./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/heap-manipulation/tree-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57e7a54-401e-4005-bb4c-29757467ba69/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57e7a54-401e-4005-bb4c-29757467ba69/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57e7a54-401e-4005-bb4c-29757467ba69/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57e7a54-401e-4005-bb4c-29757467ba69/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/heap-manipulation/tree-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57e7a54-401e-4005-bb4c-29757467ba69/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57e7a54-401e-4005-bb4c-29757467ba69/bin/utaipan-EQgc7hIp5V --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 ff6ec4010c0396675f743c4c0d5de68176a7292a1f0bcf6c389633f85d936d1a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 01:52:32,604 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 01:52:32,607 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 01:52:32,637 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 01:52:32,638 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 01:52:32,639 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 01:52:32,641 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 01:52:32,643 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 01:52:32,646 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 01:52:32,647 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 01:52:32,648 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 01:52:32,649 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 01:52:32,650 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 01:52:32,651 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 01:52:32,653 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 01:52:32,654 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 01:52:32,655 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 01:52:32,656 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 01:52:32,659 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 01:52:32,661 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 01:52:32,663 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 01:52:32,670 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 01:52:32,675 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 01:52:32,676 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 01:52:32,689 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 01:52:32,689 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 01:52:32,690 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 01:52:32,691 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 01:52:32,692 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 01:52:32,693 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 01:52:32,693 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 01:52:32,694 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 01:52:32,695 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 01:52:32,696 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 01:52:32,697 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 01:52:32,697 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 01:52:32,698 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 01:52:32,699 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 01:52:32,699 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 01:52:32,701 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 01:52:32,701 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 01:52:32,702 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57e7a54-401e-4005-bb4c-29757467ba69/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 01:52:32,728 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 01:52:32,728 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 01:52:32,728 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 01:52:32,729 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 01:52:32,729 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 01:52:32,730 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 01:52:32,730 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 01:52:32,730 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 01:52:32,731 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 01:52:32,731 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 01:52:32,731 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 01:52:32,731 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 01:52:32,731 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 01:52:32,732 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 01:52:32,732 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 01:52:32,732 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 01:52:32,733 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 01:52:32,733 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 01:52:32,733 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 01:52:32,734 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 01:52:32,734 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 01:52:32,734 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 01:52:32,734 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 01:52:32,734 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 01:52:32,734 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 01:52:32,735 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 01:52:32,735 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 01:52:32,735 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 01:52:32,735 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 01:52:32,735 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 01:52:32,736 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 01:52:32,736 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 01:52:32,736 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 01:52:32,736 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 01:52:32,736 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 01:52:32,737 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 01:52:32,737 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 01:52:32,737 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 01:52:32,737 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 01:52:32,737 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 01:52:32,738 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 01:52:32,738 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_a57e7a54-401e-4005-bb4c-29757467ba69/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57e7a54-401e-4005-bb4c-29757467ba69/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ff6ec4010c0396675f743c4c0d5de68176a7292a1f0bcf6c389633f85d936d1a [2021-11-23 01:52:33,005 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 01:52:33,030 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 01:52:33,032 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 01:52:33,033 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 01:52:33,035 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 01:52:33,036 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57e7a54-401e-4005-bb4c-29757467ba69/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/heap-manipulation/tree-2.i [2021-11-23 01:52:33,103 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57e7a54-401e-4005-bb4c-29757467ba69/bin/utaipan-EQgc7hIp5V/data/7543d4de1/6b72378c9b9449f690aef5657317564c/FLAG814b21d1d [2021-11-23 01:52:33,622 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 01:52:33,623 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57e7a54-401e-4005-bb4c-29757467ba69/sv-benchmarks/c/heap-manipulation/tree-2.i [2021-11-23 01:52:33,643 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57e7a54-401e-4005-bb4c-29757467ba69/bin/utaipan-EQgc7hIp5V/data/7543d4de1/6b72378c9b9449f690aef5657317564c/FLAG814b21d1d [2021-11-23 01:52:34,123 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57e7a54-401e-4005-bb4c-29757467ba69/bin/utaipan-EQgc7hIp5V/data/7543d4de1/6b72378c9b9449f690aef5657317564c [2021-11-23 01:52:34,126 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 01:52:34,127 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 01:52:34,128 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 01:52:34,129 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 01:52:34,132 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 01:52:34,133 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:52:34" (1/1) ... [2021-11-23 01:52:34,134 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73250f01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:34, skipping insertion in model container [2021-11-23 01:52:34,134 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:52:34" (1/1) ... [2021-11-23 01:52:34,140 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 01:52:34,192 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 01:52:34,482 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_a57e7a54-401e-4005-bb4c-29757467ba69/sv-benchmarks/c/heap-manipulation/tree-2.i[22626,22639] [2021-11-23 01:52:34,503 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 01:52:34,510 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 01:52:34,541 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_a57e7a54-401e-4005-bb4c-29757467ba69/sv-benchmarks/c/heap-manipulation/tree-2.i[22626,22639] [2021-11-23 01:52:34,552 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 01:52:34,587 INFO L208 MainTranslator]: Completed translation [2021-11-23 01:52:34,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:34 WrapperNode [2021-11-23 01:52:34,588 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 01:52:34,589 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 01:52:34,589 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 01:52:34,589 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 01:52:34,597 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:34" (1/1) ... [2021-11-23 01:52:34,611 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:34" (1/1) ... [2021-11-23 01:52:34,637 INFO L137 Inliner]: procedures = 122, calls = 43, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 144 [2021-11-23 01:52:34,638 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 01:52:34,638 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 01:52:34,639 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 01:52:34,639 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 01:52:34,646 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:34" (1/1) ... [2021-11-23 01:52:34,647 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:34" (1/1) ... [2021-11-23 01:52:34,651 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:34" (1/1) ... [2021-11-23 01:52:34,651 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:34" (1/1) ... [2021-11-23 01:52:34,660 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:34" (1/1) ... [2021-11-23 01:52:34,665 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:34" (1/1) ... [2021-11-23 01:52:34,667 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:34" (1/1) ... [2021-11-23 01:52:34,671 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 01:52:34,672 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 01:52:34,672 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 01:52:34,672 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 01:52:34,673 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:34" (1/1) ... [2021-11-23 01:52:34,695 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 01:52:34,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57e7a54-401e-4005-bb4c-29757467ba69/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 01:52:34,732 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57e7a54-401e-4005-bb4c-29757467ba69/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 01:52:34,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57e7a54-401e-4005-bb4c-29757467ba69/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 01:52:34,777 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 01:52:34,777 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2021-11-23 01:52:34,778 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2021-11-23 01:52:34,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 01:52:34,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 01:52:34,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 01:52:34,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 01:52:34,778 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 01:52:34,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 01:52:34,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 01:52:34,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 01:52:34,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 01:52:34,874 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 01:52:34,875 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 01:52:35,248 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 01:52:35,363 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 01:52:35,363 INFO L301 CfgBuilder]: Removed 11 assume(true) statements. [2021-11-23 01:52:35,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:52:35 BoogieIcfgContainer [2021-11-23 01:52:35,368 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 01:52:35,370 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 01:52:35,371 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 01:52:35,375 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 01:52:35,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:52:34" (1/3) ... [2021-11-23 01:52:35,375 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bb015ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:52:35, skipping insertion in model container [2021-11-23 01:52:35,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:34" (2/3) ... [2021-11-23 01:52:35,376 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bb015ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:52:35, skipping insertion in model container [2021-11-23 01:52:35,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:52:35" (3/3) ... [2021-11-23 01:52:35,377 INFO L111 eAbstractionObserver]: Analyzing ICFG tree-2.i [2021-11-23 01:52:35,386 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 01:52:35,387 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 01:52:35,447 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 01:52:35,457 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 01:52:35,457 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 01:52:35,486 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 25 states have internal predecessors, (40), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-23 01:52:35,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-23 01:52:35,490 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:52:35,491 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:52:35,491 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 01:52:35,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:52:35,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1274429877, now seen corresponding path program 1 times [2021-11-23 01:52:35,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:52:35,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17913185] [2021-11-23 01:52:35,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:52:35,511 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:52:35,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:52:35,699 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 01:52:35,700 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:52:35,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17913185] [2021-11-23 01:52:35,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17913185] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:52:35,702 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:52:35,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 01:52:35,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567649781] [2021-11-23 01:52:35,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:52:35,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 01:52:35,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:52:35,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 01:52:35,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 01:52:35,744 INFO L87 Difference]: Start difference. First operand has 27 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 25 states have internal predecessors, (40), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2021-11-23 01:52:35,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:52:35,806 INFO L93 Difference]: Finished difference Result 50 states and 87 transitions. [2021-11-23 01:52:35,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 01:52:35,808 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) Word has length 7 [2021-11-23 01:52:35,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:52:35,815 INFO L225 Difference]: With dead ends: 50 [2021-11-23 01:52:35,815 INFO L226 Difference]: Without dead ends: 21 [2021-11-23 01:52:35,818 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 01:52:35,822 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 01:52:35,823 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 01:52:35,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-11-23 01:52:35,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-11-23 01:52:35,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 19 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 01:52:35,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2021-11-23 01:52:35,857 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 26 transitions. Word has length 7 [2021-11-23 01:52:35,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:52:35,857 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 26 transitions. [2021-11-23 01:52:35,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2021-11-23 01:52:35,858 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 26 transitions. [2021-11-23 01:52:35,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-23 01:52:35,859 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:52:35,859 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:52:35,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 01:52:35,860 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 01:52:35,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:52:35,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1477503075, now seen corresponding path program 1 times [2021-11-23 01:52:35,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:52:35,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970771516] [2021-11-23 01:52:35,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:52:35,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:52:35,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:52:35,958 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 01:52:35,959 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:52:35,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970771516] [2021-11-23 01:52:35,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970771516] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:52:35,960 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:52:35,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 01:52:35,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039143899] [2021-11-23 01:52:35,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:52:35,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 01:52:35,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:52:35,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 01:52:35,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 01:52:35,963 INFO L87 Difference]: Start difference. First operand 21 states and 26 transitions. Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 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) [2021-11-23 01:52:36,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:52:36,233 INFO L93 Difference]: Finished difference Result 52 states and 65 transitions. [2021-11-23 01:52:36,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 01:52:36,234 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 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) Word has length 8 [2021-11-23 01:52:36,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:52:36,235 INFO L225 Difference]: With dead ends: 52 [2021-11-23 01:52:36,236 INFO L226 Difference]: Without dead ends: 49 [2021-11-23 01:52:36,236 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 01:52:36,238 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 67 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 01:52:36,238 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 82 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 01:52:36,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-11-23 01:52:36,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 26. [2021-11-23 01:52:36,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 24 states have internal predecessors, (30), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 01:52:36,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2021-11-23 01:52:36,246 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 8 [2021-11-23 01:52:36,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:52:36,246 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2021-11-23 01:52:36,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 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) [2021-11-23 01:52:36,247 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2021-11-23 01:52:36,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-23 01:52:36,247 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:52:36,247 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:52:36,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 01:52:36,248 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 01:52:36,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:52:36,249 INFO L85 PathProgramCache]: Analyzing trace with hash 974936853, now seen corresponding path program 1 times [2021-11-23 01:52:36,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:52:36,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279509074] [2021-11-23 01:52:36,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:52:36,250 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:52:36,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:52:36,325 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 01:52:36,325 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:52:36,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279509074] [2021-11-23 01:52:36,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279509074] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:52:36,326 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:52:36,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 01:52:36,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516678915] [2021-11-23 01:52:36,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:52:36,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 01:52:36,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:52:36,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 01:52:36,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:52:36,329 INFO L87 Difference]: Start difference. First operand 26 states and 33 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2021-11-23 01:52:36,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:52:36,422 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2021-11-23 01:52:36,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 01:52:36,428 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) Word has length 10 [2021-11-23 01:52:36,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:52:36,428 INFO L225 Difference]: With dead ends: 44 [2021-11-23 01:52:36,429 INFO L226 Difference]: Without dead ends: 27 [2021-11-23 01:52:36,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 01:52:36,431 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 01:52:36,431 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 46 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 01:52:36,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-11-23 01:52:36,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-11-23 01:52:36,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 25 states have internal predecessors, (31), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 01:52:36,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2021-11-23 01:52:36,445 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 34 transitions. Word has length 10 [2021-11-23 01:52:36,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:52:36,447 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 34 transitions. [2021-11-23 01:52:36,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2021-11-23 01:52:36,447 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions. [2021-11-23 01:52:36,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-23 01:52:36,448 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:52:36,448 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:52:36,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 01:52:36,449 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 01:52:36,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:52:36,449 INFO L85 PathProgramCache]: Analyzing trace with hash 430427284, now seen corresponding path program 1 times [2021-11-23 01:52:36,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:52:36,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43369815] [2021-11-23 01:52:36,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:52:36,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:52:36,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:52:36,605 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 01:52:36,606 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:52:36,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43369815] [2021-11-23 01:52:36,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43369815] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:52:36,607 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:52:36,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 01:52:36,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704683106] [2021-11-23 01:52:36,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:52:36,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 01:52:36,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:52:36,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 01:52:36,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 01:52:36,611 INFO L87 Difference]: Start difference. First operand 27 states and 34 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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) [2021-11-23 01:52:36,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:52:36,865 INFO L93 Difference]: Finished difference Result 52 states and 64 transitions. [2021-11-23 01:52:36,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 01:52:36,865 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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) Word has length 11 [2021-11-23 01:52:36,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:52:36,867 INFO L225 Difference]: With dead ends: 52 [2021-11-23 01:52:36,867 INFO L226 Difference]: Without dead ends: 49 [2021-11-23 01:52:36,867 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 01:52:36,869 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 66 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 01:52:36,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 104 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 01:52:36,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-11-23 01:52:36,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 23. [2021-11-23 01:52:36,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 20 states have (on average 1.3) internal successors, (26), 21 states have internal predecessors, (26), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 01:52:36,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2021-11-23 01:52:36,876 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 11 [2021-11-23 01:52:36,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:52:36,876 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2021-11-23 01:52:36,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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) [2021-11-23 01:52:36,876 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2021-11-23 01:52:36,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-23 01:52:36,877 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:52:36,877 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:52:36,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 01:52:36,878 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 01:52:36,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:52:36,878 INFO L85 PathProgramCache]: Analyzing trace with hash -289316313, now seen corresponding path program 1 times [2021-11-23 01:52:36,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:52:36,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67456620] [2021-11-23 01:52:36,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:52:36,879 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:52:36,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:52:36,951 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 01:52:36,952 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:52:36,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67456620] [2021-11-23 01:52:36,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67456620] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:52:36,953 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:52:36,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 01:52:36,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573015025] [2021-11-23 01:52:36,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:52:36,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 01:52:36,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:52:36,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 01:52:36,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 01:52:36,970 INFO L87 Difference]: Start difference. First operand 23 states and 28 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2021-11-23 01:52:37,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:52:37,107 INFO L93 Difference]: Finished difference Result 40 states and 48 transitions. [2021-11-23 01:52:37,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 01:52:37,114 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 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) Word has length 13 [2021-11-23 01:52:37,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:52:37,115 INFO L225 Difference]: With dead ends: 40 [2021-11-23 01:52:37,115 INFO L226 Difference]: Without dead ends: 23 [2021-11-23 01:52:37,115 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 [2021-11-23 01:52:37,117 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 2 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 01:52:37,117 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 59 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 01:52:37,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-11-23 01:52:37,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-11-23 01:52:37,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 20 states have (on average 1.25) internal successors, (25), 21 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 01:52:37,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2021-11-23 01:52:37,122 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 13 [2021-11-23 01:52:37,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:52:37,122 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2021-11-23 01:52:37,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2021-11-23 01:52:37,123 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2021-11-23 01:52:37,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-23 01:52:37,123 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:52:37,123 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:52:37,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 01:52:37,124 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 01:52:37,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:52:37,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1646907504, now seen corresponding path program 1 times [2021-11-23 01:52:37,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:52:37,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283487392] [2021-11-23 01:52:37,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:52:37,125 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:52:37,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:52:37,352 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:52:37,352 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:52:37,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283487392] [2021-11-23 01:52:37,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283487392] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 01:52:37,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750795613] [2021-11-23 01:52:37,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:52:37,353 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 01:52:37,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57e7a54-401e-4005-bb4c-29757467ba69/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 01:52:37,358 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57e7a54-401e-4005-bb4c-29757467ba69/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 01:52:37,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57e7a54-401e-4005-bb4c-29757467ba69/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 01:52:37,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:52:37,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 39 conjunts are in the unsatisfiable core [2021-11-23 01:52:37,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 01:52:37,509 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 01:52:37,628 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 01:52:37,648 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 01:52:40,863 INFO L354 Elim1Store]: treesize reduction 5316, result has 3.7 percent of original size [2021-11-23 01:52:40,864 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 12 case distinctions, treesize of input 6697 treesize of output 5420 [2021-11-23 01:52:40,932 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 01:52:40,941 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 01:52:40,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:52:40,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:52:41,046 INFO L354 Elim1Store]: treesize reduction 96, result has 23.2 percent of original size [2021-11-23 01:52:41,047 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 1857 treesize of output 1328 [2021-11-23 01:52:41,144 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-11-23 01:52:41,145 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 1328 treesize of output 1328 [2021-11-23 01:52:41,244 INFO L354 Elim1Store]: treesize reduction 128, result has 12.9 percent of original size [2021-11-23 01:52:41,245 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 1322 treesize of output 954 [2021-11-23 01:52:41,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:52:41,423 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 01:52:41,424 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 3 case distinctions, treesize of input 49 treesize of output 25 [2021-11-23 01:52:41,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:52:41,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:52:41,462 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 01:52:41,462 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 41 treesize of output 21 [2021-11-23 01:52:41,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:52:41,536 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 01:52:41,536 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 1 case distinctions, treesize of input 39 treesize of output 21 [2021-11-23 01:52:41,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:52:41,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:52:41,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:52:41,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:52:41,753 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 01:52:41,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:52:41,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:52:41,760 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-23 01:52:41,760 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 221 treesize of output 160 [2021-11-23 01:52:41,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:52:41,777 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 01:52:41,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:52:41,782 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-23 01:52:41,782 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 213 treesize of output 132 [2021-11-23 01:52:41,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:52:41,896 INFO L354 Elim1Store]: treesize reduction 104, result has 28.3 percent of original size [2021-11-23 01:52:41,897 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 113 treesize of output 111 [2021-11-23 01:52:41,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:52:41,940 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 01:52:41,941 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 3 case distinctions, treesize of input 41 treesize of output 17 [2021-11-23 01:52:41,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:52:41,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:52:41,961 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 01:52:41,962 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 37 treesize of output 17 [2021-11-23 01:52:41,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:52:41,975 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 01:52:41,975 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 3 case distinctions, treesize of input 45 treesize of output 21 [2021-11-23 01:52:42,379 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-11-23 01:52:42,380 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 116 treesize of output 71 [2021-11-23 01:52:42,395 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-11-23 01:52:42,395 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 68 treesize of output 39 [2021-11-23 01:52:42,403 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 01:52:42,421 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:52:42,421 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 01:52:47,917 WARN L227 SmtUtils]: Spent 5.39s on a formula simplification. DAG size of input: 202 DAG size of output: 121 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-23 01:52:47,918 INFO L354 Elim1Store]: treesize reduction 4860, result has 22.7 percent of original size [2021-11-23 01:52:47,918 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 16 case distinctions, treesize of input 7028 treesize of output 6309 [2021-11-23 01:52:48,421 INFO L354 Elim1Store]: treesize reduction 376, result has 33.0 percent of original size [2021-11-23 01:52:48,422 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 16 case distinctions, treesize of input 1759 treesize of output 1398 [2021-11-23 01:52:48,562 INFO L354 Elim1Store]: treesize reduction 82, result has 58.8 percent of original size [2021-11-23 01:52:48,563 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 1398 treesize of output 1098 [2021-11-23 01:52:48,761 INFO L354 Elim1Store]: treesize reduction 23, result has 32.4 percent of original size [2021-11-23 01:52:48,762 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 47 treesize of output 42 [2021-11-23 01:52:48,967 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 01:52:48,967 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 17 [2021-11-23 01:52:49,190 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 01:52:49,191 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 17 [2021-11-23 01:52:49,376 INFO L354 Elim1Store]: treesize reduction 33, result has 2.9 percent of original size [2021-11-23 01:52:49,376 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 21 [2021-11-23 01:52:49,694 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 01:52:49,695 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 2 case distinctions, treesize of input 29 treesize of output 17 [2021-11-23 01:52:49,804 INFO L354 Elim1Store]: treesize reduction 33, result has 2.9 percent of original size [2021-11-23 01:52:49,805 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 21 [2021-11-23 01:52:49,936 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 01:52:49,936 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 31 [2021-11-23 01:52:50,178 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 17 [2021-11-23 01:52:50,478 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 01:52:50,484 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 2 case distinctions, treesize of input 29 treesize of output 17 [2021-11-23 01:52:50,629 INFO L354 Elim1Store]: treesize reduction 11, result has 67.6 percent of original size [2021-11-23 01:52:50,629 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 43 [2021-11-23 01:52:50,767 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-11-23 01:52:50,895 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 01:52:50,901 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 0 case distinctions, treesize of input 29 treesize of output 17 [2021-11-23 01:52:51,015 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 01:52:51,016 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 2 case distinctions, treesize of input 29 treesize of output 17 [2021-11-23 01:52:51,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:52:51,250 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 01:52:51,252 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 01:52:51,252 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2021-11-23 01:52:51,297 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 01:52:51,298 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2021-11-23 01:52:51,362 INFO L354 Elim1Store]: treesize reduction 22, result has 4.3 percent of original size [2021-11-23 01:52:51,363 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 4 case distinctions, treesize of input 37 treesize of output 21 [2021-11-23 01:52:51,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:52:51,410 INFO L354 Elim1Store]: treesize reduction 12, result has 47.8 percent of original size [2021-11-23 01:52:51,410 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 4 case distinctions, treesize of input 37 treesize of output 32 [2021-11-23 01:52:51,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:52:51,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:52:51,455 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 01:52:51,455 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 01:52:51,460 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 21 [2021-11-23 01:52:51,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 01:52:51,702 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 01:52:51,702 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 01:52:51,703 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2021-11-23 01:52:51,722 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-11-23 01:52:52,018 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 01:52:52,019 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 2 case distinctions, treesize of input 29 treesize of output 17 [2021-11-23 01:52:52,073 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 01:52:52,074 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 2 case distinctions, treesize of input 29 treesize of output 17 [2021-11-23 01:52:52,130 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-11-23 01:52:52,146 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 01:52:52,154 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 01:52:52,154 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 4 case distinctions, treesize of input 37 treesize of output 21 [2021-11-23 01:52:52,193 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 01:52:52,197 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 01:52:52,198 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 21 [2021-11-23 01:52:52,262 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 01:52:52,267 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 01:52:52,268 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 3 case distinctions, treesize of input 37 treesize of output 21 [2021-11-23 01:52:52,405 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2021-11-23 01:52:52,487 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 21 [2021-11-23 01:52:52,646 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2021-11-23 01:52:52,818 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 01:52:52,819 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 329 treesize of output 326