition(CodeBlockFactory.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder$LargeBlockEncoding.composeParallel(CfgBuilder.java:1792) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder$LargeBlockEncoding.(CfgBuilder.java:1653) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder.createIcfg(CfgBuilder.java:280) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBuilderObserver.process(RCFGBuilderObserver.java:88) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.DFSTreeWalker.runObserver(DFSTreeWalker.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.runObserver(BaseWalker.java:93) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.run(BaseWalker.java:86) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-23 17:11:13,993 INFO L158 Benchmark]: Toolchain (without parser) took 1984.17ms. Allocated memory was 98.6MB in the beginning and 121.6MB in the end (delta: 23.1MB). Free memory was 64.3MB in the beginning and 79.5MB in the end (delta: -15.2MB). Peak memory consumption was 21.8MB. Max. memory is 16.1GB. [2021-11-23 17:11:13,994 INFO L158 Benchmark]: CDTParser took 0.40ms. Allocated memory is still 98.6MB. Free memory is still 50.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:11:13,995 INFO L158 Benchmark]: CACSL2BoogieTranslator took 619.29ms. Allocated memory is still 98.6MB. Free memory was 64.1MB in the beginning and 64.8MB in the end (delta: -732.8kB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-23 17:11:13,997 INFO L158 Benchmark]: Boogie Procedure Inliner took 97.74ms. Allocated memory is still 98.6MB. Free memory was 64.8MB in the beginning and 62.1MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 17:11:13,998 INFO L158 Benchmark]: Boogie Preprocessor took 111.81ms. Allocated memory is still 98.6MB. Free memory was 62.1MB in the beginning and 60.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 17:11:13,999 INFO L158 Benchmark]: RCFGBuilder took 1147.90ms. Allocated memory was 98.6MB in the beginning and 121.6MB in the end (delta: 23.1MB). Free memory was 60.0MB in the beginning and 79.5MB in the end (delta: -19.5MB). Peak memory consumption was 20.2MB. Max. memory is 16.1GB. [2021-11-23 17:11:14,004 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40ms. Allocated memory is still 98.6MB. Free memory is still 50.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 619.29ms. Allocated memory is still 98.6MB. Free memory was 64.1MB in the beginning and 64.8MB in the end (delta: -732.8kB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 97.74ms. Allocated memory is still 98.6MB. Free memory was 64.8MB in the beginning and 62.1MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 111.81ms. Allocated memory is still 98.6MB. Free memory was 62.1MB in the beginning and 60.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1147.90ms. Allocated memory was 98.6MB in the beginning and 121.6MB in the end (delta: 23.1MB). Free memory was 60.0MB in the beginning and 79.5MB in the end (delta: -19.5MB). Peak memory consumption was 20.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.addAll(ImmutableSet.java:313) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-23 17:11:14,053 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext/tree_of_cslls.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e174a1790a7df4dcba920aa7097618d66c8703aa13de1aa6af1a2c5f7cb0971c --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:11:17,009 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:11:17,013 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:11:17,081 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:11:17,081 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:11:17,088 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:11:17,090 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:11:17,096 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:11:17,100 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:11:17,110 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:11:17,112 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:11:17,114 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:11:17,115 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:11:17,118 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:11:17,121 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:11:17,126 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:11:17,129 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:11:17,130 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:11:17,133 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:11:17,142 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:11:17,145 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:11:17,147 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:11:17,150 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:11:17,154 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:11:17,165 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:11:17,165 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:11:17,166 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:11:17,169 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:11:17,169 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:11:17,171 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:11:17,171 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:11:17,172 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:11:17,175 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:11:17,176 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:11:17,178 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:11:17,178 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:11:17,180 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:11:17,180 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:11:17,180 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:11:17,183 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:11:17,185 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:11:17,186 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-23 17:11:17,251 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:11:17,251 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:11:17,252 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:11:17,253 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:11:17,254 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:11:17,254 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:11:17,255 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:11:17,255 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:11:17,256 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:11:17,256 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:11:17,258 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:11:17,258 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:11:17,260 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 17:11:17,260 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 17:11:17,261 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:11:17,261 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 17:11:17,261 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 17:11:17,262 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 17:11:17,262 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 17:11:17,262 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:11:17,262 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-23 17:11:17,263 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-23 17:11:17,263 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-23 17:11:17,263 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:11:17,264 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 17:11:17,264 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 17:11:17,264 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 17:11:17,264 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 17:11:17,265 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:11:17,265 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:11:17,266 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 17:11:17,266 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:11:17,266 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:11:17,267 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:11:17,267 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:11:17,268 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 17:11:17,268 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 17:11:17,268 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:11:17,269 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:11:17,269 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_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e174a1790a7df4dcba920aa7097618d66c8703aa13de1aa6af1a2c5f7cb0971c [2021-11-23 17:11:17,761 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:11:17,800 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:11:17,805 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:11:17,807 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:11:17,808 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:11:17,810 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/memsafety-ext/tree_of_cslls.i [2021-11-23 17:11:17,892 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/data/5f8abc6c4/0d5bf130d9264fbd9a8496030cf16c53/FLAGab910a625 [2021-11-23 17:11:18,667 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:11:18,669 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/sv-benchmarks/c/memsafety-ext/tree_of_cslls.i [2021-11-23 17:11:18,692 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/data/5f8abc6c4/0d5bf130d9264fbd9a8496030cf16c53/FLAGab910a625 [2021-11-23 17:11:18,912 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/data/5f8abc6c4/0d5bf130d9264fbd9a8496030cf16c53 [2021-11-23 17:11:18,919 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:11:18,920 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:11:18,931 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:11:18,931 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:11:18,936 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:11:18,937 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:11:18" (1/1) ... [2021-11-23 17:11:18,938 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b927b55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:11:18, skipping insertion in model container [2021-11-23 17:11:18,939 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:11:18" (1/1) ... [2021-11-23 17:11:18,946 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:11:18,987 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:11:19,432 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:11:19,453 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 17:11:19,499 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:11:19,536 INFO L208 MainTranslator]: Completed translation [2021-11-23 17:11:19,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:11:19 WrapperNode [2021-11-23 17:11:19,537 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:11:19,538 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 17:11:19,538 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 17:11:19,538 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 17:11:19,545 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:11:19" (1/1) ... [2021-11-23 17:11:19,565 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:11:19" (1/1) ... [2021-11-23 17:11:19,618 INFO L137 Inliner]: procedures = 124, calls = 63, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 201 [2021-11-23 17:11:19,622 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 17:11:19,623 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 17:11:19,623 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 17:11:19,623 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 17:11:19,632 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:11:19" (1/1) ... [2021-11-23 17:11:19,633 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:11:19" (1/1) ... [2021-11-23 17:11:19,645 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:11:19" (1/1) ... [2021-11-23 17:11:19,648 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:11:19" (1/1) ... [2021-11-23 17:11:19,674 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:11:19" (1/1) ... [2021-11-23 17:11:19,692 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:11:19" (1/1) ... [2021-11-23 17:11:19,694 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:11:19" (1/1) ... [2021-11-23 17:11:19,706 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 17:11:19,707 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 17:11:19,708 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 17:11:19,708 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 17:11:19,720 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:11:19" (1/1) ... [2021-11-23 17:11:19,737 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:11:19,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:11:19,763 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 17:11:19,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 17:11:19,825 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 17:11:19,825 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 17:11:19,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 17:11:19,825 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 17:11:19,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 17:11:19,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 17:11:19,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 17:11:19,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 17:11:19,993 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 17:11:19,995 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 17:11:21,132 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 17:11:21,164 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 17:11:21,165 INFO L301 CfgBuilder]: Removed 7 assume(true) statements. [2021-11-23 17:11:21,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:11:21 BoogieIcfgContainer [2021-11-23 17:11:21,168 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 17:11:21,172 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 17:11:21,172 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 17:11:21,175 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 17:11:21,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 05:11:18" (1/3) ... [2021-11-23 17:11:21,177 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@788da0ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:11:21, skipping insertion in model container [2021-11-23 17:11:21,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:11:19" (2/3) ... [2021-11-23 17:11:21,178 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@788da0ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:11:21, skipping insertion in model container [2021-11-23 17:11:21,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:11:21" (3/3) ... [2021-11-23 17:11:21,180 INFO L111 eAbstractionObserver]: Analyzing ICFG tree_of_cslls.i [2021-11-23 17:11:21,187 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 17:11:21,188 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 104 error locations. [2021-11-23 17:11:21,260 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 17:11:21,268 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 17:11:21,269 INFO L340 AbstractCegarLoop]: Starting to check reachability of 104 error locations. [2021-11-23 17:11:21,292 INFO L276 IsEmpty]: Start isEmpty. Operand has 203 states, 98 states have (on average 2.2857142857142856) internal successors, (224), 202 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:11:21,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-23 17:11:21,302 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:11:21,303 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-23 17:11:21,304 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 100 more)] === [2021-11-23 17:11:21,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:11:21,311 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2021-11-23 17:11:21,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:11:21,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1584743890] [2021-11-23 17:11:21,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:11:21,330 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:11:21,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:11:21,334 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:11:21,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 17:11:21,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:11:21,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 17:11:21,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:11:21,563 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 6 treesize of output 5 [2021-11-23 17:11:21,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:11:21,582 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:11:21,583 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:11:21,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1584743890] [2021-11-23 17:11:21,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1584743890] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:11:21,586 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:11:21,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 17:11:21,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678829226] [2021-11-23 17:11:21,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:11:21,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 17:11:21,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:11:21,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 17:11:21,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 17:11:21,647 INFO L87 Difference]: Start difference. First operand has 203 states, 98 states have (on average 2.2857142857142856) internal successors, (224), 202 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:11:22,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:11:22,460 INFO L93 Difference]: Finished difference Result 275 states and 295 transitions. [2021-11-23 17:11:22,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 17:11:22,464 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2021-11-23 17:11:22,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:11:22,493 INFO L225 Difference]: With dead ends: 275 [2021-11-23 17:11:22,493 INFO L226 Difference]: Without dead ends: 271 [2021-11-23 17:11:22,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 17:11:22,500 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 191 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-23 17:11:22,502 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [191 Valid, 190 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-23 17:11:22,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2021-11-23 17:11:22,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 192. [2021-11-23 17:11:22,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 97 states have (on average 2.1237113402061856) internal successors, (206), 191 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:11:22,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 206 transitions. [2021-11-23 17:11:22,579 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 206 transitions. Word has length 3 [2021-11-23 17:11:22,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:11:22,580 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 206 transitions. [2021-11-23 17:11:22,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:11:22,580 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 206 transitions. [2021-11-23 17:11:22,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-23 17:11:22,581 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:11:22,581 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-23 17:11:22,597 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 17:11:22,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:11:22,793 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 100 more)] === [2021-11-23 17:11:22,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:11:22,794 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2021-11-23 17:11:22,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:11:22,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [569393560] [2021-11-23 17:11:22,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:11:22,795 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:11:22,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:11:22,799 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:11:22,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-23 17:11:22,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:11:22,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 17:11:22,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:11:22,917 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 6 treesize of output 5 [2021-11-23 17:11:22,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:11:22,932 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:11:22,932 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:11:22,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [569393560] [2021-11-23 17:11:22,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [569393560] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:11:22,941 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:11:22,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 17:11:22,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930582796] [2021-11-23 17:11:22,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:11:22,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 17:11:22,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:11:22,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 17:11:22,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 17:11:22,947 INFO L87 Difference]: Start difference. First operand 192 states and 206 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:11:23,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:11:23,600 INFO L93 Difference]: Finished difference Result 190 states and 204 transitions. [2021-11-23 17:11:23,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 17:11:23,602 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2021-11-23 17:11:23,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:11:23,603 INFO L225 Difference]: With dead ends: 190 [2021-11-23 17:11:23,604 INFO L226 Difference]: Without dead ends: 190 [2021-11-23 17:11:23,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 17:11:23,606 INFO L933 BasicCegarLoop]: 201 mSDtfsCounter, 2 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-23 17:11:23,607 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 301 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-23 17:11:23,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-11-23 17:11:23,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2021-11-23 17:11:23,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 97 states have (on average 2.1030927835051547) internal successors, (204), 189 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:11:23,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 204 transitions. [2021-11-23 17:11:23,639 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 204 transitions. Word has length 3 [2021-11-23 17:11:23,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:11:23,639 INFO L470 AbstractCegarLoop]: Abstraction has 190 states and 204 transitions. [2021-11-23 17:11:23,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:11:23,640 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 204 transitions. [2021-11-23 17:11:23,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-23 17:11:23,640 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:11:23,640 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-23 17:11:23,657 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-23 17:11:23,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:11:23,841 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 100 more)] === [2021-11-23 17:11:23,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:11:23,842 INFO L85 PathProgramCache]: Analyzing trace with hash 889446153, now seen corresponding path program 1 times [2021-11-23 17:11:23,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:11:23,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1499925482] [2021-11-23 17:11:23,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:11:23,850 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:11:23,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:11:23,852 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:11:23,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-23 17:11:23,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:11:23,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 17:11:23,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:11:24,056 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 6 treesize of output 5 [2021-11-23 17:11:24,071 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 6 treesize of output 5 [2021-11-23 17:11:24,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:11:24,213 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 14 [2021-11-23 17:11:24,233 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 17:11:24,234 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 16 [2021-11-23 17:11:24,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:11:24,259 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:11:24,259 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:11:24,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1499925482] [2021-11-23 17:11:24,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1499925482] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:11:24,265 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:11:24,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 17:11:24,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984703154] [2021-11-23 17:11:24,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:11:24,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 17:11:24,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:11:24,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 17:11:24,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 17:11:24,268 INFO L87 Difference]: Start difference. First operand 190 states and 204 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:11:25,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:11:25,550 INFO L93 Difference]: Finished difference Result 347 states and 373 transitions. [2021-11-23 17:11:25,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 17:11:25,551 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-23 17:11:25,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:11:25,554 INFO L225 Difference]: With dead ends: 347 [2021-11-23 17:11:25,554 INFO L226 Difference]: Without dead ends: 347 [2021-11-23 17:11:25,555 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 17:11:25,556 INFO L933 BasicCegarLoop]: 109 mSDtfsCounter, 270 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-23 17:11:25,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [270 Valid, 223 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-23 17:11:25,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2021-11-23 17:11:25,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 183. [2021-11-23 17:11:25,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 97 states have (on average 2.0309278350515463) internal successors, (197), 182 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:11:25,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 197 transitions. [2021-11-23 17:11:25,590 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 197 transitions. Word has length 6 [2021-11-23 17:11:25,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:11:25,590 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 197 transitions. [2021-11-23 17:11:25,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:11:25,591 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 197 transitions. [2021-11-23 17:11:25,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-23 17:11:25,591 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:11:25,592 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:11:25,616 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-23 17:11:25,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:11:25,812 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 100 more)] === [2021-11-23 17:11:25,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:11:25,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1113924364, now seen corresponding path program 1 times [2021-11-23 17:11:25,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:11:25,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [464866421] [2021-11-23 17:11:25,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:11:25,825 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:11:25,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:11:25,842 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:11:25,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-23 17:11:25,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:11:25,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 17:11:25,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:11:25,979 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 6 treesize of output 5 [2021-11-23 17:11:26,002 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 17:11:26,038 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 24 treesize of output 12 [2021-11-23 17:11:26,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:11:26,056 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:11:26,056 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:11:26,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [464866421] [2021-11-23 17:11:26,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [464866421] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:11:26,057 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:11:26,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 17:11:26,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162535227] [2021-11-23 17:11:26,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:11:26,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 17:11:26,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:11:26,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 17:11:26,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 17:11:26,059 INFO L87 Difference]: Start difference. First operand 183 states and 197 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:11:27,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:11:27,149 INFO L93 Difference]: Finished difference Result 182 states and 196 transitions. [2021-11-23 17:11:27,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 17:11:27,149 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-23 17:11:27,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:11:27,151 INFO L225 Difference]: With dead ends: 182 [2021-11-23 17:11:27,151 INFO L226 Difference]: Without dead ends: 182 [2021-11-23 17:11:27,152 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-23 17:11:27,153 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 5 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-23 17:11:27,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 472 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-23 17:11:27,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-11-23 17:11:27,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2021-11-23 17:11:27,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 97 states have (on average 2.020618556701031) internal successors, (196), 181 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:11:27,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 196 transitions. [2021-11-23 17:11:27,163 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 196 transitions. Word has length 10 [2021-11-23 17:11:27,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:11:27,163 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 196 transitions. [2021-11-23 17:11:27,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:11:27,164 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 196 transitions. [2021-11-23 17:11:27,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-23 17:11:27,164 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:11:27,164 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:11:27,193 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-23 17:11:27,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:11:27,393 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 100 more)] === [2021-11-23 17:11:27,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:11:27,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1113924365, now seen corresponding path program 1 times [2021-11-23 17:11:27,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:11:27,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1845565112] [2021-11-23 17:11:27,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:11:27,395 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:11:27,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:11:27,396 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:11:27,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-23 17:11:27,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:11:27,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-23 17:11:27,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:11:27,549 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 6 treesize of output 5 [2021-11-23 17:11:27,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 17:11:27,603 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 17:11:27,665 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 21 treesize of output 9 [2021-11-23 17:11:27,676 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-23 17:11:27,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:11:27,708 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:11:27,709 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:11:27,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1845565112] [2021-11-23 17:11:27,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1845565112] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:11:27,709 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:11:27,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 17:11:27,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278429978] [2021-11-23 17:11:27,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:11:27,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 17:11:27,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:11:27,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 17:11:27,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 17:11:27,720 INFO L87 Difference]: Start difference. First operand 182 states and 196 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:11:28,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:11:28,894 INFO L93 Difference]: Finished difference Result 181 states and 195 transitions. [2021-11-23 17:11:28,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 17:11:28,895 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-23 17:11:28,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:11:28,896 INFO L225 Difference]: With dead ends: 181 [2021-11-23 17:11:28,896 INFO L226 Difference]: Without dead ends: 181 [2021-11-23 17:11:28,897 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-23 17:11:28,898 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 3 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-23 17:11:28,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 493 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-23 17:11:28,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-11-23 17:11:28,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2021-11-23 17:11:28,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 97 states have (on average 2.0103092783505154) internal successors, (195), 180 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:11:28,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 195 transitions. [2021-11-23 17:11:28,912 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 195 transitions. Word has length 10 [2021-11-23 17:11:28,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:11:28,913 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 195 transitions. [2021-11-23 17:11:28,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:11:28,913 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 195 transitions. [2021-11-23 17:11:28,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-23 17:11:28,914 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:11:28,914 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:11:28,935 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-23 17:11:29,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:11:29,132 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 100 more)] === [2021-11-23 17:11:29,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:11:29,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1975621208, now seen corresponding path program 1 times [2021-11-23 17:11:29,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:11:29,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1335485144] [2021-11-23 17:11:29,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:11:29,134 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:11:29,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:11:29,144 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:11:29,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-23 17:11:29,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:11:29,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-23 17:11:29,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:11:29,390 INFO L354 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2021-11-23 17:11:29,390 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 21 [2021-11-23 17:11:29,544 INFO L354 Elim1Store]: treesize reduction 38, result has 39.7 percent of original size [2021-11-23 17:11:29,544 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 32 treesize of output 49 [2021-11-23 17:11:29,702 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 9 [2021-11-23 17:11:30,407 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 17:11:30,408 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 61 [2021-11-23 17:11:30,836 INFO L354 Elim1Store]: treesize reduction 41, result has 60.6 percent of original size [2021-11-23 17:11:30,837 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 5 case distinctions, treesize of input 57 treesize of output 106 [2021-11-23 17:11:32,703 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 81 treesize of output 51 [2021-11-23 17:11:34,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:11:34,393 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:11:34,393 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:11:34,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1335485144] [2021-11-23 17:11:34,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1335485144] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:11:34,393 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:11:34,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 17:11:34,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356526832] [2021-11-23 17:11:34,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:11:34,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 17:11:34,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:11:34,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 17:11:34,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-23 17:11:34,395 INFO L87 Difference]: Start difference. First operand 181 states and 195 transitions. Second operand has 9 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:11:35,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:11:35,899 INFO L93 Difference]: Finished difference Result 480 states and 526 transitions. [2021-11-23 17:11:35,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 17:11:35,899 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-23 17:11:35,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:11:35,903 INFO L225 Difference]: With dead ends: 480 [2021-11-23 17:11:35,904 INFO L226 Difference]: Without dead ends: 480 [2021-11-23 17:11:35,904 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-11-23 17:11:35,905 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 594 mSDsluCounter, 652 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 594 SdHoareTripleChecker+Valid, 776 SdHoareTripleChecker+Invalid, 962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 615 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-23 17:11:35,906 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [594 Valid, 776 Invalid, 962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 319 Invalid, 0 Unknown, 615 Unchecked, 1.1s Time] [2021-11-23 17:11:35,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2021-11-23 17:11:35,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 222. [2021-11-23 17:11:35,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 138 states have (on average 2.0217391304347827) internal successors, (279), 221 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:11:35,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 279 transitions. [2021-11-23 17:11:35,918 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 279 transitions. Word has length 14 [2021-11-23 17:11:35,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:11:35,919 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 279 transitions. [2021-11-23 17:11:35,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:11:35,919 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 279 transitions. [2021-11-23 17:11:35,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-23 17:11:35,920 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:11:35,920 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:11:35,932 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-23 17:11:36,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:11:36,127 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 100 more)] === [2021-11-23 17:11:36,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:11:36,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1975621209, now seen corresponding path program 1 times [2021-11-23 17:11:36,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:11:36,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1170731833] [2021-11-23 17:11:36,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:11:36,130 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:11:36,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:11:36,131 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:11:36,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-23 17:11:36,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:11:36,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-23 17:11:36,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:11:36,276 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 6 treesize of output 5 [2021-11-23 17:11:36,324 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 6 treesize of output 5 [2021-11-23 17:11:36,345 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 17:11:36,345 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 21 treesize of output 28 [2021-11-23 17:11:36,390 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 17:11:36,414 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 17:11:36,606 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 17:11:36,606 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 57 [2021-11-23 17:11:36,614 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 22 treesize of output 24 [2021-11-23 17:11:36,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:11:36,702 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 18 treesize of output 20 [2021-11-23 17:11:36,736 INFO L354 Elim1Store]: treesize reduction 8, result has 65.2 percent of original size [2021-11-23 17:11:36,736 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 32 treesize of output 34 [2021-11-23 17:11:36,788 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 31 treesize of output 13 [2021-11-23 17:11:36,796 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 19 treesize of output 7 [2021-11-23 17:11:36,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:11:36,822 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:11:36,823 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:11:36,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1170731833] [2021-11-23 17:11:36,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1170731833] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:11:36,823 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:11:36,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 17:11:36,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036735893] [2021-11-23 17:11:36,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:11:36,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 17:11:36,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:11:36,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 17:11:36,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-23 17:11:36,825 INFO L87 Difference]: Start difference. First operand 222 states and 279 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:11:38,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:11:38,928 INFO L93 Difference]: Finished difference Result 375 states and 448 transitions. [2021-11-23 17:11:38,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 17:11:38,929 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-23 17:11:38,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:11:38,932 INFO L225 Difference]: With dead ends: 375 [2021-11-23 17:11:38,932 INFO L226 Difference]: Without dead ends: 375 [2021-11-23 17:11:38,932 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-23 17:11:38,933 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 423 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 658 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-23 17:11:38,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [423 Valid, 412 Invalid, 682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 658 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-23 17:11:38,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2021-11-23 17:11:38,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 222. [2021-11-23 17:11:38,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 138 states have (on average 2.0144927536231885) internal successors, (278), 221 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:11:38,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 278 transitions. [2021-11-23 17:11:38,945 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 278 transitions. Word has length 14 [2021-11-23 17:11:38,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:11:38,945 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 278 transitions. [2021-11-23 17:11:38,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:11:38,946 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 278 transitions. [2021-11-23 17:11:38,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-23 17:11:38,947 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:11:38,947 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:11:38,972 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-23 17:11:39,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:11:39,175 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 100 more)] === [2021-11-23 17:11:39,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:11:39,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1114715313, now seen corresponding path program 1 times [2021-11-23 17:11:39,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:11:39,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [724230167] [2021-11-23 17:11:39,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:11:39,177 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:11:39,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:11:39,177 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:11:39,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-23 17:11:39,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:11:39,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 17:11:39,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:11:39,321 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 6 treesize of output 5 [2021-11-23 17:11:39,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:11:39,339 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:11:39,339 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:11:39,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [724230167] [2021-11-23 17:11:39,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [724230167] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:11:39,340 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:11:39,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 17:11:39,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846398672] [2021-11-23 17:11:39,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:11:39,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 17:11:39,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:11:39,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 17:11:39,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 17:11:39,342 INFO L87 Difference]: Start difference. First operand 222 states and 278 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:11:39,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:11:39,955 INFO L93 Difference]: Finished difference Result 341 states and 409 transitions. [2021-11-23 17:11:39,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 17:11:39,956 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-23 17:11:39,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:11:39,959 INFO L225 Difference]: With dead ends: 341 [2021-11-23 17:11:39,959 INFO L226 Difference]: Without dead ends: 341 [2021-11-23 17:11:39,959 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 17:11:39,960 INFO L933 BasicCegarLoop]: 240 mSDtfsCounter, 159 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-23 17:11:39,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [159 Valid, 318 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-23 17:11:39,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2021-11-23 17:11:39,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 219. [2021-11-23 17:11:39,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 138 states have (on average 1.9855072463768115) internal successors, (274), 218 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:11:39,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 274 transitions. [2021-11-23 17:11:39,972 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 274 transitions. Word has length 15 [2021-11-23 17:11:39,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:11:39,972 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 274 transitions. [2021-11-23 17:11:39,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:11:39,973 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 274 transitions. [2021-11-23 17:11:39,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-23 17:11:39,974 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:11:39,974 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:11:39,988 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-23 17:11:40,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:11:40,180 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 100 more)] === [2021-11-23 17:11:40,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:11:40,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1114715314, now seen corresponding path program 1 times [2021-11-23 17:11:40,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:11:40,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [184594280] [2021-11-23 17:11:40,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:11:40,181 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:11:40,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:11:40,182 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:11:40,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-23 17:11:40,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:11:40,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 17:11:40,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:11:40,343 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 17:11:40,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:11:40,367 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:11:40,367 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:11:40,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [184594280] [2021-11-23 17:11:40,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [184594280] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:11:40,368 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:11:40,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 17:11:40,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002789074] [2021-11-23 17:11:40,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:11:40,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 17:11:40,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:11:40,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 17:11:40,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 17:11:40,371 INFO L87 Difference]: Start difference. First operand 219 states and 274 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:11:41,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:11:41,062 INFO L93 Difference]: Finished difference Result 337 states and 423 transitions. [2021-11-23 17:11:41,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 17:11:41,063 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-23 17:11:41,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:11:41,065 INFO L225 Difference]: With dead ends: 337 [2021-11-23 17:11:41,065 INFO L226 Difference]: Without dead ends: 337 [2021-11-23 17:11:41,066 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 17:11:41,067 INFO L933 BasicCegarLoop]: 244 mSDtfsCounter, 130 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-23 17:11:41,067 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 329 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-23 17:11:41,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2021-11-23 17:11:41,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 217. [2021-11-23 17:11:41,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 138 states have (on average 1.963768115942029) internal successors, (271), 216 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:11:41,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 271 transitions. [2021-11-23 17:11:41,078 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 271 transitions. Word has length 15 [2021-11-23 17:11:41,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:11:41,078 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 271 transitions. [2021-11-23 17:11:41,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:11:41,079 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 271 transitions. [2021-11-23 17:11:41,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-23 17:11:41,080 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:11:41,080 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:11:41,094 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-11-23 17:11:41,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:11:41,294 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 100 more)] === [2021-11-23 17:11:41,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:11:41,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1114677643, now seen corresponding path program 1 times [2021-11-23 17:11:41,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:11:41,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1286888219] [2021-11-23 17:11:41,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:11:41,296 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:11:41,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:11:41,297 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:11:41,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-23 17:11:41,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:11:41,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 17:11:41,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:11:41,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:11:41,457 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:11:41,457 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:11:41,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1286888219] [2021-11-23 17:11:41,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1286888219] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:11:41,458 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:11:41,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 17:11:41,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684742052] [2021-11-23 17:11:41,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:11:41,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 17:11:41,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:11:41,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 17:11:41,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 17:11:41,460 INFO L87 Difference]: Start difference. First operand 217 states and 271 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:11:42,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:11:42,141 INFO L93 Difference]: Finished difference Result 287 states and 343 transitions. [2021-11-23 17:11:42,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 17:11:42,142 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-23 17:11:42,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:11:42,144 INFO L225 Difference]: With dead ends: 287 [2021-11-23 17:11:42,144 INFO L226 Difference]: Without dead ends: 287 [2021-11-23 17:11:42,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 17:11:42,145 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 312 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-23 17:11:42,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [312 Valid, 141 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-23 17:11:42,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-11-23 17:11:42,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 207. [2021-11-23 17:11:42,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 143 states have (on average 1.8111888111888113) internal successors, (259), 206 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:11:42,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 259 transitions. [2021-11-23 17:11:42,156 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 259 transitions. Word has length 15 [2021-11-23 17:11:42,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:11:42,156 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 259 transitions. [2021-11-23 17:11:42,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:11:42,157 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 259 transitions. [2021-11-23 17:11:42,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-23 17:11:42,158 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:11:42,158 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:11:42,178 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-23 17:11:42,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:11:42,378 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 100 more)] === [2021-11-23 17:11:42,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:11:42,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1114677644, now seen corresponding path program 1 times [2021-11-23 17:11:42,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:11:42,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [288986753] [2021-11-23 17:11:42,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:11:42,379 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:11:42,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:11:42,381 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:11:42,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-23 17:11:42,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:11:42,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 17:11:42,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:11:42,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:11:42,593 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:11:42,593 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:11:42,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [288986753] [2021-11-23 17:11:42,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [288986753] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:11:42,593 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:11:42,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 17:11:42,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639323] [2021-11-23 17:11:42,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:11:42,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 17:11:42,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:11:42,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 17:11:42,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 17:11:42,596 INFO L87 Difference]: Start difference. First operand 207 states and 259 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:11:43,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:11:43,861 INFO L93 Difference]: Finished difference Result 506 states and 617 transitions. [2021-11-23 17:11:43,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 17:11:43,862 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-23 17:11:43,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:11:43,865 INFO L225 Difference]: With dead ends: 506 [2021-11-23 17:11:43,866 INFO L226 Difference]: Without dead ends: 506 [2021-11-23 17:11:43,866 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-23 17:11:43,867 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 666 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 666 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-23 17:11:43,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [666 Valid, 266 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-23 17:11:43,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2021-11-23 17:11:43,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 375. [2021-11-23 17:11:43,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 311 states have (on average 1.7684887459807075) internal successors, (550), 374 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:11:43,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 550 transitions. [2021-11-23 17:11:43,885 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 550 transitions. Word has length 15 [2021-11-23 17:11:43,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:11:43,886 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 550 transitions. [2021-11-23 17:11:43,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:11:43,887 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 550 transitions. [2021-11-23 17:11:43,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-23 17:11:43,887 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:11:43,888 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:11:43,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-23 17:11:44,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:11:44,091 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 100 more)] === [2021-11-23 17:11:44,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:11:44,092 INFO L85 PathProgramCache]: Analyzing trace with hash -203231137, now seen corresponding path program 1 times [2021-11-23 17:11:44,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:11:44,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [568865399] [2021-11-23 17:11:44,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:11:44,092 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:11:44,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:11:44,094 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:11:44,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-23 17:11:44,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:11:44,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-23 17:11:44,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:11:44,276 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 6 treesize of output 5 [2021-11-23 17:11:44,309 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 17:11:44,309 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2021-11-23 17:11:44,336 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 17:11:44,348 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 17:11:44,504 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 17:11:44,505 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 36 [2021-11-23 17:11:44,511 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 22 treesize of output 24 [2021-11-23 17:11:44,580 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 17:11:44,580 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2021-11-23 17:11:44,766 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 36 treesize of output 36 [2021-11-23 17:11:44,775 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 35 treesize of output 35 [2021-11-23 17:11:44,870 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 39 treesize of output 21 [2021-11-23 17:11:44,876 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 32 treesize of output 14 [2021-11-23 17:11:44,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:11:44,916 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:11:44,917 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:11:44,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [568865399] [2021-11-23 17:11:44,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [568865399] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:11:44,917 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:11:44,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-23 17:11:44,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068945380] [2021-11-23 17:11:44,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:11:44,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-23 17:11:44,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:11:44,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-23 17:11:44,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-11-23 17:11:44,919 INFO L87 Difference]: Start difference. First operand 375 states and 550 transitions. Second operand has 11 states, 10 states have (on average 1.8) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:11:47,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:11:47,565 INFO L93 Difference]: Finished difference Result 606 states and 874 transitions. [2021-11-23 17:11:47,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-23 17:11:47,571 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.8) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-23 17:11:47,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:11:47,579 INFO L225 Difference]: With dead ends: 606 [2021-11-23 17:11:47,580 INFO L226 Difference]: Without dead ends: 606 [2021-11-23 17:11:47,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2021-11-23 17:11:47,582 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 373 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-23 17:11:47,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [373 Valid, 642 Invalid, 766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 737 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-23 17:11:47,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2021-11-23 17:11:47,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 379. [2021-11-23 17:11:47,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 315 states have (on average 1.7619047619047619) internal successors, (555), 378 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:11:47,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 555 transitions. [2021-11-23 17:11:47,600 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 555 transitions. Word has length 18 [2021-11-23 17:11:47,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:11:47,601 INFO L470 AbstractCegarLoop]: Abstraction has 379 states and 555 transitions. [2021-11-23 17:11:47,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.8) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:11:47,604 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 555 transitions. [2021-11-23 17:11:47,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-23 17:11:47,606 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:11:47,606 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:11:47,618 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-23 17:11:47,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:11:47,807 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 100 more)] === [2021-11-23 17:11:47,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:11:47,807 INFO L85 PathProgramCache]: Analyzing trace with hash -203231138, now seen corresponding path program 1 times [2021-11-23 17:11:47,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:11:47,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [176159295] [2021-11-23 17:11:47,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:11:47,808 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:11:47,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:11:47,808 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:11:47,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-23 17:11:47,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:11:47,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-23 17:11:47,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:11:47,982 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 6 treesize of output 5 [2021-11-23 17:11:48,013 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 17:11:48,014 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 18 treesize of output 18 [2021-11-23 17:11:48,036 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 17:11:48,152 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 17:11:48,153 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 26 [2021-11-23 17:11:48,184 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 17:11:48,184 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 16 [2021-11-23 17:11:48,300 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 36 treesize of output 36 [2021-11-23 17:11:48,357 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 39 treesize of output 21 [2021-11-23 17:11:48,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:11:48,381 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:11:48,381 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:11:48,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [176159295] [2021-11-23 17:11:48,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [176159295] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:11:48,381 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:11:48,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-23 17:11:48,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639431612] [2021-11-23 17:11:48,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:11:48,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-23 17:11:48,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:11:48,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-23 17:11:48,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-11-23 17:11:48,383 INFO L87 Difference]: Start difference. First operand 379 states and 555 transitions. Second operand has 11 states, 10 states have (on average 1.8) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:11:50,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:11:50,617 INFO L93 Difference]: Finished difference Result 696 states and 991 transitions. [2021-11-23 17:11:50,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-23 17:11:50,618 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.8) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-23 17:11:50,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:11:50,623 INFO L225 Difference]: With dead ends: 696 [2021-11-23 17:11:50,623 INFO L226 Difference]: Without dead ends: 696 [2021-11-23 17:11:50,624 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2021-11-23 17:11:50,624 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 578 mSDsluCounter, 919 mSDsCounter, 0 mSdLazyCounter, 828 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 578 SdHoareTripleChecker+Valid, 1096 SdHoareTripleChecker+Invalid, 871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-23 17:11:50,625 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [578 Valid, 1096 Invalid, 871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 828 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-23 17:11:50,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2021-11-23 17:11:50,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 378. [2021-11-23 17:11:50,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 315 states have (on average 1.7555555555555555) internal successors, (553), 377 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:11:50,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 553 transitions. [2021-11-23 17:11:50,642 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 553 transitions. Word has length 18 [2021-11-23 17:11:50,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:11:50,642 INFO L470 AbstractCegarLoop]: Abstraction has 378 states and 553 transitions. [2021-11-23 17:11:50,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.8) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:11:50,643 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 553 transitions. [2021-11-23 17:11:50,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-23 17:11:50,644 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:11:50,644 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:11:50,663 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-23 17:11:50,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:11:50,859 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 100 more)] === [2021-11-23 17:11:50,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:11:50,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1227749363, now seen corresponding path program 1 times [2021-11-23 17:11:50,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:11:50,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [631334017] [2021-11-23 17:11:50,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:11:50,860 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:11:50,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:11:50,862 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:11:50,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-23 17:11:50,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:11:51,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 17:11:51,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:11:51,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:11:51,069 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:11:51,069 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:11:51,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [631334017] [2021-11-23 17:11:51,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [631334017] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:11:51,070 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:11:51,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 17:11:51,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478173753] [2021-11-23 17:11:51,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:11:51,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 17:11:51,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:11:51,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 17:11:51,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 17:11:51,072 INFO L87 Difference]: Start difference. First operand 378 states and 553 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:11:51,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:11:51,089 INFO L93 Difference]: Finished difference Result 381 states and 556 transitions. [2021-11-23 17:11:51,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 17:11:51,089 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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 21 [2021-11-23 17:11:51,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:11:51,094 INFO L225 Difference]: With dead ends: 381 [2021-11-23 17:11:51,094 INFO L226 Difference]: Without dead ends: 381 [2021-11-23 17:11:51,094 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 17:11:51,099 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 0 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 17:11:51,099 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 340 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 17:11:51,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2021-11-23 17:11:51,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 381. [2021-11-23 17:11:51,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 318 states have (on average 1.748427672955975) internal successors, (556), 380 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:11:51,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 556 transitions. [2021-11-23 17:11:51,113 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 556 transitions. Word has length 21 [2021-11-23 17:11:51,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:11:51,114 INFO L470 AbstractCegarLoop]: Abstraction has 381 states and 556 transitions. [2021-11-23 17:11:51,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:11:51,114 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 556 transitions. [2021-11-23 17:11:51,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-23 17:11:51,117 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:11:51,118 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:11:51,139 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-23 17:11:51,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:11:51,339 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 100 more)] === [2021-11-23 17:11:51,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:11:51,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1847606352, now seen corresponding path program 1 times [2021-11-23 17:11:51,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:11:51,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [183554878] [2021-11-23 17:11:51,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:11:51,340 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:11:51,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:11:51,342 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:11:51,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-23 17:11:51,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:11:51,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-23 17:11:51,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:11:51,613 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 6 treesize of output 5 [2021-11-23 17:11:51,642 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 17:11:51,642 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 18 treesize of output 18 [2021-11-23 17:11:51,661 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 17:11:51,781 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 17:11:51,781 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 26 [2021-11-23 17:11:51,819 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 17:11:51,819 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 16 [2021-11-23 17:11:51,870 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2021-11-23 17:11:51,949 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 17:11:51,950 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 38 [2021-11-23 17:11:52,018 INFO L354 Elim1Store]: treesize reduction 30, result has 31.8 percent of original size [2021-11-23 17:11:52,018 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 21 treesize of output 26 [2021-11-23 17:11:52,064 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 34 treesize of output 16 [2021-11-23 17:11:52,090 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:11:52,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 17:11:52,213 INFO L354 Elim1Store]: treesize reduction 5, result has 70.6 percent of original size [2021-11-23 17:11:52,213 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 32 treesize of output 31 [2021-11-23 17:11:52,224 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_435 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_#t~mem11#1.base| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem11#1.base| v_ArrVal_435) |c_ULTIMATE.start_main_~tree~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|)))) is different from false [2021-11-23 17:11:52,239 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_435 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base|) .cse1))) (= (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_435) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse1) .cse0)))) is different from false [2021-11-23 17:11:52,267 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_434 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_435 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tmpList~0#1.base| v_ArrVal_434)) (.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~tree~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_435) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse2))))) is different from false [2021-11-23 17:11:52,323 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~tmpList~0#1.base_22| (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~tmpList~0#1.base_22|)))) (forall ((v_ArrVal_434 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_435 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~tmpList~0#1.base_22| v_ArrVal_434)) (.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~tree~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_435) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse2))))))) is different from false [2021-11-23 17:11:52,385 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_433 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_434 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_435 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~tmpList~0#1.base_22| (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~tmpList~0#1.base_22|)))) (let ((.cse0 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_433) |v_ULTIMATE.start_main_~tmpList~0#1.base_22| v_ArrVal_434)) (.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~tree~0#1.base|) .cse2))) (= (select (select (store .cse0 .cse1 v_ArrVal_435) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse2) .cse1))))) is different from false [2021-11-23 17:11:52,469 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_433 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_434 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_435 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~tmpList~0#1.base_22| (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~tmpList~0#1.base_22|)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (let ((.cse1 (store (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base|) .cse2) v_ArrVal_433) |v_ULTIMATE.start_main_~tmpList~0#1.base_22| v_ArrVal_434))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~tree~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_435) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse2))))))) is different from false [2021-11-23 17:11:52,553 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 17:11:52,554 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 72 treesize of output 53 [2021-11-23 17:11:52,560 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 17:11:52,565 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 364 treesize of output 274 [2021-11-23 17:11:52,595 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 140 treesize of output 92 [2021-11-23 17:11:52,603 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 92 treesize of output 76 [2021-11-23 17:11:52,622 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-23 17:11:52,622 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 18 treesize of output 17 [2021-11-23 17:11:52,685 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2021-11-23 17:11:52,685 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:11:52,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [183554878] [2021-11-23 17:11:52,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [183554878] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 17:11:52,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2141789939] [2021-11-23 17:11:52,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:11:52,686 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 17:11:52,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/cvc4 [2021-11-23 17:11:52,689 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 17:11:52,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-23 17:11:53,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:11:53,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-23 17:11:53,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:11:53,185 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-23 17:11:53,185 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 15 treesize of output 20 [2021-11-23 17:11:53,318 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-11-23 17:11:53,319 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 32 [2021-11-23 17:11:53,382 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 17:11:53,582 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 17:11:53,583 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 34 [2021-11-23 17:11:53,683 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 17:11:53,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2021-11-23 17:11:53,966 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 45 treesize of output 43 [2021-11-23 17:11:54,175 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 17:11:54,175 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 52 [2021-11-23 17:11:54,299 INFO L354 Elim1Store]: treesize reduction 33, result has 43.1 percent of original size [2021-11-23 17:11:54,299 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2021-11-23 17:11:54,370 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 41 treesize of output 25 [2021-11-23 17:11:54,424 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:11:54,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 17:11:54,515 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_487 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem11#1.base| v_ArrVal_487) |c_ULTIMATE.start_main_~tree~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))))))))))) (_ bv1 1)))) is different from false [2021-11-23 17:11:54,531 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_487 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base|) .cse0) v_ArrVal_487) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse0)))))))))))))))) is different from false [2021-11-23 17:11:54,559 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_486 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_487 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tmpList~0#1.base| v_ArrVal_486))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~tree~0#1.base|) .cse1) v_ArrVal_487)) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse1))))))))))))) (_ bv1 1)))) is different from false [2021-11-23 17:11:54,590 INFO L354 Elim1Store]: treesize reduction 5, result has 82.8 percent of original size [2021-11-23 17:11:54,590 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 49 treesize of output 48 [2021-11-23 17:11:54,606 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_486 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_487 (Array (_ BitVec 32) (_ BitVec 32)))) (= (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tmpList~0#1.base| v_ArrVal_486))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~tree~0#1.base|) .cse1) v_ArrVal_487)) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse1)) |c_ULTIMATE.start_main_#t~mem9#1.base|)) is different from false [2021-11-23 17:11:54,623 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_486 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_487 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tmpList~0#1.base| v_ArrVal_486))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~tree~0#1.base|) .cse1) v_ArrVal_487)) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse1) (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base|) .cse1)))) is different from false [2021-11-23 17:11:54,659 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~tmpList~0#1.base_25| (_ BitVec 32))) (or (forall ((v_ArrVal_486 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_487 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~tmpList~0#1.base_25| v_ArrVal_486))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~tree~0#1.base|) .cse1) v_ArrVal_487)) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse1) (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base|) .cse1)))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~tmpList~0#1.base_25|))))) is different from false [2021-11-23 17:11:54,729 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_486 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_487 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_485 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~tmpList~0#1.base_25| (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~tmpList~0#1.base_25|))) (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_485)) (.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (= (select (select .cse0 |c_ULTIMATE.start_main_~tree~0#1.base|) .cse1) (select (select (let ((.cse2 (store .cse0 |v_ULTIMATE.start_main_~tmpList~0#1.base_25| v_ArrVal_486))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~tree~0#1.base|) .cse1) v_ArrVal_487)) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse1))))) is different from false [2021-11-23 17:11:54,803 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-23 17:11:54,803 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 16 [2021-11-23 17:11:54,833 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_486 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_487 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_485 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~tmpList~0#1.base_25| (_ BitVec 32))) (or (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (let ((.cse2 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base|) .cse1) v_ArrVal_485))) (= (select (select (let ((.cse0 (store .cse2 |v_ULTIMATE.start_main_~tmpList~0#1.base_25| v_ArrVal_486))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~tree~0#1.base|) .cse1) v_ArrVal_487)) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse1) (select (select .cse2 |c_ULTIMATE.start_main_~tree~0#1.base|) .cse1)))) (= |c_ULTIMATE.start_main_~tree~0#1.base| |v_ULTIMATE.start_main_~tmpList~0#1.base_25|))) is different from false [2021-11-23 17:11:54,880 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 17:11:54,881 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 1 case distinctions, treesize of input 69 treesize of output 50 [2021-11-23 17:11:54,885 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 17:11:54,888 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 244 treesize of output 190 [2021-11-23 17:11:54,915 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 141 treesize of output 109 [2021-11-23 17:11:54,926 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 93 [2021-11-23 17:11:55,036 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2021-11-23 17:11:55,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2141789939] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 17:11:55,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398480542] [2021-11-23 17:11:55,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:11:55,037 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 17:11:55,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:11:55,043 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 17:11:55,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-23 17:11:55,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:11:55,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-23 17:11:55,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:11:55,234 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 6 treesize of output 5 [2021-11-23 17:11:55,255 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 17:11:55,256 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 16 [2021-11-23 17:11:55,270 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 17:11:55,353 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 17:11:55,354 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 26 [2021-11-23 17:11:55,398 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 17:11:55,398 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2021-11-23 17:11:55,431 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 17 treesize of output 19 [2021-11-23 17:11:55,577 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 17:11:55,577 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2021-11-23 17:11:55,666 INFO L354 Elim1Store]: treesize reduction 33, result has 43.1 percent of original size [2021-11-23 17:11:55,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 40 [2021-11-23 17:11:55,738 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 34 treesize of output 16 [2021-11-23 17:11:55,743 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:11:55,743 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 17:11:55,856 INFO L354 Elim1Store]: treesize reduction 5, result has 70.6 percent of original size [2021-11-23 17:11:55,856 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 30 [2021-11-23 17:11:55,867 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_538 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem11#1.base| v_ArrVal_538) |c_ULTIMATE.start_main_~tree~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|)) |c_ULTIMATE.start_main_#t~mem11#1.base|)) is different from false [2021-11-23 17:11:55,881 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_538 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base|) .cse1))) (= (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_538) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse1) .cse0)))) is different from false [2021-11-23 17:11:55,905 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_538 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_537 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tmpList~0#1.base| v_ArrVal_537)) (.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~tree~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_538) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse2))))) is different from false [2021-11-23 17:11:55,955 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~tmpList~0#1.base_28| (_ BitVec 32))) (or (forall ((v_ArrVal_538 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_537 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~tmpList~0#1.base_28| v_ArrVal_537)) (.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~tree~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_538) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse2))))) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~tmpList~0#1.base_28|))))))) is different from false [2021-11-23 17:11:56,008 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~tmpList~0#1.base_28| (_ BitVec 32)) (v_ArrVal_538 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_536 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_537 (Array (_ BitVec 32) (_ BitVec 32)))) (or (let ((.cse1 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_536) |v_ULTIMATE.start_main_~tmpList~0#1.base_28| v_ArrVal_537)) (.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~tree~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_538) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse2)))) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~tmpList~0#1.base_28|))))))) is different from false [2021-11-23 17:11:56,071 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~tmpList~0#1.base_28| (_ BitVec 32)) (v_ArrVal_538 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_536 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_537 (Array (_ BitVec 32) (_ BitVec 32)))) (or (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (let ((.cse0 (store (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base|) .cse2) v_ArrVal_536) |v_ULTIMATE.start_main_~tmpList~0#1.base_28| v_ArrVal_537))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~tree~0#1.base|) .cse2))) (= (select (select (store .cse0 .cse1 v_ArrVal_538) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse2) .cse1)))) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~tmpList~0#1.base_28|))))))) is different from false [2021-11-23 17:11:56,136 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 17:11:56,137 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 72 treesize of output 53 [2021-11-23 17:11:56,141 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 17:11:56,146 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 192 treesize of output 138 [2021-11-23 17:11:56,159 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 66 treesize of output 42 [2021-11-23 17:11:56,169 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-23 17:11:56,181 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-23 17:11:56,182 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 18 [2021-11-23 17:11:56,210 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2021-11-23 17:11:56,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398480542] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 17:11:56,210 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-23 17:11:56,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 12, 13, 10, 11] total 44 [2021-11-23 17:11:56,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70125509] [2021-11-23 17:11:56,211 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-23 17:11:56,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2021-11-23 17:11:56,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:11:56,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-11-23 17:11:56,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=522, Unknown=20, NotChecked=1300, Total=1980 [2021-11-23 17:11:56,216 INFO L87 Difference]: Start difference. First operand 381 states and 556 transitions. Second operand has 45 states, 44 states have (on average 2.0454545454545454) internal successors, (90), 45 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:11:56,285 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse3 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|)))) (and (forall ((v_ArrVal_433 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_434 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_435 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~tmpList~0#1.base_22| (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~tmpList~0#1.base_22|)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (let ((.cse1 (store (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base|) .cse2) v_ArrVal_433) |v_ULTIMATE.start_main_~tmpList~0#1.base_22| v_ArrVal_434))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~tree~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_435) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse2))))))) (= |c_ULTIMATE.start_main_~tree~0#1.offset| (_ bv0 32)) (not (= .cse3 |c_ULTIMATE.start_main_~tree~0#1.base|)) (not (= (_ bv1 32) |c_ULTIMATE.start_main_#t~malloc4#1.base|)) (forall ((|v_ULTIMATE.start_main_~tmpList~0#1.base_28| (_ BitVec 32)) (v_ArrVal_538 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_536 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_537 (Array (_ BitVec 32) (_ BitVec 32)))) (or (let ((.cse6 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (let ((.cse4 (store (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base|) .cse6) v_ArrVal_536) |v_ULTIMATE.start_main_~tmpList~0#1.base_28| v_ArrVal_537))) (let ((.cse5 (select (select .cse4 |c_ULTIMATE.start_main_~tree~0#1.base|) .cse6))) (= (select (select (store .cse4 .cse5 v_ArrVal_538) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse6) .cse5)))) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~tmpList~0#1.base_28|))))))) (not (= .cse3 (_ bv1 32))) (not (= |c_ULTIMATE.start_main_~tree~0#1.base| |c_ULTIMATE.start_main_#t~malloc4#1.base|)) (= (_ bv0 1) (bvadd (bvneg (bvneg (select |c_#valid| |c_ULTIMATE.start_main_~tree~0#1.base|))) (_ bv1 1))) (forall ((v_ArrVal_486 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_487 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_485 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~tmpList~0#1.base_25| (_ BitVec 32))) (or (let ((.cse8 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (let ((.cse9 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base|) .cse8) v_ArrVal_485))) (= (select (select (let ((.cse7 (store .cse9 |v_ULTIMATE.start_main_~tmpList~0#1.base_25| v_ArrVal_486))) (store .cse7 (select (select .cse7 |c_ULTIMATE.start_main_~tree~0#1.base|) .cse8) v_ArrVal_487)) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse8) (select (select .cse9 |c_ULTIMATE.start_main_~tree~0#1.base|) .cse8)))) (= |c_ULTIMATE.start_main_~tree~0#1.base| |v_ULTIMATE.start_main_~tmpList~0#1.base_25|))))) is different from false [2021-11-23 17:11:56,303 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse3 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|)))) (and (forall ((v_ArrVal_433 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_434 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_435 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~tmpList~0#1.base_22| (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~tmpList~0#1.base_22|)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (let ((.cse1 (store (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base|) .cse2) v_ArrVal_433) |v_ULTIMATE.start_main_~tmpList~0#1.base_22| v_ArrVal_434))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~tree~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_435) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse2))))))) (= |c_ULTIMATE.start_main_~tree~0#1.offset| (_ bv0 32)) (not (= .cse3 |c_ULTIMATE.start_main_~tree~0#1.base|)) (forall ((|v_ULTIMATE.start_main_~tmpList~0#1.base_28| (_ BitVec 32)) (v_ArrVal_538 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_536 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_537 (Array (_ BitVec 32) (_ BitVec 32)))) (or (let ((.cse6 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (let ((.cse4 (store (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base|) .cse6) v_ArrVal_536) |v_ULTIMATE.start_main_~tmpList~0#1.base_28| v_ArrVal_537))) (let ((.cse5 (select (select .cse4 |c_ULTIMATE.start_main_~tree~0#1.base|) .cse6))) (= (select (select (store .cse4 .cse5 v_ArrVal_538) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse6) .cse5)))) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~tmpList~0#1.base_28|))))))) (not (= .cse3 (_ bv1 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (select |c_#valid| |c_ULTIMATE.start_main_~tree~0#1.base|))) (_ bv1 1))) (forall ((v_ArrVal_486 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_487 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_485 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~tmpList~0#1.base_25| (_ BitVec 32))) (or (let ((.cse8 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (let ((.cse9 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base|) .cse8) v_ArrVal_485))) (= (select (select (let ((.cse7 (store .cse9 |v_ULTIMATE.start_main_~tmpList~0#1.base_25| v_ArrVal_486))) (store .cse7 (select (select .cse7 |c_ULTIMATE.start_main_~tree~0#1.base|) .cse8) v_ArrVal_487)) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse8) (select (select .cse9 |c_ULTIMATE.start_main_~tree~0#1.base|) .cse8)))) (= |c_ULTIMATE.start_main_~tree~0#1.base| |v_ULTIMATE.start_main_~tmpList~0#1.base_25|))))) is different from false [2021-11-23 17:12:15,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:12:15,589 INFO L93 Difference]: Finished difference Result 567 states and 796 transitions. [2021-11-23 17:12:15,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-23 17:12:15,590 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 44 states have (on average 2.0454545454545454) internal successors, (90), 45 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-11-23 17:12:15,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:12:15,594 INFO L225 Difference]: With dead ends: 567 [2021-11-23 17:12:15,595 INFO L226 Difference]: Without dead ends: 567 [2021-11-23 17:12:15,596 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 75 SyntacticMatches, 17 SemanticMatches, 50 ConstructedPredicates, 22 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 18.3s TimeCoverageRelationStatistics Valid=215, Invalid=713, Unknown=30, NotChecked=1694, Total=2652 [2021-11-23 17:12:15,598 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 379 mSDsluCounter, 2193 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 2368 SdHoareTripleChecker+Invalid, 4797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4011 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-23 17:12:15,598 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [379 Valid, 2368 Invalid, 4797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 755 Invalid, 0 Unknown, 4011 Unchecked, 2.3s Time] [2021-11-23 17:12:15,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2021-11-23 17:12:15,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 380. [2021-11-23 17:12:15,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 318 states have (on average 1.7452830188679245) internal successors, (555), 379 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:12:15,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 555 transitions. [2021-11-23 17:12:15,618 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 555 transitions. Word has length 22 [2021-11-23 17:12:15,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:12:15,618 INFO L470 AbstractCegarLoop]: Abstraction has 380 states and 555 transitions. [2021-11-23 17:12:15,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 44 states have (on average 2.0454545454545454) internal successors, (90), 45 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:12:15,619 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 555 transitions. [2021-11-23 17:12:15,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-23 17:12:15,620 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:12:15,621 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:12:15,671 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-23 17:12:15,847 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2021-11-23 17:12:16,057 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-23 17:12:16,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:12:16,238 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 100 more)] === [2021-11-23 17:12:16,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:12:16,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1847606353, now seen corresponding path program 1 times [2021-11-23 17:12:16,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:12:16,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [760071827] [2021-11-23 17:12:16,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:12:16,239 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:12:16,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:12:16,241 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:12:16,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-23 17:12:16,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:12:16,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-23 17:12:16,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:12:16,559 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 6 treesize of output 5 [2021-11-23 17:12:16,587 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 6 treesize of output 5 [2021-11-23 17:12:16,620 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 17:12:16,621 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 30 [2021-11-23 17:12:16,671 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 17:12:16,694 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 17:12:16,927 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 17:12:16,927 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 63 [2021-11-23 17:12:16,936 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 22 treesize of output 24 [2021-11-23 17:12:17,068 INFO L354 Elim1Store]: treesize reduction 23, result has 47.7 percent of original size [2021-11-23 17:12:17,068 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 18 treesize of output 30 [2021-11-23 17:12:17,118 INFO L354 Elim1Store]: treesize reduction 8, result has 65.2 percent of original size [2021-11-23 17:12:17,119 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 38 treesize of output 40 [2021-11-23 17:12:17,308 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-11-23 17:12:17,319 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 36 [2021-11-23 17:12:17,500 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 17:12:17,500 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2021-11-23 17:12:17,508 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 22 treesize of output 24 [2021-11-23 17:12:17,602 INFO L354 Elim1Store]: treesize reduction 33, result has 25.0 percent of original size [2021-11-23 17:12:17,602 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 18 treesize of output 20 [2021-11-23 17:12:17,655 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 31 treesize of output 13 [2021-11-23 17:12:17,662 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 19 treesize of output 7 [2021-11-23 17:12:17,698 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:12:17,698 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 17:12:18,123 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_596 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_598 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~tmpList~0#1.base_30| (_ BitVec 32))) (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem11#1.base| v_ArrVal_598) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse0)) (select (store |c_#length| |v_ULTIMATE.start_main_~tmpList~0#1.base_30| (_ bv4 32)) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem11#1.base| v_ArrVal_596) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse0))))) (forall ((v_ArrVal_598 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem11#1.base| v_ArrVal_598) |c_ULTIMATE.start_main_~tree~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|)))) (bvule .cse1 (bvadd (_ bv4 32) .cse1))))) is different from false [2021-11-23 17:12:18,182 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_596 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_598 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~tmpList~0#1.base_30| (_ BitVec 32))) (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_598) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse1)) (select (store |c_#length| |v_ULTIMATE.start_main_~tmpList~0#1.base_30| (_ bv4 32)) (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_596) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse1)))))) (forall ((v_ArrVal_598 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base|) .cse3) v_ArrVal_598) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse3)))) (bvule .cse2 (bvadd (_ bv4 32) .cse2))))) is different from false [2021-11-23 17:12:18,371 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_596 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_598 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_594 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_595 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~tmpList~0#1.base_30| (_ BitVec 32))) (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tmpList~0#1.base| v_ArrVal_595)) (.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~tree~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~tmpList~0#1.base| v_ArrVal_594) .cse0 v_ArrVal_598) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse1) (_ bv4 32)) (select (store |c_#length| |v_ULTIMATE.start_main_~tmpList~0#1.base_30| (_ bv4 32)) (select (select (store .cse2 .cse0 v_ArrVal_596) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse1)))))) (forall ((v_ArrVal_598 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_594 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_595 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (let ((.cse4 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~tmpList~0#1.base| v_ArrVal_594) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tmpList~0#1.base| v_ArrVal_595) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse4) v_ArrVal_598) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse4)))) (bvule .cse3 (bvadd .cse3 (_ bv4 32)))))) is different from false [2021-11-23 17:12:19,303 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~tmpList~0#1.base_31| (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~tmpList~0#1.base_31|))) (and (forall ((v_ArrVal_598 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_592 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_594 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_595 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_591 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_592) |v_ULTIMATE.start_main_~tmpList~0#1.base_31| v_ArrVal_594) (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_591) |v_ULTIMATE.start_main_~tmpList~0#1.base_31| v_ArrVal_595) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse1) v_ArrVal_598) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse1)))) (bvule .cse0 (bvadd .cse0 (_ bv4 32))))) (forall ((v_ArrVal_596 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_598 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_592 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_594 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_595 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~tmpList~0#1.base_30| (_ BitVec 32)) (v_ArrVal_591 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_593 (_ BitVec 32))) (let ((.cse4 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_591) |v_ULTIMATE.start_main_~tmpList~0#1.base_31| v_ArrVal_595)) (.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (let ((.cse2 (select (select .cse4 |c_ULTIMATE.start_main_~tree~0#1.base|) .cse3))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_592) |v_ULTIMATE.start_main_~tmpList~0#1.base_31| v_ArrVal_594) .cse2 v_ArrVal_598) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse3) (_ bv4 32)) (select (store (store |c_#length| |v_ULTIMATE.start_main_~tmpList~0#1.base_31| v_ArrVal_593) |v_ULTIMATE.start_main_~tmpList~0#1.base_30| (_ bv4 32)) (select (select (store .cse4 .cse2 v_ArrVal_596) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse3))))))))) is different from false [2021-11-23 17:12:19,600 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~tmpList~0#1.base_31| (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~tmpList~0#1.base_31|))) (and (forall ((v_ArrVal_598 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_592 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_594 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_595 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_591 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (select (select (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_592) |v_ULTIMATE.start_main_~tmpList~0#1.base_31| v_ArrVal_594) (select (select (store (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_591) |v_ULTIMATE.start_main_~tmpList~0#1.base_31| v_ArrVal_595) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse2) v_ArrVal_598)) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse2)))) (bvule .cse0 (bvadd (_ bv4 32) .cse0)))) (forall ((v_ArrVal_596 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_598 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_592 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_594 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_595 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~tmpList~0#1.base_30| (_ BitVec 32)) (v_ArrVal_591 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_593 (_ BitVec 32))) (let ((.cse5 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (let ((.cse3 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base|) .cse5))) (let ((.cse6 (store (store |c_#memory_$Pointer$.base| .cse3 v_ArrVal_591) |v_ULTIMATE.start_main_~tmpList~0#1.base_31| v_ArrVal_595))) (let ((.cse4 (select (select .cse6 |c_ULTIMATE.start_main_~tree~0#1.base|) .cse5))) (bvule (bvadd (_ bv4 32) (select (select (store (store (store |c_#memory_$Pointer$.offset| .cse3 v_ArrVal_592) |v_ULTIMATE.start_main_~tmpList~0#1.base_31| v_ArrVal_594) .cse4 v_ArrVal_598) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse5)) (select (store (store |c_#length| |v_ULTIMATE.start_main_~tmpList~0#1.base_31| v_ArrVal_593) |v_ULTIMATE.start_main_~tmpList~0#1.base_30| (_ bv4 32)) (select (select (store .cse6 .cse4 v_ArrVal_596) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse5))))))))))) is different from false [2021-11-23 17:12:19,839 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 17:12:19,839 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 207 treesize of output 188 [2021-11-23 17:12:19,879 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 17:12:19,880 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 188 treesize of output 148 [2021-11-23 17:12:19,884 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 17:12:19,889 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 1010 treesize of output 884 [2021-11-23 17:12:19,902 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 17:12:19,912 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 4602 treesize of output 4356 [2021-11-23 17:12:20,012 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 4293 treesize of output 4037 [2021-11-23 17:12:20,048 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 4037 treesize of output 3909 [2021-11-23 17:12:20,088 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 3909 treesize of output 3653 [2021-11-23 17:12:20,123 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 3653 treesize of output 3309 [2021-11-23 17:12:20,165 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 3309 treesize of output 3277 [2021-11-23 17:12:20,198 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 3277 treesize of output 3253 [2021-11-23 17:12:20,233 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 3253 treesize of output 3189 [2021-11-23 17:12:20,261 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:12:20,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [760071827] [2021-11-23 17:12:20,262 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-23 17:12:20,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [809450542] [2021-11-23 17:12:20,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:12:20,263 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 17:12:20,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/cvc4 [2021-11-23 17:12:20,264 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 17:12:20,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-11-23 17:12:20,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:12:20,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 34 conjunts are in the unsatisfiable core [2021-11-23 17:12:20,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:12:20,730 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 6 treesize of output 5 [2021-11-23 17:12:20,846 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 17:12:20,847 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 29 [2021-11-23 17:12:20,872 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 17:12:21,004 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 17:12:21,025 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 17:12:21,442 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 17:12:21,443 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 58 [2021-11-23 17:12:21,452 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 0 case distinctions, treesize of input 22 treesize of output 24 [2021-11-23 17:12:21,699 INFO L354 Elim1Store]: treesize reduction 23, result has 47.7 percent of original size [2021-11-23 17:12:21,700 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 18 treesize of output 30 [2021-11-23 17:12:21,755 INFO L354 Elim1Store]: treesize reduction 8, result has 65.2 percent of original size [2021-11-23 17:12:21,755 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 32 treesize of output 34 [2021-11-23 17:12:21,983 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 38 treesize of output 36 [2021-11-23 17:12:22,007 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 16 treesize of output 18 [2021-11-23 17:12:22,226 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 17:12:22,227 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 57 [2021-11-23 17:12:22,235 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 22 treesize of output 24 [2021-11-23 17:12:22,425 INFO L354 Elim1Store]: treesize reduction 4, result has 71.4 percent of original size [2021-11-23 17:12:22,425 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 1 case distinctions, treesize of input 20 treesize of output 20 [2021-11-23 17:12:22,435 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 18 treesize of output 20 [2021-11-23 17:12:22,545 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-23 17:12:22,549 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 25 treesize of output 13 [2021-11-23 17:12:22,557 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:12:22,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 17:12:25,130 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-23 17:12:25,131 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 18 [2021-11-23 17:12:25,238 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~tmpList~0#1.base_32| (_ BitVec 32))) (or (= |c_ULTIMATE.start_main_#t~mem11#1.base| |v_ULTIMATE.start_main_~tmpList~0#1.base_32|) (and (forall ((v_ArrVal_658 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem11#1.base| v_ArrVal_658) |c_ULTIMATE.start_main_~tree~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|)))) (bvule .cse0 (bvadd (_ bv4 32) .cse0)))) (forall ((v_ArrVal_659 (_ BitVec 32)) (v_ArrVal_657 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_658 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem11#1.base| v_ArrVal_658) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse1)) (select (store |c_#length| |v_ULTIMATE.start_main_~tmpList~0#1.base_32| v_ArrVal_659) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem11#1.base| v_ArrVal_657) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse1)))))))) is different from false [2021-11-23 17:12:25,348 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~tmpList~0#1.base_32| (_ BitVec 32))) (or (and (forall ((v_ArrVal_659 (_ BitVec 32)) (v_ArrVal_657 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_658 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_658) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse1)) (select (store |c_#length| |v_ULTIMATE.start_main_~tmpList~0#1.base_32| v_ArrVal_659) (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_657) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse1)))))) (forall ((v_ArrVal_658 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base|) .cse3) v_ArrVal_658) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse3)))) (bvule .cse2 (bvadd (_ bv4 32) .cse2))))) (= (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|)) |v_ULTIMATE.start_main_~tmpList~0#1.base_32|))) is different from false [2021-11-23 17:12:25,624 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~tmpList~0#1.base_32| (_ BitVec 32)) (v_ArrVal_655 (Array (_ BitVec 32) (_ BitVec 32)))) (or (and (forall ((v_ArrVal_654 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_659 (_ BitVec 32)) (v_ArrVal_657 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_658 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tmpList~0#1.base| v_ArrVal_655)) (.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~tree~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~tmpList~0#1.base| v_ArrVal_654) .cse0 v_ArrVal_658) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse1) (_ bv4 32)) (select (store |c_#length| |v_ULTIMATE.start_main_~tmpList~0#1.base_32| v_ArrVal_659) (select (select (store .cse2 .cse0 v_ArrVal_657) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse1)))))) (forall ((v_ArrVal_654 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_658 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (let ((.cse4 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~tmpList~0#1.base| v_ArrVal_654) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tmpList~0#1.base| v_ArrVal_655) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse4) v_ArrVal_658) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse4)))) (bvule .cse3 (bvadd .cse3 (_ bv4 32)))))) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tmpList~0#1.base| v_ArrVal_655) |c_ULTIMATE.start_main_~tree~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|)) |v_ULTIMATE.start_main_~tmpList~0#1.base_32|))) is different from false [2021-11-23 17:12:26,182 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~tmpList~0#1.base_32| (_ BitVec 32)) (v_ArrVal_655 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~tmpList~0#1.base_33| (_ BitVec 32))) (or (and (forall ((v_ArrVal_654 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_658 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (select (select (store (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~tmpList~0#1.base_33| v_ArrVal_654) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~tmpList~0#1.base_33| v_ArrVal_655) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse1) v_ArrVal_658) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse1)))) (bvule .cse0 (bvadd (_ bv4 32) .cse0)))) (forall ((v_ArrVal_654 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_659 (_ BitVec 32)) (v_ArrVal_653 (_ BitVec 32)) (v_ArrVal_657 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_658 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~tmpList~0#1.base_33| v_ArrVal_655)) (.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (let ((.cse2 (select (select .cse4 |c_ULTIMATE.start_main_~tree~0#1.base|) .cse3))) (bvule (bvadd (_ bv4 32) (select (select (store (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~tmpList~0#1.base_33| v_ArrVal_654) .cse2 v_ArrVal_658) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse3)) (select (store (store |c_#length| |v_ULTIMATE.start_main_~tmpList~0#1.base_33| v_ArrVal_653) |v_ULTIMATE.start_main_~tmpList~0#1.base_32| v_ArrVal_659) (select (select (store .cse4 .cse2 v_ArrVal_657) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse3))))))) (= (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~tmpList~0#1.base_33| v_ArrVal_655) |c_ULTIMATE.start_main_~tree~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|)) |v_ULTIMATE.start_main_~tmpList~0#1.base_32|) (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~tmpList~0#1.base_33|)))))) is different from false [2021-11-23 17:12:26,889 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_651 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~tmpList~0#1.base_32| (_ BitVec 32)) (v_ArrVal_655 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~tmpList~0#1.base_33| (_ BitVec 32))) (or (and (forall ((v_ArrVal_652 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_654 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_659 (_ BitVec 32)) (v_ArrVal_653 (_ BitVec 32)) (v_ArrVal_657 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_658 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_651) |v_ULTIMATE.start_main_~tmpList~0#1.base_33| v_ArrVal_655)) (.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~tree~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_652) |v_ULTIMATE.start_main_~tmpList~0#1.base_33| v_ArrVal_654) .cse0 v_ArrVal_658) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse1) (_ bv4 32)) (select (store (store |c_#length| |v_ULTIMATE.start_main_~tmpList~0#1.base_33| v_ArrVal_653) |v_ULTIMATE.start_main_~tmpList~0#1.base_32| v_ArrVal_659) (select (select (store .cse2 .cse0 v_ArrVal_657) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse1)))))) (forall ((v_ArrVal_652 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_654 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_658 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (let ((.cse4 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_652) |v_ULTIMATE.start_main_~tmpList~0#1.base_33| v_ArrVal_654) (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_651) |v_ULTIMATE.start_main_~tmpList~0#1.base_33| v_ArrVal_655) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse4) v_ArrVal_658) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse4)))) (bvule .cse3 (bvadd .cse3 (_ bv4 32)))))) (= (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_651) |v_ULTIMATE.start_main_~tmpList~0#1.base_33| v_ArrVal_655) |c_ULTIMATE.start_main_~tree~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|)) |v_ULTIMATE.start_main_~tmpList~0#1.base_32|) (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~tmpList~0#1.base_33|)))))) is different from false [2021-11-23 17:12:28,126 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 17:12:28,126 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 207 treesize of output 188 [2021-11-23 17:12:28,163 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 17:12:28,163 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 213 treesize of output 163 [2021-11-23 17:12:28,167 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 17:12:28,171 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 763 treesize of output 637 [2021-11-23 17:12:28,178 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 17:12:28,186 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 3263 treesize of output 3089 [2021-11-23 17:12:28,229 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 3089 treesize of output 2861 [2021-11-23 17:12:28,274 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 2837 treesize of output 2645 [2021-11-23 17:12:28,312 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 2645 treesize of output 2453 [2021-11-23 17:12:28,338 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 2453 treesize of output 2357 [2021-11-23 17:12:28,365 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 2357 treesize of output 2325 [2021-11-23 17:12:28,394 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 2325 treesize of output 2309 [2021-11-23 17:13:04,195 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 17:13:10,658 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2021-11-23 17:13:10,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [809450542] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 17:13:10,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668031989] [2021-11-23 17:13:10,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:13:10,659 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 17:13:10,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:13:10,660 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 17:13:10,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-23 17:13:10,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:13:10,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-23 17:13:10,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:13:10,807 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 6 treesize of output 5 [2021-11-23 17:13:10,832 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 17:13:10,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2021-11-23 17:13:10,840 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 17:13:10,952 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 17:13:10,967 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 17:13:11,254 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 17:13:11,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 58 [2021-11-23 17:13:11,265 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 22 treesize of output 24 [2021-11-23 17:13:11,376 INFO L354 Elim1Store]: treesize reduction 23, result has 47.7 percent of original size [2021-11-23 17:13:11,376 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 18 treesize of output 30 [2021-11-23 17:13:11,430 INFO L354 Elim1Store]: treesize reduction 8, result has 65.2 percent of original size [2021-11-23 17:13:11,430 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 39 treesize of output 41 [2021-11-23 17:13:11,753 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 56 treesize of output 52 [2021-11-23 17:13:11,766 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 16 treesize of output 18 [2021-11-23 17:13:12,088 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 17:13:12,088 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 63 [2021-11-23 17:13:12,095 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 22 treesize of output 24 [2021-11-23 17:13:12,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:13:12,239 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 18 treesize of output 20 [2021-11-23 17:13:12,255 INFO L354 Elim1Store]: treesize reduction 4, result has 71.4 percent of original size [2021-11-23 17:13:12,255 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 1 case distinctions, treesize of input 29 treesize of output 29 [2021-11-23 17:13:12,272 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 31 treesize of output 13 [2021-11-23 17:13:12,287 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 19 treesize of output 7 [2021-11-23 17:13:12,296 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:13:12,296 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 17:13:21,630 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~tmpList~0#1.base_32| (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~tmpList~0#1.base_32|))))))) (and (forall ((v_ArrVal_714 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_716 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_713 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~tmpList~0#1.base| v_ArrVal_713) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tmpList~0#1.base| v_ArrVal_714) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse1) v_ArrVal_716) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse1)))) (bvule .cse0 (bvadd .cse0 (_ bv4 32))))) (forall ((v_ArrVal_659 (_ BitVec 32)) (v_ArrVal_714 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_715 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_716 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_713 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tmpList~0#1.base| v_ArrVal_714)) (.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (let ((.cse2 (select (select .cse4 |c_ULTIMATE.start_main_~tree~0#1.base|) .cse3))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~tmpList~0#1.base| v_ArrVal_713) .cse2 v_ArrVal_716) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse3) (_ bv4 32)) (select (store |c_#length| |v_ULTIMATE.start_main_~tmpList~0#1.base_32| v_ArrVal_659) (select (select (store .cse4 .cse2 v_ArrVal_715) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse3))))))))) is different from false [2021-11-23 17:13:21,661 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-23 17:13:21,661 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2021-11-23 17:13:21,773 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~tmpList~0#1.base_32| (_ BitVec 32))) (or (= |c_ULTIMATE.start_main_#t~mem9#1.base| |v_ULTIMATE.start_main_~tmpList~0#1.base_32|) (and (forall ((v_ArrVal_714 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_716 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_713 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~tmpList~0#1.base| v_ArrVal_713) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tmpList~0#1.base| v_ArrVal_714) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse1) v_ArrVal_716) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse1)))) (bvule .cse0 (bvadd .cse0 (_ bv4 32))))) (forall ((v_ArrVal_659 (_ BitVec 32)) (v_ArrVal_714 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_715 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_716 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_713 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tmpList~0#1.base| v_ArrVal_714)) (.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (let ((.cse2 (select (select .cse4 |c_ULTIMATE.start_main_~tree~0#1.base|) .cse3))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~tmpList~0#1.base| v_ArrVal_713) .cse2 v_ArrVal_716) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse3) (_ bv4 32)) (select (store |c_#length| |v_ULTIMATE.start_main_~tmpList~0#1.base_32| v_ArrVal_659) (select (select (store .cse4 .cse2 v_ArrVal_715) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse3))))))))) is different from false [2021-11-23 17:13:21,884 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~tmpList~0#1.base_32| (_ BitVec 32))) (or (= (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|)) |v_ULTIMATE.start_main_~tmpList~0#1.base_32|) (and (forall ((v_ArrVal_714 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_716 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_713 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~tmpList~0#1.base| v_ArrVal_713) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tmpList~0#1.base| v_ArrVal_714) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse1) v_ArrVal_716) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse1)))) (bvule .cse0 (bvadd .cse0 (_ bv4 32))))) (forall ((v_ArrVal_659 (_ BitVec 32)) (v_ArrVal_714 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_715 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_716 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_713 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tmpList~0#1.base| v_ArrVal_714)) (.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (let ((.cse2 (select (select .cse4 |c_ULTIMATE.start_main_~tree~0#1.base|) .cse3))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~tmpList~0#1.base| v_ArrVal_713) .cse2 v_ArrVal_716) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse3) (_ bv4 32)) (select (store |c_#length| |v_ULTIMATE.start_main_~tmpList~0#1.base_32| v_ArrVal_659) (select (select (store .cse4 .cse2 v_ArrVal_715) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse3))))))))) is different from false [2021-11-23 17:13:22,513 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~tmpList~0#1.base_32| (_ BitVec 32)) (|v_ULTIMATE.start_main_~tmpList~0#1.base_36| (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~tmpList~0#1.base_36|))) (= (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|)) |v_ULTIMATE.start_main_~tmpList~0#1.base_32|) (and (forall ((v_ArrVal_714 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_716 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_713 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (select (select (store (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~tmpList~0#1.base_36| v_ArrVal_713) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~tmpList~0#1.base_36| v_ArrVal_714) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse1) v_ArrVal_716) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse1)))) (bvule .cse0 (bvadd (_ bv4 32) .cse0)))) (forall ((v_ArrVal_659 (_ BitVec 32)) (v_ArrVal_712 (_ BitVec 32)) (v_ArrVal_714 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_715 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_716 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_713 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~tmpList~0#1.base_36| v_ArrVal_714)) (.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (let ((.cse2 (select (select .cse4 |c_ULTIMATE.start_main_~tree~0#1.base|) .cse3))) (bvule (bvadd (_ bv4 32) (select (select (store (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~tmpList~0#1.base_36| v_ArrVal_713) .cse2 v_ArrVal_716) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse3)) (select (store (store |c_#length| |v_ULTIMATE.start_main_~tmpList~0#1.base_36| v_ArrVal_712) |v_ULTIMATE.start_main_~tmpList~0#1.base_32| v_ArrVal_659) (select (select (store .cse4 .cse2 v_ArrVal_715) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse3))))))))) is different from false [2021-11-23 17:13:25,646 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 17:13:25,647 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 207 treesize of output 188 [2021-11-23 17:13:25,673 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 17:13:25,673 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 210 treesize of output 160 [2021-11-23 17:13:25,680 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 17:13:25,685 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 1035 treesize of output 903 [2021-11-23 17:13:25,699 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 17:13:25,714 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 4421 treesize of output 4199 [2021-11-23 17:13:25,791 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 4199 treesize of output 3835 [2021-11-23 17:13:25,866 INFO L354 Elim1Store]: treesize reduction 18, result has 28.0 percent of original size [2021-11-23 17:13:25,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 32 [2021-11-23 17:13:25,984 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 3757 treesize of output 3501 [2021-11-23 17:13:26,022 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 3501 treesize of output 3245 [2021-11-23 17:13:26,059 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 3245 treesize of output 3117 [2021-11-23 17:13:26,096 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 3117 treesize of output 3085 [2021-11-23 17:13:26,134 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 3085 treesize of output 3069 [2021-11-23 17:13:26,185 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-23 17:13:26,185 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 17:13:26,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 22 [2021-11-23 17:13:26,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046280367] [2021-11-23 17:13:26,186 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 17:13:26,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-23 17:13:26,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:13:26,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-23 17:13:26,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=270, Invalid=1157, Unknown=35, NotChecked=1190, Total=2652 [2021-11-23 17:13:26,190 INFO L87 Difference]: Start difference. First operand 380 states and 555 transitions. Second operand has 23 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 23 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) [2021-11-23 17:13:32,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:13:32,795 INFO L93 Difference]: Finished difference Result 704 states and 999 transitions. [2021-11-23 17:13:32,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-23 17:13:32,811 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 23 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) Word has length 22 [2021-11-23 17:13:32,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:13:32,816 INFO L225 Difference]: With dead ends: 704 [2021-11-23 17:13:32,817 INFO L226 Difference]: Without dead ends: 704 [2021-11-23 17:13:32,818 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 58 SyntacticMatches, 16 SemanticMatches, 54 ConstructedPredicates, 14 IntricatePredicates, 1 DeprecatedPredicates, 839 ImplicationChecksByTransitivity, 23.9s TimeCoverageRelationStatistics Valid=363, Invalid=1380, Unknown=35, NotChecked=1302, Total=3080 [2021-11-23 17:13:32,819 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 285 mSDsluCounter, 1369 mSDsCounter, 0 mSdLazyCounter, 1260 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 1514 SdHoareTripleChecker+Invalid, 3662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2374 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2021-11-23 17:13:32,819 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [285 Valid, 1514 Invalid, 3662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1260 Invalid, 0 Unknown, 2374 Unchecked, 5.2s Time] [2021-11-23 17:13:32,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2021-11-23 17:13:32,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 379. [2021-11-23 17:13:32,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 318 states have (on average 1.7421383647798743) internal successors, (554), 378 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:13:32,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 554 transitions. [2021-11-23 17:13:32,836 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 554 transitions. Word has length 22 [2021-11-23 17:13:32,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:13:32,836 INFO L470 AbstractCegarLoop]: Abstraction has 379 states and 554 transitions. [2021-11-23 17:13:32,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 23 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) [2021-11-23 17:13:32,837 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 554 transitions. [2021-11-23 17:13:32,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-23 17:13:32,843 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:13:32,844 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:13:32,864 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-23 17:13:33,084 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-23 17:13:33,262 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (20)] Ended with exit code 0 [2021-11-23 17:13:33,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt [2021-11-23 17:13:33,460 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 100 more)] === [2021-11-23 17:13:33,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:13:33,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1366383817, now seen corresponding path program 1 times [2021-11-23 17:13:33,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:13:33,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1897158710] [2021-11-23 17:13:33,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:13:33,461 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:13:33,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:13:33,464 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:13:33,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-23 17:13:33,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:13:33,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 17:13:33,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:13:33,648 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:13:33,648 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:13:33,649 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:13:33,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1897158710] [2021-11-23 17:13:33,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1897158710] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:13:33,649 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:13:33,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 17:13:33,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310099743] [2021-11-23 17:13:33,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:13:33,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 17:13:33,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:13:33,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 17:13:33,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 17:13:33,652 INFO L87 Difference]: Start difference. First operand 379 states and 554 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:13:33,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:13:33,668 INFO L93 Difference]: Finished difference Result 385 states and 560 transitions. [2021-11-23 17:13:33,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 17:13:33,669 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-11-23 17:13:33,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:13:33,672 INFO L225 Difference]: With dead ends: 385 [2021-11-23 17:13:33,673 INFO L226 Difference]: Without dead ends: 385 [2021-11-23 17:13:33,673 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 17:13:33,674 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 0 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 17:13:33,675 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 336 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 17:13:33,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2021-11-23 17:13:33,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 385. [2021-11-23 17:13:33,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 324 states have (on average 1.728395061728395) internal successors, (560), 384 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:13:33,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 560 transitions. [2021-11-23 17:13:33,688 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 560 transitions. Word has length 22 [2021-11-23 17:13:33,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:13:33,688 INFO L470 AbstractCegarLoop]: Abstraction has 385 states and 560 transitions. [2021-11-23 17:13:33,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:13:33,689 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 560 transitions. [2021-11-23 17:13:33,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-23 17:13:33,690 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:13:33,690 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:13:33,708 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-23 17:13:33,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:13:33,904 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 100 more)] === [2021-11-23 17:13:33,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:13:33,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1198957394, now seen corresponding path program 1 times [2021-11-23 17:13:33,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:13:33,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [430995648] [2021-11-23 17:13:33,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:13:33,905 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:13:33,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:13:33,906 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:13:33,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-23 17:13:34,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:13:34,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 17:13:34,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:13:34,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:13:34,110 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:13:34,110 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:13:34,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [430995648] [2021-11-23 17:13:34,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [430995648] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:13:34,110 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:13:34,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 17:13:34,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665458647] [2021-11-23 17:13:34,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:13:34,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 17:13:34,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:13:34,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 17:13:34,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 17:13:34,112 INFO L87 Difference]: Start difference. First operand 385 states and 560 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:13:34,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:13:34,176 INFO L93 Difference]: Finished difference Result 420 states and 576 transitions. [2021-11-23 17:13:34,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 17:13:34,184 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-23 17:13:34,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:13:34,188 INFO L225 Difference]: With dead ends: 420 [2021-11-23 17:13:34,189 INFO L226 Difference]: Without dead ends: 420 [2021-11-23 17:13:34,189 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 17:13:34,190 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 52 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 17:13:34,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 336 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 17:13:34,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2021-11-23 17:13:34,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 368. [2021-11-23 17:13:34,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 307 states have (on average 1.710097719869707) internal successors, (525), 367 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:13:34,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 525 transitions. [2021-11-23 17:13:34,204 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 525 transitions. Word has length 23 [2021-11-23 17:13:34,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:13:34,206 INFO L470 AbstractCegarLoop]: Abstraction has 368 states and 525 transitions. [2021-11-23 17:13:34,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:13:34,206 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 525 transitions. [2021-11-23 17:13:34,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-23 17:13:34,208 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:13:34,208 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:13:34,226 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-23 17:13:34,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:13:34,422 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 100 more)] === [2021-11-23 17:13:34,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:13:34,423 INFO L85 PathProgramCache]: Analyzing trace with hash -634715490, now seen corresponding path program 1 times [2021-11-23 17:13:34,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:13:34,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1300894996] [2021-11-23 17:13:34,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:13:34,423 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:13:34,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:13:34,424 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:13:34,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-23 17:13:34,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:13:34,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 17:13:34,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:13:34,590 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 17:13:34,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:13:34,602 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:13:34,603 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:13:34,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1300894996] [2021-11-23 17:13:34,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1300894996] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:13:34,603 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:13:34,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 17:13:34,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933242448] [2021-11-23 17:13:34,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:13:34,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 17:13:34,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:13:34,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 17:13:34,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 17:13:34,605 INFO L87 Difference]: Start difference. First operand 368 states and 525 transitions. Second operand has 3 states, 2 states have (on average 11.5) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:13:35,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:13:35,109 INFO L93 Difference]: Finished difference Result 596 states and 851 transitions. [2021-11-23 17:13:35,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 17:13:35,110 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 11.5) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-23 17:13:35,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:13:35,114 INFO L225 Difference]: With dead ends: 596 [2021-11-23 17:13:35,114 INFO L226 Difference]: Without dead ends: 596 [2021-11-23 17:13:35,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 17:13:35,116 INFO L933 BasicCegarLoop]: 208 mSDtfsCounter, 125 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 17:13:35,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 285 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-23 17:13:35,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2021-11-23 17:13:35,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 363. [2021-11-23 17:13:35,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 307 states have (on average 1.6775244299674268) internal successors, (515), 362 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:13:35,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 515 transitions. [2021-11-23 17:13:35,129 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 515 transitions. Word has length 23 [2021-11-23 17:13:35,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:13:35,130 INFO L470 AbstractCegarLoop]: Abstraction has 363 states and 515 transitions. [2021-11-23 17:13:35,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 11.5) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:13:35,130 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 515 transitions. [2021-11-23 17:13:35,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-23 17:13:35,131 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:13:35,131 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:13:35,163 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (24)] Ended with exit code 0 [2021-11-23 17:13:35,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:13:35,374 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr39REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 100 more)] === [2021-11-23 17:13:35,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:13:35,376 INFO L85 PathProgramCache]: Analyzing trace with hash -634715489, now seen corresponding path program 1 times [2021-11-23 17:13:35,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:13:35,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1564179648] [2021-11-23 17:13:35,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:13:35,377 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:13:35,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:13:35,379 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:13:35,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-23 17:13:35,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:13:35,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 17:13:35,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:13:35,606 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 6 treesize of output 5 [2021-11-23 17:13:35,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:13:35,637 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:13:35,638 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:13:35,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1564179648] [2021-11-23 17:13:35,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1564179648] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:13:35,638 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:13:35,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 17:13:35,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014506505] [2021-11-23 17:13:35,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:13:35,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 17:13:35,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:13:35,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 17:13:35,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 17:13:35,640 INFO L87 Difference]: Start difference. First operand 363 states and 515 transitions. Second operand has 3 states, 2 states have (on average 11.5) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:13:36,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:13:36,147 INFO L93 Difference]: Finished difference Result 361 states and 511 transitions. [2021-11-23 17:13:36,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 17:13:36,148 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 11.5) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-23 17:13:36,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:13:36,150 INFO L225 Difference]: With dead ends: 361 [2021-11-23 17:13:36,150 INFO L226 Difference]: Without dead ends: 361 [2021-11-23 17:13:36,150 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 17:13:36,151 INFO L933 BasicCegarLoop]: 158 mSDtfsCounter, 5 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 17:13:36,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 235 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-23 17:13:36,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2021-11-23 17:13:36,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 361. [2021-11-23 17:13:36,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 307 states have (on average 1.6644951140065147) internal successors, (511), 360 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:13:36,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 511 transitions. [2021-11-23 17:13:36,163 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 511 transitions. Word has length 23 [2021-11-23 17:13:36,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:13:36,164 INFO L470 AbstractCegarLoop]: Abstraction has 361 states and 511 transitions. [2021-11-23 17:13:36,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 11.5) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:13:36,164 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 511 transitions. [2021-11-23 17:13:36,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-23 17:13:36,165 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:13:36,165 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:13:36,199 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (25)] Ended with exit code 0 [2021-11-23 17:13:36,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:13:36,399 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 100 more)] === [2021-11-23 17:13:36,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:13:36,399 INFO L85 PathProgramCache]: Analyzing trace with hash -23631227, now seen corresponding path program 1 times [2021-11-23 17:13:36,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:13:36,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1459024054] [2021-11-23 17:13:36,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:13:36,400 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:13:36,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:13:36,402 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:13:36,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-23 17:13:36,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:13:36,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-23 17:13:36,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:13:36,628 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 6 treesize of output 5 [2021-11-23 17:13:36,669 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-23 17:13:36,685 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-23 17:13:36,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:13:36,737 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-23 17:13:36,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:13:36,758 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-23 17:13:36,799 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 17:13:36,799 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2021-11-23 17:13:36,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:13:36,861 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 21 treesize of output 20 [2021-11-23 17:13:36,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:13:36,878 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 21 treesize of output 20 [2021-11-23 17:13:37,048 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 17:13:37,048 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2021-11-23 17:13:37,055 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 20 treesize of output 22 [2021-11-23 17:13:37,197 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 11 [2021-11-23 17:13:37,202 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-23 17:13:37,280 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:13:37,281 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:13:37,281 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:13:37,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1459024054] [2021-11-23 17:13:37,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1459024054] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:13:37,281 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:13:37,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-23 17:13:37,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991524919] [2021-11-23 17:13:37,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:13:37,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 17:13:37,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:13:37,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 17:13:37,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-23 17:13:37,282 INFO L87 Difference]: Start difference. First operand 361 states and 511 transitions. Second operand has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:13:40,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:13:40,469 INFO L93 Difference]: Finished difference Result 647 states and 865 transitions. [2021-11-23 17:13:40,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-23 17:13:40,470 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-23 17:13:40,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:13:40,473 INFO L225 Difference]: With dead ends: 647 [2021-11-23 17:13:40,474 INFO L226 Difference]: Without dead ends: 647 [2021-11-23 17:13:40,474 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2021-11-23 17:13:40,475 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 443 mSDsluCounter, 829 mSDsCounter, 0 mSdLazyCounter, 852 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 948 SdHoareTripleChecker+Invalid, 892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-11-23 17:13:40,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [443 Valid, 948 Invalid, 892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 852 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-11-23 17:13:40,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2021-11-23 17:13:40,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 399. [2021-11-23 17:13:40,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 345 states have (on average 1.6434782608695653) internal successors, (567), 398 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:13:40,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 567 transitions. [2021-11-23 17:13:40,489 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 567 transitions. Word has length 24 [2021-11-23 17:13:40,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:13:40,489 INFO L470 AbstractCegarLoop]: Abstraction has 399 states and 567 transitions. [2021-11-23 17:13:40,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:13:40,490 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 567 transitions. [2021-11-23 17:13:40,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-23 17:13:40,491 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:13:40,491 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:13:40,510 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-11-23 17:13:40,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:13:40,705 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 100 more)] === [2021-11-23 17:13:40,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:13:40,705 INFO L85 PathProgramCache]: Analyzing trace with hash -228421332, now seen corresponding path program 1 times [2021-11-23 17:13:40,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:13:40,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [211164589] [2021-11-23 17:13:40,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:13:40,705 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:13:40,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:13:40,706 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:13:40,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-11-23 17:13:40,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:13:40,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-23 17:13:40,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:13:40,903 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 17:13:40,940 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-23 17:13:40,951 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-23 17:13:41,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:13:41,009 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-23 17:13:41,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:13:41,023 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 21 treesize of output 20 [2021-11-23 17:13:41,088 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 17:13:41,088 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 16 [2021-11-23 17:13:41,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:13:41,153 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 21 treesize of output 20 [2021-11-23 17:13:41,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:13:41,167 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 21 treesize of output 20 [2021-11-23 17:13:41,353 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 17:13:41,354 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2021-11-23 17:13:41,361 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2021-11-23 17:13:41,499 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 11 [2021-11-23 17:13:41,505 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-23 17:13:41,586 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:13:41,586 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:13:41,586 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:13:41,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [211164589] [2021-11-23 17:13:41,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [211164589] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:13:41,586 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:13:41,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-23 17:13:41,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679584555] [2021-11-23 17:13:41,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:13:41,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 17:13:41,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:13:41,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 17:13:41,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-23 17:13:41,589 INFO L87 Difference]: Start difference. First operand 399 states and 567 transitions. Second operand has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:13:44,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:13:44,814 INFO L93 Difference]: Finished difference Result 611 states and 821 transitions. [2021-11-23 17:13:44,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-23 17:13:44,815 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-23 17:13:44,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:13:44,818 INFO L225 Difference]: With dead ends: 611 [2021-11-23 17:13:44,818 INFO L226 Difference]: Without dead ends: 611 [2021-11-23 17:13:44,818 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2021-11-23 17:13:44,819 INFO L933 BasicCegarLoop]: 118 mSDtfsCounter, 430 mSDsluCounter, 788 mSDsCounter, 0 mSdLazyCounter, 816 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 430 SdHoareTripleChecker+Valid, 906 SdHoareTripleChecker+Invalid, 862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 816 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-11-23 17:13:44,820 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [430 Valid, 906 Invalid, 862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 816 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-11-23 17:13:44,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2021-11-23 17:13:44,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 376. [2021-11-23 17:13:44,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 322 states have (on average 1.6428571428571428) internal successors, (529), 375 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:13:44,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 529 transitions. [2021-11-23 17:13:44,832 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 529 transitions. Word has length 24 [2021-11-23 17:13:44,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:13:44,833 INFO L470 AbstractCegarLoop]: Abstraction has 376 states and 529 transitions. [2021-11-23 17:13:44,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:13:44,833 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 529 transitions. [2021-11-23 17:13:44,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-23 17:13:44,834 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:13:44,834 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:13:44,846 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-11-23 17:13:45,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:13:45,043 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr103ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 100 more)] === [2021-11-23 17:13:45,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:13:45,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1998804780, now seen corresponding path program 1 times [2021-11-23 17:13:45,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:13:45,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [82288994] [2021-11-23 17:13:45,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:13:45,044 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:13:45,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:13:45,045 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:13:45,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-11-23 17:13:45,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:13:45,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 17:13:45,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:13:45,288 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 17:13:45,288 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:13:45,289 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:13:45,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [82288994] [2021-11-23 17:13:45,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [82288994] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:13:45,289 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:13:45,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 17:13:45,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306252699] [2021-11-23 17:13:45,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:13:45,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 17:13:45,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:13:45,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 17:13:45,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 17:13:45,290 INFO L87 Difference]: Start difference. First operand 376 states and 529 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 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) [2021-11-23 17:13:45,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:13:45,356 INFO L93 Difference]: Finished difference Result 458 states and 620 transitions. [2021-11-23 17:13:45,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 17:13:45,363 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 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) Word has length 25 [2021-11-23 17:13:45,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:13:45,366 INFO L225 Difference]: With dead ends: 458 [2021-11-23 17:13:45,367 INFO L226 Difference]: Without dead ends: 458 [2021-11-23 17:13:45,367 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 17:13:45,368 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 139 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 17:13:45,369 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 278 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 17:13:45,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2021-11-23 17:13:45,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 345. [2021-11-23 17:13:45,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 291 states have (on average 1.70446735395189) internal successors, (496), 344 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:13:45,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 496 transitions. [2021-11-23 17:13:45,379 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 496 transitions. Word has length 25 [2021-11-23 17:13:45,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:13:45,379 INFO L470 AbstractCegarLoop]: Abstraction has 345 states and 496 transitions. [2021-11-23 17:13:45,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 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) [2021-11-23 17:13:45,380 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 496 transitions. [2021-11-23 17:13:45,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-23 17:13:45,381 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:13:45,381 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:13:45,395 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (28)] Ended with exit code 0 [2021-11-23 17:13:45,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:13:45,595 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 100 more)] === [2021-11-23 17:13:45,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:13:45,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1146286443, now seen corresponding path program 1 times [2021-11-23 17:13:45,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:13:45,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [931660181] [2021-11-23 17:13:45,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:13:45,596 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:13:45,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:13:45,598 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:13:45,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-11-23 17:13:45,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:13:45,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-23 17:13:45,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:13:45,794 INFO L354 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2021-11-23 17:13:45,794 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 21 [2021-11-23 17:13:45,937 INFO L354 Elim1Store]: treesize reduction 38, result has 39.7 percent of original size [2021-11-23 17:13:45,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 31 treesize of output 48 [2021-11-23 17:13:46,076 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 17:13:46,611 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 17:13:46,611 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 56 [2021-11-23 17:13:48,147 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 56 treesize of output 32 [2021-11-23 17:13:48,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:13:48,412 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:13:48,412 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:13:48,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [931660181] [2021-11-23 17:13:48,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [931660181] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:13:48,413 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:13:48,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 17:13:48,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54970383] [2021-11-23 17:13:48,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:13:48,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 17:13:48,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:13:48,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 17:13:48,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-23 17:13:48,415 INFO L87 Difference]: Start difference. First operand 345 states and 496 transitions. Second operand has 9 states, 8 states have (on average 3.125) internal successors, (25), 8 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) [2021-11-23 17:13:49,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:13:49,003 INFO L93 Difference]: Finished difference Result 357 states and 511 transitions. [2021-11-23 17:13:49,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 17:13:49,004 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 8 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) Word has length 25 [2021-11-23 17:13:49,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:13:49,005 INFO L225 Difference]: With dead ends: 357 [2021-11-23 17:13:49,005 INFO L226 Difference]: Without dead ends: 357 [2021-11-23 17:13:49,006 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-11-23 17:13:49,006 INFO L933 BasicCegarLoop]: 147 mSDtfsCounter, 2 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 634 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 308 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 17:13:49,007 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 634 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 125 Invalid, 0 Unknown, 308 Unchecked, 0.5s Time] [2021-11-23 17:13:49,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2021-11-23 17:13:49,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 357. [2021-11-23 17:13:49,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 303 states have (on average 1.6864686468646866) internal successors, (511), 356 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:13:49,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 511 transitions. [2021-11-23 17:13:49,015 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 511 transitions. Word has length 25 [2021-11-23 17:13:49,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:13:49,015 INFO L470 AbstractCegarLoop]: Abstraction has 357 states and 511 transitions. [2021-11-23 17:13:49,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 8 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) [2021-11-23 17:13:49,016 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 511 transitions. [2021-11-23 17:13:49,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-23 17:13:49,017 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:13:49,017 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:13:49,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-11-23 17:13:49,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:13:49,230 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 100 more)] === [2021-11-23 17:13:49,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:13:49,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1146286442, now seen corresponding path program 1 times [2021-11-23 17:13:49,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:13:49,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [531800136] [2021-11-23 17:13:49,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:13:49,231 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:13:49,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:13:49,232 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:13:49,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-11-23 17:13:49,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:13:49,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-23 17:13:49,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:13:49,389 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 6 treesize of output 5 [2021-11-23 17:13:49,434 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 6 treesize of output 5 [2021-11-23 17:13:49,463 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 17:13:49,463 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 18 treesize of output 18 [2021-11-23 17:13:49,507 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 17:13:49,520 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 17:13:49,708 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 17:13:49,708 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2021-11-23 17:13:49,718 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 22 treesize of output 24 [2021-11-23 17:13:50,023 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-23 17:13:50,027 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 25 treesize of output 13 [2021-11-23 17:13:50,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:13:50,062 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:13:50,062 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:13:50,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [531800136] [2021-11-23 17:13:50,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [531800136] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:13:50,063 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:13:50,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 17:13:50,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077061543] [2021-11-23 17:13:50,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:13:50,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 17:13:50,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:13:50,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 17:13:50,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-23 17:13:50,064 INFO L87 Difference]: Start difference. First operand 357 states and 511 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 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) [2021-11-23 17:13:52,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:13:52,530 INFO L93 Difference]: Finished difference Result 549 states and 758 transitions. [2021-11-23 17:13:52,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-23 17:13:52,531 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 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) Word has length 25 [2021-11-23 17:13:52,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:13:52,534 INFO L225 Difference]: With dead ends: 549 [2021-11-23 17:13:52,534 INFO L226 Difference]: Without dead ends: 549 [2021-11-23 17:13:52,534 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-11-23 17:13:52,534 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 297 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 712 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-23 17:13:52,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [297 Valid, 461 Invalid, 728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 712 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-23 17:13:52,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2021-11-23 17:13:52,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 364. [2021-11-23 17:13:52,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 310 states have (on average 1.6741935483870967) internal successors, (519), 363 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:13:52,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 519 transitions. [2021-11-23 17:13:52,544 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 519 transitions. Word has length 25 [2021-11-23 17:13:52,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:13:52,545 INFO L470 AbstractCegarLoop]: Abstraction has 364 states and 519 transitions. [2021-11-23 17:13:52,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 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) [2021-11-23 17:13:52,545 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 519 transitions. [2021-11-23 17:13:52,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-23 17:13:52,546 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:13:52,546 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:13:52,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-11-23 17:13:52,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:13:52,760 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 100 more)] === [2021-11-23 17:13:52,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:13:52,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1341269417, now seen corresponding path program 1 times [2021-11-23 17:13:52,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:13:52,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [827589642] [2021-11-23 17:13:52,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:13:52,761 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:13:52,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:13:52,761 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:13:52,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-11-23 17:13:53,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:13:53,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 17:13:53,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:13:53,076 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 17:13:53,077 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2021-11-23 17:13:53,215 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 26 treesize of output 28 [2021-11-23 17:13:53,220 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 43 treesize of output 41 [2021-11-23 17:13:53,297 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 29 treesize of output 17 [2021-11-23 17:13:53,302 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 40 treesize of output 16 [2021-11-23 17:13:53,365 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:13:53,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 17:13:53,443 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1096 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~tmpList~0#1.base| v_ArrVal_1096) |c_ULTIMATE.start_main_~tree~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|)))) (bvule .cse0 (bvadd (_ bv4 32) .cse0)))) (forall ((v_ArrVal_1096 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1095 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~tmpList~0#1.base| v_ArrVal_1096) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tmpList~0#1.base| v_ArrVal_1095) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse1)))))) is different from false [2021-11-23 17:13:53,499 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 17:13:53,499 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 58 treesize of output 62 [2021-11-23 17:13:54,263 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 124 treesize of output 82 [2021-11-23 17:13:54,267 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 86 treesize of output 80 [2021-11-23 17:13:54,272 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 65 [2021-11-23 17:13:54,277 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 65 treesize of output 61 [2021-11-23 17:13:54,282 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 61 treesize of output 53 [2021-11-23 17:13:54,350 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-11-23 17:13:54,350 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:13:54,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [827589642] [2021-11-23 17:13:54,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [827589642] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 17:13:54,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1991757665] [2021-11-23 17:13:54,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:13:54,350 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 17:13:54,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/cvc4 [2021-11-23 17:13:54,351 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 17:13:54,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process [2021-11-23 17:13:54,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:13:54,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 38 conjunts are in the unsatisfiable core [2021-11-23 17:13:54,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:13:54,775 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 17:13:54,875 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 17:13:54,875 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 21 treesize of output 28 [2021-11-23 17:13:54,894 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 6 treesize of output 5 [2021-11-23 17:13:54,987 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 17:13:54,995 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 17:13:55,388 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 17:13:55,388 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 62 [2021-11-23 17:13:55,397 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 22 treesize of output 24 [2021-11-23 17:13:55,579 INFO L354 Elim1Store]: treesize reduction 8, result has 65.2 percent of original size [2021-11-23 17:13:55,579 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 35 treesize of output 37 [2021-11-23 17:13:55,615 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 18 treesize of output 20 [2021-11-23 17:13:55,781 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 38 treesize of output 36 [2021-11-23 17:13:55,812 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 16 treesize of output 18 [2021-11-23 17:13:56,022 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 17:13:56,023 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 57 [2021-11-23 17:13:56,032 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 22 treesize of output 24 [2021-11-23 17:13:56,165 INFO L354 Elim1Store]: treesize reduction 8, result has 65.2 percent of original size [2021-11-23 17:13:56,165 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 35 treesize of output 37 [2021-11-23 17:13:56,197 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 18 treesize of output 20 [2021-11-23 17:13:56,281 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 38 treesize of output 36 [2021-11-23 17:13:56,290 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 16 treesize of output 18 [2021-11-23 17:13:56,383 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-23 17:13:56,386 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 25 treesize of output 13 [2021-11-23 17:13:56,442 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-23 17:13:56,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 17:13:56,516 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1164 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~tmpList~0#1.base| v_ArrVal_1164) |c_ULTIMATE.start_main_~tree~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|)))) (bvule .cse0 (bvadd .cse0 (_ bv4 32))))) (forall ((v_ArrVal_1163 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1164 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~tmpList~0#1.base| v_ArrVal_1164) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse1) (_ bv4 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tmpList~0#1.base| v_ArrVal_1163) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse1)))))) is different from false [2021-11-23 17:13:56,665 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~tmpList~0#1.base_38| (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~tmpList~0#1.base_38|))) (and (forall ((v_ArrVal_1163 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1164 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1162 (_ BitVec 32))) (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~tmpList~0#1.base_38| v_ArrVal_1164) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse0)) (select (store |c_#length| |v_ULTIMATE.start_main_~tmpList~0#1.base_38| v_ArrVal_1162) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~tmpList~0#1.base_38| v_ArrVal_1163) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse0))))) (forall ((v_ArrVal_1164 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~tmpList~0#1.base_38| v_ArrVal_1164) |c_ULTIMATE.start_main_~tree~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|)))) (bvule .cse1 (bvadd (_ bv4 32) .cse1))))))) is different from false [2021-11-23 17:13:57,022 INFO L354 Elim1Store]: treesize reduction 24, result has 35.1 percent of original size [2021-11-23 17:13:57,023 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 31 [2021-11-23 17:13:57,180 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~tmpList~0#1.base_38| (_ BitVec 32))) (or (and (forall ((v_ArrVal_1163 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1160 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1164 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1159 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1162 (_ BitVec 32))) (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_1160) |v_ULTIMATE.start_main_~tmpList~0#1.base_38| v_ArrVal_1164) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse1)) (select (store |c_#length| |v_ULTIMATE.start_main_~tmpList~0#1.base_38| v_ArrVal_1162) (select (select (store (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_1159) |v_ULTIMATE.start_main_~tmpList~0#1.base_38| v_ArrVal_1163) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse1)))))) (forall ((v_ArrVal_1160 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1164 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (select (select (store (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base|) .cse3) v_ArrVal_1160) |v_ULTIMATE.start_main_~tmpList~0#1.base_38| v_ArrVal_1164) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse3)))) (bvule .cse2 (bvadd (_ bv4 32) .cse2))))) (= |c_ULTIMATE.start_main_~tree~0#1.base| |v_ULTIMATE.start_main_~tmpList~0#1.base_38|) (= (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|)) |v_ULTIMATE.start_main_~tmpList~0#1.base_38|))) is different from false [2021-11-23 17:13:57,862 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~tmpList~0#1.base_38| (_ BitVec 32)) (v_ArrVal_1157 (Array (_ BitVec 32) (_ BitVec 32)))) (or (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tmpList~0#1.base| v_ArrVal_1157) |c_ULTIMATE.start_main_~tree~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|)) |v_ULTIMATE.start_main_~tmpList~0#1.base_38|) (= |c_ULTIMATE.start_main_~tree~0#1.base| |v_ULTIMATE.start_main_~tmpList~0#1.base_38|) (and (forall ((v_ArrVal_1163 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1160 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1164 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1159 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1158 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1162 (_ BitVec 32))) (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tmpList~0#1.base| v_ArrVal_1157)) (.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~tree~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~tmpList~0#1.base| v_ArrVal_1158) .cse0 v_ArrVal_1160) |v_ULTIMATE.start_main_~tmpList~0#1.base_38| v_ArrVal_1164) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse1)) (select (store |c_#length| |v_ULTIMATE.start_main_~tmpList~0#1.base_38| v_ArrVal_1162) (select (select (store (store .cse2 .cse0 v_ArrVal_1159) |v_ULTIMATE.start_main_~tmpList~0#1.base_38| v_ArrVal_1163) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse1)))))) (forall ((v_ArrVal_1160 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1164 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1158 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (let ((.cse4 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~tmpList~0#1.base| v_ArrVal_1158) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tmpList~0#1.base| v_ArrVal_1157) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse4) v_ArrVal_1160) |v_ULTIMATE.start_main_~tmpList~0#1.base_38| v_ArrVal_1164) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse4)))) (bvule .cse3 (bvadd (_ bv4 32) .cse3))))))) is different from false [2021-11-23 17:14:00,151 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~tmpList~0#1.base_39| (_ BitVec 32)) (|v_ULTIMATE.start_main_~tmpList~0#1.base_38| (_ BitVec 32)) (v_ArrVal_1157 (Array (_ BitVec 32) (_ BitVec 32)))) (or (= (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~tmpList~0#1.base_39| v_ArrVal_1157) |c_ULTIMATE.start_main_~tree~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|)) |v_ULTIMATE.start_main_~tmpList~0#1.base_38|) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~tmpList~0#1.base_39|))) (= |c_ULTIMATE.start_main_~tree~0#1.base| |v_ULTIMATE.start_main_~tmpList~0#1.base_38|) (and (forall ((v_ArrVal_1160 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1164 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1158 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (select (select (store (store (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~tmpList~0#1.base_39| v_ArrVal_1158) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~tmpList~0#1.base_39| v_ArrVal_1157) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse1) v_ArrVal_1160) |v_ULTIMATE.start_main_~tmpList~0#1.base_38| v_ArrVal_1164) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse1)))) (bvule .cse0 (bvadd (_ bv4 32) .cse0)))) (forall ((v_ArrVal_1163 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1160 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1164 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1159 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1158 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1162 (_ BitVec 32)) (v_ArrVal_1156 (_ BitVec 32))) (let ((.cse4 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~tmpList~0#1.base_39| v_ArrVal_1157)) (.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (let ((.cse2 (select (select .cse4 |c_ULTIMATE.start_main_~tree~0#1.base|) .cse3))) (bvule (bvadd (_ bv4 32) (select (select (store (store (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~tmpList~0#1.base_39| v_ArrVal_1158) .cse2 v_ArrVal_1160) |v_ULTIMATE.start_main_~tmpList~0#1.base_38| v_ArrVal_1164) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse3)) (select (store (store |c_#length| |v_ULTIMATE.start_main_~tmpList~0#1.base_39| v_ArrVal_1156) |v_ULTIMATE.start_main_~tmpList~0#1.base_38| v_ArrVal_1162) (select (select (store (store .cse4 .cse2 v_ArrVal_1159) |v_ULTIMATE.start_main_~tmpList~0#1.base_38| v_ArrVal_1163) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse3))))))))) is different from false [2021-11-23 17:14:03,033 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~tmpList~0#1.base_39| (_ BitVec 32)) (|v_ULTIMATE.start_main_~tmpList~0#1.base_38| (_ BitVec 32)) (v_ArrVal_1155 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1157 (Array (_ BitVec 32) (_ BitVec 32)))) (or (= (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_1155) |v_ULTIMATE.start_main_~tmpList~0#1.base_39| v_ArrVal_1157) |c_ULTIMATE.start_main_~tree~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|)) |v_ULTIMATE.start_main_~tmpList~0#1.base_38|) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~tmpList~0#1.base_39|))) (and (forall ((v_ArrVal_1160 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1164 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1154 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1158 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (select (select (store (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_1154) |v_ULTIMATE.start_main_~tmpList~0#1.base_39| v_ArrVal_1158) (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_1155) |v_ULTIMATE.start_main_~tmpList~0#1.base_39| v_ArrVal_1157) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse1) v_ArrVal_1160) |v_ULTIMATE.start_main_~tmpList~0#1.base_38| v_ArrVal_1164) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse1)))) (bvule .cse0 (bvadd .cse0 (_ bv4 32))))) (forall ((v_ArrVal_1163 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1160 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1164 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1154 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1159 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1158 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1162 (_ BitVec 32)) (v_ArrVal_1156 (_ BitVec 32))) (let ((.cse4 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_1155) |v_ULTIMATE.start_main_~tmpList~0#1.base_39| v_ArrVal_1157)) (.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (let ((.cse2 (select (select .cse4 |c_ULTIMATE.start_main_~tree~0#1.base|) .cse3))) (bvule (bvadd (select (select (store (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_1154) |v_ULTIMATE.start_main_~tmpList~0#1.base_39| v_ArrVal_1158) .cse2 v_ArrVal_1160) |v_ULTIMATE.start_main_~tmpList~0#1.base_38| v_ArrVal_1164) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse3) (_ bv4 32)) (select (store (store |c_#length| |v_ULTIMATE.start_main_~tmpList~0#1.base_39| v_ArrVal_1156) |v_ULTIMATE.start_main_~tmpList~0#1.base_38| v_ArrVal_1162) (select (select (store (store .cse4 .cse2 v_ArrVal_1159) |v_ULTIMATE.start_main_~tmpList~0#1.base_38| v_ArrVal_1163) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse3))))))) (= |c_ULTIMATE.start_main_~tree~0#1.base| |v_ULTIMATE.start_main_~tmpList~0#1.base_38|))) is different from false [2021-11-23 17:14:07,171 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 17:14:07,172 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 1 case distinctions, treesize of input 219 treesize of output 200 [2021-11-23 17:14:07,204 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 17:14:07,204 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 1 case distinctions, treesize of input 225 treesize of output 175 [2021-11-23 17:14:07,209 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 17:14:07,209 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 17:14:07,213 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1095 treesize of output 963 [2021-11-23 17:14:07,223 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 17:14:07,224 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 17:14:07,230 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 4421 treesize of output 4199 [2021-11-23 17:14:07,270 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 4199 treesize of output 3835 [2021-11-23 17:14:07,315 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 3757 treesize of output 3501 [2021-11-23 17:14:07,336 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 3501 treesize of output 3245 [2021-11-23 17:14:07,357 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 3245 treesize of output 3117 [2021-11-23 17:14:07,377 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3117 treesize of output 3101 [2021-11-23 17:14:07,404 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 3101 treesize of output 3069 [2021-11-23 17:14:07,429 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-23 17:14:07,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457718268] [2021-11-23 17:14:07,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:14:07,430 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 17:14:07,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:14:07,431 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 17:14:07,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-11-23 17:14:07,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:14:07,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 17:14:07,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:14:07,682 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 17:14:07,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2021-11-23 17:14:07,753 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 26 treesize of output 28 [2021-11-23 17:14:07,758 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 41 [2021-11-23 17:14:07,803 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 29 treesize of output 17 [2021-11-23 17:14:07,807 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 40 treesize of output 16 [2021-11-23 17:14:07,821 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:14:07,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 17:14:07,911 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1215 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~tmpList~0#1.base| v_ArrVal_1215) |c_ULTIMATE.start_main_~tree~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|)))) (bvule .cse0 (bvadd (_ bv4 32) .cse0)))) (forall ((v_ArrVal_1215 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1216 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~tmpList~0#1.base| v_ArrVal_1215) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tmpList~0#1.base| v_ArrVal_1216) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse1)))))) is different from false [2021-11-23 17:14:07,973 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 17:14:07,973 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 58 treesize of output 62 [2021-11-23 17:14:08,295 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 124 treesize of output 82 [2021-11-23 17:14:08,299 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 86 treesize of output 80 [2021-11-23 17:14:08,304 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 65 [2021-11-23 17:14:08,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 57 [2021-11-23 17:14:08,315 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 57 treesize of output 53 [2021-11-23 17:14:08,416 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-11-23 17:14:08,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457718268] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 17:14:08,416 INFO L186 FreeRefinementEngine]: Found 0 perfect and 4 imperfect interpolant sequences. [2021-11-23 17:14:08,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7] total 10 [2021-11-23 17:14:08,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900175274] [2021-11-23 17:14:08,417 INFO L85 oduleStraightlineAll]: Using 4 imperfect interpolants to construct interpolant automaton [2021-11-23 17:14:08,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-23 17:14:08,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:14:08,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-23 17:14:08,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=310, Unknown=9, NotChecked=344, Total=756 [2021-11-23 17:14:08,419 INFO L87 Difference]: Start difference. First operand 364 states and 519 transitions. Second operand has 11 states, 10 states have (on average 3.1) internal successors, (31), 11 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:14:14,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:14:14,045 INFO L93 Difference]: Finished difference Result 777 states and 1095 transitions. [2021-11-23 17:14:14,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-23 17:14:14,048 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.1) internal successors, (31), 11 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 26 [2021-11-23 17:14:14,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:14:14,051 INFO L225 Difference]: With dead ends: 777 [2021-11-23 17:14:14,051 INFO L226 Difference]: Without dead ends: 777 [2021-11-23 17:14:14,051 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 115 SyntacticMatches, 5 SemanticMatches, 32 ConstructedPredicates, 8 IntricatePredicates, 1 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=135, Invalid=538, Unknown=9, NotChecked=440, Total=1122 [2021-11-23 17:14:14,052 INFO L933 BasicCegarLoop]: 202 mSDtfsCounter, 315 mSDsluCounter, 787 mSDsCounter, 0 mSdLazyCounter, 846 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 989 SdHoareTripleChecker+Invalid, 1471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 610 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-11-23 17:14:14,052 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [315 Valid, 989 Invalid, 1471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 846 Invalid, 0 Unknown, 610 Unchecked, 4.6s Time] [2021-11-23 17:14:14,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2021-11-23 17:14:14,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 357. [2021-11-23 17:14:14,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 304 states have (on average 1.6842105263157894) internal successors, (512), 356 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:14:14,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 512 transitions. [2021-11-23 17:14:14,063 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 512 transitions. Word has length 26 [2021-11-23 17:14:14,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:14:14,063 INFO L470 AbstractCegarLoop]: Abstraction has 357 states and 512 transitions. [2021-11-23 17:14:14,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.1) internal successors, (31), 11 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:14:14,064 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 512 transitions. [2021-11-23 17:14:14,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-23 17:14:14,064 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:14:14,064 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:14:14,077 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (31)] Ended with exit code 0 [2021-11-23 17:14:14,280 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (32)] Ended with exit code 0 [2021-11-23 17:14:14,502 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2021-11-23 17:14:14,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 17:14:14,678 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 100 more)] === [2021-11-23 17:14:14,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:14:14,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1155102742, now seen corresponding path program 1 times [2021-11-23 17:14:14,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:14:14,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1375879271] [2021-11-23 17:14:14,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:14:14,679 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:14:14,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:14:14,680 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:14:14,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-11-23 17:14:14,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:14:14,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 17:14:14,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:14:14,980 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-23 17:14:14,984 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-23 17:14:15,020 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:14:15,020 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:14:15,020 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:14:15,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1375879271] [2021-11-23 17:14:15,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1375879271] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:14:15,021 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:14:15,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 17:14:15,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053290093] [2021-11-23 17:14:15,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:14:15,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 17:14:15,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:14:15,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 17:14:15,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 17:14:15,023 INFO L87 Difference]: Start difference. First operand 357 states and 512 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:14:16,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:14:16,385 INFO L93 Difference]: Finished difference Result 461 states and 670 transitions. [2021-11-23 17:14:16,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 17:14:16,386 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 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 26 [2021-11-23 17:14:16,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:14:16,389 INFO L225 Difference]: With dead ends: 461 [2021-11-23 17:14:16,389 INFO L226 Difference]: Without dead ends: 461 [2021-11-23 17:14:16,389 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-23 17:14:16,390 INFO L933 BasicCegarLoop]: 131 mSDtfsCounter, 66 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-23 17:14:16,390 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 475 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-23 17:14:16,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2021-11-23 17:14:16,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 365. [2021-11-23 17:14:16,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 312 states have (on average 1.6762820512820513) internal successors, (523), 364 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:14:16,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 523 transitions. [2021-11-23 17:14:16,399 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 523 transitions. Word has length 26 [2021-11-23 17:14:16,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:14:16,399 INFO L470 AbstractCegarLoop]: Abstraction has 365 states and 523 transitions. [2021-11-23 17:14:16,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:14:16,400 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 523 transitions. [2021-11-23 17:14:16,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-23 17:14:16,400 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:14:16,401 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:14:16,427 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-11-23 17:14:16,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:14:16,613 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 100 more)] === [2021-11-23 17:14:16,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:14:16,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1154918044, now seen corresponding path program 1 times [2021-11-23 17:14:16,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:14:16,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [928717345] [2021-11-23 17:14:16,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:14:16,614 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:14:16,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:14:16,615 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:14:16,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-11-23 17:14:16,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:14:16,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-23 17:14:16,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:14:16,796 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 6 treesize of output 5 [2021-11-23 17:14:16,822 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 17:14:16,835 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 17:14:16,900 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 17:14:16,900 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 16 [2021-11-23 17:14:16,975 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-23 17:14:16,975 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 1 case distinctions, treesize of input 23 treesize of output 22 [2021-11-23 17:14:16,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:14:16,993 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-23 17:14:17,167 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 17:14:17,168 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2021-11-23 17:14:17,175 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2021-11-23 17:14:17,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:14:17,378 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 29 treesize of output 11 [2021-11-23 17:14:17,382 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-23 17:14:17,465 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:14:17,465 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:14:17,465 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:14:17,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [928717345] [2021-11-23 17:14:17,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [928717345] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:14:17,466 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:14:17,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-23 17:14:17,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203460668] [2021-11-23 17:14:17,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:14:17,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 17:14:17,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:14:17,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 17:14:17,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-23 17:14:17,467 INFO L87 Difference]: Start difference. First operand 365 states and 523 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:14:20,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:14:20,464 INFO L93 Difference]: Finished difference Result 526 states and 732 transitions. [2021-11-23 17:14:20,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-23 17:14:20,465 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 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 26 [2021-11-23 17:14:20,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:14:20,467 INFO L225 Difference]: With dead ends: 526 [2021-11-23 17:14:20,468 INFO L226 Difference]: Without dead ends: 526 [2021-11-23 17:14:20,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2021-11-23 17:14:20,468 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 228 mSDsluCounter, 695 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-23 17:14:20,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [228 Valid, 812 Invalid, 748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 714 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-11-23 17:14:20,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2021-11-23 17:14:20,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 365. [2021-11-23 17:14:20,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 312 states have (on average 1.669871794871795) internal successors, (521), 364 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:14:20,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 521 transitions. [2021-11-23 17:14:20,477 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 521 transitions. Word has length 26 [2021-11-23 17:14:20,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:14:20,478 INFO L470 AbstractCegarLoop]: Abstraction has 365 states and 521 transitions. [2021-11-23 17:14:20,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:14:20,478 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 521 transitions. [2021-11-23 17:14:20,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-23 17:14:20,479 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:14:20,479 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:14:20,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2021-11-23 17:14:20,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:14:20,691 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 100 more)] === [2021-11-23 17:14:20,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:14:20,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1931939110, now seen corresponding path program 1 times [2021-11-23 17:14:20,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:14:20,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [801464933] [2021-11-23 17:14:20,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:14:20,692 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:14:20,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:14:20,693 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:14:20,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-11-23 17:14:20,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:14:20,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 17:14:20,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:14:20,894 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 6 treesize of output 5 [2021-11-23 17:14:20,901 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 6 treesize of output 5 [2021-11-23 17:14:20,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:14:20,972 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 14 [2021-11-23 17:14:20,987 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 17:14:20,988 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 16 [2021-11-23 17:14:21,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:14:21,011 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:14:21,011 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:14:21,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [801464933] [2021-11-23 17:14:21,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [801464933] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:14:21,012 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:14:21,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 17:14:21,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125714987] [2021-11-23 17:14:21,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:14:21,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 17:14:21,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:14:21,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 17:14:21,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 17:14:21,013 INFO L87 Difference]: Start difference. First operand 365 states and 521 transitions. Second operand has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:14:22,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:14:22,019 INFO L93 Difference]: Finished difference Result 786 states and 1164 transitions. [2021-11-23 17:14:22,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 17:14:22,020 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 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 26 [2021-11-23 17:14:22,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:14:22,023 INFO L225 Difference]: With dead ends: 786 [2021-11-23 17:14:22,023 INFO L226 Difference]: Without dead ends: 786 [2021-11-23 17:14:22,024 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 17:14:22,024 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 200 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-23 17:14:22,025 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [200 Valid, 344 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-23 17:14:22,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2021-11-23 17:14:22,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 362. [2021-11-23 17:14:22,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 312 states have (on average 1.6602564102564104) internal successors, (518), 361 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:14:22,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 518 transitions. [2021-11-23 17:14:22,035 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 518 transitions. Word has length 26 [2021-11-23 17:14:22,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:14:22,035 INFO L470 AbstractCegarLoop]: Abstraction has 362 states and 518 transitions. [2021-11-23 17:14:22,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:14:22,036 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 518 transitions. [2021-11-23 17:14:22,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-23 17:14:22,036 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:14:22,036 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:14:22,052 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (36)] Ended with exit code 0 [2021-11-23 17:14:22,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:14:22,249 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr97ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 100 more)] === [2021-11-23 17:14:22,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:14:22,249 INFO L85 PathProgramCache]: Analyzing trace with hash 265780375, now seen corresponding path program 1 times [2021-11-23 17:14:22,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:14:22,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2135150314] [2021-11-23 17:14:22,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:14:22,250 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:14:22,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:14:22,251 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:14:22,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-11-23 17:14:22,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:14:22,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-23 17:14:22,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:14:22,411 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 6 treesize of output 5 [2021-11-23 17:14:22,473 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 17:14:22,473 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2021-11-23 17:14:22,502 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 17:14:22,512 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 17:14:22,564 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 20 treesize of output 8 [2021-11-23 17:14:22,615 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-11-23 17:14:22,752 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-23 17:14:22,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:14:22,780 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:14:22,780 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:14:22,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2135150314] [2021-11-23 17:14:22,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2135150314] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:14:22,781 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:14:22,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-23 17:14:22,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362192450] [2021-11-23 17:14:22,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:14:22,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 17:14:22,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:14:22,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 17:14:22,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-23 17:14:22,782 INFO L87 Difference]: Start difference. First operand 362 states and 518 transitions. Second operand has 9 states, 8 states have (on average 3.5) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:14:24,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:14:24,686 INFO L93 Difference]: Finished difference Result 525 states and 731 transitions. [2021-11-23 17:14:24,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-23 17:14:24,687 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 9 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 28 [2021-11-23 17:14:24,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:14:24,689 INFO L225 Difference]: With dead ends: 525 [2021-11-23 17:14:24,690 INFO L226 Difference]: Without dead ends: 525 [2021-11-23 17:14:24,690 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2021-11-23 17:14:24,691 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 251 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-23 17:14:24,691 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [251 Valid, 579 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-23 17:14:24,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2021-11-23 17:14:24,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 365. [2021-11-23 17:14:24,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 315 states have (on average 1.6571428571428573) internal successors, (522), 364 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:14:24,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 522 transitions. [2021-11-23 17:14:24,699 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 522 transitions. Word has length 28 [2021-11-23 17:14:24,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:14:24,700 INFO L470 AbstractCegarLoop]: Abstraction has 365 states and 522 transitions. [2021-11-23 17:14:24,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:14:24,700 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 522 transitions. [2021-11-23 17:14:24,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-23 17:14:24,701 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:14:24,701 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:14:24,711 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2021-11-23 17:14:24,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:14:24,907 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr85REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 100 more)] === [2021-11-23 17:14:24,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:14:24,908 INFO L85 PathProgramCache]: Analyzing trace with hash 265781467, now seen corresponding path program 1 times [2021-11-23 17:14:24,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:14:24,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [441998463] [2021-11-23 17:14:24,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:14:24,908 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:14:24,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:14:24,909 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:14:24,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2021-11-23 17:14:25,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:14:25,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 17:14:25,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:14:25,204 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2021-11-23 17:14:25,207 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 40 treesize of output 16 [2021-11-23 17:14:25,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:14:25,259 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:14:25,259 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:14:25,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [441998463] [2021-11-23 17:14:25,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [441998463] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:14:25,259 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:14:25,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 17:14:25,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228411861] [2021-11-23 17:14:25,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:14:25,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 17:14:25,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:14:25,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 17:14:25,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 17:14:25,260 INFO L87 Difference]: Start difference. First operand 365 states and 522 transitions. Second operand has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:14:26,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:14:26,908 INFO L93 Difference]: Finished difference Result 364 states and 518 transitions. [2021-11-23 17:14:26,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 17:14:26,909 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 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 28 [2021-11-23 17:14:26,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:14:26,910 INFO L225 Difference]: With dead ends: 364 [2021-11-23 17:14:26,910 INFO L226 Difference]: Without dead ends: 364 [2021-11-23 17:14:26,911 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-23 17:14:26,911 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 35 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-23 17:14:26,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 323 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-23 17:14:26,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2021-11-23 17:14:26,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 364. [2021-11-23 17:14:26,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 315 states have (on average 1.6444444444444444) internal successors, (518), 363 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:14:26,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 518 transitions. [2021-11-23 17:14:26,918 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 518 transitions. Word has length 28 [2021-11-23 17:14:26,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:14:26,919 INFO L470 AbstractCegarLoop]: Abstraction has 364 states and 518 transitions. [2021-11-23 17:14:26,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:14:26,919 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 518 transitions. [2021-11-23 17:14:26,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-23 17:14:26,920 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:14:26,920 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:14:26,932 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2021-11-23 17:14:27,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:14:27,132 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr84REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 100 more)] === [2021-11-23 17:14:27,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:14:27,132 INFO L85 PathProgramCache]: Analyzing trace with hash 265781466, now seen corresponding path program 1 times [2021-11-23 17:14:27,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:14:27,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [644334175] [2021-11-23 17:14:27,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:14:27,133 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:14:27,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:14:27,133 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:14:27,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2021-11-23 17:14:27,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:14:27,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 17:14:27,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:14:27,330 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 26 treesize of output 14 [2021-11-23 17:14:27,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:14:27,348 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:14:27,348 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:14:27,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [644334175] [2021-11-23 17:14:27,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [644334175] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:14:27,349 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:14:27,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 17:14:27,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849485127] [2021-11-23 17:14:27,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:14:27,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 17:14:27,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:14:27,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 17:14:27,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 17:14:27,350 INFO L87 Difference]: Start difference. First operand 364 states and 518 transitions. Second operand has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:14:28,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:14:28,331 INFO L93 Difference]: Finished difference Result 363 states and 514 transitions. [2021-11-23 17:14:28,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 17:14:28,332 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 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 28 [2021-11-23 17:14:28,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:14:28,333 INFO L225 Difference]: With dead ends: 363 [2021-11-23 17:14:28,333 INFO L226 Difference]: Without dead ends: 363 [2021-11-23 17:14:28,334 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-23 17:14:28,334 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 23 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-23 17:14:28,335 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 336 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-23 17:14:28,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2021-11-23 17:14:28,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 363. [2021-11-23 17:14:28,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 315 states have (on average 1.6317460317460317) internal successors, (514), 362 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:14:28,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 514 transitions. [2021-11-23 17:14:28,341 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 514 transitions. Word has length 28 [2021-11-23 17:14:28,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:14:28,341 INFO L470 AbstractCegarLoop]: Abstraction has 363 states and 514 transitions. [2021-11-23 17:14:28,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:14:28,342 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 514 transitions. [2021-11-23 17:14:28,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-23 17:14:28,342 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:14:28,343 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:14:28,361 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (39)] Ended with exit code 0 [2021-11-23 17:14:28,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:14:28,555 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr98ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 100 more)] === [2021-11-23 17:14:28,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:14:28,555 INFO L85 PathProgramCache]: Analyzing trace with hash -350742638, now seen corresponding path program 1 times [2021-11-23 17:14:28,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:14:28,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1750371485] [2021-11-23 17:14:28,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:14:28,556 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:14:28,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:14:28,557 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:14:28,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2021-11-23 17:14:28,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:14:28,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-23 17:14:28,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:14:28,735 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 6 treesize of output 5 [2021-11-23 17:14:28,773 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 17:14:28,773 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 16 [2021-11-23 17:14:28,807 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 17:14:28,953 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 17:14:28,953 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 33 [2021-11-23 17:14:29,184 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 29 treesize of output 11 [2021-11-23 17:14:29,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:14:29,223 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:14:29,223 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:14:29,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1750371485] [2021-11-23 17:14:29,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1750371485] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:14:29,223 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:14:29,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 17:14:29,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475456730] [2021-11-23 17:14:29,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:14:29,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 17:14:29,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:14:29,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 17:14:29,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-23 17:14:29,229 INFO L87 Difference]: Start difference. First operand 363 states and 514 transitions. Second operand has 8 states, 7 states have (on average 4.142857142857143) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:14:31,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:14:31,691 INFO L93 Difference]: Finished difference Result 515 states and 713 transitions. [2021-11-23 17:14:31,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-23 17:14:31,692 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.142857142857143) internal successors, (29), 8 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) Word has length 29 [2021-11-23 17:14:31,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:14:31,694 INFO L225 Difference]: With dead ends: 515 [2021-11-23 17:14:31,694 INFO L226 Difference]: Without dead ends: 515 [2021-11-23 17:14:31,695 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-11-23 17:14:31,695 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 215 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-23 17:14:31,695 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [215 Valid, 529 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-23 17:14:31,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2021-11-23 17:14:31,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 364. [2021-11-23 17:14:31,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 316 states have (on average 1.629746835443038) internal successors, (515), 363 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:14:31,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 515 transitions. [2021-11-23 17:14:31,705 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 515 transitions. Word has length 29 [2021-11-23 17:14:31,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:14:31,705 INFO L470 AbstractCegarLoop]: Abstraction has 364 states and 515 transitions. [2021-11-23 17:14:31,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.142857142857143) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:14:31,706 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 515 transitions. [2021-11-23 17:14:31,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-23 17:14:31,707 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:14:31,707 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:14:31,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2021-11-23 17:14:31,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:14:31,922 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr99ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 100 more)] === [2021-11-23 17:14:31,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:14:31,922 INFO L85 PathProgramCache]: Analyzing trace with hash 2011880441, now seen corresponding path program 1 times [2021-11-23 17:14:31,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:14:31,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [281948513] [2021-11-23 17:14:31,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:14:31,923 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:14:31,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:14:31,927 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:14:31,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2021-11-23 17:14:32,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:14:32,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 17:14:32,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:14:32,152 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 26 treesize of output 14 [2021-11-23 17:14:32,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:14:32,180 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:14:32,181 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:14:32,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [281948513] [2021-11-23 17:14:32,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [281948513] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:14:32,181 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:14:32,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 17:14:32,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790696274] [2021-11-23 17:14:32,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:14:32,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 17:14:32,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:14:32,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 17:14:32,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 17:14:32,183 INFO L87 Difference]: Start difference. First operand 364 states and 515 transitions. Second operand has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:14:33,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:14:33,278 INFO L93 Difference]: Finished difference Result 363 states and 511 transitions. [2021-11-23 17:14:33,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 17:14:33,278 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 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 30 [2021-11-23 17:14:33,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:14:33,280 INFO L225 Difference]: With dead ends: 363 [2021-11-23 17:14:33,280 INFO L226 Difference]: Without dead ends: 363 [2021-11-23 17:14:33,281 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-23 17:14:33,281 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 23 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-23 17:14:33,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 329 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-23 17:14:33,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2021-11-23 17:14:33,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 363. [2021-11-23 17:14:33,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 316 states have (on average 1.6170886075949367) internal successors, (511), 362 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:14:33,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 511 transitions. [2021-11-23 17:14:33,287 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 511 transitions. Word has length 30 [2021-11-23 17:14:33,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:14:33,287 INFO L470 AbstractCegarLoop]: Abstraction has 363 states and 511 transitions. [2021-11-23 17:14:33,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:14:33,287 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 511 transitions. [2021-11-23 17:14:33,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-23 17:14:33,288 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:14:33,288 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:14:33,301 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2021-11-23 17:14:33,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:14:33,489 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr49REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 100 more)] === [2021-11-23 17:14:33,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:14:33,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1091782954, now seen corresponding path program 1 times [2021-11-23 17:14:33,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:14:33,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1349493184] [2021-11-23 17:14:33,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:14:33,490 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:14:33,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:14:33,490 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:14:33,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2021-11-23 17:14:33,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:14:33,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-23 17:14:33,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:14:33,702 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 6 treesize of output 5 [2021-11-23 17:14:33,736 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 17:14:33,751 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 [2021-11-23 17:14:33,819 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 21 treesize of output 9 [2021-11-23 17:14:33,826 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-23 17:14:33,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:14:33,878 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:14:33,879 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:14:33,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1349493184] [2021-11-23 17:14:33,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1349493184] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:14:33,879 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:14:33,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 17:14:33,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958446849] [2021-11-23 17:14:33,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:14:33,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 17:14:33,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:14:33,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 17:14:33,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 17:14:33,881 INFO L87 Difference]: Start difference. First operand 363 states and 511 transitions. Second operand has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:14:34,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:14:34,992 INFO L93 Difference]: Finished difference Result 362 states and 510 transitions. [2021-11-23 17:14:34,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 17:14:34,993 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 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 30 [2021-11-23 17:14:34,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:14:34,995 INFO L225 Difference]: With dead ends: 362 [2021-11-23 17:14:34,995 INFO L226 Difference]: Without dead ends: 362 [2021-11-23 17:14:34,995 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-23 17:14:34,996 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 5 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-23 17:14:34,997 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 373 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-23 17:14:34,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2021-11-23 17:14:35,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 362. [2021-11-23 17:14:35,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 316 states have (on average 1.6139240506329113) internal successors, (510), 361 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:14:35,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 510 transitions. [2021-11-23 17:14:35,002 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 510 transitions. Word has length 30 [2021-11-23 17:14:35,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:14:35,002 INFO L470 AbstractCegarLoop]: Abstraction has 362 states and 510 transitions. [2021-11-23 17:14:35,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:14:35,003 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 510 transitions. [2021-11-23 17:14:35,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-23 17:14:35,003 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:14:35,003 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:14:35,015 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2021-11-23 17:14:35,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:14:35,204 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr48REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 100 more)] === [2021-11-23 17:14:35,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:14:35,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1091782953, now seen corresponding path program 1 times [2021-11-23 17:14:35,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:14:35,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1906079664] [2021-11-23 17:14:35,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:14:35,205 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:14:35,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:14:35,209 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:14:35,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2021-11-23 17:14:35,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:14:35,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 17:14:35,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:14:35,417 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 6 treesize of output 5 [2021-11-23 17:14:35,434 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 17:14:35,464 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 25 treesize of output 13 [2021-11-23 17:14:35,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:14:35,486 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:14:35,486 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:14:35,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1906079664] [2021-11-23 17:14:35,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1906079664] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:14:35,486 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:14:35,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 17:14:35,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702763372] [2021-11-23 17:14:35,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:14:35,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 17:14:35,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:14:35,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 17:14:35,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 17:14:35,488 INFO L87 Difference]: Start difference. First operand 362 states and 510 transitions. Second operand has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:14:36,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:14:36,312 INFO L93 Difference]: Finished difference Result 361 states and 509 transitions. [2021-11-23 17:14:36,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 17:14:36,313 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 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 30 [2021-11-23 17:14:36,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:14:36,315 INFO L225 Difference]: With dead ends: 361 [2021-11-23 17:14:36,315 INFO L226 Difference]: Without dead ends: 361 [2021-11-23 17:14:36,315 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-23 17:14:36,316 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 3 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-23 17:14:36,316 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 403 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-23 17:14:36,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2021-11-23 17:14:36,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 361. [2021-11-23 17:14:36,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 316 states have (on average 1.610759493670886) internal successors, (509), 360 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:14:36,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 509 transitions. [2021-11-23 17:14:36,323 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 509 transitions. Word has length 30 [2021-11-23 17:14:36,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:14:36,324 INFO L470 AbstractCegarLoop]: Abstraction has 361 states and 509 transitions. [2021-11-23 17:14:36,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:14:36,324 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 509 transitions. [2021-11-23 17:14:36,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-23 17:14:36,325 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:14:36,325 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:14:36,348 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2021-11-23 17:14:36,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:14:36,538 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr88REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 100 more)] === [2021-11-23 17:14:36,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:14:36,539 INFO L85 PathProgramCache]: Analyzing trace with hash -2023798884, now seen corresponding path program 1 times [2021-11-23 17:14:36,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:14:36,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [26971722] [2021-11-23 17:14:36,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:14:36,539 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:14:36,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:14:36,540 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:14:36,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2021-11-23 17:14:36,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:14:36,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-23 17:14:36,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:14:36,734 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 6 treesize of output 5 [2021-11-23 17:14:36,788 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 17:14:36,788 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2021-11-23 17:14:36,819 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 17:14:36,829 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 17:14:37,075 INFO L354 Elim1Store]: treesize reduction 43, result has 17.3 percent of original size [2021-11-23 17:14:37,075 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 81 treesize of output 53 [2021-11-23 17:14:37,082 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 70 treesize of output 48 [2021-11-23 17:14:37,755 INFO L354 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2021-11-23 17:14:37,755 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 108 treesize of output 49 [2021-11-23 17:14:37,762 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 16 [2021-11-23 17:14:37,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:14:37,845 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:14:37,845 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:14:37,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [26971722] [2021-11-23 17:14:37,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [26971722] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:14:37,846 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:14:37,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-23 17:14:37,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948820040] [2021-11-23 17:14:37,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:14:37,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-23 17:14:37,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:14:37,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-23 17:14:37,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-23 17:14:37,848 INFO L87 Difference]: Start difference. First operand 361 states and 509 transitions. Second operand has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:14:40,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:14:40,824 INFO L93 Difference]: Finished difference Result 449 states and 629 transitions. [2021-11-23 17:14:40,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-23 17:14:40,825 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 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 31 [2021-11-23 17:14:40,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:14:40,827 INFO L225 Difference]: With dead ends: 449 [2021-11-23 17:14:40,827 INFO L226 Difference]: Without dead ends: 449 [2021-11-23 17:14:40,828 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=90, Invalid=372, Unknown=0, NotChecked=0, Total=462 [2021-11-23 17:14:40,828 INFO L933 BasicCegarLoop]: 103 mSDtfsCounter, 187 mSDsluCounter, 659 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 762 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 93 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-23 17:14:40,828 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [187 Valid, 762 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 576 Invalid, 0 Unknown, 93 Unchecked, 2.4s Time] [2021-11-23 17:14:40,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2021-11-23 17:14:40,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 361. [2021-11-23 17:14:40,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 316 states have (on average 1.6075949367088607) internal successors, (508), 360 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:14:40,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 508 transitions. [2021-11-23 17:14:40,834 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 508 transitions. Word has length 31 [2021-11-23 17:14:40,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:14:40,835 INFO L470 AbstractCegarLoop]: Abstraction has 361 states and 508 transitions. [2021-11-23 17:14:40,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:14:40,835 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 508 transitions. [2021-11-23 17:14:40,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-23 17:14:40,835 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:14:40,835 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:14:40,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2021-11-23 17:14:41,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:14:41,036 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 100 more)] === [2021-11-23 17:14:41,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:14:41,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1043921533, now seen corresponding path program 1 times [2021-11-23 17:14:41,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:14:41,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [708572443] [2021-11-23 17:14:41,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:14:41,037 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:14:41,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:14:41,038 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:14:41,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2021-11-23 17:14:41,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:14:41,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 36 conjunts are in the unsatisfiable core [2021-11-23 17:14:41,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:14:41,305 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 6 treesize of output 5 [2021-11-23 17:14:41,326 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-23 17:14:41,335 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-23 17:14:41,394 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-23 17:14:41,394 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 21 treesize of output 20 [2021-11-23 17:14:41,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:14:41,406 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 21 treesize of output 20 [2021-11-23 17:14:41,436 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 17:14:41,437 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 16 [2021-11-23 17:14:41,504 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-23 17:14:41,504 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 21 treesize of output 20 [2021-11-23 17:14:41,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:14:41,516 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 21 treesize of output 20 [2021-11-23 17:14:41,818 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 17:14:41,818 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2021-11-23 17:14:41,828 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2021-11-23 17:14:41,923 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 17:14:41,923 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 16 [2021-11-23 17:14:42,120 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 14 treesize of output 16 [2021-11-23 17:14:42,133 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 24 treesize of output 24 [2021-11-23 17:14:42,307 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 17:14:42,307 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2021-11-23 17:14:42,314 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 20 treesize of output 22 [2021-11-23 17:14:42,520 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-23 17:14:42,527 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-11-23 17:14:42,527 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 25 treesize of output 11 [2021-11-23 17:14:42,631 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:14:42,631 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 17:14:42,837 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1703 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem11#1.base| v_ArrVal_1703) |c_ULTIMATE.start_main_~tree~0#1.base|) |c_ULTIMATE.start_main_~tree~0#1.offset|) (_ bv0 32))) (forall ((v_ArrVal_1704 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 32) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem11#1.base| v_ArrVal_1704) |c_ULTIMATE.start_main_~tree~0#1.base|) |c_ULTIMATE.start_main_~tree~0#1.offset|)))) is different from false [2021-11-23 17:14:42,859 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1703 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|)) v_ArrVal_1703) |c_ULTIMATE.start_main_~tree~0#1.base|) |c_ULTIMATE.start_main_~tree~0#1.offset|) (_ bv0 32))) (forall ((v_ArrVal_1704 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|)) v_ArrVal_1704) |c_ULTIMATE.start_main_~tree~0#1.base|) |c_ULTIMATE.start_main_~tree~0#1.offset|) (_ bv0 32)))) is different from false [2021-11-23 17:14:42,901 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1704 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1701 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tmpList~0#1.base| v_ArrVal_1701))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~tree~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|)) v_ArrVal_1704)) |c_ULTIMATE.start_main_~tree~0#1.base|) |c_ULTIMATE.start_main_~tree~0#1.offset|) (_ bv0 32))) (forall ((v_ArrVal_1702 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1703 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1701 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~tmpList~0#1.base| v_ArrVal_1702) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tmpList~0#1.base| v_ArrVal_1701) |c_ULTIMATE.start_main_~tree~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|)) v_ArrVal_1703) |c_ULTIMATE.start_main_~tree~0#1.base|) |c_ULTIMATE.start_main_~tree~0#1.offset|) (_ bv0 32)))) is different from false [2021-11-23 17:14:43,035 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~tmpList~0#1.base_41| (_ BitVec 32))) (or (and (forall ((v_ArrVal_1702 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1703 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1701 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~tmpList~0#1.base_41| v_ArrVal_1702) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~tmpList~0#1.base_41| v_ArrVal_1701) |c_ULTIMATE.start_main_~tree~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|)) v_ArrVal_1703) |c_ULTIMATE.start_main_~tree~0#1.base|) |c_ULTIMATE.start_main_~tree~0#1.offset|) (_ bv0 32))) (forall ((v_ArrVal_1704 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1701 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~tmpList~0#1.base_41| v_ArrVal_1701))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~tree~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|)) v_ArrVal_1704)) |c_ULTIMATE.start_main_~tree~0#1.base|) |c_ULTIMATE.start_main_~tree~0#1.offset|) (_ bv0 32)))) (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~tmpList~0#1.base_41|)))))) is different from false [2021-11-23 17:14:44,004 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-23 17:14:44,005 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 18 treesize of output 17 [2021-11-23 17:14:44,163 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~tmpList~0#1.base_41| (_ BitVec 32))) (or (and (forall ((v_ArrVal_1704 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1700 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1701 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 32) (select (select (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (let ((.cse0 (store (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base|) .cse1 |c_ULTIMATE.start_main_#t~malloc4#1.base|)) |c_ULTIMATE.start_main_#t~malloc4#1.base| v_ArrVal_1700) |v_ULTIMATE.start_main_~tmpList~0#1.base_41| v_ArrVal_1701))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~tree~0#1.base|) .cse1) v_ArrVal_1704))) |c_ULTIMATE.start_main_~tree~0#1.base|) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (forall ((v_ArrVal_1698 (_ BitVec 32)) (v_ArrVal_1699 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1702 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1703 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1700 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1701 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (store (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~tree~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~tree~0#1.base|) .cse2 v_ArrVal_1698)) |c_ULTIMATE.start_main_#t~malloc4#1.base| v_ArrVal_1699) |v_ULTIMATE.start_main_~tmpList~0#1.base_41| v_ArrVal_1702) (select (select (store (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base|) .cse2 |c_ULTIMATE.start_main_#t~malloc4#1.base|)) |c_ULTIMATE.start_main_#t~malloc4#1.base| v_ArrVal_1700) |v_ULTIMATE.start_main_~tmpList~0#1.base_41| v_ArrVal_1701) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse2) v_ArrVal_1703)) |c_ULTIMATE.start_main_~tree~0#1.base|) |c_ULTIMATE.start_main_~tree~0#1.offset|) (_ bv0 32)))) (= |c_ULTIMATE.start_main_~tree~0#1.base| |v_ULTIMATE.start_main_~tmpList~0#1.base_41|))) is different from false [2021-11-23 17:14:47,353 INFO L354 Elim1Store]: treesize reduction 74, result has 28.2 percent of original size [2021-11-23 17:14:47,354 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 3 case distinctions, treesize of input 129 treesize of output 140 [2021-11-23 17:14:47,594 INFO L354 Elim1Store]: treesize reduction 148, result has 27.8 percent of original size [2021-11-23 17:14:47,595 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 6 case distinctions, treesize of input 140 treesize of output 142 [2021-11-23 17:14:47,601 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 17:14:47,618 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 17:14:47,618 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 166 treesize of output 144 [2021-11-23 17:14:47,625 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 17:14:47,640 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 17:14:47,640 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 298 treesize of output 270 [2021-11-23 17:14:47,651 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 17:14:47,670 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 17:14:47,670 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 386 treesize of output 342 [2021-11-23 17:14:47,701 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 156 treesize of output 152 [2021-11-23 17:14:47,705 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 152 treesize of output 144 [2021-11-23 17:14:47,710 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 144 treesize of output 120 [2021-11-23 17:14:47,720 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-11-23 17:14:47,720 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 120 treesize of output 110 [2021-11-23 17:14:47,725 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 110 treesize of output 108 [2021-11-23 17:14:47,755 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-11-23 17:14:47,755 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:14:47,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [708572443] [2021-11-23 17:14:47,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [708572443] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 17:14:47,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [403795388] [2021-11-23 17:14:47,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:14:47,756 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 17:14:47,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/cvc4 [2021-11-23 17:14:47,756 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 17:14:47,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (46)] Waiting until timeout for monitored process [2021-11-23 17:14:48,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:14:48,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 40 conjunts are in the unsatisfiable core [2021-11-23 17:14:48,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:14:48,120 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 17:14:48,213 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-23 17:14:48,220 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 11 treesize of output 7 [2021-11-23 17:14:48,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:14:48,329 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 21 treesize of output 20 [2021-11-23 17:14:48,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:14:48,349 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 21 treesize of output 20 [2021-11-23 17:14:48,399 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 17:14:48,399 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 16 [2021-11-23 17:14:48,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:14:48,543 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 21 treesize of output 20 [2021-11-23 17:14:48,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:14:48,562 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 21 treesize of output 20 [2021-11-23 17:14:48,883 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 17:14:48,883 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2021-11-23 17:14:48,889 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 20 treesize of output 22 [2021-11-23 17:14:49,052 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 17:14:49,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 16 [2021-11-23 17:14:49,232 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 14 treesize of output 16 [2021-11-23 17:14:49,245 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 24 treesize of output 24 [2021-11-23 17:14:49,459 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 17:14:49,459 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2021-11-23 17:14:49,470 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 20 treesize of output 22 [2021-11-23 17:14:50,043 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:14:50,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 17:14:50,179 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1766 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem11#1.base| v_ArrVal_1766) |c_ULTIMATE.start_main_~tree~0#1.base|) |c_ULTIMATE.start_main_~tree~0#1.offset|) (_ bv0 32))) (forall ((v_ArrVal_1767 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem11#1.base| v_ArrVal_1767) |c_ULTIMATE.start_main_~tree~0#1.base|) |c_ULTIMATE.start_main_~tree~0#1.offset|) (_ bv0 32)))) is different from false [2021-11-23 17:14:50,206 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1766 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|)) v_ArrVal_1766) |c_ULTIMATE.start_main_~tree~0#1.base|) |c_ULTIMATE.start_main_~tree~0#1.offset|) (_ bv0 32))) (forall ((v_ArrVal_1767 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 32) (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|)) v_ArrVal_1767) |c_ULTIMATE.start_main_~tree~0#1.base|) |c_ULTIMATE.start_main_~tree~0#1.offset|)))) is different from false [2021-11-23 17:14:50,261 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1763 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1766 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tmpList~0#1.base| v_ArrVal_1763))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~tree~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|)) v_ArrVal_1766)) |c_ULTIMATE.start_main_~tree~0#1.base|) |c_ULTIMATE.start_main_~tree~0#1.offset|) (_ bv0 32))) (forall ((v_ArrVal_1764 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1763 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1767 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~tmpList~0#1.base| v_ArrVal_1764) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tmpList~0#1.base| v_ArrVal_1763) |c_ULTIMATE.start_main_~tree~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|)) v_ArrVal_1767) |c_ULTIMATE.start_main_~tree~0#1.base|) |c_ULTIMATE.start_main_~tree~0#1.offset|) (_ bv0 32)))) is different from false [2021-11-23 17:14:51,066 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~tmpList~0#1.base_43| (_ BitVec 32))) (or (and (forall ((v_ArrVal_1761 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1763 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1766 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 32) (select (select (let ((.cse0 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_1761) |v_ULTIMATE.start_main_~tmpList~0#1.base_43| v_ArrVal_1763))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~tree~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|)) v_ArrVal_1766)) |c_ULTIMATE.start_main_~tree~0#1.base|) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (forall ((v_ArrVal_1761 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1764 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1762 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1763 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1767 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 32) (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_1762) |v_ULTIMATE.start_main_~tmpList~0#1.base_43| v_ArrVal_1764) (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_1761) |v_ULTIMATE.start_main_~tmpList~0#1.base_43| v_ArrVal_1763) |c_ULTIMATE.start_main_~tree~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|)) v_ArrVal_1767) |c_ULTIMATE.start_main_~tree~0#1.base|) |c_ULTIMATE.start_main_~tree~0#1.offset|)))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~tmpList~0#1.base_43|))))) is different from false [2021-11-23 17:14:51,179 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-23 17:14:51,179 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 16 [2021-11-23 17:14:51,276 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~tmpList~0#1.base_43| (_ BitVec 32))) (or (= |c_ULTIMATE.start_main_~tree~0#1.base| |v_ULTIMATE.start_main_~tmpList~0#1.base_43|) (and (forall ((v_ArrVal_1761 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1763 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1766 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (let ((.cse0 (store (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base|) .cse1) v_ArrVal_1761) |v_ULTIMATE.start_main_~tmpList~0#1.base_43| v_ArrVal_1763))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~tree~0#1.base|) .cse1) v_ArrVal_1766))) |c_ULTIMATE.start_main_~tree~0#1.base|) |c_ULTIMATE.start_main_~tree~0#1.offset|) (_ bv0 32))) (forall ((v_ArrVal_1761 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1764 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1762 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1763 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1767 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (let ((.cse2 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$.offset| .cse2 v_ArrVal_1762) |v_ULTIMATE.start_main_~tmpList~0#1.base_43| v_ArrVal_1764) (select (select (store (store |c_#memory_$Pointer$.base| .cse2 v_ArrVal_1761) |v_ULTIMATE.start_main_~tmpList~0#1.base_43| v_ArrVal_1763) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse3) v_ArrVal_1767))) |c_ULTIMATE.start_main_~tree~0#1.base|) |c_ULTIMATE.start_main_~tree~0#1.offset|) (_ bv0 32)))))) is different from false [2021-11-23 17:14:53,494 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~tmpList~0#1.base_43| (_ BitVec 32))) (or (and (forall ((v_ArrVal_1761 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1758 (_ BitVec 32)) (v_ArrVal_1764 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1762 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1763 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1767 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (store (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~tree~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~tree~0#1.base|) .cse0 v_ArrVal_1758)) |c_ULTIMATE.start_main_#t~malloc4#1.base| v_ArrVal_1762) |v_ULTIMATE.start_main_~tmpList~0#1.base_43| v_ArrVal_1764) (select (select (store (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base|) .cse0 |c_ULTIMATE.start_main_#t~malloc4#1.base|)) |c_ULTIMATE.start_main_#t~malloc4#1.base| v_ArrVal_1761) |v_ULTIMATE.start_main_~tmpList~0#1.base_43| v_ArrVal_1763) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse0) v_ArrVal_1767)) |c_ULTIMATE.start_main_~tree~0#1.base|) |c_ULTIMATE.start_main_~tree~0#1.offset|) (_ bv0 32))) (forall ((v_ArrVal_1761 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1763 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1766 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (let ((.cse1 (store (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base|) .cse2 |c_ULTIMATE.start_main_#t~malloc4#1.base|)) |c_ULTIMATE.start_main_#t~malloc4#1.base| v_ArrVal_1761) |v_ULTIMATE.start_main_~tmpList~0#1.base_43| v_ArrVal_1763))) (store .cse1 (select (select .cse1 |c_ULTIMATE.start_main_~tree~0#1.base|) .cse2) v_ArrVal_1766))) |c_ULTIMATE.start_main_~tree~0#1.base|) |c_ULTIMATE.start_main_~tree~0#1.offset|) (_ bv0 32)))) (= |c_ULTIMATE.start_main_~tree~0#1.base| |v_ULTIMATE.start_main_~tmpList~0#1.base_43|))) is different from false [2021-11-23 17:14:56,908 INFO L354 Elim1Store]: treesize reduction 74, result has 28.2 percent of original size [2021-11-23 17:14:56,908 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 3 case distinctions, treesize of input 129 treesize of output 140 [2021-11-23 17:14:57,125 INFO L354 Elim1Store]: treesize reduction 148, result has 27.8 percent of original size [2021-11-23 17:14:57,125 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 6 case distinctions, treesize of input 140 treesize of output 142 [2021-11-23 17:14:57,132 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 17:14:57,167 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 17:14:57,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 166 treesize of output 144 [2021-11-23 17:14:57,176 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 17:14:57,191 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 17:14:57,191 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 228 treesize of output 204 [2021-11-23 17:14:57,202 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 17:14:57,216 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 17:14:57,217 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 428 treesize of output 368 [2021-11-23 17:14:57,243 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 171 treesize of output 163 [2021-11-23 17:14:57,248 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 163 treesize of output 161 [2021-11-23 17:14:57,254 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 161 treesize of output 159 [2021-11-23 17:14:57,265 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-11-23 17:14:57,265 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 159 treesize of output 131 [2021-11-23 17:14:57,271 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 131 treesize of output 123 [2021-11-23 17:14:57,358 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:14:57,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [403795388] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 17:14:57,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750532786] [2021-11-23 17:14:57,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:14:57,359 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 17:14:57,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:14:57,359 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 17:14:57,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2021-11-23 17:14:57,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:14:57,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-23 17:14:57,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:14:57,532 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 17:14:57,546 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 11 treesize of output 7 [2021-11-23 17:14:57,554 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-23 17:14:57,589 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-23 17:14:57,589 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 21 treesize of output 20 [2021-11-23 17:14:57,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:14:57,604 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 21 treesize of output 20 [2021-11-23 17:14:57,633 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 17:14:57,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2021-11-23 17:14:57,677 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-23 17:14:57,677 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 21 treesize of output 20 [2021-11-23 17:14:57,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:14:57,693 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 21 treesize of output 20 [2021-11-23 17:14:57,825 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 17:14:57,825 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2021-11-23 17:14:57,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2021-11-23 17:14:57,909 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 17:14:57,909 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 16 [2021-11-23 17:14:57,977 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 24 treesize of output 24 [2021-11-23 17:14:57,984 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 14 treesize of output 16 [2021-11-23 17:14:58,202 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 17:14:58,203 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2021-11-23 17:14:58,209 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 20 treesize of output 22 [2021-11-23 17:14:58,404 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-23 17:14:58,410 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-11-23 17:14:58,410 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 25 treesize of output 11 [2021-11-23 17:14:58,534 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:14:58,534 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 17:14:58,664 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1827 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem11#1.base| v_ArrVal_1827) |c_ULTIMATE.start_main_~tree~0#1.base|) |c_ULTIMATE.start_main_~tree~0#1.offset|) (_ bv0 32))) (forall ((v_ArrVal_1828 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem11#1.base| v_ArrVal_1828) |c_ULTIMATE.start_main_~tree~0#1.base|) |c_ULTIMATE.start_main_~tree~0#1.offset|) (_ bv0 32)))) is different from false [2021-11-23 17:14:58,686 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1828 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|)) v_ArrVal_1828) |c_ULTIMATE.start_main_~tree~0#1.base|) |c_ULTIMATE.start_main_~tree~0#1.offset|) (_ bv0 32))) (forall ((v_ArrVal_1827 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|)) v_ArrVal_1827) |c_ULTIMATE.start_main_~tree~0#1.base|) |c_ULTIMATE.start_main_~tree~0#1.offset|) (_ bv0 32)))) is different from false [2021-11-23 17:14:58,726 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1828 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1825 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1826 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~tmpList~0#1.base| v_ArrVal_1826) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tmpList~0#1.base| v_ArrVal_1825) |c_ULTIMATE.start_main_~tree~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|)) v_ArrVal_1828) |c_ULTIMATE.start_main_~tree~0#1.base|) |c_ULTIMATE.start_main_~tree~0#1.offset|) (_ bv0 32))) (forall ((v_ArrVal_1827 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1825 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tmpList~0#1.base| v_ArrVal_1825))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~tree~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|)) v_ArrVal_1827)) |c_ULTIMATE.start_main_~tree~0#1.base|) |c_ULTIMATE.start_main_~tree~0#1.offset|) (_ bv0 32)))) is different from false [2021-11-23 17:14:59,417 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~tmpList~0#1.base_43| (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~tmpList~0#1.base_43|))) (and (forall ((v_ArrVal_1764 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1763 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1823 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1824 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1767 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_1823) |v_ULTIMATE.start_main_~tmpList~0#1.base_43| v_ArrVal_1764) (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_1824) |v_ULTIMATE.start_main_~tmpList~0#1.base_43| v_ArrVal_1763) |c_ULTIMATE.start_main_~tree~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|)) v_ArrVal_1767) |c_ULTIMATE.start_main_~tree~0#1.base|) |c_ULTIMATE.start_main_~tree~0#1.offset|) (_ bv0 32))) (forall ((v_ArrVal_1763 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1824 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1766 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (let ((.cse0 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_1824) |v_ULTIMATE.start_main_~tmpList~0#1.base_43| v_ArrVal_1763))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~tree~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|)) v_ArrVal_1766)) |c_ULTIMATE.start_main_~tree~0#1.base|) |c_ULTIMATE.start_main_~tree~0#1.offset|) (_ bv0 32)))))) is different from false [2021-11-23 17:15:00,265 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-23 17:15:00,266 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 16 [2021-11-23 17:15:00,366 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~tmpList~0#1.base_43| (_ BitVec 32))) (or (= |c_ULTIMATE.start_main_~tree~0#1.base| |v_ULTIMATE.start_main_~tmpList~0#1.base_43|) (and (forall ((v_ArrVal_1764 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1763 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1819 (_ BitVec 32)) (v_ArrVal_1823 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1824 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1767 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (store (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~tree~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~tree~0#1.base|) .cse0 v_ArrVal_1819)) |c_ULTIMATE.start_main_#t~malloc4#1.base| v_ArrVal_1823) |v_ULTIMATE.start_main_~tmpList~0#1.base_43| v_ArrVal_1764) (select (select (store (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base|) .cse0 |c_ULTIMATE.start_main_#t~malloc4#1.base|)) |c_ULTIMATE.start_main_#t~malloc4#1.base| v_ArrVal_1824) |v_ULTIMATE.start_main_~tmpList~0#1.base_43| v_ArrVal_1763) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse0) v_ArrVal_1767)) |c_ULTIMATE.start_main_~tree~0#1.base|) |c_ULTIMATE.start_main_~tree~0#1.offset|) (_ bv0 32))) (forall ((v_ArrVal_1763 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1824 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1766 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (let ((.cse1 (store (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base|) .cse2 |c_ULTIMATE.start_main_#t~malloc4#1.base|)) |c_ULTIMATE.start_main_#t~malloc4#1.base| v_ArrVal_1824) |v_ULTIMATE.start_main_~tmpList~0#1.base_43| v_ArrVal_1763))) (store .cse1 (select (select .cse1 |c_ULTIMATE.start_main_~tree~0#1.base|) .cse2) v_ArrVal_1766))) |c_ULTIMATE.start_main_~tree~0#1.base|) |c_ULTIMATE.start_main_~tree~0#1.offset|) (_ bv0 32)))))) is different from false [2021-11-23 17:15:02,974 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_#t~malloc4#1.base_27| (_ BitVec 32)) (|v_ULTIMATE.start_main_~tmpList~0#1.base_43| (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc4#1.base_27|))) (= |c_ULTIMATE.start_main_~tree~0#1.base| |v_ULTIMATE.start_main_~tmpList~0#1.base_43|) (and (forall ((v_ArrVal_1815 (_ BitVec 32)) (v_ArrVal_1764 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1816 (_ BitVec 32)) (v_ArrVal_1763 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1819 (_ BitVec 32)) (v_ArrVal_1823 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1824 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1767 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (let ((.cse0 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~tree~0#1.offset|)) (.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (store (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~tree~0#1.base| (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~tree~0#1.base|) .cse0 v_ArrVal_1815) .cse1 v_ArrVal_1819)) |v_ULTIMATE.start_main_#t~malloc4#1.base_27| v_ArrVal_1823) |v_ULTIMATE.start_main_~tmpList~0#1.base_43| v_ArrVal_1764) (select (select (store (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base| (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base|) .cse0 v_ArrVal_1816) .cse1 |v_ULTIMATE.start_main_#t~malloc4#1.base_27|)) |v_ULTIMATE.start_main_#t~malloc4#1.base_27| v_ArrVal_1824) |v_ULTIMATE.start_main_~tmpList~0#1.base_43| v_ArrVal_1763) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse1) v_ArrVal_1767)) |c_ULTIMATE.start_main_~tree~0#1.base|) |c_ULTIMATE.start_main_~tree~0#1.offset|) (_ bv0 32))) (forall ((v_ArrVal_1816 (_ BitVec 32)) (v_ArrVal_1763 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1824 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1766 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (let ((.cse2 (store (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base| (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~tree~0#1.offset|) v_ArrVal_1816) .cse3 |v_ULTIMATE.start_main_#t~malloc4#1.base_27|)) |v_ULTIMATE.start_main_#t~malloc4#1.base_27| v_ArrVal_1824) |v_ULTIMATE.start_main_~tmpList~0#1.base_43| v_ArrVal_1763))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~tree~0#1.base|) .cse3) v_ArrVal_1766))) |c_ULTIMATE.start_main_~tree~0#1.base|) |c_ULTIMATE.start_main_~tree~0#1.offset|) (_ bv0 32)))))) is different from false [2021-11-23 17:15:03,444 INFO L354 Elim1Store]: treesize reduction 74, result has 28.2 percent of original size [2021-11-23 17:15:03,444 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 3 case distinctions, treesize of input 129 treesize of output 140 [2021-11-23 17:15:03,667 INFO L354 Elim1Store]: treesize reduction 148, result has 27.8 percent of original size [2021-11-23 17:15:03,667 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 6 case distinctions, treesize of input 140 treesize of output 142 [2021-11-23 17:15:03,674 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 17:15:03,690 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 17:15:03,691 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 166 treesize of output 144 [2021-11-23 17:15:03,698 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 17:15:03,712 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 17:15:03,712 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 290 treesize of output 262 [2021-11-23 17:15:03,731 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 17:15:03,742 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 17:15:03,743 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 378 treesize of output 334 [2021-11-23 17:15:03,771 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 70 treesize of output 62 [2021-11-23 17:15:03,777 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 62 treesize of output 60 [2021-11-23 17:15:03,782 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 60 treesize of output 58 [2021-11-23 17:15:03,794 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-11-23 17:15:03,795 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 58 treesize of output 48 [2021-11-23 17:15:03,799 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 48 treesize of output 46 [2021-11-23 17:15:03,834 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:15:03,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [750532786] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 17:15:03,834 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-23 17:15:03,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 16, 13, 16, 12, 15] total 54 [2021-11-23 17:15:03,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979653424] [2021-11-23 17:15:03,834 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-23 17:15:03,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2021-11-23 17:15:03,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:15:03,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-11-23 17:15:03,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=1065, Unknown=115, NotChecked=1462, Total=2862 [2021-11-23 17:15:03,837 INFO L87 Difference]: Start difference. First operand 361 states and 508 transitions. Second operand has 54 states, 54 states have (on average 2.3703703703703702) internal successors, (128), 54 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:15:06,103 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_main_~tmpList~0#1.base_41| (_ BitVec 32))) (or (and (forall ((v_ArrVal_1704 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1700 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1701 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 32) (select (select (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (let ((.cse0 (store (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base|) .cse1 |c_ULTIMATE.start_main_#t~malloc4#1.base|)) |c_ULTIMATE.start_main_#t~malloc4#1.base| v_ArrVal_1700) |v_ULTIMATE.start_main_~tmpList~0#1.base_41| v_ArrVal_1701))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~tree~0#1.base|) .cse1) v_ArrVal_1704))) |c_ULTIMATE.start_main_~tree~0#1.base|) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (forall ((v_ArrVal_1698 (_ BitVec 32)) (v_ArrVal_1699 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1702 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1703 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1700 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1701 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (store (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~tree~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~tree~0#1.base|) .cse2 v_ArrVal_1698)) |c_ULTIMATE.start_main_#t~malloc4#1.base| v_ArrVal_1699) |v_ULTIMATE.start_main_~tmpList~0#1.base_41| v_ArrVal_1702) (select (select (store (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base|) .cse2 |c_ULTIMATE.start_main_#t~malloc4#1.base|)) |c_ULTIMATE.start_main_#t~malloc4#1.base| v_ArrVal_1700) |v_ULTIMATE.start_main_~tmpList~0#1.base_41| v_ArrVal_1701) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse2) v_ArrVal_1703)) |c_ULTIMATE.start_main_~tree~0#1.base|) |c_ULTIMATE.start_main_~tree~0#1.offset|) (_ bv0 32)))) (= |c_ULTIMATE.start_main_~tree~0#1.base| |v_ULTIMATE.start_main_~tmpList~0#1.base_41|))) (= |c_ULTIMATE.start_main_~tree~0#1.offset| (_ bv0 32)) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (select |c_#valid| |c_ULTIMATE.start_main_~tree~0#1.base|)))) (_ bv1 1))) (= (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base|) |c_ULTIMATE.start_main_~tree~0#1.offset|) (_ bv0 32)) (not (= |c_ULTIMATE.start_main_~tree~0#1.base| |c_ULTIMATE.start_main_#t~malloc4#1.base|)) (forall ((|v_ULTIMATE.start_main_~tmpList~0#1.base_43| (_ BitVec 32))) (or (and (forall ((v_ArrVal_1761 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1758 (_ BitVec 32)) (v_ArrVal_1764 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1762 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1763 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1767 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (store (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~tree~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~tree~0#1.base|) .cse3 v_ArrVal_1758)) |c_ULTIMATE.start_main_#t~malloc4#1.base| v_ArrVal_1762) |v_ULTIMATE.start_main_~tmpList~0#1.base_43| v_ArrVal_1764) (select (select (store (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base|) .cse3 |c_ULTIMATE.start_main_#t~malloc4#1.base|)) |c_ULTIMATE.start_main_#t~malloc4#1.base| v_ArrVal_1761) |v_ULTIMATE.start_main_~tmpList~0#1.base_43| v_ArrVal_1763) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse3) v_ArrVal_1767)) |c_ULTIMATE.start_main_~tree~0#1.base|) |c_ULTIMATE.start_main_~tree~0#1.offset|) (_ bv0 32))) (forall ((v_ArrVal_1761 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1763 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1766 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (let ((.cse5 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (let ((.cse4 (store (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base|) .cse5 |c_ULTIMATE.start_main_#t~malloc4#1.base|)) |c_ULTIMATE.start_main_#t~malloc4#1.base| v_ArrVal_1761) |v_ULTIMATE.start_main_~tmpList~0#1.base_43| v_ArrVal_1763))) (store .cse4 (select (select .cse4 |c_ULTIMATE.start_main_~tree~0#1.base|) .cse5) v_ArrVal_1766))) |c_ULTIMATE.start_main_~tree~0#1.base|) |c_ULTIMATE.start_main_~tree~0#1.offset|) (_ bv0 32)))) (= |c_ULTIMATE.start_main_~tree~0#1.base| |v_ULTIMATE.start_main_~tmpList~0#1.base_43|))) (= (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~tree~0#1.base|) |c_ULTIMATE.start_main_~tree~0#1.offset|) (_ bv0 32)) (forall ((|v_ULTIMATE.start_main_~tmpList~0#1.base_43| (_ BitVec 32))) (or (= |c_ULTIMATE.start_main_~tree~0#1.base| |v_ULTIMATE.start_main_~tmpList~0#1.base_43|) (and (forall ((v_ArrVal_1764 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1763 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1819 (_ BitVec 32)) (v_ArrVal_1823 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1824 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1767 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (let ((.cse6 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (store (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~tree~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~tree~0#1.base|) .cse6 v_ArrVal_1819)) |c_ULTIMATE.start_main_#t~malloc4#1.base| v_ArrVal_1823) |v_ULTIMATE.start_main_~tmpList~0#1.base_43| v_ArrVal_1764) (select (select (store (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base|) .cse6 |c_ULTIMATE.start_main_#t~malloc4#1.base|)) |c_ULTIMATE.start_main_#t~malloc4#1.base| v_ArrVal_1824) |v_ULTIMATE.start_main_~tmpList~0#1.base_43| v_ArrVal_1763) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse6) v_ArrVal_1767)) |c_ULTIMATE.start_main_~tree~0#1.base|) |c_ULTIMATE.start_main_~tree~0#1.offset|) (_ bv0 32))) (forall ((v_ArrVal_1763 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1824 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1766 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (let ((.cse8 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (let ((.cse7 (store (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base|) .cse8 |c_ULTIMATE.start_main_#t~malloc4#1.base|)) |c_ULTIMATE.start_main_#t~malloc4#1.base| v_ArrVal_1824) |v_ULTIMATE.start_main_~tmpList~0#1.base_43| v_ArrVal_1763))) (store .cse7 (select (select .cse7 |c_ULTIMATE.start_main_~tree~0#1.base|) .cse8) v_ArrVal_1766))) |c_ULTIMATE.start_main_~tree~0#1.base|) |c_ULTIMATE.start_main_~tree~0#1.offset|) (_ bv0 32))))))) is different from false [2021-11-23 17:15:08,146 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base|))) (and (= |c_ULTIMATE.start_main_~tree~0#1.offset| (_ bv0 32)) (not (= (select .cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|)) |c_ULTIMATE.start_main_~tree~0#1.base|)) (forall ((|v_ULTIMATE.start_main_~tmpList~0#1.base_43| (_ BitVec 32))) (or (= |c_ULTIMATE.start_main_~tree~0#1.base| |v_ULTIMATE.start_main_~tmpList~0#1.base_43|) (and (forall ((v_ArrVal_1761 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1763 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1766 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (let ((.cse1 (store (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base|) .cse2) v_ArrVal_1761) |v_ULTIMATE.start_main_~tmpList~0#1.base_43| v_ArrVal_1763))) (store .cse1 (select (select .cse1 |c_ULTIMATE.start_main_~tree~0#1.base|) .cse2) v_ArrVal_1766))) |c_ULTIMATE.start_main_~tree~0#1.base|) |c_ULTIMATE.start_main_~tree~0#1.offset|) (_ bv0 32))) (forall ((v_ArrVal_1761 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1764 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1762 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1763 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1767 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (let ((.cse4 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (let ((.cse3 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base|) .cse4))) (store (store (store |c_#memory_$Pointer$.offset| .cse3 v_ArrVal_1762) |v_ULTIMATE.start_main_~tmpList~0#1.base_43| v_ArrVal_1764) (select (select (store (store |c_#memory_$Pointer$.base| .cse3 v_ArrVal_1761) |v_ULTIMATE.start_main_~tmpList~0#1.base_43| v_ArrVal_1763) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse4) v_ArrVal_1767))) |c_ULTIMATE.start_main_~tree~0#1.base|) |c_ULTIMATE.start_main_~tree~0#1.offset|) (_ bv0 32)))))) (= (select .cse0 |c_ULTIMATE.start_main_~tree~0#1.offset|) (_ bv0 32)) (= (_ bv0 1) (bvadd (bvneg (bvneg (select |c_#valid| |c_ULTIMATE.start_main_~tree~0#1.base|))) (_ bv1 1))) (= (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~tree~0#1.base|) |c_ULTIMATE.start_main_~tree~0#1.offset|) (_ bv0 32)))) is different from false [2021-11-23 17:15:08,322 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base|))) (let ((.cse0 (select .cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|)))) (and (= |c_ULTIMATE.start_main_~tree~0#1.offset| (_ bv0 32)) (not (= .cse0 |c_ULTIMATE.start_main_~tree~0#1.base|)) (= (select .cse1 |c_ULTIMATE.start_main_~tree~0#1.offset|) (_ bv0 32)) (= |c_ULTIMATE.start_main_#t~mem5#1.base| .cse0) (= (_ bv0 1) (bvadd (bvneg (bvneg (select |c_#valid| |c_ULTIMATE.start_main_~tree~0#1.base|))) (_ bv1 1))) (= (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~tree~0#1.base|) |c_ULTIMATE.start_main_~tree~0#1.offset|) (_ bv0 32)) (forall ((|v_ULTIMATE.start_main_~tmpList~0#1.base_43| (_ BitVec 32))) (or (and (forall ((v_ArrVal_1761 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1763 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1766 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 32) (select (select (let ((.cse2 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_1761) |v_ULTIMATE.start_main_~tmpList~0#1.base_43| v_ArrVal_1763))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~tree~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|)) v_ArrVal_1766)) |c_ULTIMATE.start_main_~tree~0#1.base|) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (forall ((v_ArrVal_1761 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1764 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1762 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1763 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1767 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 32) (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_1762) |v_ULTIMATE.start_main_~tmpList~0#1.base_43| v_ArrVal_1764) (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_1761) |v_ULTIMATE.start_main_~tmpList~0#1.base_43| v_ArrVal_1763) |c_ULTIMATE.start_main_~tree~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|)) v_ArrVal_1767) |c_ULTIMATE.start_main_~tree~0#1.base|) |c_ULTIMATE.start_main_~tree~0#1.offset|)))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~tmpList~0#1.base_43|))))) (forall ((|v_ULTIMATE.start_main_~tmpList~0#1.base_43| (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~tmpList~0#1.base_43|))) (and (forall ((v_ArrVal_1764 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1763 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1823 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1824 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1767 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_1823) |v_ULTIMATE.start_main_~tmpList~0#1.base_43| v_ArrVal_1764) (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_1824) |v_ULTIMATE.start_main_~tmpList~0#1.base_43| v_ArrVal_1763) |c_ULTIMATE.start_main_~tree~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|)) v_ArrVal_1767) |c_ULTIMATE.start_main_~tree~0#1.base|) |c_ULTIMATE.start_main_~tree~0#1.offset|) (_ bv0 32))) (forall ((v_ArrVal_1763 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1824 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1766 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (let ((.cse3 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_1824) |v_ULTIMATE.start_main_~tmpList~0#1.base_43| v_ArrVal_1763))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~tree~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|)) v_ArrVal_1766)) |c_ULTIMATE.start_main_~tree~0#1.base|) |c_ULTIMATE.start_main_~tree~0#1.offset|) (_ bv0 32))))))))) is different from false [2021-11-23 17:15:10,435 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base|))) (and (= |c_ULTIMATE.start_main_~tree~0#1.offset| (_ bv0 32)) (not (= (select .cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|)) |c_ULTIMATE.start_main_~tree~0#1.base|)) (= (select .cse0 |c_ULTIMATE.start_main_~tree~0#1.offset|) (_ bv0 32)) (forall ((|v_ULTIMATE.start_main_~tmpList~0#1.base_41| (_ BitVec 32))) (or (and (forall ((v_ArrVal_1702 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1703 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1701 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~tmpList~0#1.base_41| v_ArrVal_1702) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~tmpList~0#1.base_41| v_ArrVal_1701) |c_ULTIMATE.start_main_~tree~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|)) v_ArrVal_1703) |c_ULTIMATE.start_main_~tree~0#1.base|) |c_ULTIMATE.start_main_~tree~0#1.offset|) (_ bv0 32))) (forall ((v_ArrVal_1704 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1701 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (let ((.cse1 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~tmpList~0#1.base_41| v_ArrVal_1701))) (store .cse1 (select (select .cse1 |c_ULTIMATE.start_main_~tree~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|)) v_ArrVal_1704)) |c_ULTIMATE.start_main_~tree~0#1.base|) |c_ULTIMATE.start_main_~tree~0#1.offset|) (_ bv0 32)))) (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~tmpList~0#1.base_41|)))))) (= (_ bv0 1) (bvadd (bvneg (bvneg (select |c_#valid| |c_ULTIMATE.start_main_~tree~0#1.base|))) (_ bv1 1))) (= (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~tree~0#1.base|) |c_ULTIMATE.start_main_~tree~0#1.offset|) (_ bv0 32)))) is different from false [2021-11-23 17:15:19,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:15:19,194 INFO L93 Difference]: Finished difference Result 814 states and 1065 transitions. [2021-11-23 17:15:19,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-23 17:15:19,195 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.3703703703703702) internal successors, (128), 54 states have internal predecessors, (128), 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 32 [2021-11-23 17:15:19,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:15:19,199 INFO L225 Difference]: With dead ends: 814 [2021-11-23 17:15:19,199 INFO L226 Difference]: Without dead ends: 814 [2021-11-23 17:15:19,201 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 130 SyntacticMatches, 9 SemanticMatches, 69 ConstructedPredicates, 21 IntricatePredicates, 0 DeprecatedPredicates, 782 ImplicationChecksByTransitivity, 19.6s TimeCoverageRelationStatistics Valid=367, Invalid=2046, Unknown=121, NotChecked=2436, Total=4970 [2021-11-23 17:15:19,201 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 520 mSDsluCounter, 4234 mSDsCounter, 0 mSdLazyCounter, 1947 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 520 SdHoareTripleChecker+Valid, 4434 SdHoareTripleChecker+Invalid, 10031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1947 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 8039 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2021-11-23 17:15:19,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [520 Valid, 4434 Invalid, 10031 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1947 Invalid, 0 Unknown, 8039 Unchecked, 6.5s Time] [2021-11-23 17:15:19,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2021-11-23 17:15:19,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 446. [2021-11-23 17:15:19,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 401 states have (on average 1.6034912718204488) internal successors, (643), 445 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:15:19,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 643 transitions. [2021-11-23 17:15:19,213 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 643 transitions. Word has length 32 [2021-11-23 17:15:19,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:15:19,214 INFO L470 AbstractCegarLoop]: Abstraction has 446 states and 643 transitions. [2021-11-23 17:15:19,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.3703703703703702) internal successors, (128), 54 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:15:19,214 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 643 transitions. [2021-11-23 17:15:19,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-23 17:15:19,215 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:15:19,215 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:15:19,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (46)] Forceful destruction successful, exit code 0 [2021-11-23 17:15:19,436 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2021-11-23 17:15:19,652 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2021-11-23 17:15:19,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt,45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3,47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 17:15:19,828 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 100 more)] === [2021-11-23 17:15:19,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:15:19,828 INFO L85 PathProgramCache]: Analyzing trace with hash 839131428, now seen corresponding path program 1 times [2021-11-23 17:15:19,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:15:19,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [997622372] [2021-11-23 17:15:19,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:15:19,829 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:15:19,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:15:19,830 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:15:19,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2021-11-23 17:15:20,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:15:20,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-23 17:15:20,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:15:20,097 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 6 treesize of output 5 [2021-11-23 17:15:20,117 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-23 17:15:20,126 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-23 17:15:20,182 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-23 17:15:20,182 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2021-11-23 17:15:20,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:15:20,193 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 21 treesize of output 20 [2021-11-23 17:15:20,223 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 17:15:20,223 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2021-11-23 17:15:20,297 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-23 17:15:20,298 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 21 treesize of output 20 [2021-11-23 17:15:20,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:15:20,310 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 21 treesize of output 20 [2021-11-23 17:15:20,521 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 17:15:20,521 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2021-11-23 17:15:20,528 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 20 treesize of output 22 [2021-11-23 17:15:20,591 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 17:15:20,591 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2021-11-23 17:15:20,718 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 14 treesize of output 16 [2021-11-23 17:15:20,731 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 24 treesize of output 24 [2021-11-23 17:15:20,887 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 17:15:20,887 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2021-11-23 17:15:20,894 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 20 treesize of output 22 [2021-11-23 17:15:21,092 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-23 17:15:21,098 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-11-23 17:15:21,098 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 25 treesize of output 11 [2021-11-23 17:15:21,203 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:15:21,203 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 17:15:21,390 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1890 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem11#1.base| v_ArrVal_1890) |c_ULTIMATE.start_main_~tree~0#1.base|) |c_ULTIMATE.start_main_~tree~0#1.offset|) (_ bv0 32))) (forall ((v_ArrVal_1889 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem11#1.base| v_ArrVal_1889) |c_ULTIMATE.start_main_~tree~0#1.base|) |c_ULTIMATE.start_main_~tree~0#1.offset|) (_ bv0 32)))) is different from false [2021-11-23 17:15:21,412 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1889 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|)) v_ArrVal_1889) |c_ULTIMATE.start_main_~tree~0#1.base|) |c_ULTIMATE.start_main_~tree~0#1.offset|) (_ bv0 32))) (forall ((v_ArrVal_1890 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 32) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|)) v_ArrVal_1890) |c_ULTIMATE.start_main_~tree~0#1.base|) |c_ULTIMATE.start_main_~tree~0#1.offset|)))) is different from false [2021-11-23 17:15:21,454 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1886 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1889 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1887 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~tmpList~0#1.base| v_ArrVal_1886) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tmpList~0#1.base| v_ArrVal_1887) |c_ULTIMATE.start_main_~tree~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|)) v_ArrVal_1889) |c_ULTIMATE.start_main_~tree~0#1.base|) |c_ULTIMATE.start_main_~tree~0#1.offset|) (_ bv0 32))) (forall ((v_ArrVal_1890 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1887 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tmpList~0#1.base| v_ArrVal_1887))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~tree~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|)) v_ArrVal_1890)) |c_ULTIMATE.start_main_~tree~0#1.base|) |c_ULTIMATE.start_main_~tree~0#1.offset|) (_ bv0 32)))) is different from false [2021-11-23 17:15:21,586 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~tmpList~0#1.base_47| (_ BitVec 32))) (or (and (forall ((v_ArrVal_1886 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1889 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1887 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~tmpList~0#1.base_47| v_ArrVal_1886) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~tmpList~0#1.base_47| v_ArrVal_1887) |c_ULTIMATE.start_main_~tree~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|)) v_ArrVal_1889) |c_ULTIMATE.start_main_~tree~0#1.base|) |c_ULTIMATE.start_main_~tree~0#1.offset|) (_ bv0 32))) (forall ((v_ArrVal_1890 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1887 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 32) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~tmpList~0#1.base_47| v_ArrVal_1887))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~tree~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|)) v_ArrVal_1890)) |c_ULTIMATE.start_main_~tree~0#1.base|) |c_ULTIMATE.start_main_~tree~0#1.offset|)))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~tmpList~0#1.base_47|))))) is different from false [2021-11-23 17:15:21,742 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~tmpList~0#1.base_47| (_ BitVec 32))) (or (and (forall ((v_ArrVal_1890 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1884 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1887 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (let ((.cse0 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_1884) |v_ULTIMATE.start_main_~tmpList~0#1.base_47| v_ArrVal_1887))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~tree~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|)) v_ArrVal_1890)) |c_ULTIMATE.start_main_~tree~0#1.base|) |c_ULTIMATE.start_main_~tree~0#1.offset|) (_ bv0 32))) (forall ((v_ArrVal_1885 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1886 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1884 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1889 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1887 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_1885) |v_ULTIMATE.start_main_~tmpList~0#1.base_47| v_ArrVal_1886) (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_1884) |v_ULTIMATE.start_main_~tmpList~0#1.base_47| v_ArrVal_1887) |c_ULTIMATE.start_main_~tree~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|)) v_ArrVal_1889) |c_ULTIMATE.start_main_~tree~0#1.base|) |c_ULTIMATE.start_main_~tree~0#1.offset|) (_ bv0 32)))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~tmpList~0#1.base_47|))))) is different from false [2021-11-23 17:15:22,172 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-23 17:15:22,173 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 16 [2021-11-23 17:15:22,290 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~tmpList~0#1.base_47| (_ BitVec 32))) (or (and (forall ((v_ArrVal_1890 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1884 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1887 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (let ((.cse0 (store (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base|) .cse1 |c_ULTIMATE.start_main_#t~malloc4#1.base|)) |c_ULTIMATE.start_main_#t~malloc4#1.base| v_ArrVal_1884) |v_ULTIMATE.start_main_~tmpList~0#1.base_47| v_ArrVal_1887))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~tree~0#1.base|) .cse1) v_ArrVal_1890))) |c_ULTIMATE.start_main_~tree~0#1.base|) |c_ULTIMATE.start_main_~tree~0#1.offset|) (_ bv0 32))) (forall ((v_ArrVal_1885 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1886 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1884 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1889 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1887 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1881 (_ BitVec 32))) (= (select (select (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (store (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~tree~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~tree~0#1.base|) .cse2 v_ArrVal_1881)) |c_ULTIMATE.start_main_#t~malloc4#1.base| v_ArrVal_1885) |v_ULTIMATE.start_main_~tmpList~0#1.base_47| v_ArrVal_1886) (select (select (store (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base|) .cse2 |c_ULTIMATE.start_main_#t~malloc4#1.base|)) |c_ULTIMATE.start_main_#t~malloc4#1.base| v_ArrVal_1884) |v_ULTIMATE.start_main_~tmpList~0#1.base_47| v_ArrVal_1887) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse2) v_ArrVal_1889)) |c_ULTIMATE.start_main_~tree~0#1.base|) |c_ULTIMATE.start_main_~tree~0#1.offset|) (_ bv0 32)))) (= |c_ULTIMATE.start_main_~tree~0#1.base| |v_ULTIMATE.start_main_~tmpList~0#1.base_47|))) is different from false [2021-11-23 17:15:23,587 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_#t~malloc4#1.base_30| (_ BitVec 32)) (|v_ULTIMATE.start_main_~tmpList~0#1.base_47| (_ BitVec 32))) (or (= |c_ULTIMATE.start_main_~tree~0#1.base| |v_ULTIMATE.start_main_~tmpList~0#1.base_47|) (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc4#1.base_30|)))) (and (forall ((v_ArrVal_1877 (_ BitVec 32)) (v_ArrVal_1878 (_ BitVec 32)) (v_ArrVal_1885 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1886 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1884 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1889 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1887 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1881 (_ BitVec 32))) (= (select (select (let ((.cse0 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~tree~0#1.offset|)) (.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (store (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~tree~0#1.base| (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~tree~0#1.base|) .cse0 v_ArrVal_1877) .cse1 v_ArrVal_1881)) |v_ULTIMATE.start_main_#t~malloc4#1.base_30| v_ArrVal_1885) |v_ULTIMATE.start_main_~tmpList~0#1.base_47| v_ArrVal_1886) (select (select (store (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base| (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base|) .cse0 v_ArrVal_1878) .cse1 |v_ULTIMATE.start_main_#t~malloc4#1.base_30|)) |v_ULTIMATE.start_main_#t~malloc4#1.base_30| v_ArrVal_1884) |v_ULTIMATE.start_main_~tmpList~0#1.base_47| v_ArrVal_1887) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse1) v_ArrVal_1889)) |c_ULTIMATE.start_main_~tree~0#1.base|) |c_ULTIMATE.start_main_~tree~0#1.offset|) (_ bv0 32))) (forall ((v_ArrVal_1890 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1878 (_ BitVec 32)) (v_ArrVal_1884 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1887 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (let ((.cse2 (store (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base| (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~tree~0#1.offset|) v_ArrVal_1878) .cse3 |v_ULTIMATE.start_main_#t~malloc4#1.base_30|)) |v_ULTIMATE.start_main_#t~malloc4#1.base_30| v_ArrVal_1884) |v_ULTIMATE.start_main_~tmpList~0#1.base_47| v_ArrVal_1887))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~tree~0#1.base|) .cse3) v_ArrVal_1890))) |c_ULTIMATE.start_main_~tree~0#1.base|) |c_ULTIMATE.start_main_~tree~0#1.offset|) (_ bv0 32)))))) is different from false [2021-11-23 17:15:24,075 INFO L354 Elim1Store]: treesize reduction 74, result has 28.2 percent of original size [2021-11-23 17:15:24,075 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 3 case distinctions, treesize of input 129 treesize of output 140 [2021-11-23 17:15:24,331 INFO L354 Elim1Store]: treesize reduction 148, result has 27.8 percent of original size [2021-11-23 17:15:24,332 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 6 case distinctions, treesize of input 140 treesize of output 142 [2021-11-23 17:15:24,338 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 17:15:24,354 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 17:15:24,354 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 166 treesize of output 144 [2021-11-23 17:15:24,362 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 17:15:24,377 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 17:15:24,377 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 228 treesize of output 204 [2021-11-23 17:15:24,386 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 17:15:24,400 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 17:15:24,400 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 428 treesize of output 368 [2021-11-23 17:15:24,427 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 166 treesize of output 158 [2021-11-23 17:15:24,432 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 158 treesize of output 156 [2021-11-23 17:15:24,437 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 156 treesize of output 154 [2021-11-23 17:15:24,448 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-11-23 17:15:24,448 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 154 treesize of output 126 [2021-11-23 17:15:24,453 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 126 treesize of output 118 [2021-11-23 17:15:24,531 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-11-23 17:15:24,531 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:15:24,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [997622372] [2021-11-23 17:15:24,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [997622372] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 17:15:24,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [360919375] [2021-11-23 17:15:24,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:15:24,532 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 17:15:24,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/cvc4 [2021-11-23 17:15:24,533 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 17:15:24,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (49)] Waiting until timeout for monitored process [2021-11-23 17:15:24,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:15:24,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 42 conjunts are in the unsatisfiable core [2021-11-23 17:15:24,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:15:24,986 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-23 17:15:24,987 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 19 [2021-11-23 17:15:25,088 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 17:15:25,103 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 17:15:25,234 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-11-23 17:15:25,234 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 24 [2021-11-23 17:15:25,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:15:25,377 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 23 treesize of output 22 [2021-11-23 17:15:25,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:15:25,392 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-23 17:15:25,785 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 17:15:25,785 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 51 [2021-11-23 17:15:25,803 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 31 treesize of output 31 [2021-11-23 17:15:26,078 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 17:15:26,079 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 21 treesize of output 28 [2021-11-23 17:15:26,408 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 36 treesize of output 34 [2021-11-23 17:15:26,433 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 25 treesize of output 25 [2021-11-23 17:15:26,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:15:26,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:15:26,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:15:26,815 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 52 [2021-11-23 17:15:26,822 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 73 [2021-11-23 17:15:27,641 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 17:15:27,642 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 40 [2021-11-23 17:15:28,089 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:15:28,089 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:15:28,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [360919375] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:15:28,089 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-23 17:15:28,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [13, 16] total 37 [2021-11-23 17:15:28,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646305567] [2021-11-23 17:15:28,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:15:28,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-23 17:15:28,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:15:28,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-23 17:15:28,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=768, Unknown=14, NotChecked=434, Total=1332 [2021-11-23 17:15:28,092 INFO L87 Difference]: Start difference. First operand 446 states and 643 transitions. Second operand has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 14 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:15:31,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:15:31,096 INFO L93 Difference]: Finished difference Result 838 states and 1154 transitions. [2021-11-23 17:15:31,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-23 17:15:31,097 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 14 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-11-23 17:15:31,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:15:31,100 INFO L225 Difference]: With dead ends: 838 [2021-11-23 17:15:31,100 INFO L226 Difference]: Without dead ends: 838 [2021-11-23 17:15:31,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=194, Invalid=1226, Unknown=14, NotChecked=546, Total=1980 [2021-11-23 17:15:31,102 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 402 mSDsluCounter, 861 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 978 SdHoareTripleChecker+Invalid, 940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 398 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-23 17:15:31,102 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [402 Valid, 978 Invalid, 940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 506 Invalid, 0 Unknown, 398 Unchecked, 1.9s Time] [2021-11-23 17:15:31,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2021-11-23 17:15:31,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 459. [2021-11-23 17:15:31,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 414 states have (on average 1.5942028985507246) internal successors, (660), 458 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:15:31,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 660 transitions. [2021-11-23 17:15:31,113 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 660 transitions. Word has length 32 [2021-11-23 17:15:31,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:15:31,113 INFO L470 AbstractCegarLoop]: Abstraction has 459 states and 660 transitions. [2021-11-23 17:15:31,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 14 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:15:31,113 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 660 transitions. [2021-11-23 17:15:31,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-23 17:15:31,114 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:15:31,114 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:15:31,139 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (48)] Forceful destruction successful, exit code 0 [2021-11-23 17:15:31,330 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (49)] Ended with exit code 0 [2021-11-23 17:15:31,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3,49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt [2021-11-23 17:15:31,530 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr101ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 100 more)] === [2021-11-23 17:15:31,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:15:31,530 INFO L85 PathProgramCache]: Analyzing trace with hash 681831259, now seen corresponding path program 1 times [2021-11-23 17:15:31,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:15:31,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1530041833] [2021-11-23 17:15:31,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:15:31,531 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:15:31,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:15:31,531 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:15:31,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2021-11-23 17:15:31,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:15:31,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 17:15:31,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:15:31,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:15:31,990 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:15:31,990 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:15:31,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1530041833] [2021-11-23 17:15:31,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1530041833] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:15:31,991 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:15:31,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 17:15:31,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556904775] [2021-11-23 17:15:31,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:15:31,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 17:15:31,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:15:31,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 17:15:31,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 17:15:31,992 INFO L87 Difference]: Start difference. First operand 459 states and 660 transitions. Second operand has 5 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:15:32,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:15:32,750 INFO L93 Difference]: Finished difference Result 613 states and 793 transitions. [2021-11-23 17:15:32,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 17:15:32,752 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-11-23 17:15:32,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:15:32,755 INFO L225 Difference]: With dead ends: 613 [2021-11-23 17:15:32,755 INFO L226 Difference]: Without dead ends: 613 [2021-11-23 17:15:32,755 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-23 17:15:32,756 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 603 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 603 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-23 17:15:32,756 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [603 Valid, 308 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-23 17:15:32,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2021-11-23 17:15:32,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 481. [2021-11-23 17:15:32,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 436 states have (on average 1.6077981651376148) internal successors, (701), 480 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:15:32,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 701 transitions. [2021-11-23 17:15:32,764 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 701 transitions. Word has length 32 [2021-11-23 17:15:32,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:15:32,765 INFO L470 AbstractCegarLoop]: Abstraction has 481 states and 701 transitions. [2021-11-23 17:15:32,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:15:32,765 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 701 transitions. [2021-11-23 17:15:32,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-23 17:15:32,766 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:15:32,766 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:15:32,782 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2021-11-23 17:15:32,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:15:32,979 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 100 more)] === [2021-11-23 17:15:32,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:15:32,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1883078045, now seen corresponding path program 1 times [2021-11-23 17:15:32,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:15:32,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1821683465] [2021-11-23 17:15:32,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:15:32,980 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:15:32,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:15:32,981 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:15:32,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2021-11-23 17:15:33,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:15:33,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-23 17:15:33,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:15:33,233 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 6 treesize of output 5 [2021-11-23 17:15:33,288 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 17:15:33,288 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2021-11-23 17:15:33,326 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 17:15:33,338 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 17:15:33,405 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 20 treesize of output 8 [2021-11-23 17:15:33,463 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-11-23 17:15:33,538 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 17:15:33,538 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 1 case distinctions, treesize of input 17 treesize of output 17 [2021-11-23 17:15:33,623 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 16 treesize of output 18 [2021-11-23 17:15:33,657 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-23 17:15:33,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:15:33,742 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-11-23 17:15:34,400 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 17:15:34,400 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 30 [2021-11-23 17:15:34,446 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:15:34,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 17:15:34,930 INFO L354 Elim1Store]: treesize reduction 5, result has 77.3 percent of original size [2021-11-23 17:15:34,931 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 38 treesize of output 37 [2021-11-23 17:15:35,056 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-11-23 17:15:35,056 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 107 treesize of output 73 [2021-11-23 17:15:35,499 WARN L838 $PredicateComparison]: unable to prove that (or (forall ((|v_ULTIMATE.start_main_~tmpList~0#1.base_49| (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~tmpList~0#1.base_49|)))))) (= (_ bv0 32) |v_ULTIMATE.start_main_~tmpList~0#1.base_49|) (= |c_ULTIMATE.start_main_~tree~0#1.base| |v_ULTIMATE.start_main_~tmpList~0#1.base_49|))) (forall ((v_ArrVal_2026 (Array (_ BitVec 32) (_ BitVec 32)))) (not (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (= .cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_2026) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse0)))))) is different from false [2021-11-23 17:15:35,553 WARN L838 $PredicateComparison]: unable to prove that (or (forall ((|v_ULTIMATE.start_main_~tmpList~0#1.base_49| (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~tmpList~0#1.base_49|)))))) (= (_ bv0 32) |v_ULTIMATE.start_main_~tmpList~0#1.base_49|) (= |c_ULTIMATE.start_main_~tree~0#1.base| |v_ULTIMATE.start_main_~tmpList~0#1.base_49|))) (forall ((v_ArrVal_2026 (Array (_ BitVec 32) (_ BitVec 32)))) (not (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (= .cse0 (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base|) .cse0) v_ArrVal_2026) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse0)))))) is different from false [2021-11-23 17:15:35,590 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 0 case distinctions, treesize of input 20 treesize of output 16 [2021-11-23 17:15:35,604 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 17:15:35,604 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 25 treesize of output 26 [2021-11-23 17:15:35,607 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 43 treesize of output 31 [2021-11-23 17:15:35,626 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 6 [2021-11-23 17:15:35,941 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:15:35,941 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:15:35,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1821683465] [2021-11-23 17:15:35,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1821683465] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 17:15:35,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1692732012] [2021-11-23 17:15:35,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:15:35,942 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 17:15:35,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/cvc4 [2021-11-23 17:15:35,943 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 17:15:35,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (52)] Waiting until timeout for monitored process [2021-11-23 17:15:36,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:15:36,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-23 17:15:36,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:15:36,480 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-23 17:15:36,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 21 [2021-11-23 17:15:36,735 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-11-23 17:15:36,736 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 25 treesize of output 27 [2021-11-23 17:15:36,880 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 17:15:37,242 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 17:15:37,243 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 34 [2021-11-23 17:15:37,409 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 17:15:37,409 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2021-11-23 17:15:37,576 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 27 treesize of output 27 [2021-11-23 17:15:37,790 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 17:15:37,790 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 46 [2021-11-23 17:15:38,268 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 20 [2021-11-23 17:15:38,368 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:15:38,369 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 17:15:38,599 INFO L354 Elim1Store]: treesize reduction 5, result has 70.6 percent of original size [2021-11-23 17:15:38,599 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 30 [2021-11-23 17:15:38,611 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2077 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_#t~mem11#1.base| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem11#1.base| v_ArrVal_2077) |c_ULTIMATE.start_main_~tree~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|)))) is different from false [2021-11-23 17:15:38,625 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2077 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base|) .cse1))) (= .cse0 (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_2077) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse1))))) is different from false [2021-11-23 17:15:38,647 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2076 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2077 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tmpList~0#1.base| v_ArrVal_2076)) (.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~tree~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_2077) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse2))))) is different from false [2021-11-23 17:15:38,697 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~tmpList~0#1.base_51| (_ BitVec 32))) (or (forall ((v_ArrVal_2076 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2077 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~tmpList~0#1.base_51| v_ArrVal_2076)) (.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~tree~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_2077) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse2))))) (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~tmpList~0#1.base_51|)))))) is different from false [2021-11-23 17:15:38,747 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2075 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2076 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2077 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~tmpList~0#1.base_51| (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~tmpList~0#1.base_51|)))) (let ((.cse1 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_2075) |v_ULTIMATE.start_main_~tmpList~0#1.base_51| v_ArrVal_2076)) (.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~tree~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_2077) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse2)))))) is different from false [2021-11-23 17:15:38,805 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-23 17:15:38,805 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 18 treesize of output 17 [2021-11-23 17:15:38,834 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2075 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2076 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2077 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~tmpList~0#1.base_51| (_ BitVec 32))) (or (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (let ((.cse1 (store (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base|) .cse2) v_ArrVal_2075) |v_ULTIMATE.start_main_~tmpList~0#1.base_51| v_ArrVal_2076))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~tree~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_2077) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse2))))) (= |c_ULTIMATE.start_main_~tree~0#1.base| |v_ULTIMATE.start_main_~tmpList~0#1.base_51|))) is different from false [2021-11-23 17:15:38,879 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 17:15:38,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 53 [2021-11-23 17:15:38,882 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 17:15:38,885 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 244 treesize of output 190 [2021-11-23 17:15:38,894 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 141 treesize of output 125 [2021-11-23 17:15:38,898 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 125 treesize of output 93 [2021-11-23 17:15:39,152 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-11-23 17:15:39,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1692732012] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 17:15:39,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097629901] [2021-11-23 17:15:39,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:15:39,152 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 17:15:39,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:15:39,153 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 17:15:39,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2021-11-23 17:15:39,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:15:39,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-23 17:15:39,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:15:39,346 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 6 treesize of output 5 [2021-11-23 17:15:39,387 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 17:15:39,387 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2021-11-23 17:15:39,505 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 17:15:39,834 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 17:15:39,834 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 26 [2021-11-23 17:15:39,876 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 17:15:39,876 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2021-11-23 17:15:40,312 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 35 [2021-11-23 17:15:40,642 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 17:15:40,642 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 55 [2021-11-23 17:15:41,085 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 34 treesize of output 22 [2021-11-23 17:15:41,128 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:15:41,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 17:15:41,816 INFO L354 Elim1Store]: treesize reduction 27, result has 68.2 percent of original size [2021-11-23 17:15:41,817 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 66 treesize of output 87 [2021-11-23 17:15:41,847 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2125 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2126 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tmpList~0#1.base| v_ArrVal_2125)) (.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~tree~0#1.base|) .cse3))) (let ((.cse0 (select (select (store .cse2 .cse1 v_ArrVal_2126) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse3))) (or (= .cse0 |c_ULTIMATE.start_main_#t~mem9#1.base|) (= .cse0 .cse1)))))) is different from false [2021-11-23 17:15:41,872 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2125 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2126 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tmpList~0#1.base| v_ArrVal_2125)) (.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~tree~0#1.base|) .cse1))) (let ((.cse0 (select (select (store .cse3 .cse2 v_ArrVal_2126) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse1))) (or (= .cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base|) .cse1)) (= .cse0 .cse2)))))) is different from false [2021-11-23 17:15:48,570 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2124 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~tmpList~0#1.base_53| (_ BitVec 32)) (v_ArrVal_2125 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2126 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_2124))) (let ((.cse4 (store .cse1 |v_ULTIMATE.start_main_~tmpList~0#1.base_53| v_ArrVal_2125)) (.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (let ((.cse3 (select (select .cse4 |c_ULTIMATE.start_main_~tree~0#1.base|) .cse2))) (let ((.cse0 (select (select (store .cse4 .cse3 v_ArrVal_2126) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse2))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~tmpList~0#1.base_53|)))) (= .cse0 (select (select .cse1 |c_ULTIMATE.start_main_~tree~0#1.base|) .cse2)) (= .cse3 .cse0))))))) is different from false [2021-11-23 17:15:48,649 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2124 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~tmpList~0#1.base_53| (_ BitVec 32)) (v_ArrVal_2125 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2126 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (let ((.cse2 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base|) .cse3) v_ArrVal_2124))) (let ((.cse4 (store .cse2 |v_ULTIMATE.start_main_~tmpList~0#1.base_53| v_ArrVal_2125))) (let ((.cse1 (select (select .cse4 |c_ULTIMATE.start_main_~tree~0#1.base|) .cse3))) (let ((.cse0 (select (select (store .cse4 .cse1 v_ArrVal_2126) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse3))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~tmpList~0#1.base_53|)))) (= .cse0 .cse1) (= (select (select .cse2 |c_ULTIMATE.start_main_~tree~0#1.base|) .cse3) .cse0)))))))) is different from false [2021-11-23 17:15:48,706 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 17:15:48,706 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 142 treesize of output 92 [2021-11-23 17:15:48,711 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 17:15:48,715 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 571 treesize of output 445 [2021-11-23 17:15:48,742 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 138 treesize of output 98 [2021-11-23 17:15:48,752 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-23 17:15:48,772 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-23 17:15:48,772 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 18 treesize of output 17 [2021-11-23 17:15:48,800 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:15:48,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097629901] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 17:15:48,801 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-23 17:15:48,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 11, 12, 12, 14] total 63 [2021-11-23 17:15:48,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386606848] [2021-11-23 17:15:48,801 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-23 17:15:48,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2021-11-23 17:15:48,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:15:48,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-11-23 17:15:48,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=263, Invalid=2392, Unknown=45, NotChecked=1332, Total=4032 [2021-11-23 17:15:48,804 INFO L87 Difference]: Start difference. First operand 481 states and 701 transitions. Second operand has 64 states, 63 states have (on average 2.5873015873015874) internal successors, (163), 64 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:15:49,116 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base|) .cse1))) (and (= |c_ULTIMATE.start_main_#t~malloc4#1.offset| (_ bv0 32)) (= |c_ULTIMATE.start_main_~tree~0#1.offset| (_ bv0 32)) (not (= .cse0 |c_ULTIMATE.start_main_~tree~0#1.base|)) (= (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~tree~0#1.base|) .cse1) (_ bv0 32)) (not (= (_ bv1 32) |c_ULTIMATE.start_main_#t~malloc4#1.base|)) (not (= .cse0 (_ bv1 32))) (not (= |c_ULTIMATE.start_main_~tree~0#1.base| |c_ULTIMATE.start_main_#t~malloc4#1.base|)) (= (_ bv0 1) (bvadd (bvneg (bvneg (select |c_#valid| |c_ULTIMATE.start_main_~tree~0#1.base|))) (_ bv1 1))) (forall ((v_ArrVal_2075 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2076 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2077 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~tmpList~0#1.base_51| (_ BitVec 32))) (or (let ((.cse4 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (let ((.cse3 (store (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base|) .cse4) v_ArrVal_2075) |v_ULTIMATE.start_main_~tmpList~0#1.base_51| v_ArrVal_2076))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~tree~0#1.base|) .cse4))) (= .cse2 (select (select (store .cse3 .cse2 v_ArrVal_2077) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse4))))) (= |c_ULTIMATE.start_main_~tree~0#1.base| |v_ULTIMATE.start_main_~tmpList~0#1.base_51|))) (forall ((v_ArrVal_2124 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~tmpList~0#1.base_53| (_ BitVec 32)) (v_ArrVal_2125 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2126 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse8 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (let ((.cse7 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base|) .cse8) v_ArrVal_2124))) (let ((.cse9 (store .cse7 |v_ULTIMATE.start_main_~tmpList~0#1.base_53| v_ArrVal_2125))) (let ((.cse6 (select (select .cse9 |c_ULTIMATE.start_main_~tree~0#1.base|) .cse8))) (let ((.cse5 (select (select (store .cse9 .cse6 v_ArrVal_2126) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse8))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~tmpList~0#1.base_53|)))) (= .cse5 .cse6) (= (select (select .cse7 |c_ULTIMATE.start_main_~tree~0#1.base|) .cse8) .cse5)))))))) (or (forall ((|v_ULTIMATE.start_main_~tmpList~0#1.base_49| (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~tmpList~0#1.base_49|)))))) (= (_ bv0 32) |v_ULTIMATE.start_main_~tmpList~0#1.base_49|) (= |c_ULTIMATE.start_main_~tree~0#1.base| |v_ULTIMATE.start_main_~tmpList~0#1.base_49|))) (forall ((v_ArrVal_2026 (Array (_ BitVec 32) (_ BitVec 32)))) (not (let ((.cse10 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (= .cse10 (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base|) .cse10) v_ArrVal_2026) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse10))))))))) is different from false [2021-11-23 17:15:49,139 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base|) .cse1))) (and (= |c_ULTIMATE.start_main_~tree~0#1.offset| (_ bv0 32)) (not (= .cse0 |c_ULTIMATE.start_main_~tree~0#1.base|)) (= (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~tree~0#1.base|) .cse1) (_ bv0 32)) (not (= .cse0 (_ bv1 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (select |c_#valid| |c_ULTIMATE.start_main_~tree~0#1.base|))) (_ bv1 1))) (forall ((v_ArrVal_2075 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2076 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2077 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~tmpList~0#1.base_51| (_ BitVec 32))) (or (let ((.cse4 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (let ((.cse3 (store (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base|) .cse4) v_ArrVal_2075) |v_ULTIMATE.start_main_~tmpList~0#1.base_51| v_ArrVal_2076))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~tree~0#1.base|) .cse4))) (= .cse2 (select (select (store .cse3 .cse2 v_ArrVal_2077) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse4))))) (= |c_ULTIMATE.start_main_~tree~0#1.base| |v_ULTIMATE.start_main_~tmpList~0#1.base_51|))) (forall ((v_ArrVal_2124 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~tmpList~0#1.base_53| (_ BitVec 32)) (v_ArrVal_2125 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2126 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse8 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (let ((.cse7 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base|) .cse8) v_ArrVal_2124))) (let ((.cse9 (store .cse7 |v_ULTIMATE.start_main_~tmpList~0#1.base_53| v_ArrVal_2125))) (let ((.cse6 (select (select .cse9 |c_ULTIMATE.start_main_~tree~0#1.base|) .cse8))) (let ((.cse5 (select (select (store .cse9 .cse6 v_ArrVal_2126) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse8))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~tmpList~0#1.base_53|)))) (= .cse5 .cse6) (= (select (select .cse7 |c_ULTIMATE.start_main_~tree~0#1.base|) .cse8) .cse5)))))))) (or (forall ((|v_ULTIMATE.start_main_~tmpList~0#1.base_49| (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~tmpList~0#1.base_49|)))))) (= (_ bv0 32) |v_ULTIMATE.start_main_~tmpList~0#1.base_49|) (= |c_ULTIMATE.start_main_~tree~0#1.base| |v_ULTIMATE.start_main_~tmpList~0#1.base_49|))) (forall ((v_ArrVal_2026 (Array (_ BitVec 32) (_ BitVec 32)))) (not (let ((.cse10 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (= .cse10 (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base|) .cse10) v_ArrVal_2026) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse10))))))))) is different from false [2021-11-23 17:16:45,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:16:45,289 INFO L93 Difference]: Finished difference Result 761 states and 1042 transitions. [2021-11-23 17:16:45,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-23 17:16:45,289 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 2.5873015873015874) internal successors, (163), 64 states have internal predecessors, (163), 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 33 [2021-11-23 17:16:45,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:16:45,293 INFO L225 Difference]: With dead ends: 761 [2021-11-23 17:16:45,293 INFO L226 Difference]: Without dead ends: 761 [2021-11-23 17:16:45,295 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 128 SyntacticMatches, 10 SemanticMatches, 90 ConstructedPredicates, 14 IntricatePredicates, 0 DeprecatedPredicates, 1781 ImplicationChecksByTransitivity, 60.1s TimeCoverageRelationStatistics Valid=907, Invalid=5069, Unknown=86, NotChecked=2310, Total=8372 [2021-11-23 17:16:45,296 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 1176 mSDsluCounter, 3687 mSDsCounter, 0 mSdLazyCounter, 2375 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1176 SdHoareTripleChecker+Valid, 3830 SdHoareTripleChecker+Invalid, 6071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 2375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3545 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2021-11-23 17:16:45,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1176 Valid, 3830 Invalid, 6071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 2375 Invalid, 0 Unknown, 3545 Unchecked, 7.5s Time] [2021-11-23 17:16:45,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2021-11-23 17:16:45,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 518. [2021-11-23 17:16:45,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 473 states have (on average 1.602536997885835) internal successors, (758), 517 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:16:45,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 758 transitions. [2021-11-23 17:16:45,305 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 758 transitions. Word has length 33 [2021-11-23 17:16:45,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:16:45,305 INFO L470 AbstractCegarLoop]: Abstraction has 518 states and 758 transitions. [2021-11-23 17:16:45,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 2.5873015873015874) internal successors, (163), 64 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:16:45,306 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 758 transitions. [2021-11-23 17:16:45,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-23 17:16:45,307 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:16:45,307 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:16:45,335 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2021-11-23 17:16:45,534 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2021-11-23 17:16:45,727 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (52)] Ended with exit code 0 [2021-11-23 17:16:45,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3,52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt [2021-11-23 17:16:45,924 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 100 more)] === [2021-11-23 17:16:45,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:16:45,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1883078046, now seen corresponding path program 1 times [2021-11-23 17:16:45,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:16:45,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [796297185] [2021-11-23 17:16:45,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:16:45,924 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:16:45,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:16:45,926 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:16:45,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82a7246c-4a78-4742-8baa-0d1f37bbdb87/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2021-11-23 17:16:46,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:16:46,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-23 17:16:46,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:16:46,175 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 6 treesize of output 5 [2021-11-23 17:16:46,221 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 17:16:46,222 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2021-11-23 17:16:46,267 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 17:16:46,275 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 17:16:46,352 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 20 treesize of output 8 [2021-11-23 17:16:46,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-11-23 17:16:46,511 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 17:16:46,511 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 1 case distinctions, treesize of input 15 treesize of output 15 [2021-11-23 17:16:46,607 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 16 treesize of output 18 [2021-11-23 17:16:46,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:16:46,723 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 45 [2021-11-23 17:16:46,757 INFO L354 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2021-11-23 17:16:46,758 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 81 treesize of output 87 [2021-11-23 17:16:46,764 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 61 treesize of output 45 [2021-11-23 17:16:48,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:16:48,066 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 17:16:48,066 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 4 new quantified variables, introduced 2 case distinctions, treesize of input 62 treesize of output 33 [2021-11-23 17:16:48,072 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 26 treesize of output 14 [2021-11-23 17:16:48,136 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:16:48,136 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 17:16:49,290 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 17:16:49,290 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 63 treesize of output 67 [2021-11-23 17:16:50,064 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-11-23 17:16:50,064 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 172 treesize of output 120 [2021-11-23 17:16:50,351 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 17 treesize of output 13 [2021-11-23 17:16:50,368 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 13 treesize of output 5 [2021-11-23 17:16:50,484 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimCell_524 (_ BitVec 32))) (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (let ((.cse3 (= v_arrayElimCell_524 |c_ULTIMATE.start_main_~tree~0#1.base|)) (.cse2 (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~tree~0#1.base|) .cse1))) (or (and (forall ((v_ArrVal_2177 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| v_arrayElimCell_524 v_ArrVal_2177) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse0)) (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~tree~0#1.base|) .cse0))))) (or (not (= .cse1 .cse2)) (= v_arrayElimCell_524 |c_ULTIMATE.start_main_~tmpList~0#1.base|) (not .cse3)) (forall ((v_prenex_497 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select (select (store |c_#memory_$Pointer$.offset| v_arrayElimCell_524 v_prenex_497) |c_ULTIMATE.start_main_~tree~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|)))) (bvule .cse4 (bvadd (_ bv4 32) .cse4))))) (and .cse3 (= .cse2 |c_ULTIMATE.start_main_~tree~0#1.offset|) (not (= |c_ULTIMATE.start_main_~tmpList~0#1.base| (_ bv0 32)))))))) is different from false [2021-11-23 17:16:51,003 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2175 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_524 (_ BitVec 32))) (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (let ((.cse2 (= v_arrayElimCell_524 |c_ULTIMATE.start_main_~tree~0#1.base|)) (.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~tmpList~0#1.base| v_ArrVal_2175) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse1))) (or (and (or (not (= .cse0 .cse1)) (= v_arrayElimCell_524 |c_ULTIMATE.start_main_~tmpList~0#1.base|) (not .cse2)) (forall ((v_prenex_497 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~tmpList~0#1.base| v_ArrVal_2175) v_arrayElimCell_524 v_prenex_497) |c_ULTIMATE.start_main_~tree~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|)))) (bvule .cse3 (bvadd (_ bv4 32) .cse3)))) (forall ((v_ArrVal_2177 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~tmpList~0#1.base| v_ArrVal_2175)) (.cse5 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (bvule (bvadd (_ bv4 32) (select (select (store .cse4 v_arrayElimCell_524 v_ArrVal_2177) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse5)) (bvadd (select (select .cse4 |c_ULTIMATE.start_main_~tree~0#1.base|) .cse5) (_ bv4 32)))))) (and .cse2 (= .cse0 |c_ULTIMATE.start_main_~tree~0#1.offset|) (not (= |c_ULTIMATE.start_main_~tmpList~0#1.base| (_ bv0 32)))))))) is different from false