./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-acceleration/nested_1-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c9eaf76-3c41-4b57-9161-72976bb8a64c/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c9eaf76-3c41-4b57-9161-72976bb8a64c/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c9eaf76-3c41-4b57-9161-72976bb8a64c/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c9eaf76-3c41-4b57-9161-72976bb8a64c/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-acceleration/nested_1-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c9eaf76-3c41-4b57-9161-72976bb8a64c/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c9eaf76-3c41-4b57-9161-72976bb8a64c/bin/utaipan-vmNK8stdcF --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 8828f6ff39cd2bcfba4fe3d04f0119d60137bcad91eabef2e2b840cbd0802b98 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 02:37:59,527 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 02:37:59,530 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 02:37:59,567 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 02:37:59,569 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 02:37:59,573 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 02:37:59,576 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 02:37:59,581 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 02:37:59,584 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 02:37:59,590 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 02:37:59,592 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 02:37:59,594 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 02:37:59,594 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 02:37:59,597 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 02:37:59,600 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 02:37:59,603 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 02:37:59,605 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 02:37:59,606 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 02:37:59,611 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 02:37:59,619 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 02:37:59,621 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 02:37:59,623 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 02:37:59,626 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 02:37:59,627 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 02:37:59,637 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 02:37:59,637 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 02:37:59,638 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 02:37:59,640 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 02:37:59,641 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 02:37:59,642 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 02:37:59,643 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 02:37:59,644 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 02:37:59,646 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 02:37:59,648 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 02:37:59,649 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 02:37:59,650 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 02:37:59,650 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 02:37:59,651 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 02:37:59,651 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 02:37:59,652 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 02:37:59,652 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 02:37:59,653 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c9eaf76-3c41-4b57-9161-72976bb8a64c/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-13 02:37:59,706 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 02:37:59,707 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 02:37:59,708 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 02:37:59,709 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 02:37:59,709 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 02:37:59,709 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 02:37:59,709 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 02:37:59,710 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-13 02:37:59,717 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 02:37:59,717 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 02:37:59,718 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-13 02:37:59,718 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-13 02:37:59,719 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 02:37:59,719 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-13 02:37:59,719 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-13 02:37:59,719 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-13 02:37:59,720 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 02:37:59,721 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 02:37:59,721 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 02:37:59,721 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 02:37:59,721 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 02:37:59,721 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 02:37:59,722 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 02:37:59,722 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 02:37:59,722 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 02:37:59,722 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 02:37:59,723 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 02:37:59,723 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 02:37:59,723 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 02:37:59,726 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 02:37:59,726 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 02:37:59,726 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:37:59,727 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 02:37:59,727 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 02:37:59,727 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 02:37:59,728 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-13 02:37:59,728 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 02:37:59,728 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 02:37:59,728 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 02:37:59,728 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 02:37:59,729 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_8c9eaf76-3c41-4b57-9161-72976bb8a64c/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c9eaf76-3c41-4b57-9161-72976bb8a64c/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8828f6ff39cd2bcfba4fe3d04f0119d60137bcad91eabef2e2b840cbd0802b98 [2021-11-13 02:38:00,037 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 02:38:00,064 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 02:38:00,067 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 02:38:00,068 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 02:38:00,069 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 02:38:00,070 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c9eaf76-3c41-4b57-9161-72976bb8a64c/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/loop-acceleration/nested_1-2.c [2021-11-13 02:38:00,133 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c9eaf76-3c41-4b57-9161-72976bb8a64c/bin/utaipan-vmNK8stdcF/data/faea1bfb8/c7d7cfc255454c16bbb63f9f1c9298d8/FLAGd60d32715 [2021-11-13 02:38:00,673 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 02:38:00,674 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c9eaf76-3c41-4b57-9161-72976bb8a64c/sv-benchmarks/c/loop-acceleration/nested_1-2.c [2021-11-13 02:38:00,686 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c9eaf76-3c41-4b57-9161-72976bb8a64c/bin/utaipan-vmNK8stdcF/data/faea1bfb8/c7d7cfc255454c16bbb63f9f1c9298d8/FLAGd60d32715 [2021-11-13 02:38:01,020 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c9eaf76-3c41-4b57-9161-72976bb8a64c/bin/utaipan-vmNK8stdcF/data/faea1bfb8/c7d7cfc255454c16bbb63f9f1c9298d8 [2021-11-13 02:38:01,023 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 02:38:01,025 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 02:38:01,027 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 02:38:01,027 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 02:38:01,031 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 02:38:01,032 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:38:01" (1/1) ... [2021-11-13 02:38:01,033 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d08667e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:01, skipping insertion in model container [2021-11-13 02:38:01,033 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:38:01" (1/1) ... [2021-11-13 02:38:01,042 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 02:38:01,057 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 02:38:01,286 WARN L228 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_8c9eaf76-3c41-4b57-9161-72976bb8a64c/sv-benchmarks/c/loop-acceleration/nested_1-2.c[322,335] [2021-11-13 02:38:01,302 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:38:01,317 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 02:38:01,334 WARN L228 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_8c9eaf76-3c41-4b57-9161-72976bb8a64c/sv-benchmarks/c/loop-acceleration/nested_1-2.c[322,335] [2021-11-13 02:38:01,339 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:38:01,357 INFO L208 MainTranslator]: Completed translation [2021-11-13 02:38:01,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:01 WrapperNode [2021-11-13 02:38:01,358 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 02:38:01,360 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 02:38:01,360 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 02:38:01,360 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 02:38:01,369 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:01" (1/1) ... [2021-11-13 02:38:01,379 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:01" (1/1) ... [2021-11-13 02:38:01,401 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 02:38:01,403 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 02:38:01,403 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 02:38:01,404 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 02:38:01,413 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:01" (1/1) ... [2021-11-13 02:38:01,413 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:01" (1/1) ... [2021-11-13 02:38:01,430 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:01" (1/1) ... [2021-11-13 02:38:01,431 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:01" (1/1) ... [2021-11-13 02:38:01,434 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:01" (1/1) ... [2021-11-13 02:38:01,438 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:01" (1/1) ... [2021-11-13 02:38:01,439 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:01" (1/1) ... [2021-11-13 02:38:01,441 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 02:38:01,442 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 02:38:01,442 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 02:38:01,443 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 02:38:01,446 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:01" (1/1) ... [2021-11-13 02:38:01,454 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:38:01,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c9eaf76-3c41-4b57-9161-72976bb8a64c/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:38:01,488 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c9eaf76-3c41-4b57-9161-72976bb8a64c/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 02:38:01,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c9eaf76-3c41-4b57-9161-72976bb8a64c/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 02:38:01,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 02:38:01,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 02:38:01,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 02:38:01,540 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 02:38:01,819 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 02:38:01,819 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-13 02:38:01,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:38:01 BoogieIcfgContainer [2021-11-13 02:38:01,822 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 02:38:01,825 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 02:38:01,825 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 02:38:01,828 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 02:38:01,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:38:01" (1/3) ... [2021-11-13 02:38:01,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d311a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:38:01, skipping insertion in model container [2021-11-13 02:38:01,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:01" (2/3) ... [2021-11-13 02:38:01,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d311a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:38:01, skipping insertion in model container [2021-11-13 02:38:01,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:38:01" (3/3) ... [2021-11-13 02:38:01,832 INFO L111 eAbstractionObserver]: Analyzing ICFG nested_1-2.c [2021-11-13 02:38:01,841 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 02:38:01,841 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 02:38:01,907 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 02:38:01,920 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 [2021-11-13 02:38:01,920 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 02:38:01,942 INFO L276 IsEmpty]: Start isEmpty. Operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 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) [2021-11-13 02:38:01,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-13 02:38:01,952 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:38:01,953 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-13 02:38:01,954 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:38:01,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:38:01,968 INFO L85 PathProgramCache]: Analyzing trace with hash 2252617, now seen corresponding path program 1 times [2021-11-13 02:38:01,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:38:01,982 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128435307] [2021-11-13 02:38:01,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:38:01,983 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:38:02,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:38:02,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:38:02,246 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:38:02,247 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128435307] [2021-11-13 02:38:02,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128435307] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:38:02,248 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:38:02,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-13 02:38:02,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679322461] [2021-11-13 02:38:02,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:38:02,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 02:38:02,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:38:02,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 02:38:02,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:38:02,319 INFO L87 Difference]: Start difference. First operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 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) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:02,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:38:02,366 INFO L93 Difference]: Finished difference Result 15 states and 19 transitions. [2021-11-13 02:38:02,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:38:02,369 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 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 4 [2021-11-13 02:38:02,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:38:02,395 INFO L225 Difference]: With dead ends: 15 [2021-11-13 02:38:02,395 INFO L226 Difference]: Without dead ends: 8 [2021-11-13 02:38:02,406 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 [2021-11-13 02:38:02,410 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.61ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.95ms IncrementalHoareTripleChecker+Time [2021-11-13 02:38:02,411 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 8 Invalid, 9 Unknown, 0 Unchecked, 0.61ms Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 29.95ms Time] [2021-11-13 02:38:02,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-11-13 02:38:02,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2021-11-13 02:38:02,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 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) [2021-11-13 02:38:02,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2021-11-13 02:38:02,449 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 8 transitions. Word has length 4 [2021-11-13 02:38:02,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:38:02,449 INFO L470 AbstractCegarLoop]: Abstraction has 7 states and 8 transitions. [2021-11-13 02:38:02,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:02,450 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 8 transitions. [2021-11-13 02:38:02,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-13 02:38:02,451 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:38:02,451 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-13 02:38:02,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 02:38:02,453 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:38:02,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:38:02,457 INFO L85 PathProgramCache]: Analyzing trace with hash 2130164165, now seen corresponding path program 1 times [2021-11-13 02:38:02,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:38:02,458 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499350504] [2021-11-13 02:38:02,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:38:02,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:38:02,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:38:02,531 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:38:02,532 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:38:02,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499350504] [2021-11-13 02:38:02,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499350504] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:38:02,532 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:38:02,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 02:38:02,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314782838] [2021-11-13 02:38:02,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:38:02,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 02:38:02,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:38:02,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 02:38:02,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:38:02,536 INFO L87 Difference]: Start difference. First operand 7 states and 8 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:02,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:38:02,563 INFO L93 Difference]: Finished difference Result 13 states and 16 transitions. [2021-11-13 02:38:02,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:38:02,564 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-13 02:38:02,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:38:02,565 INFO L225 Difference]: With dead ends: 13 [2021-11-13 02:38:02,578 INFO L226 Difference]: Without dead ends: 8 [2021-11-13 02:38:02,579 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 [2021-11-13 02:38:02,582 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.30ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.04ms IncrementalHoareTripleChecker+Time [2021-11-13 02:38:02,583 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 5 Invalid, 8 Unknown, 0 Unchecked, 0.30ms Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 22.04ms Time] [2021-11-13 02:38:02,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-11-13 02:38:02,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-11-13 02:38:02,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:02,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2021-11-13 02:38:02,594 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 6 [2021-11-13 02:38:02,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:38:02,595 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2021-11-13 02:38:02,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:02,597 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2021-11-13 02:38:02,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-13 02:38:02,599 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:38:02,600 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:38:02,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-13 02:38:02,605 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:38:02,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:38:02,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1585602295, now seen corresponding path program 1 times [2021-11-13 02:38:02,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:38:02,606 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412228082] [2021-11-13 02:38:02,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:38:02,606 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:38:02,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:38:02,762 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:38:02,762 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:38:02,762 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412228082] [2021-11-13 02:38:02,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412228082] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 02:38:02,763 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849348904] [2021-11-13 02:38:02,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:38:02,764 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:38:02,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c9eaf76-3c41-4b57-9161-72976bb8a64c/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:38:02,771 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c9eaf76-3c41-4b57-9161-72976bb8a64c/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 02:38:02,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c9eaf76-3c41-4b57-9161-72976bb8a64c/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-13 02:38:02,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:38:02,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 02:38:02,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:38:02,955 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-13 02:38:02,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:38:03,032 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-13 02:38:03,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849348904] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:38:03,033 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2072250414] [2021-11-13 02:38:03,061 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2021-11-13 02:38:03,061 INFO L166 IcfgInterpreter]: Building call graph [2021-11-13 02:38:03,067 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-13 02:38:03,073 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-13 02:38:03,074 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-13 02:38:03,112 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:03,127 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 02:38:03,129 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:03,135 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-13 02:38:03,136 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 02:38:03,137 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:03,146 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-13 02:38:03,156 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 125 [2021-11-13 02:38:03,182 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_9|], 21=[|v_#valid_10|]} [2021-11-13 02:38:03,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:38:03,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:38:03,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:38:03,228 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-13 02:38:03,230 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:03,232 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-13 02:38:03,233 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:03,235 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-13 02:38:03,235 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-13 02:38:03,237 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:03,302 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:03,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:38:03,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:38:03,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:38:03,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:38:03,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:38:03,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:38:03,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:38:03,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:38:03,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:38:03,354 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-13 02:38:03,356 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:03,362 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-13 02:38:03,364 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:03,366 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-13 02:38:03,367 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-13 02:38:03,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:03,385 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:03,388 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:03,391 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-13 02:38:03,392 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-13 02:38:03,393 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:122, output treesize:97 [2021-11-13 02:38:03,400 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:03,405 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 102 [2021-11-13 02:38:03,410 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:03,416 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 102 [2021-11-13 02:38:03,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:03,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:03,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:03,548 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:03,567 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 268 [2021-11-13 02:38:03,574 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:03,630 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:03,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:03,634 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:03,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:03,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:03,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:03,659 INFO L180 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-11-13 02:38:03,662 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-13 02:38:03,672 INFO L180 QuantifierPusher]: treesize reduction 37, result has 54.9 percent of original size [2021-11-13 02:38:03,678 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-13 02:38:03,682 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:03,694 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:03,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:03,748 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:03,769 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 02:38:03,773 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:03,792 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 114 [2021-11-13 02:38:03,802 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 168 [2021-11-13 02:38:03,816 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:03,822 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 177 [2021-11-13 02:38:03,831 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:03,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:03,875 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:03,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:03,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:03,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:03,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:03,929 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:03,940 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 98 [2021-11-13 02:38:03,954 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:03,967 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-11-13 02:38:03,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:04,007 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:04,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:04,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:04,014 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:04,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:04,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:04,033 INFO L180 QuantifierPusher]: treesize reduction 30, result has 58.9 percent of original size [2021-11-13 02:38:04,039 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-13 02:38:04,043 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:04,046 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-13 02:38:04,050 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:04,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:04,067 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:04,079 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:04,087 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 118 [2021-11-13 02:38:04,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:04,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:04,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:04,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:04,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:04,130 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:04,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:04,145 INFO L180 QuantifierPusher]: treesize reduction 30, result has 60.0 percent of original size [2021-11-13 02:38:04,149 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-13 02:38:04,155 INFO L180 QuantifierPusher]: treesize reduction 31, result has 59.2 percent of original size [2021-11-13 02:38:04,158 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-13 02:38:04,172 INFO L180 QuantifierPusher]: treesize reduction 30, result has 58.9 percent of original size [2021-11-13 02:38:04,175 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-13 02:38:04,178 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:04,181 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-11-13 02:38:04,184 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:04,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:04,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:04,212 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:04,218 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-11-13 02:38:04,223 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:04,242 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:04,243 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:04,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:04,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:04,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:04,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:04,258 INFO L180 QuantifierPusher]: treesize reduction 30, result has 60.0 percent of original size [2021-11-13 02:38:04,262 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-13 02:38:04,264 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-13 02:38:04,678 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 02:38:04,679 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 02:38:04,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2021-11-13 02:38:04,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642306104] [2021-11-13 02:38:04,679 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 02:38:04,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 02:38:04,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:38:04,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 02:38:04,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-11-13 02:38:04,681 INFO L87 Difference]: Start difference. First operand 8 states and 9 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:04,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:38:04,900 INFO L93 Difference]: Finished difference Result 27 states and 39 transitions. [2021-11-13 02:38:04,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 02:38:04,901 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 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 7 [2021-11-13 02:38:04,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:38:04,902 INFO L225 Difference]: With dead ends: 27 [2021-11-13 02:38:04,902 INFO L226 Difference]: Without dead ends: 21 [2021-11-13 02:38:04,903 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2021-11-13 02:38:04,905 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 9 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 53.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.66ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 67.38ms IncrementalHoareTripleChecker+Time [2021-11-13 02:38:04,905 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 8 Invalid, 51 Unknown, 0 Unchecked, 2.66ms Time], IncrementalHoareTripleChecker [22 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 67.38ms Time] [2021-11-13 02:38:04,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-11-13 02:38:04,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-11-13 02:38:04,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:04,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2021-11-13 02:38:04,917 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 7 [2021-11-13 02:38:04,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:38:04,917 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2021-11-13 02:38:04,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:04,919 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2021-11-13 02:38:04,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-13 02:38:04,920 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:38:04,920 INFO L514 BasicCegarLoop]: trace histogram [8, 4, 4, 1, 1, 1, 1] [2021-11-13 02:38:04,973 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c9eaf76-3c41-4b57-9161-72976bb8a64c/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-13 02:38:05,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c9eaf76-3c41-4b57-9161-72976bb8a64c/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:38:05,135 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:38:05,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:38:05,135 INFO L85 PathProgramCache]: Analyzing trace with hash -140644807, now seen corresponding path program 2 times [2021-11-13 02:38:05,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:38:05,136 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142121432] [2021-11-13 02:38:05,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:38:05,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:38:05,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:38:05,236 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 31 proven. 3 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-11-13 02:38:05,236 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:38:05,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142121432] [2021-11-13 02:38:05,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142121432] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 02:38:05,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853563105] [2021-11-13 02:38:05,237 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 02:38:05,237 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:38:05,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c9eaf76-3c41-4b57-9161-72976bb8a64c/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:38:05,238 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c9eaf76-3c41-4b57-9161-72976bb8a64c/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 02:38:05,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c9eaf76-3c41-4b57-9161-72976bb8a64c/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-13 02:38:05,322 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-13 02:38:05,322 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 02:38:05,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 02:38:05,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:38:05,419 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 31 proven. 3 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-11-13 02:38:05,419 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:38:05,489 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 31 proven. 3 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-11-13 02:38:05,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853563105] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:38:05,489 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2009370075] [2021-11-13 02:38:05,492 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2021-11-13 02:38:05,492 INFO L166 IcfgInterpreter]: Building call graph [2021-11-13 02:38:05,492 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-13 02:38:05,492 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-13 02:38:05,493 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-13 02:38:05,499 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:05,500 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 02:38:05,501 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:05,502 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-13 02:38:05,502 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 02:38:05,503 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:05,503 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-13 02:38:05,506 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 125 [2021-11-13 02:38:05,512 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_10|], 21=[|v_#valid_11|]} [2021-11-13 02:38:05,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:38:05,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:38:05,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:38:05,527 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-13 02:38:05,528 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:05,529 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-13 02:38:05,530 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:05,530 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-13 02:38:05,531 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-13 02:38:05,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:05,538 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:05,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:38:05,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:38:05,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:38:05,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:38:05,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:38:05,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:38:05,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:38:05,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:38:05,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:38:05,580 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-13 02:38:05,581 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:05,585 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-13 02:38:05,586 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:05,587 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-13 02:38:05,587 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-13 02:38:05,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:05,594 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:05,597 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:05,601 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-13 02:38:05,602 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-13 02:38:05,602 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:122, output treesize:97 [2021-11-13 02:38:05,607 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:05,612 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 102 [2021-11-13 02:38:05,617 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:05,623 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-11-13 02:38:05,627 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:05,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:05,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:05,680 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:05,697 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 275 [2021-11-13 02:38:05,703 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:05,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:05,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:05,762 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:05,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:05,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:05,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:05,802 INFO L180 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-11-13 02:38:05,805 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-13 02:38:05,812 INFO L180 QuantifierPusher]: treesize reduction 37, result has 54.9 percent of original size [2021-11-13 02:38:05,815 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-13 02:38:05,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:05,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:05,833 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:05,851 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:05,864 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 02:38:05,868 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:05,875 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 114 [2021-11-13 02:38:05,881 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 168 [2021-11-13 02:38:05,889 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:05,896 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 177 [2021-11-13 02:38:05,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:05,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:05,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:05,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:05,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:05,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:05,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:05,948 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:05,957 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 98 [2021-11-13 02:38:05,964 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:05,972 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-11-13 02:38:05,977 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:06,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:06,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:06,005 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:06,006 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:06,007 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:06,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:06,018 INFO L180 QuantifierPusher]: treesize reduction 30, result has 58.9 percent of original size [2021-11-13 02:38:06,020 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-13 02:38:06,022 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:06,024 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-13 02:38:06,026 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:06,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:06,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:06,047 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:06,052 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 118 [2021-11-13 02:38:06,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:06,073 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:06,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:06,077 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:06,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:06,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:06,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:06,088 INFO L180 QuantifierPusher]: treesize reduction 30, result has 60.0 percent of original size [2021-11-13 02:38:06,090 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-13 02:38:06,094 INFO L180 QuantifierPusher]: treesize reduction 31, result has 59.2 percent of original size [2021-11-13 02:38:06,096 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-13 02:38:06,105 INFO L180 QuantifierPusher]: treesize reduction 30, result has 58.9 percent of original size [2021-11-13 02:38:06,113 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-13 02:38:06,115 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:06,117 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-11-13 02:38:06,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:06,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:06,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:06,142 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:06,148 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-11-13 02:38:06,151 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:06,167 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:06,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:06,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:06,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:06,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:06,175 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:06,181 INFO L180 QuantifierPusher]: treesize reduction 30, result has 60.0 percent of original size [2021-11-13 02:38:06,184 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-13 02:38:06,186 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-13 02:38:06,477 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 02:38:06,477 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 02:38:06,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2021-11-13 02:38:06,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254605960] [2021-11-13 02:38:06,478 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 02:38:06,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 02:38:06,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:38:06,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 02:38:06,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-11-13 02:38:06,480 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:06,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:38:06,584 INFO L93 Difference]: Finished difference Result 53 states and 76 transitions. [2021-11-13 02:38:06,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 02:38:06,585 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2021-11-13 02:38:06,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:38:06,586 INFO L225 Difference]: With dead ends: 53 [2021-11-13 02:38:06,586 INFO L226 Difference]: Without dead ends: 37 [2021-11-13 02:38:06,586 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2021-11-13 02:38:06,587 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.82ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.70ms IncrementalHoareTripleChecker+Time [2021-11-13 02:38:06,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 40 Unknown, 0 Unchecked, 0.82ms Time], IncrementalHoareTripleChecker [10 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 40.70ms Time] [2021-11-13 02:38:06,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-11-13 02:38:06,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-11-13 02:38:06,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 36 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:06,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2021-11-13 02:38:06,597 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 20 [2021-11-13 02:38:06,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:38:06,597 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2021-11-13 02:38:06,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:06,598 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2021-11-13 02:38:06,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-13 02:38:06,599 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:38:06,599 INFO L514 BasicCegarLoop]: trace histogram [24, 4, 4, 1, 1, 1, 1] [2021-11-13 02:38:06,638 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c9eaf76-3c41-4b57-9161-72976bb8a64c/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-13 02:38:06,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c9eaf76-3c41-4b57-9161-72976bb8a64c/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:38:06,826 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:38:06,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:38:06,827 INFO L85 PathProgramCache]: Analyzing trace with hash 500624441, now seen corresponding path program 3 times [2021-11-13 02:38:06,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:38:06,827 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174435833] [2021-11-13 02:38:06,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:38:06,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:38:06,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:38:07,019 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 151 proven. 21 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2021-11-13 02:38:07,020 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:38:07,020 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174435833] [2021-11-13 02:38:07,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174435833] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 02:38:07,020 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797361999] [2021-11-13 02:38:07,020 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-13 02:38:07,021 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:38:07,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c9eaf76-3c41-4b57-9161-72976bb8a64c/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:38:07,022 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c9eaf76-3c41-4b57-9161-72976bb8a64c/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 02:38:07,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c9eaf76-3c41-4b57-9161-72976bb8a64c/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-13 02:38:07,090 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-13 02:38:07,090 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 02:38:07,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-13 02:38:07,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:38:07,249 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 0 proven. 304 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-13 02:38:07,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:38:07,425 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 0 proven. 202 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2021-11-13 02:38:07,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1797361999] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:38:07,426 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1871009397] [2021-11-13 02:38:07,428 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2021-11-13 02:38:07,428 INFO L166 IcfgInterpreter]: Building call graph [2021-11-13 02:38:07,429 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-13 02:38:07,429 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-13 02:38:07,429 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-13 02:38:07,435 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:07,436 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 02:38:07,436 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:07,437 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-13 02:38:07,438 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 02:38:07,438 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:07,439 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-13 02:38:07,442 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 125 [2021-11-13 02:38:07,450 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_11|], 21=[|v_#valid_12|]} [2021-11-13 02:38:07,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:38:07,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:38:07,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:38:07,464 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-13 02:38:07,465 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:07,468 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-13 02:38:07,469 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:07,470 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-13 02:38:07,470 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-13 02:38:07,471 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:07,475 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:07,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:38:07,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:38:07,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:38:07,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:38:07,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:38:07,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:38:07,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:38:07,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:38:07,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:38:07,497 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-13 02:38:07,498 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:07,502 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-13 02:38:07,503 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:07,503 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-13 02:38:07,504 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-13 02:38:07,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:07,508 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:07,510 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:07,512 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-13 02:38:07,513 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-13 02:38:07,513 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:122, output treesize:97 [2021-11-13 02:38:07,517 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:07,521 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 102 [2021-11-13 02:38:07,525 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:07,532 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-11-13 02:38:07,535 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:07,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:07,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:07,588 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:07,598 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 275 [2021-11-13 02:38:07,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:07,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:07,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:07,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:07,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:07,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:07,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:07,663 INFO L180 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-11-13 02:38:07,665 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-13 02:38:07,671 INFO L180 QuantifierPusher]: treesize reduction 37, result has 54.9 percent of original size [2021-11-13 02:38:07,674 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-13 02:38:07,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:07,685 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:07,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:07,709 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:07,722 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 02:38:07,725 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:07,732 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 114 [2021-11-13 02:38:07,736 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 168 [2021-11-13 02:38:07,741 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:07,746 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 177 [2021-11-13 02:38:07,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:07,773 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:07,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:07,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:07,778 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:07,781 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:07,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:07,799 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:07,803 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 98 [2021-11-13 02:38:07,809 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:07,814 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-11-13 02:38:07,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:07,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:07,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:07,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:07,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:07,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:07,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:07,872 INFO L180 QuantifierPusher]: treesize reduction 30, result has 58.9 percent of original size [2021-11-13 02:38:07,874 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-13 02:38:07,876 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:07,878 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-11-13 02:38:07,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:07,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:07,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:07,902 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:07,907 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-11-13 02:38:07,911 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:07,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:07,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:07,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:07,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:07,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:07,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:07,948 INFO L180 QuantifierPusher]: treesize reduction 30, result has 60.0 percent of original size [2021-11-13 02:38:07,950 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-13 02:38:07,956 INFO L180 QuantifierPusher]: treesize reduction 31, result has 59.2 percent of original size [2021-11-13 02:38:07,958 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-13 02:38:07,968 INFO L180 QuantifierPusher]: treesize reduction 30, result has 58.9 percent of original size [2021-11-13 02:38:07,971 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-13 02:38:07,973 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:07,975 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-13 02:38:07,977 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:07,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:07,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:07,999 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:08,003 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 118 [2021-11-13 02:38:08,007 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:08,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:08,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:08,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:08,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:08,050 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:08,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:08,058 INFO L180 QuantifierPusher]: treesize reduction 30, result has 60.0 percent of original size [2021-11-13 02:38:08,060 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-13 02:38:08,062 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-13 02:38:08,431 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 02:38:08,431 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 02:38:08,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 4] total 17 [2021-11-13 02:38:08,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486874338] [2021-11-13 02:38:08,432 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 02:38:08,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-13 02:38:08,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:38:08,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-13 02:38:08,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2021-11-13 02:38:08,434 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:09,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:38:09,678 INFO L93 Difference]: Finished difference Result 96 states and 115 transitions. [2021-11-13 02:38:09,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-11-13 02:38:09,678 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-11-13 02:38:09,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:38:09,679 INFO L225 Difference]: With dead ends: 96 [2021-11-13 02:38:09,680 INFO L226 Difference]: Without dead ends: 67 [2021-11-13 02:38:09,683 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 97 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1325 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=436, Invalid=4394, Unknown=0, NotChecked=0, Total=4830 [2021-11-13 02:38:09,684 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 6 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 282.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.98ms SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 348.53ms IncrementalHoareTripleChecker+Time [2021-11-13 02:38:09,684 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 17 Invalid, 470 Unknown, 0 Unchecked, 5.98ms Time], IncrementalHoareTripleChecker [52 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 348.53ms Time] [2021-11-13 02:38:09,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-11-13 02:38:09,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 50. [2021-11-13 02:38:09,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.1224489795918366) internal successors, (55), 49 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:09,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 55 transitions. [2021-11-13 02:38:09,696 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 55 transitions. Word has length 36 [2021-11-13 02:38:09,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:38:09,696 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 55 transitions. [2021-11-13 02:38:09,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:09,697 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 55 transitions. [2021-11-13 02:38:09,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-13 02:38:09,698 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:38:09,699 INFO L514 BasicCegarLoop]: trace histogram [35, 5, 5, 1, 1, 1, 1] [2021-11-13 02:38:09,726 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c9eaf76-3c41-4b57-9161-72976bb8a64c/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-13 02:38:09,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c9eaf76-3c41-4b57-9161-72976bb8a64c/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2021-11-13 02:38:09,914 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:38:09,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:38:09,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1861680311, now seen corresponding path program 4 times [2021-11-13 02:38:09,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:38:09,916 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433926653] [2021-11-13 02:38:09,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:38:09,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:38:09,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:38:10,095 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 261 proven. 28 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked. [2021-11-13 02:38:10,095 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:38:10,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433926653] [2021-11-13 02:38:10,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433926653] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 02:38:10,096 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021632701] [2021-11-13 02:38:10,096 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-13 02:38:10,096 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:38:10,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c9eaf76-3c41-4b57-9161-72976bb8a64c/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:38:10,102 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c9eaf76-3c41-4b57-9161-72976bb8a64c/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 02:38:10,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c9eaf76-3c41-4b57-9161-72976bb8a64c/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-13 02:38:10,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:38:10,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-13 02:38:10,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:38:10,489 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 0 proven. 655 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2021-11-13 02:38:10,489 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:38:10,792 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 0 proven. 655 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2021-11-13 02:38:10,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021632701] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:38:10,792 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [763490622] [2021-11-13 02:38:10,794 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2021-11-13 02:38:10,794 INFO L166 IcfgInterpreter]: Building call graph [2021-11-13 02:38:10,795 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-13 02:38:10,795 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-13 02:38:10,795 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-13 02:38:10,800 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:10,801 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 02:38:10,802 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:10,803 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-13 02:38:10,803 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 02:38:10,804 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:10,804 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-13 02:38:10,806 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 125 [2021-11-13 02:38:10,809 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_12|], 21=[|v_#valid_13|]} [2021-11-13 02:38:10,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:38:10,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:38:10,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:38:10,823 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-13 02:38:10,823 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:10,824 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-13 02:38:10,825 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:10,825 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-13 02:38:10,825 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-13 02:38:10,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:10,829 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:10,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:38:10,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:38:10,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:38:10,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:38:10,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:38:10,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:38:10,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:38:10,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:38:10,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:38:10,850 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-13 02:38:10,851 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:10,854 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-13 02:38:10,855 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:10,856 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-13 02:38:10,856 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-13 02:38:10,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:10,860 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:10,862 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:10,863 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-13 02:38:10,864 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-13 02:38:10,864 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:122, output treesize:97 [2021-11-13 02:38:10,870 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:10,874 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 102 [2021-11-13 02:38:10,876 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:10,879 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-11-13 02:38:10,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:10,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:10,903 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:10,934 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:10,942 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 275 [2021-11-13 02:38:10,947 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:10,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:10,983 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:10,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:10,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:10,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:10,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:10,999 INFO L180 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-11-13 02:38:11,001 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-13 02:38:11,005 INFO L180 QuantifierPusher]: treesize reduction 37, result has 54.9 percent of original size [2021-11-13 02:38:11,007 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-13 02:38:11,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:11,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:11,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:11,036 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:11,043 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 02:38:11,046 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:11,052 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 114 [2021-11-13 02:38:11,055 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 168 [2021-11-13 02:38:11,063 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:11,067 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 177 [2021-11-13 02:38:11,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:11,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:11,103 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:11,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:11,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:11,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:11,118 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:11,127 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:11,132 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 98 [2021-11-13 02:38:11,137 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:11,141 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-11-13 02:38:11,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:11,165 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:11,167 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:11,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:11,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:11,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:11,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:11,183 INFO L180 QuantifierPusher]: treesize reduction 30, result has 58.9 percent of original size [2021-11-13 02:38:11,186 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-13 02:38:11,188 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:11,191 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-13 02:38:11,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:11,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:11,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:11,214 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:11,220 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 118 [2021-11-13 02:38:11,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:11,243 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:11,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:11,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:11,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:11,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:11,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:11,257 INFO L180 QuantifierPusher]: treesize reduction 30, result has 60.0 percent of original size [2021-11-13 02:38:11,260 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-13 02:38:11,264 INFO L180 QuantifierPusher]: treesize reduction 31, result has 59.2 percent of original size [2021-11-13 02:38:11,266 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-13 02:38:11,275 INFO L180 QuantifierPusher]: treesize reduction 30, result has 58.9 percent of original size [2021-11-13 02:38:11,277 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-13 02:38:11,279 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:11,281 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-11-13 02:38:11,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:11,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:11,311 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:11,323 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:11,328 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-11-13 02:38:11,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:11,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:11,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:11,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:11,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:11,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:11,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:11,366 INFO L180 QuantifierPusher]: treesize reduction 30, result has 60.0 percent of original size [2021-11-13 02:38:11,370 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-13 02:38:11,372 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-13 02:38:11,747 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 02:38:11,748 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 02:38:11,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 22 [2021-11-13 02:38:11,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548137058] [2021-11-13 02:38:11,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 02:38:11,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-13 02:38:11,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:38:11,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-13 02:38:11,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=507, Unknown=0, NotChecked=0, Total=600 [2021-11-13 02:38:11,751 INFO L87 Difference]: Start difference. First operand 50 states and 55 transitions. Second operand has 22 states, 22 states have (on average 2.272727272727273) internal successors, (50), 22 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:20,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:38:20,935 INFO L93 Difference]: Finished difference Result 175 states and 209 transitions. [2021-11-13 02:38:20,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2021-11-13 02:38:20,936 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.272727272727273) internal successors, (50), 22 states have internal predecessors, (50), 0 states have call successors, (0), 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 49 [2021-11-13 02:38:20,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:38:20,938 INFO L225 Difference]: With dead ends: 175 [2021-11-13 02:38:20,938 INFO L226 Difference]: Without dead ends: 135 [2021-11-13 02:38:20,952 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5464 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=2248, Invalid=13502, Unknown=0, NotChecked=0, Total=15750 [2021-11-13 02:38:20,953 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 25 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 706 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 566.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.97ms SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 659.22ms IncrementalHoareTripleChecker+Time [2021-11-13 02:38:20,953 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 22 Invalid, 910 Unknown, 0 Unchecked, 6.97ms Time], IncrementalHoareTripleChecker [204 Valid, 706 Invalid, 0 Unknown, 0 Unchecked, 659.22ms Time] [2021-11-13 02:38:20,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-11-13 02:38:20,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2021-11-13 02:38:20,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 134 states have (on average 1.1044776119402986) internal successors, (148), 134 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:20,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 148 transitions. [2021-11-13 02:38:20,992 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 148 transitions. Word has length 49 [2021-11-13 02:38:20,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:38:20,993 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 148 transitions. [2021-11-13 02:38:20,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.272727272727273) internal successors, (50), 22 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:20,993 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 148 transitions. [2021-11-13 02:38:20,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-13 02:38:20,998 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:38:20,998 INFO L514 BasicCegarLoop]: trace histogram [104, 13, 13, 1, 1, 1, 1] [2021-11-13 02:38:21,024 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c9eaf76-3c41-4b57-9161-72976bb8a64c/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-11-13 02:38:21,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c9eaf76-3c41-4b57-9161-72976bb8a64c/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:38:21,210 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:38:21,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:38:21,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1131365013, now seen corresponding path program 5 times [2021-11-13 02:38:21,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:38:21,211 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668221335] [2021-11-13 02:38:21,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:38:21,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:38:21,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:38:21,583 INFO L134 CoverageAnalysis]: Checked inductivity of 6877 backedges. 985 proven. 36 refuted. 0 times theorem prover too weak. 5856 trivial. 0 not checked. [2021-11-13 02:38:21,583 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:38:21,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668221335] [2021-11-13 02:38:21,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668221335] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 02:38:21,584 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874660684] [2021-11-13 02:38:21,584 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 02:38:21,584 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:38:21,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c9eaf76-3c41-4b57-9161-72976bb8a64c/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:38:21,585 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c9eaf76-3c41-4b57-9161-72976bb8a64c/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 02:38:21,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c9eaf76-3c41-4b57-9161-72976bb8a64c/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-13 02:38:21,808 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-11-13 02:38:21,808 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 02:38:21,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-13 02:38:21,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:38:22,149 INFO L134 CoverageAnalysis]: Checked inductivity of 6877 backedges. 985 proven. 36 refuted. 0 times theorem prover too weak. 5856 trivial. 0 not checked. [2021-11-13 02:38:22,149 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:38:22,645 INFO L134 CoverageAnalysis]: Checked inductivity of 6877 backedges. 985 proven. 36 refuted. 0 times theorem prover too weak. 5856 trivial. 0 not checked. [2021-11-13 02:38:22,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [874660684] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:38:22,646 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1229514964] [2021-11-13 02:38:22,648 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2021-11-13 02:38:22,649 INFO L166 IcfgInterpreter]: Building call graph [2021-11-13 02:38:22,649 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-13 02:38:22,649 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-13 02:38:22,649 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-13 02:38:22,653 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:22,654 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 02:38:22,655 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:22,655 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-13 02:38:22,656 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 02:38:22,657 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:22,657 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-13 02:38:22,659 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 125 [2021-11-13 02:38:22,665 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_13|], 21=[|v_#valid_14|]} [2021-11-13 02:38:22,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:38:22,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:38:22,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:38:22,681 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-13 02:38:22,682 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:22,682 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-13 02:38:22,683 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:22,683 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-13 02:38:22,684 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-13 02:38:22,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:22,688 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:22,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:38:22,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:38:22,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:38:22,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:38:22,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:38:22,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:38:22,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:38:22,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:38:22,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:38:22,717 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-13 02:38:22,718 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:22,720 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-13 02:38:22,721 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:22,721 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-13 02:38:22,722 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-13 02:38:22,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:22,726 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:22,727 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:22,729 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-13 02:38:22,729 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-13 02:38:22,729 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:122, output treesize:97 [2021-11-13 02:38:22,732 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:22,734 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 102 [2021-11-13 02:38:22,737 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:22,739 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 102 [2021-11-13 02:38:22,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:22,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:22,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:22,810 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:22,816 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 268 [2021-11-13 02:38:22,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:22,854 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:22,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:22,856 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:22,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:22,858 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:22,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:22,868 INFO L180 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-11-13 02:38:22,869 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-13 02:38:22,873 INFO L180 QuantifierPusher]: treesize reduction 37, result has 54.9 percent of original size [2021-11-13 02:38:22,874 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-13 02:38:22,876 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:22,881 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:22,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:22,898 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:22,902 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 02:38:22,904 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:22,913 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 114 [2021-11-13 02:38:22,916 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 168 [2021-11-13 02:38:22,919 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:22,922 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 177 [2021-11-13 02:38:22,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:22,942 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:22,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:22,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:22,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:22,946 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:22,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:22,957 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:22,961 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 98 [2021-11-13 02:38:22,964 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:22,967 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-11-13 02:38:22,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:23,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:23,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:23,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:23,026 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:23,027 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:23,030 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:23,035 INFO L180 QuantifierPusher]: treesize reduction 30, result has 58.9 percent of original size [2021-11-13 02:38:23,051 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-13 02:38:23,052 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:23,054 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-13 02:38:23,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:23,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:23,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:23,080 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:23,085 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 118 [2021-11-13 02:38:23,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:23,102 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:23,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:23,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:23,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:23,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:23,109 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:23,115 INFO L180 QuantifierPusher]: treesize reduction 30, result has 60.0 percent of original size [2021-11-13 02:38:23,116 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-13 02:38:23,120 INFO L180 QuantifierPusher]: treesize reduction 31, result has 59.2 percent of original size [2021-11-13 02:38:23,121 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-13 02:38:23,130 INFO L180 QuantifierPusher]: treesize reduction 30, result has 58.9 percent of original size [2021-11-13 02:38:23,131 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-13 02:38:23,133 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:23,136 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-11-13 02:38:23,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:23,143 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:23,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:23,156 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:23,161 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-11-13 02:38:23,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:23,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:23,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:23,184 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:23,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:23,198 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:23,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:23,209 INFO L180 QuantifierPusher]: treesize reduction 30, result has 60.0 percent of original size [2021-11-13 02:38:23,210 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-13 02:38:23,212 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-13 02:38:23,574 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 02:38:23,575 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 02:38:23,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 21 [2021-11-13 02:38:23,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782745455] [2021-11-13 02:38:23,575 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 02:38:23,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-13 02:38:23,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:38:23,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-13 02:38:23,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-11-13 02:38:23,579 INFO L87 Difference]: Start difference. First operand 135 states and 148 transitions. Second operand has 21 states, 21 states have (on average 1.380952380952381) internal successors, (29), 21 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:23,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:38:23,707 INFO L93 Difference]: Finished difference Result 285 states and 336 transitions. [2021-11-13 02:38:23,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-13 02:38:23,707 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.380952380952381) internal successors, (29), 21 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2021-11-13 02:38:23,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:38:23,709 INFO L225 Difference]: With dead ends: 285 [2021-11-13 02:38:23,709 INFO L226 Difference]: Without dead ends: 161 [2021-11-13 02:38:23,711 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 388 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-11-13 02:38:23,711 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 79.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.03ms SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 98.27ms IncrementalHoareTripleChecker+Time [2021-11-13 02:38:23,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 161 Unknown, 0 Unchecked, 1.03ms Time], IncrementalHoareTripleChecker [30 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 98.27ms Time] [2021-11-13 02:38:23,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-11-13 02:38:23,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2021-11-13 02:38:23,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 160 states have (on average 1.0875) internal successors, (174), 160 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:23,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 174 transitions. [2021-11-13 02:38:23,739 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 174 transitions. Word has length 134 [2021-11-13 02:38:23,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:38:23,739 INFO L470 AbstractCegarLoop]: Abstraction has 161 states and 174 transitions. [2021-11-13 02:38:23,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.380952380952381) internal successors, (29), 21 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:23,740 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 174 transitions. [2021-11-13 02:38:23,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-11-13 02:38:23,743 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:38:23,743 INFO L514 BasicCegarLoop]: trace histogram [130, 13, 13, 1, 1, 1, 1] [2021-11-13 02:38:23,752 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c9eaf76-3c41-4b57-9161-72976bb8a64c/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-13 02:38:23,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c9eaf76-3c41-4b57-9161-72976bb8a64c/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable202 [2021-11-13 02:38:23,948 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:38:23,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:38:23,949 INFO L85 PathProgramCache]: Analyzing trace with hash -149528107, now seen corresponding path program 6 times [2021-11-13 02:38:23,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:38:23,949 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098292016] [2021-11-13 02:38:23,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:38:23,949 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:38:24,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:38:24,384 INFO L134 CoverageAnalysis]: Checked inductivity of 10244 backedges. 0 proven. 9529 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2021-11-13 02:38:24,384 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:38:24,384 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098292016] [2021-11-13 02:38:24,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098292016] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 02:38:24,384 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405344374] [2021-11-13 02:38:24,385 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-13 02:38:24,385 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:38:24,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c9eaf76-3c41-4b57-9161-72976bb8a64c/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:38:24,387 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c9eaf76-3c41-4b57-9161-72976bb8a64c/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 02:38:24,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c9eaf76-3c41-4b57-9161-72976bb8a64c/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-13 02:38:24,546 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-13 02:38:24,546 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 02:38:24,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-13 02:38:24,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:38:25,515 INFO L134 CoverageAnalysis]: Checked inductivity of 10244 backedges. 0 proven. 9529 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2021-11-13 02:38:25,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:38:26,417 INFO L134 CoverageAnalysis]: Checked inductivity of 10244 backedges. 0 proven. 9529 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2021-11-13 02:38:26,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [405344374] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:38:26,418 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [857446203] [2021-11-13 02:38:26,420 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2021-11-13 02:38:26,421 INFO L166 IcfgInterpreter]: Building call graph [2021-11-13 02:38:26,421 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-13 02:38:26,421 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-13 02:38:26,422 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-13 02:38:26,425 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:26,426 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 02:38:26,427 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:26,427 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-13 02:38:26,428 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 02:38:26,428 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:26,429 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-13 02:38:26,430 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 125 [2021-11-13 02:38:26,433 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_14|], 21=[|v_#valid_15|]} [2021-11-13 02:38:26,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:38:26,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:38:26,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:38:26,443 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-13 02:38:26,443 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:26,444 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-13 02:38:26,444 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:26,445 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-13 02:38:26,445 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-13 02:38:26,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:26,449 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:26,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:38:26,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:38:26,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:38:26,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:38:26,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:38:26,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:38:26,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:38:26,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:38:26,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:38:26,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-13 02:38:26,466 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:26,468 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-13 02:38:26,469 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:26,470 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-13 02:38:26,470 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-13 02:38:26,471 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:26,474 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:26,475 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:26,476 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-13 02:38:26,477 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-13 02:38:26,477 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:122, output treesize:97 [2021-11-13 02:38:26,479 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:26,481 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 102 [2021-11-13 02:38:26,484 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:26,486 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 102 [2021-11-13 02:38:26,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:26,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:26,506 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:26,521 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:26,527 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 268 [2021-11-13 02:38:26,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:26,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:26,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:26,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:26,562 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:26,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:26,570 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:26,579 INFO L180 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-11-13 02:38:26,581 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-13 02:38:26,585 INFO L180 QuantifierPusher]: treesize reduction 37, result has 54.9 percent of original size [2021-11-13 02:38:26,586 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-13 02:38:26,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:26,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:26,621 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:26,632 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:26,638 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 02:38:26,641 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:26,645 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 114 [2021-11-13 02:38:26,649 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 168 [2021-11-13 02:38:26,655 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:26,657 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 168 [2021-11-13 02:38:26,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:26,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:26,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:26,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:26,678 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:26,679 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:26,683 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:26,689 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:26,692 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 102 [2021-11-13 02:38:26,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:26,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:26,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:26,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:26,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:26,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:26,711 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:26,715 INFO L180 QuantifierPusher]: treesize reduction 30, result has 61.5 percent of original size [2021-11-13 02:38:26,717 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-11-13 02:38:26,720 INFO L180 QuantifierPusher]: treesize reduction 31, result has 60.8 percent of original size [2021-11-13 02:38:26,722 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-13 02:38:26,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:26,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:26,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:26,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:26,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:26,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:26,751 INFO L180 QuantifierPusher]: treesize reduction 30, result has 58.9 percent of original size [2021-11-13 02:38:26,752 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-13 02:38:26,754 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:26,755 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-13 02:38:26,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:26,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:26,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:26,772 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:26,775 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 118 [2021-11-13 02:38:26,777 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:26,789 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:26,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:26,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:26,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:26,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:26,795 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:26,799 INFO L180 QuantifierPusher]: treesize reduction 30, result has 60.0 percent of original size [2021-11-13 02:38:26,801 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-13 02:38:26,804 INFO L180 QuantifierPusher]: treesize reduction 31, result has 59.2 percent of original size [2021-11-13 02:38:26,807 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-13 02:38:26,815 INFO L180 QuantifierPusher]: treesize reduction 30, result has 58.9 percent of original size [2021-11-13 02:38:26,816 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-13 02:38:26,819 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:26,820 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-11-13 02:38:26,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:26,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:26,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:26,837 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:26,840 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-11-13 02:38:26,843 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:26,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:26,856 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:26,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:26,858 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:26,858 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:26,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:26,864 INFO L180 QuantifierPusher]: treesize reduction 30, result has 60.0 percent of original size [2021-11-13 02:38:26,866 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-13 02:38:26,867 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-13 02:38:27,348 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 02:38:27,348 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 02:38:27,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 30 [2021-11-13 02:38:27,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132268404] [2021-11-13 02:38:27,348 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 02:38:27,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-13 02:38:27,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:38:27,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-13 02:38:27,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=292, Invalid=830, Unknown=0, NotChecked=0, Total=1122 [2021-11-13 02:38:27,350 INFO L87 Difference]: Start difference. First operand 161 states and 174 transitions. Second operand has 31 states, 31 states have (on average 2.774193548387097) internal successors, (86), 30 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:43,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:38:43,963 INFO L93 Difference]: Finished difference Result 356 states and 392 transitions. [2021-11-13 02:38:43,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-13 02:38:43,963 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.774193548387097) internal successors, (86), 30 states have internal predecessors, (86), 0 states have call successors, (0), 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 160 [2021-11-13 02:38:43,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:38:43,966 INFO L225 Difference]: With dead ends: 356 [2021-11-13 02:38:43,967 INFO L226 Difference]: Without dead ends: 353 [2021-11-13 02:38:43,968 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 506 GetRequests, 460 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 17.2s TimeCoverageRelationStatistics Valid=695, Invalid=1467, Unknown=0, NotChecked=0, Total=2162 [2021-11-13 02:38:43,969 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 56 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 316.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.51ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 368.29ms IncrementalHoareTripleChecker+Time [2021-11-13 02:38:43,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 240 Invalid, 470 Unknown, 0 Unchecked, 3.51ms Time], IncrementalHoareTripleChecker [23 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 368.29ms Time] [2021-11-13 02:38:43,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2021-11-13 02:38:44,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 353. [2021-11-13 02:38:44,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 352 states have (on average 1.0852272727272727) internal successors, (382), 352 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:44,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 382 transitions. [2021-11-13 02:38:44,023 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 382 transitions. Word has length 160 [2021-11-13 02:38:44,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:38:44,024 INFO L470 AbstractCegarLoop]: Abstraction has 353 states and 382 transitions. [2021-11-13 02:38:44,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.774193548387097) internal successors, (86), 30 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:44,025 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 382 transitions. [2021-11-13 02:38:44,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2021-11-13 02:38:44,033 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:38:44,033 INFO L514 BasicCegarLoop]: trace histogram [290, 29, 29, 1, 1, 1, 1] [2021-11-13 02:38:44,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c9eaf76-3c41-4b57-9161-72976bb8a64c/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-13 02:38:44,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable252,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c9eaf76-3c41-4b57-9161-72976bb8a64c/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:38:44,247 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:38:44,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:38:44,247 INFO L85 PathProgramCache]: Analyzing trace with hash -846221931, now seen corresponding path program 7 times [2021-11-13 02:38:44,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:38:44,248 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273579495] [2021-11-13 02:38:44,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:38:44,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:38:44,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:38:45,585 INFO L134 CoverageAnalysis]: Checked inductivity of 51156 backedges. 0 proven. 49561 refuted. 0 times theorem prover too weak. 1595 trivial. 0 not checked. [2021-11-13 02:38:45,585 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:38:45,585 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273579495] [2021-11-13 02:38:45,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273579495] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 02:38:45,586 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605977580] [2021-11-13 02:38:45,586 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-13 02:38:45,586 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:38:45,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c9eaf76-3c41-4b57-9161-72976bb8a64c/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:38:45,587 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c9eaf76-3c41-4b57-9161-72976bb8a64c/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 02:38:45,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c9eaf76-3c41-4b57-9161-72976bb8a64c/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-13 02:38:46,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:38:46,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 1087 conjuncts, 61 conjunts are in the unsatisfiable core [2021-11-13 02:38:46,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:38:48,246 INFO L134 CoverageAnalysis]: Checked inductivity of 51156 backedges. 0 proven. 49561 refuted. 0 times theorem prover too weak. 1595 trivial. 0 not checked. [2021-11-13 02:38:48,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:38:50,989 INFO L134 CoverageAnalysis]: Checked inductivity of 51156 backedges. 0 proven. 49561 refuted. 0 times theorem prover too weak. 1595 trivial. 0 not checked. [2021-11-13 02:38:50,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605977580] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:38:50,990 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1399939431] [2021-11-13 02:38:50,993 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2021-11-13 02:38:50,993 INFO L166 IcfgInterpreter]: Building call graph [2021-11-13 02:38:50,993 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-13 02:38:50,993 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-13 02:38:50,994 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-13 02:38:50,998 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:50,999 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 02:38:51,000 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:51,000 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-13 02:38:51,001 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 02:38:51,001 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:51,002 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-13 02:38:51,003 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 125 [2021-11-13 02:38:51,006 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_15|], 21=[|v_#valid_16|]} [2021-11-13 02:38:51,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:38:51,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:38:51,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:38:51,016 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-13 02:38:51,017 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:51,017 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-13 02:38:51,018 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:51,019 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-13 02:38:51,019 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-13 02:38:51,019 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:51,023 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:51,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:38:51,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:38:51,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:38:51,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:38:51,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:38:51,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:38:51,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:38:51,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:38:51,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:38:51,043 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-13 02:38:51,044 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:51,046 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-13 02:38:51,047 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:51,047 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-13 02:38:51,048 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-13 02:38:51,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:51,052 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:51,053 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:51,054 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-13 02:38:51,055 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-13 02:38:51,055 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:122, output treesize:97 [2021-11-13 02:38:51,057 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:51,060 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 102 [2021-11-13 02:38:51,062 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:51,064 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-11-13 02:38:51,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:51,077 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:51,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:51,107 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:51,113 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 275 [2021-11-13 02:38:51,118 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:51,151 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:51,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:51,153 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:51,154 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:51,155 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:51,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:51,162 INFO L180 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-11-13 02:38:51,163 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-13 02:38:51,166 INFO L180 QuantifierPusher]: treesize reduction 37, result has 54.9 percent of original size [2021-11-13 02:38:51,169 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-13 02:38:51,171 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:51,175 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:51,181 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:51,190 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:51,194 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 02:38:51,196 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:51,205 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 114 [2021-11-13 02:38:51,207 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 168 [2021-11-13 02:38:51,211 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:51,213 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 177 [2021-11-13 02:38:51,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:51,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:51,234 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:51,235 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:51,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:51,237 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:51,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:51,265 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:51,268 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 98 [2021-11-13 02:38:51,274 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:51,277 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-11-13 02:38:51,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:51,298 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:51,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:51,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:51,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:51,302 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:51,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:51,308 INFO L180 QuantifierPusher]: treesize reduction 30, result has 58.9 percent of original size [2021-11-13 02:38:51,310 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-13 02:38:51,311 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:51,312 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-13 02:38:51,314 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:51,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:51,321 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:51,328 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:51,332 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 118 [2021-11-13 02:38:51,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:51,346 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:51,347 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:51,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:51,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:51,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:51,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:51,363 INFO L180 QuantifierPusher]: treesize reduction 30, result has 60.0 percent of original size [2021-11-13 02:38:51,364 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-13 02:38:51,367 INFO L180 QuantifierPusher]: treesize reduction 31, result has 59.2 percent of original size [2021-11-13 02:38:51,368 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-13 02:38:51,376 INFO L180 QuantifierPusher]: treesize reduction 30, result has 58.9 percent of original size [2021-11-13 02:38:51,377 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-13 02:38:51,379 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:51,380 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-11-13 02:38:51,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:51,391 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:51,399 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:51,405 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:38:51,407 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-11-13 02:38:51,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:51,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:51,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:51,427 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:51,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:51,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:51,431 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:38:51,436 INFO L180 QuantifierPusher]: treesize reduction 30, result has 60.0 percent of original size [2021-11-13 02:38:51,437 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-13 02:38:51,439 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-13 02:38:52,045 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 02:38:52,046 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 02:38:52,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 62 [2021-11-13 02:38:52,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160873513] [2021-11-13 02:38:52,047 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 02:38:52,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2021-11-13 02:38:52,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:38:52,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2021-11-13 02:38:52,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1092, Invalid=3198, Unknown=0, NotChecked=0, Total=4290 [2021-11-13 02:38:52,051 INFO L87 Difference]: Start difference. First operand 353 states and 382 transitions. Second operand has 63 states, 63 states have (on average 2.888888888888889) internal successors, (182), 62 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:18,636 WARN L227 SmtUtils]: Spent 6.52s on a formula simplification. DAG size of input: 122 DAG size of output: 10 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-13 02:39:43,019 WARN L227 SmtUtils]: Spent 6.17s on a formula simplification. DAG size of input: 118 DAG size of output: 10 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-13 02:40:09,762 WARN L227 SmtUtils]: Spent 8.60s on a formula simplification. DAG size of input: 114 DAG size of output: 10 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-13 02:41:02,133 WARN L227 SmtUtils]: Spent 6.95s on a formula simplification. DAG size of input: 106 DAG size of output: 10 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-13 02:46:24,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:46:24,344 INFO L93 Difference]: Finished difference Result 740 states and 816 transitions. [2021-11-13 02:46:24,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-11-13 02:46:24,345 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 2.888888888888889) internal successors, (182), 62 states have internal predecessors, (182), 0 states have call successors, (0), 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 352 [2021-11-13 02:46:24,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:46:24,351 INFO L225 Difference]: With dead ends: 740 [2021-11-13 02:46:24,351 INFO L226 Difference]: Without dead ends: 737 [2021-11-13 02:46:24,355 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1114 GetRequests, 1020 SyntacticMatches, 1 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 681 ImplicationChecksByTransitivity, 453.9s TimeCoverageRelationStatistics Valid=2898, Invalid=6011, Unknown=21, NotChecked=0, Total=8930 [2021-11-13 02:46:24,355 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 182 mSDsluCounter, 976 mSDsCounter, 0 mSdLazyCounter, 1933 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1051.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 1008 SdHoareTripleChecker+Invalid, 1998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.96ms SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1257.77ms IncrementalHoareTripleChecker+Time [2021-11-13 02:46:24,356 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [182 Valid, 1008 Invalid, 1998 Unknown, 0 Unchecked, 10.96ms Time], IncrementalHoareTripleChecker [65 Valid, 1933 Invalid, 0 Unknown, 0 Unchecked, 1257.77ms Time] [2021-11-13 02:46:24,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2021-11-13 02:46:24,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 737. [2021-11-13 02:46:24,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 737 states, 736 states have (on average 1.0842391304347827) internal successors, (798), 736 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:46:24,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 798 transitions. [2021-11-13 02:46:24,432 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 798 transitions. Word has length 352 [2021-11-13 02:46:24,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:46:24,433 INFO L470 AbstractCegarLoop]: Abstraction has 737 states and 798 transitions. [2021-11-13 02:46:24,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 2.888888888888889) internal successors, (182), 62 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:46:24,434 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 798 transitions. [2021-11-13 02:46:24,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 737 [2021-11-13 02:46:24,458 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:46:24,459 INFO L514 BasicCegarLoop]: trace histogram [610, 61, 61, 1, 1, 1, 1] [2021-11-13 02:46:24,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c9eaf76-3c41-4b57-9161-72976bb8a64c/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-13 02:46:24,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable308,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c9eaf76-3c41-4b57-9161-72976bb8a64c/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:46:24,682 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:46:24,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:46:24,683 INFO L85 PathProgramCache]: Analyzing trace with hash 2018788629, now seen corresponding path program 8 times [2021-11-13 02:46:24,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:46:24,683 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602509318] [2021-11-13 02:46:24,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:46:24,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:46:25,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:46:28,392 INFO L134 CoverageAnalysis]: Checked inductivity of 226676 backedges. 0 proven. 223321 refuted. 0 times theorem prover too weak. 3355 trivial. 0 not checked. [2021-11-13 02:46:28,393 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:46:28,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602509318] [2021-11-13 02:46:28,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602509318] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 02:46:28,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218930348] [2021-11-13 02:46:28,394 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 02:46:28,394 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:46:28,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c9eaf76-3c41-4b57-9161-72976bb8a64c/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:46:28,401 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c9eaf76-3c41-4b57-9161-72976bb8a64c/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 02:46:28,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c9eaf76-3c41-4b57-9161-72976bb8a64c/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-13 02:50:11,206 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 362 check-sat command(s) [2021-11-13 02:50:11,206 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 02:50:11,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 2209 conjuncts, 128 conjunts are in the unsatisfiable core [2021-11-13 02:50:11,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:50:14,569 INFO L134 CoverageAnalysis]: Checked inductivity of 226676 backedges. 0 proven. 223321 refuted. 0 times theorem prover too weak. 3355 trivial. 0 not checked. [2021-11-13 02:50:14,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:50:28,575 INFO L134 CoverageAnalysis]: Checked inductivity of 226676 backedges. 0 proven. 223321 refuted. 0 times theorem prover too weak. 3355 trivial. 0 not checked. [2021-11-13 02:50:28,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [218930348] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:50:28,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1177356851] [2021-11-13 02:50:28,578 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2021-11-13 02:50:28,578 INFO L166 IcfgInterpreter]: Building call graph [2021-11-13 02:50:28,578 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-13 02:50:28,579 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-13 02:50:28,579 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-13 02:50:28,583 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:50:28,583 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 02:50:28,585 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:50:28,585 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-13 02:50:28,586 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 02:50:28,586 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:50:28,587 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-13 02:50:28,591 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 125 [2021-11-13 02:50:28,594 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_16|], 21=[|v_#valid_17|]} [2021-11-13 02:50:28,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:50:28,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:50:28,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:50:28,604 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-13 02:50:28,604 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:50:28,605 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-13 02:50:28,606 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:50:28,606 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-13 02:50:28,606 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-13 02:50:28,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:50:28,611 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:50:28,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:50:28,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:50:28,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:50:28,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:50:28,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:50:28,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:50:28,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:50:28,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:50:28,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:50:28,629 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-13 02:50:28,630 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:50:28,632 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-13 02:50:28,633 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:50:28,633 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-13 02:50:28,633 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-13 02:50:28,634 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:50:28,636 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:50:28,638 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:50:28,639 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-13 02:50:28,639 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-13 02:50:28,640 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:122, output treesize:97 [2021-11-13 02:50:28,641 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:50:28,643 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 102 [2021-11-13 02:50:28,645 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:50:28,647 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-11-13 02:50:28,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:50:28,658 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:50:28,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:50:28,684 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:50:28,689 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 275 [2021-11-13 02:50:28,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:50:28,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:50:28,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:50:28,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:50:28,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:50:28,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:50:28,726 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:50:28,730 INFO L180 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-11-13 02:50:28,731 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-13 02:50:28,734 INFO L180 QuantifierPusher]: treesize reduction 37, result has 54.9 percent of original size [2021-11-13 02:50:28,736 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-13 02:50:28,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:50:28,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:50:28,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:50:28,756 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:50:28,760 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 02:50:28,761 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:50:28,765 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 114 [2021-11-13 02:50:28,767 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 168 [2021-11-13 02:50:28,770 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:50:28,772 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 168 [2021-11-13 02:50:28,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:50:28,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:50:28,789 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:50:28,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:50:28,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:50:28,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:50:28,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:50:28,802 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:50:28,805 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 102 [2021-11-13 02:50:28,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:50:28,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:50:28,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:50:28,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:50:28,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:50:28,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:50:28,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:50:28,830 INFO L180 QuantifierPusher]: treesize reduction 30, result has 61.5 percent of original size [2021-11-13 02:50:28,831 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-11-13 02:50:28,834 INFO L180 QuantifierPusher]: treesize reduction 31, result has 60.8 percent of original size [2021-11-13 02:50:28,836 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-13 02:50:28,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:50:28,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:50:28,881 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:50:28,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:50:28,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:50:28,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:50:28,889 INFO L180 QuantifierPusher]: treesize reduction 30, result has 58.9 percent of original size [2021-11-13 02:50:28,891 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-13 02:50:28,893 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:50:28,894 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-11-13 02:50:28,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:50:28,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:50:28,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:50:28,914 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:50:28,917 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-11-13 02:50:28,920 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:50:28,931 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:50:28,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:50:28,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:50:28,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:50:28,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:50:28,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:50:28,941 INFO L180 QuantifierPusher]: treesize reduction 30, result has 60.0 percent of original size [2021-11-13 02:50:28,942 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-13 02:50:28,945 INFO L180 QuantifierPusher]: treesize reduction 31, result has 59.2 percent of original size [2021-11-13 02:50:28,947 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-13 02:50:28,955 INFO L180 QuantifierPusher]: treesize reduction 30, result has 58.9 percent of original size [2021-11-13 02:50:28,957 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-13 02:50:28,958 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:50:28,960 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-11-13 02:50:28,961 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:50:28,964 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:50:28,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:50:28,975 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:50:28,978 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-11-13 02:50:28,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:50:28,991 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:50:28,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:50:28,993 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:50:28,994 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:50:28,995 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:50:28,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:50:29,001 INFO L180 QuantifierPusher]: treesize reduction 30, result has 60.0 percent of original size [2021-11-13 02:50:29,002 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-13 02:50:29,003 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-13 02:50:29,914 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 02:50:29,914 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 02:50:29,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63, 64] total 127 [2021-11-13 02:50:29,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756942346] [2021-11-13 02:50:29,916 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 02:50:29,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 128 states [2021-11-13 02:50:29,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:50:29,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2021-11-13 02:50:29,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4261, Invalid=12769, Unknown=0, NotChecked=0, Total=17030 [2021-11-13 02:50:29,928 INFO L87 Difference]: Start difference. First operand 737 states and 798 transitions. Second operand has 128 states, 128 states have (on average 2.9296875) internal successors, (375), 127 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:50:35,801 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (+ |c_ULTIMATE.start_main_~x~0#1| 1))) (let ((.cse0 (= (mod |c_ULTIMATE.start_main_~x~0#1| 2) 0)) (.cse1 (= (mod .cse2 2) 0))) (and (or .cse0 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 12) 4294967296) 268435455)) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 26) 4294967296) 268435455) .cse0) (or .cse0 (< (mod (+ 46 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455)) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 28) 4294967296) 268435455) .cse0) (or .cse0 (< (mod (+ 16 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455)) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 10) 4294967296) 268435455) .cse0) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 18) 4294967296) 268435455) .cse0) (or (< (mod (+ 32 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse0) (or (< (mod (+ 47 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 58) 4294967296) 268435455) .cse0) (or .cse0 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 60) 4294967296) 268435455)) (or .cse0 (< (mod (+ 56 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455)) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 33) 4294967296) 268435455) .cse1) (or (< (mod (+ 31 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ 5 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 25) 4294967296) 268435455) .cse1) (or (< (mod (+ 3 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ 29 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 27) 4294967296) 268435455) .cse1) (or .cse0 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 20) 4294967296) 268435455)) (or (< (mod (+ 35 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 38) 4294967296) 268435455) .cse0) (or (< (mod (+ 44 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse0) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 39) 4294967296) 268435455) .cse1) (or .cse0 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 4) 4294967296) 268435455)) (or (< (mod (+ 40 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse0) (or (< (mod (+ 57 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ 51 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or .cse0 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 8) 4294967296) 268435455)) (or .cse0 (< (mod (+ 14 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455)) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 37) 4294967296) 268435455) .cse1) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 24) 4294967296) 268435455) .cse0) (or .cse1 (< (mod (+ 19 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455)) (or (< (mod (+ 42 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse0) (or .cse0 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 50) 4294967296) 268435455)) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 55) 4294967296) 268435455) .cse1) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 11) 4294967296) 268435455) .cse1) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 48) 4294967296) 268435455) .cse0) (or (< (mod (+ 9 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ 2 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse0) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 45) 4294967296) 268435455) .cse1) (or (< (mod (+ 23 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ 53 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 15) 4294967296) 268435455) .cse1) (or (< (mod (+ 30 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse0) (or (< (mod .cse2 4294967296) 268435455) .cse1) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 13) 4294967296) 268435455) .cse1) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 54) 4294967296) 268435455) .cse0) (or .cse0 (< (mod (+ 6 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455)) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 61) 4294967296) 268435455) .cse1) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 17) 4294967296) 268435455) .cse1) (or (< (mod (+ 22 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse0) (or (< (mod (+ 7 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod |c_ULTIMATE.start_main_~x~0#1| 4294967296) 268435455) .cse0) (or .cse0 (< (mod (+ 52 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455)) (or .cse0 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 34) 4294967296) 268435455)) (or (< (mod (+ 59 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ 41 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ 21 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 36) 4294967296) 268435455) .cse0) (or .cse1 (< (mod (+ 49 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455)) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 43) 4294967296) 268435455) .cse1)))) is different from false [2021-11-13 02:50:37,817 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (+ |c_ULTIMATE.start_main_~x~0#1| 1))) (let ((.cse0 (= (mod |c_ULTIMATE.start_main_~x~0#1| 2) 0)) (.cse1 (= (mod .cse2 2) 0))) (and (or .cse0 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 12) 4294967296) 268435455)) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 26) 4294967296) 268435455) .cse0) (or .cse0 (< (mod (+ 46 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455)) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 28) 4294967296) 268435455) .cse0) (or .cse0 (< (mod (+ 16 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455)) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 10) 4294967296) 268435455) .cse0) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 18) 4294967296) 268435455) .cse0) (or (< (mod (+ 32 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse0) (or (< (mod (+ 47 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 58) 4294967296) 268435455) .cse0) (or .cse0 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 60) 4294967296) 268435455)) (or .cse0 (< (mod (+ 56 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455)) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 33) 4294967296) 268435455) .cse1) (or (< (mod (+ 31 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ 5 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 25) 4294967296) 268435455) .cse1) (or (< (mod (+ 3 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ 29 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 27) 4294967296) 268435455) .cse1) (or .cse0 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 20) 4294967296) 268435455)) (or (< (mod (+ 35 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 38) 4294967296) 268435455) .cse0) (or (< (mod (+ 44 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse0) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 39) 4294967296) 268435455) .cse1) (or .cse0 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 4) 4294967296) 268435455)) (or (< (mod (+ 40 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse0) (or (< (mod (+ 57 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ 51 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or .cse0 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 8) 4294967296) 268435455)) (or .cse0 (< (mod (+ 14 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455)) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 37) 4294967296) 268435455) .cse1) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 24) 4294967296) 268435455) .cse0) (or .cse1 (< (mod (+ 19 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455)) (or (< (mod (+ 42 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse0) (or .cse0 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 50) 4294967296) 268435455)) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 55) 4294967296) 268435455) .cse1) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 11) 4294967296) 268435455) .cse1) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 48) 4294967296) 268435455) .cse0) (or (< (mod (+ 9 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ 2 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse0) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 45) 4294967296) 268435455) .cse1) (or (< (mod (+ 23 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ 53 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 15) 4294967296) 268435455) .cse1) (or (< (mod (+ 30 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse0) (or (< (mod .cse2 4294967296) 268435455) .cse1) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 13) 4294967296) 268435455) .cse1) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 54) 4294967296) 268435455) .cse0) (or .cse0 (< (mod (+ 6 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455)) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 61) 4294967296) 268435455) .cse1) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 17) 4294967296) 268435455) .cse1) (or (< (mod (+ 22 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse0) (or (< (mod (+ 7 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or .cse0 (< (mod (+ 52 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455)) (or .cse0 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 34) 4294967296) 268435455)) (or (< (mod (+ 59 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ 41 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ 21 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 36) 4294967296) 268435455) .cse0) (or .cse1 (< (mod (+ 49 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455)) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 43) 4294967296) 268435455) .cse1)))) is different from false [2021-11-13 02:50:39,856 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (+ |c_ULTIMATE.start_main_~x~0#1| 1))) (let ((.cse0 (= (mod |c_ULTIMATE.start_main_~x~0#1| 2) 0)) (.cse1 (= (mod .cse2 2) 0))) (and (or .cse0 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 12) 4294967296) 268435455)) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 26) 4294967296) 268435455) .cse0) (or .cse0 (< (mod (+ 46 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455)) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 28) 4294967296) 268435455) .cse0) (or .cse0 (< (mod (+ 16 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455)) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 10) 4294967296) 268435455) .cse0) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 18) 4294967296) 268435455) .cse0) (or (< (mod (+ 32 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse0) (or (< (mod (+ 47 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 58) 4294967296) 268435455) .cse0) (or .cse0 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 60) 4294967296) 268435455)) (or .cse0 (< (mod (+ 56 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455)) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 33) 4294967296) 268435455) .cse1) (or (< (mod (+ 31 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ 5 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 25) 4294967296) 268435455) .cse1) (or (< (mod (+ 3 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ 29 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 27) 4294967296) 268435455) .cse1) (or .cse0 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 20) 4294967296) 268435455)) (or (< (mod (+ 35 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 38) 4294967296) 268435455) .cse0) (or (< (mod (+ 44 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse0) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 39) 4294967296) 268435455) .cse1) (or .cse0 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 4) 4294967296) 268435455)) (or (< (mod (+ 40 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse0) (or (< (mod (+ 57 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ 51 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or .cse0 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 8) 4294967296) 268435455)) (or .cse0 (< (mod (+ 14 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455)) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 37) 4294967296) 268435455) .cse1) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 24) 4294967296) 268435455) .cse0) (or .cse1 (< (mod (+ 19 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455)) (or (< (mod (+ 42 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse0) (or .cse0 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 50) 4294967296) 268435455)) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 55) 4294967296) 268435455) .cse1) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 11) 4294967296) 268435455) .cse1) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 48) 4294967296) 268435455) .cse0) (or (< (mod (+ 9 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ 2 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse0) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 45) 4294967296) 268435455) .cse1) (or (< (mod (+ 23 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ 53 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 15) 4294967296) 268435455) .cse1) (or (< (mod (+ 30 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse0) (or (< (mod .cse2 4294967296) 268435455) .cse1) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 13) 4294967296) 268435455) .cse1) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 54) 4294967296) 268435455) .cse0) (or .cse0 (< (mod (+ 6 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455)) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 17) 4294967296) 268435455) .cse1) (or (< (mod (+ 22 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse0) (or (< (mod (+ 7 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod |c_ULTIMATE.start_main_~x~0#1| 4294967296) 268435455) .cse0) (or .cse0 (< (mod (+ 52 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455)) (or .cse0 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 34) 4294967296) 268435455)) (or (< (mod (+ 59 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ 41 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ 21 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 36) 4294967296) 268435455) .cse0) (or .cse1 (< (mod (+ 49 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455)) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 43) 4294967296) 268435455) .cse1)))) is different from false [2021-11-13 02:50:41,876 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (+ |c_ULTIMATE.start_main_~x~0#1| 1))) (let ((.cse0 (= (mod |c_ULTIMATE.start_main_~x~0#1| 2) 0)) (.cse1 (= (mod .cse2 2) 0))) (and (or .cse0 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 12) 4294967296) 268435455)) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 26) 4294967296) 268435455) .cse0) (or .cse0 (< (mod (+ 46 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455)) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 28) 4294967296) 268435455) .cse0) (or .cse0 (< (mod (+ 16 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455)) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 10) 4294967296) 268435455) .cse0) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 18) 4294967296) 268435455) .cse0) (or (< (mod (+ 32 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse0) (or (< (mod (+ 47 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 58) 4294967296) 268435455) .cse0) (or .cse0 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 60) 4294967296) 268435455)) (or .cse0 (< (mod (+ 56 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455)) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 33) 4294967296) 268435455) .cse1) (or (< (mod (+ 31 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ 5 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 25) 4294967296) 268435455) .cse1) (or (< (mod (+ 3 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ 29 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 27) 4294967296) 268435455) .cse1) (or .cse0 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 20) 4294967296) 268435455)) (or (< (mod (+ 35 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 38) 4294967296) 268435455) .cse0) (or (< (mod (+ 44 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse0) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 39) 4294967296) 268435455) .cse1) (or .cse0 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 4) 4294967296) 268435455)) (or (< (mod (+ 40 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse0) (or (< (mod (+ 57 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ 51 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or .cse0 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 8) 4294967296) 268435455)) (or .cse0 (< (mod (+ 14 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455)) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 37) 4294967296) 268435455) .cse1) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 24) 4294967296) 268435455) .cse0) (or .cse1 (< (mod (+ 19 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455)) (or (< (mod (+ 42 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse0) (or .cse0 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 50) 4294967296) 268435455)) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 55) 4294967296) 268435455) .cse1) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 11) 4294967296) 268435455) .cse1) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 48) 4294967296) 268435455) .cse0) (or (< (mod (+ 9 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ 2 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse0) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 45) 4294967296) 268435455) .cse1) (or (< (mod (+ 23 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ 53 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 15) 4294967296) 268435455) .cse1) (or (< (mod (+ 30 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse0) (or (< (mod .cse2 4294967296) 268435455) .cse1) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 13) 4294967296) 268435455) .cse1) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 54) 4294967296) 268435455) .cse0) (or .cse0 (< (mod (+ 6 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455)) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 17) 4294967296) 268435455) .cse1) (or (< (mod (+ 22 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse0) (or (< (mod (+ 7 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or .cse0 (< (mod (+ 52 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455)) (or .cse0 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 34) 4294967296) 268435455)) (or (< (mod (+ 59 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ 41 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ 21 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 36) 4294967296) 268435455) .cse0) (or .cse1 (< (mod (+ 49 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455)) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 43) 4294967296) 268435455) .cse1)))) is different from false [2021-11-13 02:50:43,907 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (+ |c_ULTIMATE.start_main_~x~0#1| 1))) (let ((.cse0 (= (mod |c_ULTIMATE.start_main_~x~0#1| 2) 0)) (.cse1 (= (mod .cse2 2) 0))) (and (or .cse0 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 12) 4294967296) 268435455)) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 26) 4294967296) 268435455) .cse0) (or .cse0 (< (mod (+ 46 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455)) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 28) 4294967296) 268435455) .cse0) (or .cse0 (< (mod (+ 16 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455)) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 10) 4294967296) 268435455) .cse0) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 18) 4294967296) 268435455) .cse0) (or (< (mod (+ 32 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse0) (or (< (mod (+ 47 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 58) 4294967296) 268435455) .cse0) (or .cse0 (< (mod (+ 56 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455)) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 33) 4294967296) 268435455) .cse1) (or (< (mod (+ 31 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ 5 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 25) 4294967296) 268435455) .cse1) (or (< (mod (+ 3 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ 29 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 27) 4294967296) 268435455) .cse1) (or .cse0 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 20) 4294967296) 268435455)) (or (< (mod (+ 35 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 38) 4294967296) 268435455) .cse0) (or (< (mod (+ 44 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse0) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 39) 4294967296) 268435455) .cse1) (or .cse0 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 4) 4294967296) 268435455)) (or (< (mod (+ 40 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse0) (or (< (mod (+ 57 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ 51 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or .cse0 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 8) 4294967296) 268435455)) (or .cse0 (< (mod (+ 14 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455)) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 37) 4294967296) 268435455) .cse1) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 24) 4294967296) 268435455) .cse0) (or .cse1 (< (mod (+ 19 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455)) (or (< (mod (+ 42 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse0) (or .cse0 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 50) 4294967296) 268435455)) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 55) 4294967296) 268435455) .cse1) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 11) 4294967296) 268435455) .cse1) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 48) 4294967296) 268435455) .cse0) (or (< (mod (+ 9 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ 2 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse0) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 45) 4294967296) 268435455) .cse1) (or (< (mod (+ 23 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ 53 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 15) 4294967296) 268435455) .cse1) (or (< (mod (+ 30 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse0) (or (< (mod .cse2 4294967296) 268435455) .cse1) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 13) 4294967296) 268435455) .cse1) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 54) 4294967296) 268435455) .cse0) (or .cse0 (< (mod (+ 6 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455)) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 17) 4294967296) 268435455) .cse1) (or (< (mod (+ 22 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse0) (or (< (mod (+ 7 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod |c_ULTIMATE.start_main_~x~0#1| 4294967296) 268435455) .cse0) (or .cse0 (< (mod (+ 52 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455)) (or .cse0 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 34) 4294967296) 268435455)) (or (< (mod (+ 59 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ 41 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ 21 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 36) 4294967296) 268435455) .cse0) (or .cse1 (< (mod (+ 49 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455)) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 43) 4294967296) 268435455) .cse1)))) is different from false [2021-11-13 02:50:45,928 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (+ |c_ULTIMATE.start_main_~x~0#1| 1))) (let ((.cse0 (= (mod |c_ULTIMATE.start_main_~x~0#1| 2) 0)) (.cse1 (= (mod .cse2 2) 0))) (and (or .cse0 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 12) 4294967296) 268435455)) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 26) 4294967296) 268435455) .cse0) (or .cse0 (< (mod (+ 46 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455)) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 28) 4294967296) 268435455) .cse0) (or .cse0 (< (mod (+ 16 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455)) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 10) 4294967296) 268435455) .cse0) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 18) 4294967296) 268435455) .cse0) (or (< (mod (+ 32 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse0) (or (< (mod (+ 47 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 58) 4294967296) 268435455) .cse0) (or .cse0 (< (mod (+ 56 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455)) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 33) 4294967296) 268435455) .cse1) (or (< (mod (+ 31 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ 5 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 25) 4294967296) 268435455) .cse1) (or (< (mod (+ 3 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ 29 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 27) 4294967296) 268435455) .cse1) (or .cse0 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 20) 4294967296) 268435455)) (or (< (mod (+ 35 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 38) 4294967296) 268435455) .cse0) (or (< (mod (+ 44 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse0) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 39) 4294967296) 268435455) .cse1) (or .cse0 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 4) 4294967296) 268435455)) (or (< (mod (+ 40 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse0) (or (< (mod (+ 57 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ 51 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or .cse0 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 8) 4294967296) 268435455)) (or .cse0 (< (mod (+ 14 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455)) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 37) 4294967296) 268435455) .cse1) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 24) 4294967296) 268435455) .cse0) (or .cse1 (< (mod (+ 19 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455)) (or (< (mod (+ 42 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse0) (or .cse0 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 50) 4294967296) 268435455)) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 55) 4294967296) 268435455) .cse1) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 11) 4294967296) 268435455) .cse1) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 48) 4294967296) 268435455) .cse0) (or (< (mod (+ 9 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ 2 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse0) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 45) 4294967296) 268435455) .cse1) (or (< (mod (+ 23 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ 53 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 15) 4294967296) 268435455) .cse1) (or (< (mod (+ 30 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse0) (or (< (mod .cse2 4294967296) 268435455) .cse1) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 13) 4294967296) 268435455) .cse1) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 54) 4294967296) 268435455) .cse0) (or .cse0 (< (mod (+ 6 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455)) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 17) 4294967296) 268435455) .cse1) (or (< (mod (+ 22 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse0) (or (< (mod (+ 7 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or .cse0 (< (mod (+ 52 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455)) (or .cse0 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 34) 4294967296) 268435455)) (or (< (mod (+ 59 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ 41 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ 21 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 36) 4294967296) 268435455) .cse0) (or .cse1 (< (mod (+ 49 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455)) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 43) 4294967296) 268435455) .cse1)))) is different from false [2021-11-13 02:50:47,950 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (+ |c_ULTIMATE.start_main_~x~0#1| 1))) (let ((.cse0 (= (mod |c_ULTIMATE.start_main_~x~0#1| 2) 0)) (.cse1 (= (mod .cse2 2) 0))) (and (or .cse0 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 12) 4294967296) 268435455)) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 26) 4294967296) 268435455) .cse0) (or .cse0 (< (mod (+ 46 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455)) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 28) 4294967296) 268435455) .cse0) (or .cse0 (< (mod (+ 16 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455)) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 10) 4294967296) 268435455) .cse0) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 18) 4294967296) 268435455) .cse0) (or (< (mod (+ 32 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse0) (or (< (mod (+ 47 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 58) 4294967296) 268435455) .cse0) (or .cse0 (< (mod (+ 56 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455)) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 33) 4294967296) 268435455) .cse1) (or (< (mod (+ 31 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ 5 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 25) 4294967296) 268435455) .cse1) (or (< (mod (+ 3 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ 29 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 27) 4294967296) 268435455) .cse1) (or .cse0 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 20) 4294967296) 268435455)) (or (< (mod (+ 35 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 38) 4294967296) 268435455) .cse0) (or (< (mod (+ 44 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse0) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 39) 4294967296) 268435455) .cse1) (or .cse0 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 4) 4294967296) 268435455)) (or (< (mod (+ 40 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse0) (or (< (mod (+ 57 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ 51 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or .cse0 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 8) 4294967296) 268435455)) (or .cse0 (< (mod (+ 14 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455)) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 37) 4294967296) 268435455) .cse1) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 24) 4294967296) 268435455) .cse0) (or .cse1 (< (mod (+ 19 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455)) (or (< (mod (+ 42 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse0) (or .cse0 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 50) 4294967296) 268435455)) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 55) 4294967296) 268435455) .cse1) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 11) 4294967296) 268435455) .cse1) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 48) 4294967296) 268435455) .cse0) (or (< (mod (+ 9 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ 2 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse0) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 45) 4294967296) 268435455) .cse1) (or (< (mod (+ 23 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ 53 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 15) 4294967296) 268435455) .cse1) (or (< (mod (+ 30 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse0) (or (< (mod .cse2 4294967296) 268435455) .cse1) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 13) 4294967296) 268435455) .cse1) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 54) 4294967296) 268435455) .cse0) (or .cse0 (< (mod (+ 6 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455)) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 17) 4294967296) 268435455) .cse1) (or (< (mod (+ 22 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse0) (or (< (mod (+ 7 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod |c_ULTIMATE.start_main_~x~0#1| 4294967296) 268435455) .cse0) (or .cse0 (< (mod (+ 52 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455)) (or .cse0 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 34) 4294967296) 268435455)) (or (< (mod (+ 41 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ 21 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 36) 4294967296) 268435455) .cse0) (or .cse1 (< (mod (+ 49 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455)) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 43) 4294967296) 268435455) .cse1)))) is different from false [2021-11-13 02:50:49,978 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (+ |c_ULTIMATE.start_main_~x~0#1| 1))) (let ((.cse0 (= (mod |c_ULTIMATE.start_main_~x~0#1| 2) 0)) (.cse1 (= (mod .cse2 2) 0))) (and (or .cse0 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 12) 4294967296) 268435455)) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 26) 4294967296) 268435455) .cse0) (or .cse0 (< (mod (+ 46 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455)) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 28) 4294967296) 268435455) .cse0) (or .cse0 (< (mod (+ 16 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455)) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 10) 4294967296) 268435455) .cse0) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 18) 4294967296) 268435455) .cse0) (or (< (mod (+ 32 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse0) (or (< (mod (+ 47 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 58) 4294967296) 268435455) .cse0) (or .cse0 (< (mod (+ 56 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455)) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 33) 4294967296) 268435455) .cse1) (or (< (mod (+ 31 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ 5 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 25) 4294967296) 268435455) .cse1) (or (< (mod (+ 3 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ 29 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 27) 4294967296) 268435455) .cse1) (or .cse0 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 20) 4294967296) 268435455)) (or (< (mod (+ 35 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 38) 4294967296) 268435455) .cse0) (or (< (mod (+ 44 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse0) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 39) 4294967296) 268435455) .cse1) (or .cse0 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 4) 4294967296) 268435455)) (or (< (mod (+ 40 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse0) (or (< (mod (+ 57 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ 51 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or .cse0 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 8) 4294967296) 268435455)) (or .cse0 (< (mod (+ 14 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455)) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 37) 4294967296) 268435455) .cse1) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 24) 4294967296) 268435455) .cse0) (or .cse1 (< (mod (+ 19 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455)) (or (< (mod (+ 42 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse0) (or .cse0 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 50) 4294967296) 268435455)) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 55) 4294967296) 268435455) .cse1) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 11) 4294967296) 268435455) .cse1) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 48) 4294967296) 268435455) .cse0) (or (< (mod (+ 9 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ 2 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse0) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 45) 4294967296) 268435455) .cse1) (or (< (mod (+ 23 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ 53 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 15) 4294967296) 268435455) .cse1) (or (< (mod (+ 30 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse0) (or (< (mod .cse2 4294967296) 268435455) .cse1) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 13) 4294967296) 268435455) .cse1) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 54) 4294967296) 268435455) .cse0) (or .cse0 (< (mod (+ 6 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455)) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 17) 4294967296) 268435455) .cse1) (or (< (mod (+ 22 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse0) (or (< (mod (+ 7 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or .cse0 (< (mod (+ 52 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455)) (or .cse0 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 34) 4294967296) 268435455)) (or (< (mod (+ 41 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ 21 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) .cse1) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 36) 4294967296) 268435455) .cse0) (or .cse1 (< (mod (+ 49 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455)) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 43) 4294967296) 268435455) .cse1)))) is different from false