./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-simple/dll2n_remove_all.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002d4626-d2ac-4a80-86e4-6d0d59b07939/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002d4626-d2ac-4a80-86e4-6d0d59b07939/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002d4626-d2ac-4a80-86e4-6d0d59b07939/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002d4626-d2ac-4a80-86e4-6d0d59b07939/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-simple/dll2n_remove_all.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002d4626-d2ac-4a80-86e4-6d0d59b07939/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002d4626-d2ac-4a80-86e4-6d0d59b07939/bin/utaipan-eEHZpOm5b7 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b594cdd667b896d6ce097f6fd96950290806f015d929f3b2b06ffea35d861f89 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 18:11:41,530 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 18:11:41,531 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 18:11:41,579 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 18:11:41,580 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 18:11:41,585 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 18:11:41,587 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 18:11:41,591 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 18:11:41,593 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 18:11:41,601 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 18:11:41,602 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 18:11:41,604 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 18:11:41,604 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 18:11:41,607 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 18:11:41,609 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 18:11:41,614 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 18:11:41,617 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 18:11:41,618 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 18:11:41,622 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 18:11:41,626 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 18:11:41,631 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 18:11:41,632 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 18:11:41,635 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 18:11:41,636 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 18:11:41,640 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 18:11:41,640 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 18:11:41,640 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 18:11:41,641 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 18:11:41,642 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 18:11:41,643 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 18:11:41,643 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 18:11:41,644 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 18:11:41,645 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 18:11:41,646 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 18:11:41,647 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 18:11:41,647 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 18:11:41,648 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 18:11:41,648 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 18:11:41,648 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 18:11:41,649 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 18:11:41,650 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 18:11:41,651 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002d4626-d2ac-4a80-86e4-6d0d59b07939/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 18:11:41,698 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 18:11:41,699 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 18:11:41,699 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 18:11:41,699 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 18:11:41,700 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 18:11:41,701 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 18:11:41,701 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 18:11:41,701 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 18:11:41,701 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 18:11:41,701 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 18:11:41,702 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 18:11:41,703 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 18:11:41,703 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 18:11:41,703 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 18:11:41,703 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 18:11:41,703 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 18:11:41,704 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 18:11:41,704 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 18:11:41,705 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 18:11:41,705 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 18:11:41,705 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 18:11:41,705 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 18:11:41,706 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 18:11:41,706 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 18:11:41,706 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 18:11:41,706 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 18:11:41,707 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 18:11:41,708 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 18:11:41,708 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 18:11:41,708 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 18:11:41,708 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 18:11:41,709 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 18:11:41,709 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:11:41,709 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 18:11:41,709 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 18:11:41,709 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 18:11:41,710 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 18:11:41,710 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 18:11:41,710 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 18:11:41,710 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 18:11:41,710 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 18:11:41,711 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_002d4626-d2ac-4a80-86e4-6d0d59b07939/bin/utaipan-eEHZpOm5b7/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002d4626-d2ac-4a80-86e4-6d0d59b07939/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b594cdd667b896d6ce097f6fd96950290806f015d929f3b2b06ffea35d861f89 [2021-11-25 18:11:41,979 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 18:11:42,015 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 18:11:42,017 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 18:11:42,018 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 18:11:42,019 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 18:11:42,020 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002d4626-d2ac-4a80-86e4-6d0d59b07939/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/list-simple/dll2n_remove_all.i [2021-11-25 18:11:42,079 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002d4626-d2ac-4a80-86e4-6d0d59b07939/bin/utaipan-eEHZpOm5b7/data/00a6b6a96/6ac0aa393f9f42a4b750ec9e417a369a/FLAG2972d1938 [2021-11-25 18:11:42,664 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 18:11:42,665 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002d4626-d2ac-4a80-86e4-6d0d59b07939/sv-benchmarks/c/list-simple/dll2n_remove_all.i [2021-11-25 18:11:42,690 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002d4626-d2ac-4a80-86e4-6d0d59b07939/bin/utaipan-eEHZpOm5b7/data/00a6b6a96/6ac0aa393f9f42a4b750ec9e417a369a/FLAG2972d1938 [2021-11-25 18:11:42,927 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002d4626-d2ac-4a80-86e4-6d0d59b07939/bin/utaipan-eEHZpOm5b7/data/00a6b6a96/6ac0aa393f9f42a4b750ec9e417a369a [2021-11-25 18:11:42,930 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 18:11:42,931 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 18:11:42,933 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 18:11:42,933 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 18:11:42,937 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 18:11:42,937 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:11:42" (1/1) ... [2021-11-25 18:11:42,939 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fbeaaae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:42, skipping insertion in model container [2021-11-25 18:11:42,939 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:11:42" (1/1) ... [2021-11-25 18:11:42,946 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 18:11:42,979 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:11:43,297 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002d4626-d2ac-4a80-86e4-6d0d59b07939/sv-benchmarks/c/list-simple/dll2n_remove_all.i[24090,24103] [2021-11-25 18:11:43,305 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:11:43,314 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 18:11:43,375 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002d4626-d2ac-4a80-86e4-6d0d59b07939/sv-benchmarks/c/list-simple/dll2n_remove_all.i[24090,24103] [2021-11-25 18:11:43,376 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:11:43,409 INFO L208 MainTranslator]: Completed translation [2021-11-25 18:11:43,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:43 WrapperNode [2021-11-25 18:11:43,411 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 18:11:43,412 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 18:11:43,412 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 18:11:43,412 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 18:11:43,419 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:43" (1/1) ... [2021-11-25 18:11:43,451 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:43" (1/1) ... [2021-11-25 18:11:43,473 INFO L137 Inliner]: procedures = 126, calls = 31, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 78 [2021-11-25 18:11:43,473 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 18:11:43,474 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 18:11:43,474 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 18:11:43,474 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 18:11:43,480 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:43" (1/1) ... [2021-11-25 18:11:43,481 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:43" (1/1) ... [2021-11-25 18:11:43,484 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:43" (1/1) ... [2021-11-25 18:11:43,484 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:43" (1/1) ... [2021-11-25 18:11:43,491 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:43" (1/1) ... [2021-11-25 18:11:43,494 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:43" (1/1) ... [2021-11-25 18:11:43,496 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:43" (1/1) ... [2021-11-25 18:11:43,499 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 18:11:43,500 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 18:11:43,500 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 18:11:43,500 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 18:11:43,501 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:43" (1/1) ... [2021-11-25 18:11:43,508 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:11:43,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002d4626-d2ac-4a80-86e4-6d0d59b07939/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:11:43,545 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002d4626-d2ac-4a80-86e4-6d0d59b07939/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 18:11:43,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002d4626-d2ac-4a80-86e4-6d0d59b07939/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 18:11:43,587 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-11-25 18:11:43,587 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-11-25 18:11:43,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 18:11:43,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 18:11:43,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 18:11:43,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 18:11:43,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 18:11:43,588 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 18:11:43,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 18:11:43,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 18:11:43,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 18:11:43,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 18:11:43,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 18:11:43,763 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 18:11:43,765 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 18:11:43,826 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-11-25 18:11:44,044 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 18:11:44,113 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 18:11:44,113 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-25 18:11:44,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:11:44 BoogieIcfgContainer [2021-11-25 18:11:44,116 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 18:11:44,118 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 18:11:44,118 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 18:11:44,121 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 18:11:44,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:11:42" (1/3) ... [2021-11-25 18:11:44,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a5a77e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:11:44, skipping insertion in model container [2021-11-25 18:11:44,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:43" (2/3) ... [2021-11-25 18:11:44,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a5a77e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:11:44, skipping insertion in model container [2021-11-25 18:11:44,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:11:44" (3/3) ... [2021-11-25 18:11:44,124 INFO L111 eAbstractionObserver]: Analyzing ICFG dll2n_remove_all.i [2021-11-25 18:11:44,130 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 18:11:44,131 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 18:11:44,195 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 18:11:44,203 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 18:11:44,203 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 18:11:44,228 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:11:44,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-25 18:11:44,236 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:11:44,237 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-25 18:11:44,237 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:11:44,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:11:44,244 INFO L85 PathProgramCache]: Analyzing trace with hash 100507244, now seen corresponding path program 1 times [2021-11-25 18:11:44,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:11:44,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423631353] [2021-11-25 18:11:44,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:11:44,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:11:44,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:11:44,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:11:44,478 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:11:44,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423631353] [2021-11-25 18:11:44,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423631353] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:11:44,479 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:11:44,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 18:11:44,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399270247] [2021-11-25 18:11:44,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:11:44,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:11:44,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:11:44,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:11:44,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:11:44,521 INFO L87 Difference]: Start difference. First operand has 13 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:11:44,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:11:44,591 INFO L93 Difference]: Finished difference Result 23 states and 29 transitions. [2021-11-25 18:11:44,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:11:44,596 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-25 18:11:44,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:11:44,603 INFO L225 Difference]: With dead ends: 23 [2021-11-25 18:11:44,603 INFO L226 Difference]: Without dead ends: 11 [2021-11-25 18:11:44,606 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:11:44,611 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 3 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:11:44,612 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 16 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:11:44,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-11-25 18:11:44,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2021-11-25 18:11:44,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:11:44,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2021-11-25 18:11:44,646 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 5 [2021-11-25 18:11:44,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:11:44,647 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2021-11-25 18:11:44,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:11:44,647 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2021-11-25 18:11:44,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-25 18:11:44,648 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:11:44,648 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:11:44,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 18:11:44,649 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:11:44,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:11:44,650 INFO L85 PathProgramCache]: Analyzing trace with hash 2083183978, now seen corresponding path program 1 times [2021-11-25 18:11:44,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:11:44,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734879024] [2021-11-25 18:11:44,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:11:44,651 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:11:44,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:11:44,734 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 18:11:44,734 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:11:44,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734879024] [2021-11-25 18:11:44,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734879024] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:11:44,735 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:11:44,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:11:44,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642381546] [2021-11-25 18:11:44,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:11:44,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 18:11:44,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:11:44,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 18:11:44,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:11:44,738 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:11:44,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:11:44,776 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2021-11-25 18:11:44,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 18:11:44,777 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-25 18:11:44,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:11:44,777 INFO L225 Difference]: With dead ends: 13 [2021-11-25 18:11:44,777 INFO L226 Difference]: Without dead ends: 10 [2021-11-25 18:11:44,778 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:11:44,779 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 5 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:11:44,780 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 8 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:11:44,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-11-25 18:11:44,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-11-25 18:11:44,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:11:44,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2021-11-25 18:11:44,783 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 8 [2021-11-25 18:11:44,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:11:44,784 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2021-11-25 18:11:44,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:11:44,784 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2021-11-25 18:11:44,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-25 18:11:44,785 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:11:44,785 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:11:44,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 18:11:44,785 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:11:44,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:11:44,786 INFO L85 PathProgramCache]: Analyzing trace with hash 154153459, now seen corresponding path program 1 times [2021-11-25 18:11:44,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:11:44,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821997389] [2021-11-25 18:11:44,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:11:44,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:11:44,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:11:44,960 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 18:11:44,961 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:11:44,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821997389] [2021-11-25 18:11:44,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821997389] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:11:44,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49090107] [2021-11-25 18:11:44,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:11:44,962 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:11:44,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002d4626-d2ac-4a80-86e4-6d0d59b07939/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:11:44,964 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002d4626-d2ac-4a80-86e4-6d0d59b07939/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:11:44,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002d4626-d2ac-4a80-86e4-6d0d59b07939/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 18:11:45,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:11:45,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-25 18:11:45,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:11:45,144 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 18:11:45,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:11:45,173 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 18:11:45,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [49090107] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:11:45,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [708657104] [2021-11-25 18:11:45,193 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-25 18:11:45,193 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:11:45,198 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:11:45,204 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:11:45,204 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:11:45,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:45,320 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 18:11:45,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-25 18:11:45,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:45,348 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-25 18:11:45,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:45,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:45,460 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-25 18:11:45,460 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2021-11-25 18:11:45,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:45,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:45,494 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2021-11-25 18:11:45,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:45,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:45,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:45,616 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2021-11-25 18:11:45,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:45,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:45,649 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 28 [2021-11-25 18:11:45,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:45,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:45,665 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2021-11-25 18:11:45,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:45,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:45,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:45,698 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2021-11-25 18:11:45,991 INFO L354 Elim1Store]: treesize reduction 124, result has 24.8 percent of original size [2021-11-25 18:11:45,991 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 280 treesize of output 304 [2021-11-25 18:11:46,082 INFO L354 Elim1Store]: treesize reduction 64, result has 19.0 percent of original size [2021-11-25 18:11:46,083 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 273 treesize of output 282 [2021-11-25 18:11:46,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:46,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:46,788 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-25 18:11:46,789 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 283 treesize of output 269 [2021-11-25 18:11:46,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:46,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:46,874 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-25 18:11:46,875 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 287 treesize of output 272 [2021-11-25 18:11:46,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:46,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:46,931 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 276 treesize of output 267 [2021-11-25 18:11:46,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:46,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:46,974 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 276 treesize of output 267 [2021-11-25 18:11:47,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:47,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:47,005 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:11:47,005 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:11:47,006 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:11:47,083 INFO L354 Elim1Store]: treesize reduction 66, result has 32.0 percent of original size [2021-11-25 18:11:47,084 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 423 treesize of output 433 [2021-11-25 18:11:47,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:47,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:47,129 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:11:47,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:47,132 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:11:47,135 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 488 treesize of output 493 [2021-11-25 18:11:47,235 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:11:47,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:47,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:47,297 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 47 [2021-11-25 18:11:47,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:47,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:47,443 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 29 [2021-11-25 18:11:47,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:47,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:47,586 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:11:47,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 29 [2021-11-25 18:11:47,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:47,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:47,695 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:11:47,696 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:11:47,704 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-25 18:11:47,706 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 270 treesize of output 135 [2021-11-25 18:11:47,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:47,834 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-25 18:11:47,835 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 133 treesize of output 70 [2021-11-25 18:11:47,966 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 18:11:47,976 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 9 [2021-11-25 18:11:48,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:48,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:48,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:48,043 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:11:48,095 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-25 18:11:48,096 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 171 treesize of output 171 [2021-11-25 18:11:48,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:48,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:48,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:48,142 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:11:48,145 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:11:48,167 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-11-25 18:11:48,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 158 treesize of output 148 [2021-11-25 18:11:48,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:48,197 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2021-11-25 18:11:48,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:48,217 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 27 treesize of output 11 [2021-11-25 18:11:48,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:48,252 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 11 [2021-11-25 18:11:48,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:48,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:48,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:48,289 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 23 [2021-11-25 18:11:48,319 WARN L220 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:11:48,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:48,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:48,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:48,359 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 99 treesize of output 65 [2021-11-25 18:11:48,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:48,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:48,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:48,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 68 [2021-11-25 18:11:48,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:48,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:48,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:48,430 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 23 [2021-11-25 18:11:48,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:48,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:48,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:48,468 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 71 [2021-11-25 18:11:48,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:48,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:48,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:48,488 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 71 [2021-11-25 18:11:48,595 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2021-11-25 18:11:48,650 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 19 treesize of output 1 [2021-11-25 18:11:48,666 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 15 treesize of output 1 [2021-11-25 18:11:48,751 INFO L354 Elim1Store]: treesize reduction 70, result has 32.0 percent of original size [2021-11-25 18:11:48,752 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 55 treesize of output 66 [2021-11-25 18:11:48,855 INFO L354 Elim1Store]: treesize reduction 190, result has 15.2 percent of original size [2021-11-25 18:11:48,856 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 157 treesize of output 142 [2021-11-25 18:11:48,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:48,949 INFO L354 Elim1Store]: treesize reduction 42, result has 46.8 percent of original size [2021-11-25 18:11:48,949 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 63 treesize of output 76 [2021-11-25 18:11:48,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:49,039 INFO L354 Elim1Store]: treesize reduction 60, result has 36.2 percent of original size [2021-11-25 18:11:49,040 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 157 treesize of output 169 [2021-11-25 18:11:49,160 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2021-11-25 18:11:49,217 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2021-11-25 18:11:49,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2021-11-25 18:11:49,357 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 19 treesize of output 1 [2021-11-25 18:11:49,371 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 15 treesize of output 1 [2021-11-25 18:11:49,501 INFO L354 Elim1Store]: treesize reduction 128, result has 36.0 percent of original size [2021-11-25 18:11:49,502 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 111 treesize of output 147 [2021-11-25 18:11:49,530 INFO L354 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2021-11-25 18:11:49,531 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 21 treesize of output 7 [2021-11-25 18:11:49,605 INFO L354 Elim1Store]: treesize reduction 42, result has 46.8 percent of original size [2021-11-25 18:11:49,605 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 73 [2021-11-25 18:11:49,912 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:11:49,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:49,957 INFO L354 Elim1Store]: treesize reduction 33, result has 34.0 percent of original size [2021-11-25 18:11:49,957 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 51 [2021-11-25 18:11:50,144 INFO L354 Elim1Store]: treesize reduction 56, result has 39.8 percent of original size [2021-11-25 18:11:50,144 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 64 treesize of output 77 [2021-11-25 18:11:50,853 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:11:50,987 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:11:50,997 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:11:51,017 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:11:51,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:51,334 INFO L354 Elim1Store]: treesize reduction 17, result has 15.0 percent of original size [2021-11-25 18:11:51,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 29 [2021-11-25 18:11:51,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:51,641 INFO L354 Elim1Store]: treesize reduction 17, result has 15.0 percent of original size [2021-11-25 18:11:51,641 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 29 [2021-11-25 18:11:51,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:51,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:51,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:51,667 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:11:51,668 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 10 [2021-11-25 18:11:51,740 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:11:53,221 INFO L354 Elim1Store]: treesize reduction 876, result has 27.4 percent of original size [2021-11-25 18:11:53,222 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 12 new quantified variables, introduced 65 case distinctions, treesize of input 612 treesize of output 807