./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-patterns/array24_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-patterns/array24_pattern.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b41c571dabcbc4670dde65107f8da5b879f13435b678b4e9a9cdcc7ef0066cf6 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:43:43,531 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:43:43,535 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:43:43,598 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:43:43,598 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:43:43,604 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:43:43,606 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:43:43,610 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:43:43,613 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:43:43,618 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:43:43,619 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:43:43,621 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:43:43,621 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:43:43,624 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:43:43,626 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:43:43,630 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:43:43,632 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:43:43,633 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:43:43,635 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:43:43,643 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:43:43,644 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:43:43,646 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:43:43,649 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:43:43,650 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:43:43,654 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:43:43,654 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:43:43,655 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:43:43,657 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:43:43,657 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:43:43,659 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:43:43,660 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:43:43,660 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:43:43,663 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:43:43,664 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:43:43,665 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:43:43,666 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:43:43,666 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:43:43,667 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:43:43,667 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:43:43,668 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:43:43,669 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:43:43,669 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 19:43:43,715 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:43:43,715 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:43:43,716 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:43:43,716 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:43:43,717 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:43:43,717 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:43:43,717 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:43:43,718 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:43:43,718 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:43:43,718 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 19:43:43,719 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:43:43,719 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:43:43,719 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 19:43:43,720 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 19:43:43,720 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:43:43,720 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 19:43:43,720 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 19:43:43,720 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 19:43:43,721 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:43:43,721 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 19:43:43,722 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:43:43,722 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 19:43:43,722 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:43:43,722 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:43:43,722 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:43:43,723 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:43:43,723 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 19:43:43,723 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:43:43,723 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:43:43,723 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:43:43,724 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:43:43,724 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:43:43,724 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:43:43,724 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:43:43,725 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:43:43,725 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:43:43,725 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 19:43:43,725 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 19:43:43,725 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:43:43,726 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:43:43,726 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:43:43,726 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_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b41c571dabcbc4670dde65107f8da5b879f13435b678b4e9a9cdcc7ef0066cf6 [2021-11-25 19:43:44,047 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:43:44,082 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:43:44,084 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:43:44,085 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:43:44,086 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:43:44,088 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/array-patterns/array24_pattern.c [2021-11-25 19:43:44,158 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/data/7df19d330/85f1c97ce33d4283aa6bbdab1fc53b15/FLAG102b3fa35 [2021-11-25 19:43:44,557 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:43:44,558 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/sv-benchmarks/c/array-patterns/array24_pattern.c [2021-11-25 19:43:44,567 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/data/7df19d330/85f1c97ce33d4283aa6bbdab1fc53b15/FLAG102b3fa35 [2021-11-25 19:43:44,950 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/data/7df19d330/85f1c97ce33d4283aa6bbdab1fc53b15 [2021-11-25 19:43:44,952 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:43:44,953 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:43:44,956 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:43:44,957 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:43:44,960 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:43:44,960 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:43:44" (1/1) ... [2021-11-25 19:43:44,963 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75b5220 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:43:44, skipping insertion in model container [2021-11-25 19:43:44,964 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:43:44" (1/1) ... [2021-11-25 19:43:44,971 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:43:44,993 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:43:45,179 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/sv-benchmarks/c/array-patterns/array24_pattern.c[1359,1372] [2021-11-25 19:43:45,201 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:43:45,209 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:43:45,221 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/sv-benchmarks/c/array-patterns/array24_pattern.c[1359,1372] [2021-11-25 19:43:45,232 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:43:45,253 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:43:45,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:43:45 WrapperNode [2021-11-25 19:43:45,254 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:43:45,255 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:43:45,255 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:43:45,255 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:43:45,264 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:43:45" (1/1) ... [2021-11-25 19:43:45,280 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:43:45" (1/1) ... [2021-11-25 19:43:45,309 INFO L137 Inliner]: procedures = 17, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 105 [2021-11-25 19:43:45,309 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:43:45,310 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:43:45,310 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:43:45,310 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:43:45,318 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:43:45" (1/1) ... [2021-11-25 19:43:45,319 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:43:45" (1/1) ... [2021-11-25 19:43:45,321 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:43:45" (1/1) ... [2021-11-25 19:43:45,322 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:43:45" (1/1) ... [2021-11-25 19:43:45,327 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:43:45" (1/1) ... [2021-11-25 19:43:45,332 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:43:45" (1/1) ... [2021-11-25 19:43:45,334 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:43:45" (1/1) ... [2021-11-25 19:43:45,336 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:43:45,337 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:43:45,338 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:43:45,338 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:43:45,339 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:43:45" (1/1) ... [2021-11-25 19:43:45,346 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:43:45,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:43:45,371 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:43:45,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:43:45,415 INFO L130 BoogieDeclarations]: Found specification of procedure outerBoundaryPatternCheck [2021-11-25 19:43:45,416 INFO L138 BoogieDeclarations]: Found implementation of procedure outerBoundaryPatternCheck [2021-11-25 19:43:45,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:43:45,416 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-25 19:43:45,417 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-25 19:43:45,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 19:43:45,417 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 19:43:45,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 19:43:45,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:43:45,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:43:45,418 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 19:43:45,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 19:43:45,532 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:43:45,534 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:43:45,766 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:43:45,818 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:43:45,819 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-25 19:43:45,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:43:45 BoogieIcfgContainer [2021-11-25 19:43:45,822 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:43:45,824 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:43:45,824 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:43:45,828 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:43:45,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:43:44" (1/3) ... [2021-11-25 19:43:45,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b632d47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:43:45, skipping insertion in model container [2021-11-25 19:43:45,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:43:45" (2/3) ... [2021-11-25 19:43:45,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b632d47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:43:45, skipping insertion in model container [2021-11-25 19:43:45,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:43:45" (3/3) ... [2021-11-25 19:43:45,840 INFO L111 eAbstractionObserver]: Analyzing ICFG array24_pattern.c [2021-11-25 19:43:45,848 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:43:45,848 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 19:43:45,894 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:43:45,901 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 19:43:45,901 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 19:43:45,917 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 18 states have (on average 1.5) internal successors, (27), 19 states have internal predecessors, (27), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-25 19:43:45,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-25 19:43:45,921 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:43:45,922 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:43:45,922 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:43:45,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:43:45,928 INFO L85 PathProgramCache]: Analyzing trace with hash -445405455, now seen corresponding path program 1 times [2021-11-25 19:43:45,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:43:45,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266703460] [2021-11-25 19:43:45,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:43:45,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:43:46,026 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 19:43:46,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1003981713] [2021-11-25 19:43:46,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:43:46,027 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:43:46,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:43:46,029 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:43:46,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 19:43:46,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:43:46,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-25 19:43:46,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:43:46,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:43:46,196 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:43:46,197 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:43:46,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266703460] [2021-11-25 19:43:46,198 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 19:43:46,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003981713] [2021-11-25 19:43:46,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003981713] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:43:46,199 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:43:46,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 19:43:46,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931731938] [2021-11-25 19:43:46,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:43:46,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-25 19:43:46,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:43:46,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-25 19:43:46,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 19:43:46,245 INFO L87 Difference]: Start difference. First operand has 27 states, 18 states have (on average 1.5) internal successors, (27), 19 states have internal predecessors, (27), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-25 19:43:46,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:43:46,296 INFO L93 Difference]: Finished difference Result 35 states and 47 transitions. [2021-11-25 19:43:46,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 19:43:46,298 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-11-25 19:43:46,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:43:46,306 INFO L225 Difference]: With dead ends: 35 [2021-11-25 19:43:46,306 INFO L226 Difference]: Without dead ends: 25 [2021-11-25 19:43:46,309 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 19:43:46,312 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:43:46,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:43:46,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-11-25 19:43:46,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-11-25 19:43:46,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 17 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-25 19:43:46,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2021-11-25 19:43:46,346 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 11 [2021-11-25 19:43:46,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:43:46,348 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 33 transitions. [2021-11-25 19:43:46,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-25 19:43:46,348 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2021-11-25 19:43:46,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-25 19:43:46,350 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:43:46,350 INFO L514 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:43:46,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 19:43:46,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-11-25 19:43:46,553 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:43:46,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:43:46,554 INFO L85 PathProgramCache]: Analyzing trace with hash -369278382, now seen corresponding path program 1 times [2021-11-25 19:43:46,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:43:46,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643139412] [2021-11-25 19:43:46,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:43:46,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:43:46,569 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 19:43:46,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [446226345] [2021-11-25 19:43:46,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:43:46,581 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:43:46,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:43:46,586 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:43:46,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 19:43:46,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:43:46,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 19:43:46,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:43:46,846 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 19:43:46,847 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:43:46,847 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:43:46,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643139412] [2021-11-25 19:43:46,847 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 19:43:46,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446226345] [2021-11-25 19:43:46,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [446226345] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:43:46,848 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:43:46,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:43:46,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260644233] [2021-11-25 19:43:46,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:43:46,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:43:46,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:43:46,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:43:46,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:43:46,851 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-25 19:43:46,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:43:46,992 INFO L93 Difference]: Finished difference Result 51 states and 67 transitions. [2021-11-25 19:43:46,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:43:46,993 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 24 [2021-11-25 19:43:46,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:43:46,994 INFO L225 Difference]: With dead ends: 51 [2021-11-25 19:43:46,994 INFO L226 Difference]: Without dead ends: 31 [2021-11-25 19:43:46,995 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:43:46,997 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 36 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:43:46,997 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 41 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:43:46,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-11-25 19:43:47,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2021-11-25 19:43:47,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 20 states have (on average 1.3) internal successors, (26), 20 states have internal predecessors, (26), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-25 19:43:47,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2021-11-25 19:43:47,006 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 24 [2021-11-25 19:43:47,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:43:47,006 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2021-11-25 19:43:47,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-25 19:43:47,007 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2021-11-25 19:43:47,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-25 19:43:47,008 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:43:47,008 INFO L514 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:43:47,034 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-25 19:43:47,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:43:47,233 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:43:47,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:43:47,234 INFO L85 PathProgramCache]: Analyzing trace with hash -2038583436, now seen corresponding path program 1 times [2021-11-25 19:43:47,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:43:47,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372018456] [2021-11-25 19:43:47,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:43:47,235 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:43:47,248 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 19:43:47,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1278159476] [2021-11-25 19:43:47,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:43:47,249 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:43:47,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:43:47,250 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:43:47,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 19:43:47,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:43:47,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 19:43:47,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:43:47,408 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-25 19:43:47,409 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:43:47,409 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:43:47,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372018456] [2021-11-25 19:43:47,409 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 19:43:47,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278159476] [2021-11-25 19:43:47,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1278159476] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:43:47,410 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:43:47,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:43:47,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516934561] [2021-11-25 19:43:47,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:43:47,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:43:47,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:43:47,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:43:47,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:43:47,412 INFO L87 Difference]: Start difference. First operand 29 states and 36 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-25 19:43:47,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:43:47,456 INFO L93 Difference]: Finished difference Result 54 states and 70 transitions. [2021-11-25 19:43:47,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 19:43:47,457 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2021-11-25 19:43:47,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:43:47,458 INFO L225 Difference]: With dead ends: 54 [2021-11-25 19:43:47,458 INFO L226 Difference]: Without dead ends: 31 [2021-11-25 19:43:47,458 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:43:47,460 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 16 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:43:47,461 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 47 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:43:47,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-11-25 19:43:47,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-11-25 19:43:47,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 22 states have internal predecessors, (28), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-25 19:43:47,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2021-11-25 19:43:47,468 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 28 [2021-11-25 19:43:47,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:43:47,469 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2021-11-25 19:43:47,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-25 19:43:47,469 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2021-11-25 19:43:47,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-25 19:43:47,470 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:43:47,470 INFO L514 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:43:47,504 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-25 19:43:47,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:43:47,694 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:43:47,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:43:47,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1737391081, now seen corresponding path program 1 times [2021-11-25 19:43:47,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:43:47,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408101980] [2021-11-25 19:43:47,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:43:47,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:43:47,713 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 19:43:47,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1428905411] [2021-11-25 19:43:47,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:43:47,720 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:43:47,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:43:47,721 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:43:47,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-25 19:43:47,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:43:47,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-25 19:43:47,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:43:47,880 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-25 19:43:47,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:43:47,982 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 19:43:47,983 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:43:47,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408101980] [2021-11-25 19:43:47,983 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 19:43:47,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428905411] [2021-11-25 19:43:47,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1428905411] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:43:47,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [246077958] [2021-11-25 19:43:48,008 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2021-11-25 19:43:48,009 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:43:48,015 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:43:48,024 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:43:48,026 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:43:48,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:43:48,239 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-25 19:43:48,241 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 52 treesize of output 68 [2021-11-25 19:43:48,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:43:48,312 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-25 19:43:48,313 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2021-11-25 19:43:48,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:43:48,409 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 47 [2021-11-25 19:43:48,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:43:48,590 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:43:48,640 INFO L354 Elim1Store]: treesize reduction 191, result has 17.3 percent of original size [2021-11-25 19:43:48,640 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 351 treesize of output 354 [2021-11-25 19:43:48,825 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2021-11-25 19:43:49,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:43:49,026 INFO L354 Elim1Store]: treesize reduction 71, result has 9.0 percent of original size [2021-11-25 19:43:49,028 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 192 treesize of output 194 [2021-11-25 19:43:49,090 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2021-11-25 19:43:49,135 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2021-11-25 19:43:49,200 INFO L354 Elim1Store]: treesize reduction 114, result has 21.9 percent of original size [2021-11-25 19:43:49,200 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 103 treesize of output 108 [2021-11-25 19:43:49,254 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2021-11-25 19:43:49,564 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 29 [2021-11-25 19:43:49,997 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2021-11-25 19:43:50,055 INFO L354 Elim1Store]: treesize reduction 114, result has 21.9 percent of original size [2021-11-25 19:43:50,056 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 103 treesize of output 108 [2021-11-25 19:43:50,105 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2021-11-25 19:43:50,118 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 14 for LOIs [2021-11-25 19:43:50,121 INFO L197 IcfgInterpreter]: Interpreting procedure outerBoundaryPatternCheck with input of size 37 for LOIs [2021-11-25 19:43:50,139 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:43:51,676 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '739#(and (<= 0 (+ |ULTIMATE.start_main_~index2~0#1| 32768)) (= |ULTIMATE.start_main_~temp~0#1| 0) (<= ~ARR_SIZE~0 |ULTIMATE.start_main_~row~0#1|) (<= 0 (+ |ULTIMATE.start_main_~index1~0#1| 32768)) (<= |ULTIMATE.start_main_~index2~0#1| 32767) (<= |ULTIMATE.start_main_~index1~0#1| 32767) (<= 0 |ULTIMATE.start_main_~column~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 (+ ~ARR_SIZE~0 32768)) (<= (+ |ULTIMATE.start_main_~num~0#1| 1) 0) (<= 0 |ULTIMATE.start_main_~#array~0#1.base|) (<= 0 (+ |ULTIMATE.start_main_~num~0#1| 1)) (= |ULTIMATE.start_main_~#array~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~row~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= ~ARR_SIZE~0 32767) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (and (<= (+ (* 4 ~ARR_SIZE~0) |ULTIMATE.start_main_~sum~0#1|) (+ 4 (* ~ARR_SIZE~0 ~ARR_SIZE~0))) (<= 0 |ULTIMATE.start_main_~sum~0#1|)) 1 0)) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-25 19:43:51,676 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:43:51,677 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-25 19:43:51,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2021-11-25 19:43:51,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227935203] [2021-11-25 19:43:51,677 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-25 19:43:51,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 19:43:51,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:43:51,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 19:43:51,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=701, Unknown=0, NotChecked=0, Total=812 [2021-11-25 19:43:51,680 INFO L87 Difference]: Start difference. First operand 31 states and 38 transitions. Second operand has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-25 19:43:51,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:43:51,764 INFO L93 Difference]: Finished difference Result 58 states and 74 transitions. [2021-11-25 19:43:51,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:43:51,765 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 30 [2021-11-25 19:43:51,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:43:51,766 INFO L225 Difference]: With dead ends: 58 [2021-11-25 19:43:51,768 INFO L226 Difference]: Without dead ends: 33 [2021-11-25 19:43:51,769 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=115, Invalid=755, Unknown=0, NotChecked=0, Total=870 [2021-11-25 19:43:51,770 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 27 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:43:51,771 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 54 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:43:51,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-11-25 19:43:51,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-11-25 19:43:51,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 24 states have (on average 1.25) internal successors, (30), 24 states have internal predecessors, (30), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-25 19:43:51,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2021-11-25 19:43:51,787 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 30 [2021-11-25 19:43:51,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:43:51,787 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2021-11-25 19:43:51,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-25 19:43:51,788 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2021-11-25 19:43:51,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-25 19:43:51,789 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:43:51,790 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:43:51,829 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-25 19:43:52,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:43:52,008 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:43:52,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:43:52,009 INFO L85 PathProgramCache]: Analyzing trace with hash 737507988, now seen corresponding path program 2 times [2021-11-25 19:43:52,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:43:52,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488711898] [2021-11-25 19:43:52,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:43:52,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:43:52,020 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 19:43:52,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [175941004] [2021-11-25 19:43:52,021 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 19:43:52,021 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:43:52,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:43:52,022 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:43:52,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-25 19:43:52,087 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-25 19:43:52,087 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:43:52,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-25 19:43:52,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:43:52,252 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-25 19:43:52,253 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:43:52,575 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-25 19:43:52,575 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:43:52,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488711898] [2021-11-25 19:43:52,575 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 19:43:52,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175941004] [2021-11-25 19:43:52,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175941004] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:43:52,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [855220703] [2021-11-25 19:43:52,580 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2021-11-25 19:43:52,581 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:43:52,581 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:43:52,582 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:43:52,582 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:43:52,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:43:52,671 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-25 19:43:52,672 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2021-11-25 19:43:52,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:43:52,685 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 52 treesize of output 60 [2021-11-25 19:43:52,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:43:52,732 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 51 [2021-11-25 19:43:52,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:43:52,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:43:52,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:43:52,842 INFO L354 Elim1Store]: treesize reduction 106, result has 6.2 percent of original size [2021-11-25 19:43:52,843 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 352 treesize of output 349 [2021-11-25 19:43:52,905 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2021-11-25 19:43:53,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:43:53,033 INFO L354 Elim1Store]: treesize reduction 71, result has 9.0 percent of original size [2021-11-25 19:43:53,033 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 192 treesize of output 194 [2021-11-25 19:43:53,075 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2021-11-25 19:43:53,107 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2021-11-25 19:43:53,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:43:53,137 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 103 [2021-11-25 19:43:53,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2021-11-25 19:43:53,370 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 29 [2021-11-25 19:43:53,706 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2021-11-25 19:43:53,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:43:53,736 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 103 [2021-11-25 19:43:53,763 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2021-11-25 19:43:53,775 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 14 for LOIs [2021-11-25 19:43:53,778 INFO L197 IcfgInterpreter]: Interpreting procedure outerBoundaryPatternCheck with input of size 37 for LOIs [2021-11-25 19:43:53,791 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:43:55,108 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1102#(and (<= 0 (+ |ULTIMATE.start_main_~index2~0#1| 32768)) (= |ULTIMATE.start_main_~temp~0#1| 0) (<= ~ARR_SIZE~0 |ULTIMATE.start_main_~row~0#1|) (<= 0 (+ |ULTIMATE.start_main_~index1~0#1| 32768)) (<= |ULTIMATE.start_main_~index2~0#1| 32767) (<= |ULTIMATE.start_main_~index1~0#1| 32767) (<= 0 |ULTIMATE.start_main_~column~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 (+ ~ARR_SIZE~0 32768)) (<= (+ |ULTIMATE.start_main_~num~0#1| 1) 0) (<= 0 |ULTIMATE.start_main_~#array~0#1.base|) (<= 0 (+ |ULTIMATE.start_main_~num~0#1| 1)) (= |ULTIMATE.start_main_~#array~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~row~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= ~ARR_SIZE~0 32767) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (and (<= (+ (* 4 ~ARR_SIZE~0) |ULTIMATE.start_main_~sum~0#1|) (+ 4 (* ~ARR_SIZE~0 ~ARR_SIZE~0))) (<= 0 |ULTIMATE.start_main_~sum~0#1|)) 1 0)) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-25 19:43:55,108 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:43:55,108 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-25 19:43:55,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 14 [2021-11-25 19:43:55,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905231827] [2021-11-25 19:43:55,109 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-25 19:43:55,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 19:43:55,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:43:55,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 19:43:55,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=1037, Unknown=0, NotChecked=0, Total=1190 [2021-11-25 19:43:55,111 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand has 14 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 3 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-25 19:43:55,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:43:55,342 INFO L93 Difference]: Finished difference Result 70 states and 88 transitions. [2021-11-25 19:43:55,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 19:43:55,342 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 3 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 32 [2021-11-25 19:43:55,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:43:55,343 INFO L225 Difference]: With dead ends: 70 [2021-11-25 19:43:55,343 INFO L226 Difference]: Without dead ends: 47 [2021-11-25 19:43:55,345 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 519 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=186, Invalid=1296, Unknown=0, NotChecked=0, Total=1482 [2021-11-25 19:43:55,345 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 77 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:43:55,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 70 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:43:55,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-11-25 19:43:55,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 41. [2021-11-25 19:43:55,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 32 states have (on average 1.25) internal successors, (40), 32 states have internal predecessors, (40), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-25 19:43:55,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 50 transitions. [2021-11-25 19:43:55,354 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 50 transitions. Word has length 32 [2021-11-25 19:43:55,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:43:55,354 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 50 transitions. [2021-11-25 19:43:55,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 3 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-25 19:43:55,354 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 50 transitions. [2021-11-25 19:43:55,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-25 19:43:55,356 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:43:55,356 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:43:55,394 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-25 19:43:55,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:43:55,582 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:43:55,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:43:55,582 INFO L85 PathProgramCache]: Analyzing trace with hash -68836906, now seen corresponding path program 3 times [2021-11-25 19:43:55,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:43:55,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026989955] [2021-11-25 19:43:55,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:43:55,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:43:55,598 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 19:43:55,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [408894773] [2021-11-25 19:43:55,598 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 19:43:55,598 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:43:55,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:43:55,599 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:43:55,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-25 19:43:56,127 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 19:43:56,128 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:43:56,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 65 conjunts are in the unsatisfiable core [2021-11-25 19:43:56,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:43:56,202 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 57 [2021-11-25 19:43:56,208 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 19 [2021-11-25 19:43:56,215 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2021-11-25 19:43:56,276 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 66 [2021-11-25 19:43:56,297 INFO L354 Elim1Store]: treesize reduction 128, result has 19.5 percent of original size [2021-11-25 19:43:56,297 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 65 treesize of output 87 [2021-11-25 19:43:56,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:43:56,327 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 7 [2021-11-25 19:43:56,460 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 92 [2021-11-25 19:43:56,504 INFO L354 Elim1Store]: treesize reduction 343, result has 17.1 percent of original size [2021-11-25 19:43:56,505 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 91 treesize of output 136 [2021-11-25 19:43:56,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:43:56,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:43:56,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:43:56,519 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 24 [2021-11-25 19:43:56,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:43:56,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:43:56,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:43:56,583 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 29 [2021-11-25 19:43:56,704 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 179 treesize of output 162 [2021-11-25 19:43:56,804 INFO L354 Elim1Store]: treesize reduction 707, result has 15.2 percent of original size [2021-11-25 19:43:56,804 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 14 case distinctions, treesize of input 161 treesize of output 211 [2021-11-25 19:43:56,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:43:56,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:43:56,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:43:56,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:43:56,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:43:56,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:43:56,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:43:56,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:43:56,843 INFO L354 Elim1Store]: treesize reduction 57, result has 1.7 percent of original size [2021-11-25 19:43:56,843 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 162 treesize of output 73 [2021-11-25 19:43:56,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:43:56,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:43:56,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:43:56,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:43:56,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:43:56,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:43:56,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:43:56,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:43:56,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:43:56,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:43:56,994 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 169 treesize of output 81 [2021-11-25 19:43:58,447 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 211 treesize of output 186 [2021-11-25 19:43:58,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:43:58,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:43:58,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:43:58,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:43:58,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:43:58,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:43:58,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:43:58,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:43:58,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:43:58,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:43:58,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:43:59,118 INFO L354 Elim1Store]: treesize reduction 801, result has 39.5 percent of original size [2021-11-25 19:43:59,118 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 8 select indices, 8 select index equivalence classes, 11 disjoint index pairs (out of 28 index pairs), introduced 10 new quantified variables, introduced 31 case distinctions, treesize of input 185 treesize of output 635 [2021-11-25 19:44:02,349 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:44:02,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:02,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:02,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:02,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:02,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:02,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:02,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:02,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:02,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:02,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:02,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:02,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:02,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:02,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:02,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:02,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:02,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:02,441 INFO L354 Elim1Store]: treesize reduction 79, result has 1.3 percent of original size [2021-11-25 19:44:02,441 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 4 case distinctions, treesize of input 124 treesize of output 51 [2021-11-25 19:44:02,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:02,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:02,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:02,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:02,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:02,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:02,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:02,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:02,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:02,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:02,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:02,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:02,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:02,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:02,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:02,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:02,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:02,535 INFO L354 Elim1Store]: treesize reduction 79, result has 1.3 percent of original size [2021-11-25 19:44:02,536 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 4 case distinctions, treesize of input 108 treesize of output 48 [2021-11-25 19:44:02,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:02,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:02,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:02,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:02,653 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:44:02,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:02,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:02,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:02,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:02,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:02,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:02,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:02,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:02,675 INFO L354 Elim1Store]: treesize reduction 51, result has 1.9 percent of original size [2021-11-25 19:44:02,675 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 12 disjoint index pairs (out of 21 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 140 treesize of output 51 [2021-11-25 19:44:02,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:02,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:02,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:02,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:02,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:02,744 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:44:02,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:02,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:02,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:02,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:02,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:02,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:02,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:02,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:02,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:02,768 INFO L354 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2021-11-25 19:44:02,768 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 14 disjoint index pairs (out of 21 index pairs), introduced 6 new quantified variables, introduced 1 case distinctions, treesize of input 124 treesize of output 48 [2021-11-25 19:44:03,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:03,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:03,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:03,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:03,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:03,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:03,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:03,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:03,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:03,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:03,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:03,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:03,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:03,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:03,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:03,124 INFO L354 Elim1Store]: treesize reduction 94, result has 34.7 percent of original size [2021-11-25 19:44:03,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 15 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 115 treesize of output 97 [2021-11-25 19:44:03,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:03,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:03,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:03,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:03,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:03,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:03,226 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:44:03,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:03,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:03,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:03,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:03,235 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:44:03,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:03,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:03,251 INFO L354 Elim1Store]: treesize reduction 25, result has 3.8 percent of original size [2021-11-25 19:44:03,252 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 9 disjoint index pairs (out of 21 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 131 treesize of output 1 [2021-11-25 19:44:03,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:03,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:03,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:03,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:03,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:03,413 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:44:03,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:03,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:03,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:03,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:03,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:03,435 INFO L354 Elim1Store]: treesize reduction 25, result has 3.8 percent of original size [2021-11-25 19:44:03,435 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 120 treesize of output 1 [2021-11-25 19:44:03,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:03,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:03,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:03,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:03,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:03,482 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:44:03,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:03,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:03,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:03,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:03,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:03,508 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:44:03,508 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 104 treesize of output 71 [2021-11-25 19:44:03,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:03,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:03,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:03,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:03,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:03,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:03,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:03,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:03,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:03,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:03,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:03,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:03,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:03,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:03,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:03,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:03,762 INFO L354 Elim1Store]: treesize reduction 74, result has 38.3 percent of original size [2021-11-25 19:44:03,763 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 16 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 5 case distinctions, treesize of input 109 treesize of output 93 [2021-11-25 19:44:03,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:03,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:03,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:03,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:03,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:03,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:03,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:03,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:03,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:03,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:03,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:03,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:03,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:03,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:03,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:03,908 INFO L354 Elim1Store]: treesize reduction 122, result has 13.5 percent of original size [2021-11-25 19:44:03,908 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 15 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 125 treesize of output 70 [2021-11-25 19:44:04,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:04,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:04,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:04,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:04,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:04,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:04,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:04,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:04,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:04,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:04,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:04,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:04,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:04,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:04,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:04,169 INFO L354 Elim1Store]: treesize reduction 158, result has 47.9 percent of original size [2021-11-25 19:44:04,169 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 15 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 13 case distinctions, treesize of input 120 treesize of output 195 [2021-11-25 19:44:04,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:04,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:04,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:04,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:04,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:04,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:04,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:04,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:04,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:04,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:04,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:04,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:04,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:04,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:04,505 INFO L354 Elim1Store]: treesize reduction 258, result has 20.4 percent of original size [2021-11-25 19:44:04,505 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 14 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 14 case distinctions, treesize of input 136 treesize of output 119 [2021-11-25 19:44:04,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:04,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:04,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:04,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:04,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:04,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:04,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:04,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:04,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:04,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:04,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:04,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:04,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:04,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:04,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:04,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:04,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:04,868 INFO L354 Elim1Store]: treesize reduction 79, result has 1.3 percent of original size [2021-11-25 19:44:04,869 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 4 case distinctions, treesize of input 124 treesize of output 1 [2021-11-25 19:44:04,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:04,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:04,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:04,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:04,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:04,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:04,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:04,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:04,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:04,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:04,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:04,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:04,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:04,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:04,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:04,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:04,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:04,950 INFO L354 Elim1Store]: treesize reduction 38, result has 52.5 percent of original size [2021-11-25 19:44:04,951 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 4 case distinctions, treesize of input 108 treesize of output 89 [2021-11-25 19:44:05,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:05,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:05,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:05,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:05,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:05,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:05,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:05,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:05,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:05,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:05,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:05,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:05,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:05,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:05,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:05,533 INFO L354 Elim1Store]: treesize reduction 114, result has 14.3 percent of original size [2021-11-25 19:44:05,534 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 15 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 140 treesize of output 73 [2021-11-25 19:44:05,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:05,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:05,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:05,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:05,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:05,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:05,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:05,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:05,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:05,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:05,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:05,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:05,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:05,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:05,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:05,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:05,674 INFO L354 Elim1Store]: treesize reduction 111, result has 0.9 percent of original size [2021-11-25 19:44:05,674 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 16 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 5 case distinctions, treesize of input 124 treesize of output 1 [2021-11-25 19:44:05,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:05,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:05,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:05,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:05,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:05,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:05,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:05,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:05,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:05,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:05,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:05,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:05,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:05,873 INFO L354 Elim1Store]: treesize reduction 295, result has 17.4 percent of original size [2021-11-25 19:44:05,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 13 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 15 case distinctions, treesize of input 136 treesize of output 115 [2021-11-25 19:44:05,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:05,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:05,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:05,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:05,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:05,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:06,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:06,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:06,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:06,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:06,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:06,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:06,082 INFO L354 Elim1Store]: treesize reduction 316, result has 16.4 percent of original size [2021-11-25 19:44:06,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 12 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 16 case distinctions, treesize of input 152 treesize of output 118 [2021-11-25 19:44:06,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:06,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:06,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:06,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:06,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:06,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:06,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:06,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:06,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:06,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:06,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:06,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:06,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:06,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:06,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:06,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:06,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:06,294 INFO L354 Elim1Store]: treesize reduction 87, result has 1.1 percent of original size [2021-11-25 19:44:06,298 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 4 case distinctions, treesize of input 125 treesize of output 1 [2021-11-25 19:44:06,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:06,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:06,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:06,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:06,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:06,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:06,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:06,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:06,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:06,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:06,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:06,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:06,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:06,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:06,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:06,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:06,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:06,372 INFO L354 Elim1Store]: treesize reduction 87, result has 1.1 percent of original size [2021-11-25 19:44:06,372 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 4 case distinctions, treesize of input 141 treesize of output 1 [2021-11-25 19:44:06,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:06,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:06,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:06,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:06,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:06,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:06,469 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:44:06,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:06,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:06,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:06,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:06,477 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:44:06,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:06,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:06,482 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:44:06,484 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 6 disjoint index pairs (out of 21 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 147 treesize of output 54 [2021-11-25 19:44:06,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:06,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:06,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:06,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:06,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:06,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:06,551 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:44:06,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:06,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:06,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:06,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:06,561 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:44:06,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:06,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:06,569 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:44:06,571 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 6 disjoint index pairs (out of 21 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 131 treesize of output 51 [2021-11-25 19:44:06,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:06,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:06,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:06,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:06,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:06,666 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:44:06,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:06,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:06,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:06,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:06,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:06,678 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:44:06,680 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 48 [2021-11-25 19:44:06,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:06,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:06,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:06,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:06,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:06,735 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:44:06,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:06,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:06,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:06,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:06,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:06,746 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:44:06,748 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 136 treesize of output 51 [2021-11-25 19:44:07,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:07,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:07,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:07,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:07,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:07,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:07,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:07,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:07,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:07,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:07,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:07,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:07,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:07,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:07,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:07,082 INFO L354 Elim1Store]: treesize reduction 112, result has 0.9 percent of original size [2021-11-25 19:44:07,083 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 15 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 124 treesize of output 51 [2021-11-25 19:44:07,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:07,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:07,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:07,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:07,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:07,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:07,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:07,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:07,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:07,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:07,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:07,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:07,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:07,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:07,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:07,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:07,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:07,187 INFO L354 Elim1Store]: treesize reduction 55, result has 24.7 percent of original size [2021-11-25 19:44:07,188 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 4 case distinctions, treesize of input 108 treesize of output 66 [2021-11-25 19:44:07,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:07,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:07,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:07,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:07,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:07,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:07,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:07,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:07,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:07,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:07,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:07,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:07,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:07,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:07,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:07,382 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:44:07,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:07,393 INFO L354 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2021-11-25 19:44:07,394 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 14 disjoint index pairs (out of 21 index pairs), introduced 6 new quantified variables, introduced 2 case distinctions, treesize of input 140 treesize of output 54 [2021-11-25 19:44:07,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:07,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:07,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:07,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:07,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:07,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:07,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:07,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:07,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:07,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:07,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:07,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:07,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:07,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:07,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:07,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:07,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:07,463 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:44:07,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:07,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 15 disjoint index pairs (out of 21 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 124 treesize of output 51 [2021-11-25 19:44:07,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:07,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:07,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:07,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:07,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:07,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:07,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:07,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:07,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:07,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:07,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:07,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:07,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:07,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:07,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:07,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:07,945 INFO L354 Elim1Store]: treesize reduction 76, result has 37.7 percent of original size [2021-11-25 19:44:07,945 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 16 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 5 case distinctions, treesize of input 113 treesize of output 93 [2021-11-25 19:44:08,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,064 INFO L354 Elim1Store]: treesize reduction 153, result has 0.6 percent of original size [2021-11-25 19:44:08,064 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 15 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 129 treesize of output 1 [2021-11-25 19:44:08,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,142 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:44:08,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,159 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:44:08,160 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 71 [2021-11-25 19:44:08,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,234 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:44:08,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,236 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:44:08,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,241 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 48 [2021-11-25 19:44:08,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,415 INFO L354 Elim1Store]: treesize reduction 25, result has 3.8 percent of original size [2021-11-25 19:44:08,415 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 14 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 1 [2021-11-25 19:44:08,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,468 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:44:08,469 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 14 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 71 [2021-11-25 19:44:08,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,700 INFO L354 Elim1Store]: treesize reduction 121, result has 0.8 percent of original size [2021-11-25 19:44:08,701 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 16 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 5 case distinctions, treesize of input 129 treesize of output 1 [2021-11-25 19:44:08,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,776 INFO L354 Elim1Store]: treesize reduction 179, result has 0.6 percent of original size [2021-11-25 19:44:08,777 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 14 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 7 case distinctions, treesize of input 145 treesize of output 1 [2021-11-25 19:44:08,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,844 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:44:08,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,847 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:44:08,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,852 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 48 [2021-11-25 19:44:08,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,905 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:44:08,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,919 INFO L354 Elim1Store]: treesize reduction 58, result has 1.7 percent of original size [2021-11-25 19:44:08,919 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 133 treesize of output 1 [2021-11-25 19:44:08,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:08,999 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:44:09,001 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 134 treesize of output 51 [2021-11-25 19:44:09,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:09,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:09,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:09,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:09,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:09,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:09,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:09,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:09,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:09,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:09,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:09,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:09,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:09,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:09,080 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:44:09,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 48 [2021-11-25 19:44:10,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:10,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:10,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:10,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:10,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:10,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:10,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:10,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:10,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:10,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:10,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:10,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:10,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:10,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:10,894 INFO L354 Elim1Store]: treesize reduction 217, result has 37.3 percent of original size [2021-11-25 19:44:10,894 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 14 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 14 case distinctions, treesize of input 297 treesize of output 328 [2021-11-25 19:44:12,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:12,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:12,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:12,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:12,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:12,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:12,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:12,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:12,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:12,249 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:44:12,249 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 98 treesize of output 36 [2021-11-25 19:44:12,367 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 4 proven. 36 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 19:44:12,367 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:45:17,989 WARN L227 SmtUtils]: Spent 55.34s on a formula simplification. DAG size of input: 98 DAG size of output: 97 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:45:35,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 51 [2021-11-25 19:45:35,970 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:45:35,971 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 51 treesize of output 58 [2021-11-25 19:45:36,193 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 4 [2021-11-25 19:45:36,510 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 4 [2021-11-25 19:45:37,828 INFO L354 Elim1Store]: treesize reduction 260, result has 56.4 percent of original size [2021-11-25 19:45:37,829 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 924419 treesize of output 876598 [2021-11-25 19:45:39,931 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:45:39,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026989955] [2021-11-25 19:45:39,932 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 19:45:39,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408894773] [2021-11-25 19:45:39,932 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-25 19:45:39,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [802471435] [2021-11-25 19:45:39,935 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2021-11-25 19:45:39,935 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:45:39,936 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:45:39,936 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:45:39,936 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:45:39,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:45:40,042 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-25 19:45:40,042 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 52 treesize of output 68 [2021-11-25 19:45:40,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:45:40,126 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-25 19:45:40,126 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2021-11-25 19:45:40,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:45:40,157 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 51 [2021-11-25 19:45:40,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:45:40,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:45:40,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:45:40,301 INFO L354 Elim1Store]: treesize reduction 106, result has 6.2 percent of original size [2021-11-25 19:45:40,302 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 352 treesize of output 349 [2021-11-25 19:45:40,360 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2021-11-25 19:45:40,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:45:40,508 INFO L354 Elim1Store]: treesize reduction 71, result has 9.0 percent of original size [2021-11-25 19:45:40,509 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 192 treesize of output 194 [2021-11-25 19:45:40,548 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2021-11-25 19:45:40,574 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2021-11-25 19:45:40,626 INFO L354 Elim1Store]: treesize reduction 114, result has 21.9 percent of original size [2021-11-25 19:45:40,626 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 103 treesize of output 108 [2021-11-25 19:45:40,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2021-11-25 19:45:40,835 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 29 [2021-11-25 19:45:41,137 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2021-11-25 19:45:41,177 INFO L354 Elim1Store]: treesize reduction 114, result has 21.9 percent of original size [2021-11-25 19:45:41,178 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 103 treesize of output 108 [2021-11-25 19:45:41,214 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2021-11-25 19:45:41,227 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 14 for LOIs [2021-11-25 19:45:41,229 INFO L197 IcfgInterpreter]: Interpreting procedure outerBoundaryPatternCheck with input of size 37 for LOIs [2021-11-25 19:45:41,238 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:45:48,511 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1568#(and (<= 0 (+ |ULTIMATE.start_main_~index2~0#1| 32768)) (= |ULTIMATE.start_main_~temp~0#1| 0) (<= ~ARR_SIZE~0 |ULTIMATE.start_main_~row~0#1|) (<= 0 (+ |ULTIMATE.start_main_~index1~0#1| 32768)) (<= |ULTIMATE.start_main_~index2~0#1| 32767) (<= |ULTIMATE.start_main_~index1~0#1| 32767) (<= 0 |ULTIMATE.start_main_~column~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 (+ ~ARR_SIZE~0 32768)) (<= (+ |ULTIMATE.start_main_~num~0#1| 1) 0) (<= 0 |ULTIMATE.start_main_~#array~0#1.base|) (<= 0 (+ |ULTIMATE.start_main_~num~0#1| 1)) (= |ULTIMATE.start_main_~#array~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~row~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= ~ARR_SIZE~0 32767) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (and (<= (+ (* 4 ~ARR_SIZE~0) |ULTIMATE.start_main_~sum~0#1|) (+ 4 (* ~ARR_SIZE~0 ~ARR_SIZE~0))) (<= 0 |ULTIMATE.start_main_~sum~0#1|)) 1 0)) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-25 19:45:48,511 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:45:48,511 INFO L186 FreeRefinementEngine]: Found 0 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:45:48,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-11-25 19:45:48,512 ERROR L172 FreeRefinementEngine]: Strategy SIFA_TAIPAN failed to provide any proof altough trace is infeasible [2021-11-25 19:45:48,512 INFO L628 BasicCegarLoop]: Counterexample might be feasible [2021-11-25 19:45:48,517 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-25 19:45:48,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-25 19:45:48,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:45:48,736 INFO L732 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1] [2021-11-25 19:45:48,739 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-25 19:45:48,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 07:45:48 BoogieIcfgContainer [2021-11-25 19:45:48,756 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-25 19:45:48,756 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 19:45:48,756 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 19:45:48,757 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 19:45:48,757 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:43:45" (3/4) ... [2021-11-25 19:45:48,759 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-25 19:45:48,760 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 19:45:48,760 INFO L158 Benchmark]: Toolchain (without parser) took 123807.17ms. Allocated memory was 96.5MB in the beginning and 249.6MB in the end (delta: 153.1MB). Free memory was 58.2MB in the beginning and 88.8MB in the end (delta: -30.7MB). Peak memory consumption was 121.6MB. Max. memory is 16.1GB. [2021-11-25 19:45:48,760 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 96.5MB. Free memory is still 75.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 19:45:48,760 INFO L158 Benchmark]: CACSL2BoogieTranslator took 298.20ms. Allocated memory is still 96.5MB. Free memory was 58.0MB in the beginning and 71.0MB in the end (delta: -13.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-25 19:45:48,761 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.01ms. Allocated memory is still 96.5MB. Free memory was 71.0MB in the beginning and 69.1MB in the end (delta: 1.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-25 19:45:48,761 INFO L158 Benchmark]: Boogie Preprocessor took 26.77ms. Allocated memory is still 96.5MB. Free memory was 69.1MB in the beginning and 68.0MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 19:45:48,762 INFO L158 Benchmark]: RCFGBuilder took 484.95ms. Allocated memory is still 96.5MB. Free memory was 68.0MB in the beginning and 53.7MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-25 19:45:48,762 INFO L158 Benchmark]: TraceAbstraction took 122931.83ms. Allocated memory was 96.5MB in the beginning and 249.6MB in the end (delta: 153.1MB). Free memory was 53.1MB in the beginning and 89.9MB in the end (delta: -36.8MB). Peak memory consumption was 118.1MB. Max. memory is 16.1GB. [2021-11-25 19:45:48,762 INFO L158 Benchmark]: Witness Printer took 3.41ms. Allocated memory is still 249.6MB. Free memory was 89.9MB in the beginning and 88.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 19:45:48,764 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 96.5MB. Free memory is still 75.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 298.20ms. Allocated memory is still 96.5MB. Free memory was 58.0MB in the beginning and 71.0MB in the end (delta: -13.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.01ms. Allocated memory is still 96.5MB. Free memory was 71.0MB in the beginning and 69.1MB in the end (delta: 1.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.77ms. Allocated memory is still 96.5MB. Free memory was 69.1MB in the beginning and 68.0MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 484.95ms. Allocated memory is still 96.5MB. Free memory was 68.0MB in the beginning and 53.7MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 122931.83ms. Allocated memory was 96.5MB in the beginning and 249.6MB in the end (delta: 153.1MB). Free memory was 53.1MB in the beginning and 89.9MB in the end (delta: -36.8MB). Peak memory consumption was 118.1MB. Max. memory is 16.1GB. * Witness Printer took 3.41ms. Allocated memory is still 249.6MB. Free memory was 89.9MB in the beginning and 88.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 33]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L37] signed long long ARR_SIZE ; [L49] ARR_SIZE = (signed long long)__VERIFIER_nondet_short() [L50] CALL assume_abort_if_not(ARR_SIZE > 1) [L31] COND FALSE !(!cond) [L50] RET assume_abort_if_not(ARR_SIZE > 1) [L52] int array[ARR_SIZE][ARR_SIZE] ; [L54] int row = 0, column = 0, num = -1 ; [L55] signed long long sum = 0 ; [L56] int temp ; [L57] short index1,index2 ; [L59] row=0 [L59] COND TRUE row=0 && index1 < ARR_SIZE) [L31] COND FALSE !(!cond) [L68] RET assume_abort_if_not(index1>=0 && index1 < ARR_SIZE) [L69] CALL assume_abort_if_not(index2>=0 && index2 < ARR_SIZE) [L31] COND FALSE !(!cond) [L69] RET assume_abort_if_not(index2>=0 && index2 < ARR_SIZE) [L72] CALL, EXPR outerBoundaryPatternCheck(index1) [L41] COND TRUE (index == 0) || (index == ARR_SIZE-1) [L42] return 1 ; [L72] RET, EXPR outerBoundaryPatternCheck(index1) [L72] EXPR outerBoundaryPatternCheck(index1)||outerBoundaryPatternCheck(index2) [L72] EXPR (outerBoundaryPatternCheck(index1)||outerBoundaryPatternCheck(index2)) ? array[index1][index2] : (num*num) [L72] array[index1][index2] = (outerBoundaryPatternCheck(index1)||outerBoundaryPatternCheck(index2)) ? array[index1][index2] : (num*num) [L75] temp = __VERIFIER_nondet_int() [L76] COND TRUE temp == 0 [L79] row=0 [L79] COND TRUE row= 0 && sum <= (ARR_SIZE-2)*(ARR_SIZE-2)) [L33] COND TRUE !(cond) [L33] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 122.8s, OverallIterations: 6, TraceHistogramMax: 4, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 164 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 156 mSDsluCounter, 236 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 168 mSDsCounter, 71 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 340 IncrementalHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 71 mSolverCounterUnsat, 93 mSDtfsCounter, 340 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 249 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 788 ImplicationChecksByTransitivity, 3.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=5, InterpolantAutomatonStates: 30, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 8 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 104.8s InterpolantComputationTime, 165 NumberOfCodeBlocks, 153 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 219 ConstructedInterpolants, 6 QuantifiedInterpolants, 3469 SizeOfPredicates, 27 NumberOfNonLiveVariables, 714 ConjunctsInSsa, 100 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 58/104 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-25 19:45:48,918 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-patterns/array24_pattern.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b41c571dabcbc4670dde65107f8da5b879f13435b678b4e9a9cdcc7ef0066cf6 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:45:51,135 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:45:51,137 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:45:51,193 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:45:51,194 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:45:51,199 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:45:51,201 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:45:51,206 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:45:51,209 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:45:51,220 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:45:51,221 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:45:51,223 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:45:51,224 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:45:51,226 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:45:51,228 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:45:51,230 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:45:51,235 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:45:51,237 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:45:51,239 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:45:51,243 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:45:51,248 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:45:51,250 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:45:51,253 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:45:51,255 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:45:51,261 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:45:51,261 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:45:51,262 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:45:51,264 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:45:51,264 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:45:51,265 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:45:51,266 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:45:51,267 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:45:51,269 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:45:51,270 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:45:51,271 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:45:51,272 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:45:51,273 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:45:51,273 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:45:51,273 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:45:51,275 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:45:51,276 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:45:51,281 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-25 19:45:51,330 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:45:51,331 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:45:51,331 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:45:51,332 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:45:51,333 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:45:51,333 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:45:51,333 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:45:51,333 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:45:51,334 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:45:51,334 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:45:51,335 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:45:51,335 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:45:51,337 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:45:51,337 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 19:45:51,337 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 19:45:51,337 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:45:51,337 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:45:51,338 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:45:51,338 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:45:51,338 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-25 19:45:51,338 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-25 19:45:51,339 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-25 19:45:51,339 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 19:45:51,339 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:45:51,339 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:45:51,339 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:45:51,340 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:45:51,340 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-25 19:45:51,340 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:45:51,340 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:45:51,341 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:45:51,341 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:45:51,341 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:45:51,342 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-25 19:45:51,342 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-25 19:45:51,342 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:45:51,342 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:45:51,343 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:45:51,343 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b41c571dabcbc4670dde65107f8da5b879f13435b678b4e9a9cdcc7ef0066cf6 [2021-11-25 19:45:51,750 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:45:51,778 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:45:51,781 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:45:51,782 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:45:51,783 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:45:51,784 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/array-patterns/array24_pattern.c [2021-11-25 19:45:51,864 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/data/d74f53e70/be98ca7cf5ea41c0bbf1e863a1660620/FLAG935280fe2 [2021-11-25 19:45:52,406 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:45:52,407 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/sv-benchmarks/c/array-patterns/array24_pattern.c [2021-11-25 19:45:52,413 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/data/d74f53e70/be98ca7cf5ea41c0bbf1e863a1660620/FLAG935280fe2 [2021-11-25 19:45:52,747 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/data/d74f53e70/be98ca7cf5ea41c0bbf1e863a1660620 [2021-11-25 19:45:52,749 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:45:52,751 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:45:52,752 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:45:52,752 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:45:52,756 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:45:52,757 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:45:52" (1/1) ... [2021-11-25 19:45:52,758 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c921caf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:45:52, skipping insertion in model container [2021-11-25 19:45:52,758 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:45:52" (1/1) ... [2021-11-25 19:45:52,765 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:45:52,783 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:45:52,915 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/sv-benchmarks/c/array-patterns/array24_pattern.c[1359,1372] [2021-11-25 19:45:52,940 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:45:52,950 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:45:52,963 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/sv-benchmarks/c/array-patterns/array24_pattern.c[1359,1372] [2021-11-25 19:45:52,976 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:45:52,991 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:45:52,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:45:52 WrapperNode [2021-11-25 19:45:52,992 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:45:52,993 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:45:52,993 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:45:52,994 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:45:53,001 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:45:52" (1/1) ... [2021-11-25 19:45:53,010 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:45:52" (1/1) ... [2021-11-25 19:45:53,031 INFO L137 Inliner]: procedures = 19, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 99 [2021-11-25 19:45:53,032 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:45:53,033 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:45:53,033 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:45:53,033 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:45:53,042 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:45:52" (1/1) ... [2021-11-25 19:45:53,042 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:45:52" (1/1) ... [2021-11-25 19:45:53,046 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:45:52" (1/1) ... [2021-11-25 19:45:53,046 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:45:52" (1/1) ... [2021-11-25 19:45:53,053 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:45:52" (1/1) ... [2021-11-25 19:45:53,066 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:45:52" (1/1) ... [2021-11-25 19:45:53,068 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:45:52" (1/1) ... [2021-11-25 19:45:53,071 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:45:53,072 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:45:53,072 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:45:53,072 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:45:53,073 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:45:52" (1/1) ... [2021-11-25 19:45:53,095 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:45:53,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:45:53,123 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:45:53,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:45:53,176 INFO L130 BoogieDeclarations]: Found specification of procedure outerBoundaryPatternCheck [2021-11-25 19:45:53,176 INFO L138 BoogieDeclarations]: Found implementation of procedure outerBoundaryPatternCheck [2021-11-25 19:45:53,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:45:53,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-25 19:45:53,178 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-25 19:45:53,179 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-25 19:45:53,179 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 19:45:53,179 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-25 19:45:53,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:45:53,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:45:53,180 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 19:45:53,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-25 19:45:53,284 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:45:53,285 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:45:53,672 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:45:53,678 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:45:53,679 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-25 19:45:53,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:45:53 BoogieIcfgContainer [2021-11-25 19:45:53,680 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:45:53,681 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:45:53,682 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:45:53,685 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:45:53,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:45:52" (1/3) ... [2021-11-25 19:45:53,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48ce0035 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:45:53, skipping insertion in model container [2021-11-25 19:45:53,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:45:52" (2/3) ... [2021-11-25 19:45:53,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48ce0035 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:45:53, skipping insertion in model container [2021-11-25 19:45:53,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:45:53" (3/3) ... [2021-11-25 19:45:53,688 INFO L111 eAbstractionObserver]: Analyzing ICFG array24_pattern.c [2021-11-25 19:45:53,693 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:45:53,694 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 19:45:53,764 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:45:53,781 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 19:45:53,782 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 19:45:53,824 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 32 states have internal predecessors, (48), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-25 19:45:53,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-25 19:45:53,829 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:45:53,830 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:45:53,830 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:45:53,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:45:53,836 INFO L85 PathProgramCache]: Analyzing trace with hash 2136211159, now seen corresponding path program 1 times [2021-11-25 19:45:53,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:45:53,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [62867286] [2021-11-25 19:45:53,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:45:53,850 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:45:53,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:45:53,853 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:45:53,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-25 19:45:53,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:45:53,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-25 19:45:53,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:45:54,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:45:54,069 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:45:54,070 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:45:54,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [62867286] [2021-11-25 19:45:54,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [62867286] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:45:54,072 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:45:54,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 19:45:54,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38488571] [2021-11-25 19:45:54,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:45:54,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-25 19:45:54,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:45:54,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-25 19:45:54,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 19:45:54,119 INFO L87 Difference]: Start difference. First operand has 40 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 32 states have internal predecessors, (48), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-25 19:45:54,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:45:54,151 INFO L93 Difference]: Finished difference Result 77 states and 115 transitions. [2021-11-25 19:45:54,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 19:45:54,154 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-11-25 19:45:54,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:45:54,162 INFO L225 Difference]: With dead ends: 77 [2021-11-25 19:45:54,162 INFO L226 Difference]: Without dead ends: 36 [2021-11-25 19:45:54,166 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 19:45:54,171 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:45:54,173 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:45:54,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-11-25 19:45:54,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-11-25 19:45:54,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 28 states have internal predecessors, (36), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-25 19:45:54,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 46 transitions. [2021-11-25 19:45:54,224 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 46 transitions. Word has length 15 [2021-11-25 19:45:54,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:45:54,225 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 46 transitions. [2021-11-25 19:45:54,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-25 19:45:54,225 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 46 transitions. [2021-11-25 19:45:54,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-25 19:45:54,230 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:45:54,230 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:45:54,249 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-25 19:45:54,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:45:54,445 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:45:54,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:45:54,447 INFO L85 PathProgramCache]: Analyzing trace with hash -699940082, now seen corresponding path program 1 times [2021-11-25 19:45:54,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:45:54,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2070055785] [2021-11-25 19:45:54,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:45:54,448 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:45:54,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:45:54,454 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:45:54,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-25 19:45:54,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:45:54,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 19:45:54,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:45:54,947 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-25 19:45:54,947 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:45:54,948 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:45:54,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2070055785] [2021-11-25 19:45:54,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2070055785] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:45:54,948 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:45:54,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 19:45:54,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960195851] [2021-11-25 19:45:54,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:45:54,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 19:45:54,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:45:54,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 19:45:54,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:45:54,952 INFO L87 Difference]: Start difference. First operand 36 states and 46 transitions. Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-25 19:45:54,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:45:54,969 INFO L93 Difference]: Finished difference Result 69 states and 86 transitions. [2021-11-25 19:45:54,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:45:54,969 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 35 [2021-11-25 19:45:54,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:45:54,971 INFO L225 Difference]: With dead ends: 69 [2021-11-25 19:45:54,971 INFO L226 Difference]: Without dead ends: 41 [2021-11-25 19:45:54,972 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:45:54,973 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 2 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 53 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:45:54,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 121 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 53 Unchecked, 0.0s Time] [2021-11-25 19:45:54,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-11-25 19:45:54,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-11-25 19:45:54,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 32 states have (on average 1.25) internal successors, (40), 32 states have internal predecessors, (40), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-25 19:45:54,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 50 transitions. [2021-11-25 19:45:54,985 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 50 transitions. Word has length 35 [2021-11-25 19:45:54,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:45:54,985 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 50 transitions. [2021-11-25 19:45:54,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-25 19:45:54,986 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 50 transitions. [2021-11-25 19:45:54,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-25 19:45:54,987 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:45:54,987 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:45:55,006 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-25 19:45:55,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:45:55,203 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:45:55,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:45:55,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1511137102, now seen corresponding path program 1 times [2021-11-25 19:45:55,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:45:55,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [850307235] [2021-11-25 19:45:55,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:45:55,205 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:45:55,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:45:55,206 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:45:55,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-25 19:45:55,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:45:55,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 19:45:55,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:45:55,680 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-25 19:45:55,680 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:45:55,681 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:45:55,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [850307235] [2021-11-25 19:45:55,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [850307235] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:45:55,681 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:45:55,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 19:45:55,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589078693] [2021-11-25 19:45:55,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:45:55,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 19:45:55,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:45:55,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 19:45:55,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:45:55,684 INFO L87 Difference]: Start difference. First operand 41 states and 50 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-25 19:45:55,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:45:55,695 INFO L93 Difference]: Finished difference Result 74 states and 93 transitions. [2021-11-25 19:45:55,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:45:55,696 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 38 [2021-11-25 19:45:55,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:45:55,697 INFO L225 Difference]: With dead ends: 74 [2021-11-25 19:45:55,697 INFO L226 Difference]: Without dead ends: 42 [2021-11-25 19:45:55,698 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:45:55,699 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 1 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 38 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:45:55,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 117 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 38 Unchecked, 0.0s Time] [2021-11-25 19:45:55,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-11-25 19:45:55,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-11-25 19:45:55,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 33 states have internal predecessors, (41), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-25 19:45:55,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 51 transitions. [2021-11-25 19:45:55,709 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 51 transitions. Word has length 38 [2021-11-25 19:45:55,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:45:55,709 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 51 transitions. [2021-11-25 19:45:55,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-25 19:45:55,710 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 51 transitions. [2021-11-25 19:45:55,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-25 19:45:55,711 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:45:55,712 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:45:55,733 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-25 19:45:55,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:45:55,924 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:45:55,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:45:55,924 INFO L85 PathProgramCache]: Analyzing trace with hash -50149008, now seen corresponding path program 1 times [2021-11-25 19:45:55,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:45:55,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [184694132] [2021-11-25 19:45:55,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:45:55,925 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:45:55,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:45:55,926 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:45:55,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-25 19:45:56,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:45:56,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 19:45:56,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:45:56,453 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-25 19:45:56,453 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:45:56,860 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 19:45:56,860 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:45:56,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [184694132] [2021-11-25 19:45:56,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [184694132] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:45:56,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [966415223] [2021-11-25 19:45:56,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:45:56,861 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:45:56,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:45:56,874 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:45:56,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2021-11-25 19:45:57,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:45:57,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-25 19:45:57,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:45:57,736 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-25 19:45:57,736 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:45:58,227 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-25 19:45:58,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [966415223] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:45:58,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084372472] [2021-11-25 19:45:58,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:45:58,228 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:45:58,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:45:58,239 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:45:58,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-25 19:45:58,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:45:58,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-25 19:45:58,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:45:58,786 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-25 19:45:58,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:45:59,216 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 19:45:59,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2084372472] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:45:59,217 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-25 19:45:59,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8, 7, 8, 8] total 31 [2021-11-25 19:45:59,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447880920] [2021-11-25 19:45:59,217 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-25 19:45:59,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-25 19:45:59,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:45:59,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-25 19:45:59,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=745, Unknown=0, NotChecked=0, Total=930 [2021-11-25 19:45:59,220 INFO L87 Difference]: Start difference. First operand 42 states and 51 transitions. Second operand has 31 states, 31 states have (on average 3.064516129032258) internal successors, (95), 30 states have internal predecessors, (95), 5 states have call successors, (14), 4 states have call predecessors, (14), 7 states have return successors, (18), 8 states have call predecessors, (18), 5 states have call successors, (18) [2021-11-25 19:46:00,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:46:00,298 INFO L93 Difference]: Finished difference Result 93 states and 119 transitions. [2021-11-25 19:46:00,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-25 19:46:00,299 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.064516129032258) internal successors, (95), 30 states have internal predecessors, (95), 5 states have call successors, (14), 4 states have call predecessors, (14), 7 states have return successors, (18), 8 states have call predecessors, (18), 5 states have call successors, (18) Word has length 40 [2021-11-25 19:46:00,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:46:00,302 INFO L225 Difference]: With dead ends: 93 [2021-11-25 19:46:00,302 INFO L226 Difference]: Without dead ends: 61 [2021-11-25 19:46:00,304 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 203 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=270, Invalid=1136, Unknown=0, NotChecked=0, Total=1406 [2021-11-25 19:46:00,305 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 71 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 137 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-25 19:46:00,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 213 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 220 Invalid, 0 Unknown, 137 Unchecked, 0.7s Time] [2021-11-25 19:46:00,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-11-25 19:46:00,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 57. [2021-11-25 19:46:00,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 46 states have (on average 1.2391304347826086) internal successors, (57), 47 states have internal predecessors, (57), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-25 19:46:00,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 69 transitions. [2021-11-25 19:46:00,317 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 69 transitions. Word has length 40 [2021-11-25 19:46:00,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:46:00,317 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 69 transitions. [2021-11-25 19:46:00,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.064516129032258) internal successors, (95), 30 states have internal predecessors, (95), 5 states have call successors, (14), 4 states have call predecessors, (14), 7 states have return successors, (18), 8 states have call predecessors, (18), 5 states have call successors, (18) [2021-11-25 19:46:00,318 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 69 transitions. [2021-11-25 19:46:00,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-25 19:46:00,320 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:46:00,320 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:46:00,329 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-25 19:46:00,530 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (6)] Ended with exit code 0 [2021-11-25 19:46:00,749 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-25 19:46:00,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:46:00,927 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:46:00,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:46:00,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1044368361, now seen corresponding path program 1 times [2021-11-25 19:46:00,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:46:00,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1071060390] [2021-11-25 19:46:00,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:46:00,929 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:46:00,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:46:00,930 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:46:00,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-25 19:46:01,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:46:01,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-25 19:46:01,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:46:01,720 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 19:46:01,720 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:46:02,462 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-25 19:46:02,463 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:46:02,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1071060390] [2021-11-25 19:46:02,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1071060390] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:46:02,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [359622312] [2021-11-25 19:46:02,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:46:02,463 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:46:02,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:46:02,470 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:46:02,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-25 19:46:02,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:46:02,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-25 19:46:02,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:46:03,135 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 19:46:03,135 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:46:03,667 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-25 19:46:03,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [359622312] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:46:03,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944039229] [2021-11-25 19:46:03,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:46:03,668 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:46:03,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:46:03,675 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:46:03,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-25 19:46:03,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:46:03,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 19:46:03,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:46:04,175 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-25 19:46:04,175 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:46:04,566 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-25 19:46:04,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [944039229] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:46:04,567 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-25 19:46:04,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 10, 9, 7, 8] total 34 [2021-11-25 19:46:04,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262876365] [2021-11-25 19:46:04,567 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-25 19:46:04,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-25 19:46:04,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:46:04,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-25 19:46:04,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=884, Unknown=0, NotChecked=0, Total=1122 [2021-11-25 19:46:04,570 INFO L87 Difference]: Start difference. First operand 57 states and 69 transitions. Second operand has 34 states, 34 states have (on average 2.5) internal successors, (85), 31 states have internal predecessors, (85), 3 states have call successors, (8), 3 states have call predecessors, (8), 6 states have return successors, (12), 6 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-25 19:46:09,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:46:09,760 INFO L93 Difference]: Finished difference Result 219 states and 290 transitions. [2021-11-25 19:46:09,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-11-25 19:46:09,761 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.5) internal successors, (85), 31 states have internal predecessors, (85), 3 states have call successors, (8), 3 states have call predecessors, (8), 6 states have return successors, (12), 6 states have call predecessors, (12), 3 states have call successors, (12) Word has length 47 [2021-11-25 19:46:09,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:46:09,764 INFO L225 Difference]: With dead ends: 219 [2021-11-25 19:46:09,764 INFO L226 Difference]: Without dead ends: 174 [2021-11-25 19:46:09,767 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 242 SyntacticMatches, 3 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1575 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=842, Invalid=3448, Unknown=0, NotChecked=0, Total=4290 [2021-11-25 19:46:09,769 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 213 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 244 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:46:09,769 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [217 Valid, 300 Invalid, 921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 502 Invalid, 0 Unknown, 244 Unchecked, 2.1s Time] [2021-11-25 19:46:09,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2021-11-25 19:46:09,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 145. [2021-11-25 19:46:09,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 126 states have (on average 1.2698412698412698) internal successors, (160), 128 states have internal predecessors, (160), 11 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-25 19:46:09,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 182 transitions. [2021-11-25 19:46:09,808 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 182 transitions. Word has length 47 [2021-11-25 19:46:09,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:46:09,809 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 182 transitions. [2021-11-25 19:46:09,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.5) internal successors, (85), 31 states have internal predecessors, (85), 3 states have call successors, (8), 3 states have call predecessors, (8), 6 states have return successors, (12), 6 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-25 19:46:09,809 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 182 transitions. [2021-11-25 19:46:09,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-25 19:46:09,812 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:46:09,812 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:46:09,822 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-11-25 19:46:10,041 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-11-25 19:46:10,223 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-11-25 19:46:10,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:46:10,415 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:46:10,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:46:10,416 INFO L85 PathProgramCache]: Analyzing trace with hash -596823527, now seen corresponding path program 2 times [2021-11-25 19:46:10,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:46:10,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1118253344] [2021-11-25 19:46:10,416 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-25 19:46:10,417 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:46:10,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:46:10,418 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:46:10,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-25 19:46:10,587 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-25 19:46:10,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:46:10,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 19:46:10,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:46:11,233 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-25 19:46:11,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:46:11,637 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-25 19:46:11,637 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:46:11,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1118253344] [2021-11-25 19:46:11,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1118253344] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:46:11,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [975727572] [2021-11-25 19:46:11,638 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-25 19:46:11,638 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:46:11,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:46:11,641 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:46:11,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-11-25 19:46:11,890 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-25 19:46:11,890 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:46:11,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-25 19:46:11,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:46:12,503 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 20 proven. 13 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-25 19:46:12,503 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:46:13,099 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-25 19:46:13,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [975727572] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:46:13,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833227037] [2021-11-25 19:46:13,100 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-25 19:46:13,100 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:46:13,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:46:13,101 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:46:13,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-25 19:46:13,275 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-25 19:46:13,275 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:46:13,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 19:46:13,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:46:13,635 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:46:13,636 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:46:13,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833227037] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:46:13,636 INFO L186 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2021-11-25 19:46:13,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 7, 11, 9] total 31 [2021-11-25 19:46:13,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448405488] [2021-11-25 19:46:13,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:46:13,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 19:46:13,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:46:13,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 19:46:13,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=722, Unknown=0, NotChecked=0, Total=930 [2021-11-25 19:46:13,638 INFO L87 Difference]: Start difference. First operand 145 states and 182 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-25 19:46:14,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:46:14,085 INFO L93 Difference]: Finished difference Result 208 states and 261 transitions. [2021-11-25 19:46:14,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 19:46:14,085 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 55 [2021-11-25 19:46:14,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:46:14,088 INFO L225 Difference]: With dead ends: 208 [2021-11-25 19:46:14,088 INFO L226 Difference]: Without dead ends: 152 [2021-11-25 19:46:14,090 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 239 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 430 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=241, Invalid=881, Unknown=0, NotChecked=0, Total=1122 [2021-11-25 19:46:14,091 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 37 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:46:14,091 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 93 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 19:46:14,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-11-25 19:46:14,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 147. [2021-11-25 19:46:14,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 128 states have (on average 1.25) internal successors, (160), 130 states have internal predecessors, (160), 11 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-25 19:46:14,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 182 transitions. [2021-11-25 19:46:14,112 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 182 transitions. Word has length 55 [2021-11-25 19:46:14,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:46:14,113 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 182 transitions. [2021-11-25 19:46:14,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-25 19:46:14,113 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 182 transitions. [2021-11-25 19:46:14,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-25 19:46:14,116 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:46:14,117 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:46:14,125 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (12)] Ended with exit code 0 [2021-11-25 19:46:14,328 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-25 19:46:14,543 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-11-25 19:46:14,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:46:14,720 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:46:14,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:46:14,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1130428071, now seen corresponding path program 3 times [2021-11-25 19:46:14,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:46:14,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1885184235] [2021-11-25 19:46:14,721 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 19:46:14,721 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:46:14,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:46:14,722 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:46:14,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-25 19:46:14,847 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-25 19:46:14,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:46:14,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-25 19:46:14,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:46:15,569 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-11-25 19:46:15,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:46:15,862 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:46:15,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1885184235] [2021-11-25 19:46:15,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1885184235] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:46:15,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [666275742] [2021-11-25 19:46:15,863 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 19:46:15,863 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:46:15,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:46:15,870 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:46:15,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-25 19:46:16,081 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-25 19:46:16,081 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:46:16,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-25 19:46:16,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:46:16,529 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-11-25 19:46:16,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:46:17,072 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2021-11-25 19:46:17,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [666275742] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:46:17,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289852744] [2021-11-25 19:46:17,073 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 19:46:17,073 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:46:17,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:46:17,074 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:46:17,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-25 19:46:17,217 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-25 19:46:17,217 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:46:17,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-25 19:46:17,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:46:17,713 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-11-25 19:46:17,714 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:46:18,055 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2021-11-25 19:46:18,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289852744] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:46:18,056 INFO L186 FreeRefinementEngine]: Found 0 perfect and 5 imperfect interpolant sequences. [2021-11-25 19:46:18,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8, 8, 8] total 16 [2021-11-25 19:46:18,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611314117] [2021-11-25 19:46:18,056 INFO L85 oduleStraightlineAll]: Using 5 imperfect interpolants to construct interpolant automaton [2021-11-25 19:46:18,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-25 19:46:18,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:46:18,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-25 19:46:18,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2021-11-25 19:46:18,058 INFO L87 Difference]: Start difference. First operand 147 states and 182 transitions. Second operand has 16 states, 16 states have (on average 4.1875) internal successors, (67), 16 states have internal predecessors, (67), 4 states have call successors, (8), 3 states have call predecessors, (8), 5 states have return successors, (9), 2 states have call predecessors, (9), 4 states have call successors, (9) [2021-11-25 19:46:18,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:46:18,282 INFO L93 Difference]: Finished difference Result 247 states and 319 transitions. [2021-11-25 19:46:18,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-25 19:46:18,283 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.1875) internal successors, (67), 16 states have internal predecessors, (67), 4 states have call successors, (8), 3 states have call predecessors, (8), 5 states have return successors, (9), 2 states have call predecessors, (9), 4 states have call successors, (9) Word has length 59 [2021-11-25 19:46:18,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:46:18,286 INFO L225 Difference]: With dead ends: 247 [2021-11-25 19:46:18,286 INFO L226 Difference]: Without dead ends: 243 [2021-11-25 19:46:18,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 292 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2021-11-25 19:46:18,288 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 62 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 60 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:46:18,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 185 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 60 Unchecked, 0.2s Time] [2021-11-25 19:46:18,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-11-25 19:46:18,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 195. [2021-11-25 19:46:18,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 163 states have (on average 1.2699386503067485) internal successors, (207), 165 states have internal predecessors, (207), 20 states have call successors, (20), 11 states have call predecessors, (20), 11 states have return successors, (22), 18 states have call predecessors, (22), 20 states have call successors, (22) [2021-11-25 19:46:18,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 249 transitions. [2021-11-25 19:46:18,316 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 249 transitions. Word has length 59 [2021-11-25 19:46:18,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:46:18,317 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 249 transitions. [2021-11-25 19:46:18,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.1875) internal successors, (67), 16 states have internal predecessors, (67), 4 states have call successors, (8), 3 states have call predecessors, (8), 5 states have return successors, (9), 2 states have call predecessors, (9), 4 states have call successors, (9) [2021-11-25 19:46:18,317 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 249 transitions. [2021-11-25 19:46:18,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-25 19:46:18,321 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:46:18,321 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:46:18,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-25 19:46:18,537 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-11-25 19:46:18,759 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-25 19:46:18,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:46:18,958 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:46:18,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:46:18,959 INFO L85 PathProgramCache]: Analyzing trace with hash -890874352, now seen corresponding path program 4 times [2021-11-25 19:46:18,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:46:18,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1494299475] [2021-11-25 19:46:18,959 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 19:46:18,959 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:46:18,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:46:18,960 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:46:18,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-25 19:46:19,147 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 19:46:19,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:46:19,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-25 19:46:19,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:46:19,783 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 14 proven. 24 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-25 19:46:19,784 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:46:20,348 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 23 proven. 11 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-25 19:46:20,349 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:46:20,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1494299475] [2021-11-25 19:46:20,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1494299475] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:46:20,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [976268362] [2021-11-25 19:46:20,349 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 19:46:20,350 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:46:20,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:46:20,366 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:46:20,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-11-25 19:46:20,596 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 19:46:20,597 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:46:20,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-25 19:46:20,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:46:21,195 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 18 proven. 20 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-25 19:46:21,195 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:46:21,496 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 25 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-25 19:46:21,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [976268362] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:46:21,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136364068] [2021-11-25 19:46:21,496 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 19:46:21,496 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:46:21,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:46:21,497 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:46:21,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-25 19:46:21,614 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 19:46:21,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:46:21,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-25 19:46:21,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:46:22,139 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-25 19:46:22,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:46:22,590 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-25 19:46:22,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136364068] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:46:22,591 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-25 19:46:22,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 11, 9, 9, 9] total 30 [2021-11-25 19:46:22,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070869632] [2021-11-25 19:46:22,591 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-25 19:46:22,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-11-25 19:46:22,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:46:22,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-11-25 19:46:22,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=647, Unknown=0, NotChecked=0, Total=870 [2021-11-25 19:46:22,594 INFO L87 Difference]: Start difference. First operand 195 states and 249 transitions. Second operand has 30 states, 30 states have (on average 4.033333333333333) internal successors, (121), 29 states have internal predecessors, (121), 5 states have call successors, (11), 4 states have call predecessors, (11), 7 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) [2021-11-25 19:46:25,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:46:25,915 INFO L93 Difference]: Finished difference Result 535 states and 686 transitions. [2021-11-25 19:46:25,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-11-25 19:46:25,916 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.033333333333333) internal successors, (121), 29 states have internal predecessors, (121), 5 states have call successors, (11), 4 states have call predecessors, (11), 7 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) Word has length 61 [2021-11-25 19:46:25,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:46:25,921 INFO L225 Difference]: With dead ends: 535 [2021-11-25 19:46:25,921 INFO L226 Difference]: Without dead ends: 501 [2021-11-25 19:46:25,922 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 332 SyntacticMatches, 8 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1169 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=789, Invalid=2181, Unknown=0, NotChecked=0, Total=2970 [2021-11-25 19:46:25,923 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 464 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 378 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:46:25,923 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [464 Valid, 397 Invalid, 782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 258 Invalid, 0 Unknown, 378 Unchecked, 1.4s Time] [2021-11-25 19:46:25,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2021-11-25 19:46:25,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 301. [2021-11-25 19:46:25,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 244 states have (on average 1.2745901639344261) internal successors, (311), 250 states have internal predecessors, (311), 35 states have call successors, (35), 21 states have call predecessors, (35), 21 states have return successors, (35), 29 states have call predecessors, (35), 35 states have call successors, (35) [2021-11-25 19:46:25,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 381 transitions. [2021-11-25 19:46:25,972 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 381 transitions. Word has length 61 [2021-11-25 19:46:25,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:46:25,972 INFO L470 AbstractCegarLoop]: Abstraction has 301 states and 381 transitions. [2021-11-25 19:46:25,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 4.033333333333333) internal successors, (121), 29 states have internal predecessors, (121), 5 states have call successors, (11), 4 states have call predecessors, (11), 7 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) [2021-11-25 19:46:25,973 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 381 transitions. [2021-11-25 19:46:25,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-25 19:46:25,977 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:46:25,977 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:46:25,999 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-25 19:46:26,197 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (18)] Ended with exit code 0 [2021-11-25 19:46:26,420 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2021-11-25 19:46:26,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:46:26,595 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:46:26,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:46:26,596 INFO L85 PathProgramCache]: Analyzing trace with hash -725408594, now seen corresponding path program 5 times [2021-11-25 19:46:26,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:46:26,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [889288997] [2021-11-25 19:46:26,596 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-25 19:46:26,597 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:46:26,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:46:26,598 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:46:26,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-25 19:46:27,126 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2021-11-25 19:46:27,126 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:46:27,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 51 conjunts are in the unsatisfiable core [2021-11-25 19:46:27,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:46:27,292 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-11-25 19:46:27,530 INFO L354 Elim1Store]: treesize reduction 58, result has 19.4 percent of original size [2021-11-25 19:46:27,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2021-11-25 19:46:28,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:46:28,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:46:28,291 INFO L354 Elim1Store]: treesize reduction 43, result has 17.3 percent of original size [2021-11-25 19:46:28,292 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 40 [2021-11-25 19:46:28,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:46:28,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:46:28,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:46:28,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:46:28,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:46:28,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:46:28,733 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:46:28,733 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2021-11-25 19:46:31,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:46:31,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:46:31,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:46:31,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:46:31,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:46:31,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:46:31,686 INFO L354 Elim1Store]: treesize reduction 292, result has 12.6 percent of original size [2021-11-25 19:46:31,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 81 treesize of output 73 [2021-11-25 19:46:33,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:46:33,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:46:33,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:46:33,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:46:33,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:46:33,930 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:46:33,930 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 17 [2021-11-25 19:46:34,265 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 8 proven. 50 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-25 19:46:34,265 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:48:36,764 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:48:36,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [889288997] [2021-11-25 19:48:36,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [889288997] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:48:36,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1835451885] [2021-11-25 19:48:36,765 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-25 19:48:36,765 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:48:36,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:48:36,767 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:48:36,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-11-25 19:48:37,101 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 19:48:37,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905498254] [2021-11-25 19:48:37,101 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-25 19:48:37,102 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:48:37,106 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 1 [2021-11-25 19:48:37,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:48:37,107 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:48:37,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-25 19:48:37,428 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2021-11-25 19:48:37,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:48:37,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 56 conjunts are in the unsatisfiable core [2021-11-25 19:48:37,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:48:46,815 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-11-25 19:48:49,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:48:49,325 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 35 [2021-11-25 19:48:56,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:48:56,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:48:56,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:48:56,425 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:48:56,426 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 40 [2021-11-25 19:48:58,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:48:58,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:48:58,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:48:58,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:48:58,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:48:58,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:48:58,223 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:48:58,224 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 51 [2021-11-25 19:49:02,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:02,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:02,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:02,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:02,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:02,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:03,037 INFO L354 Elim1Store]: treesize reduction 292, result has 12.6 percent of original size [2021-11-25 19:49:03,037 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 81 treesize of output 73 [2021-11-25 19:49:04,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:04,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:04,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:04,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:04,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:04,563 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:49:04,563 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 17 [2021-11-25 19:49:04,739 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 8 proven. 50 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-25 19:49:04,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:49:44,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905498254] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:49:44,813 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-25 19:49:44,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 35] total 48 [2021-11-25 19:49:44,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357980735] [2021-11-25 19:49:44,814 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-25 19:49:44,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-11-25 19:49:44,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:49:44,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-11-25 19:49:44,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=466, Invalid=3551, Unknown=15, NotChecked=0, Total=4032 [2021-11-25 19:49:44,817 INFO L87 Difference]: Start difference. First operand 301 states and 381 transitions. Second operand has 48 states, 47 states have (on average 1.553191489361702) internal successors, (73), 45 states have internal predecessors, (73), 4 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2021-11-25 19:49:53,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:49:53,723 INFO L93 Difference]: Finished difference Result 423 states and 534 transitions. [2021-11-25 19:49:53,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-25 19:49:53,724 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.553191489361702) internal successors, (73), 45 states have internal predecessors, (73), 4 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Word has length 63 [2021-11-25 19:49:53,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:49:53,727 INFO L225 Difference]: With dead ends: 423 [2021-11-25 19:49:53,728 INFO L226 Difference]: Without dead ends: 346 [2021-11-25 19:49:53,731 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 106 SyntacticMatches, 19 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2602 ImplicationChecksByTransitivity, 178.2s TimeCoverageRelationStatistics Valid=727, Invalid=4808, Unknown=15, NotChecked=0, Total=5550 [2021-11-25 19:49:53,732 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 52 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 453 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:49:53,732 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 342 Invalid, 793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 285 Invalid, 0 Unknown, 453 Unchecked, 1.3s Time] [2021-11-25 19:49:53,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2021-11-25 19:49:53,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 342. [2021-11-25 19:49:53,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 278 states have (on average 1.2553956834532374) internal successors, (349), 285 states have internal predecessors, (349), 39 states have call successors, (39), 24 states have call predecessors, (39), 24 states have return successors, (40), 32 states have call predecessors, (40), 39 states have call successors, (40) [2021-11-25 19:49:53,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 428 transitions. [2021-11-25 19:49:53,781 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 428 transitions. Word has length 63 [2021-11-25 19:49:53,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:49:53,782 INFO L470 AbstractCegarLoop]: Abstraction has 342 states and 428 transitions. [2021-11-25 19:49:53,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.553191489361702) internal successors, (73), 45 states have internal predecessors, (73), 4 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2021-11-25 19:49:53,782 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 428 transitions. [2021-11-25 19:49:53,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-25 19:49:53,784 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:49:53,785 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:49:53,801 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-25 19:49:54,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-11-25 19:49:54,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:49:54,200 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:49:54,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:49:54,201 INFO L85 PathProgramCache]: Analyzing trace with hash 236205423, now seen corresponding path program 1 times [2021-11-25 19:49:54,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:49:54,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1722166677] [2021-11-25 19:49:54,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:49:54,201 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:49:54,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:49:54,202 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:49:54,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-25 19:49:54,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:49:54,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 19:49:54,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:49:54,455 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-25 19:49:54,455 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:49:54,455 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:49:54,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1722166677] [2021-11-25 19:49:54,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1722166677] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:49:54,456 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:49:54,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:49:54,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204620018] [2021-11-25 19:49:54,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:49:54,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:49:54,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:49:54,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:49:54,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:49:54,457 INFO L87 Difference]: Start difference. First operand 342 states and 428 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-25 19:49:54,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:49:54,666 INFO L93 Difference]: Finished difference Result 616 states and 790 transitions. [2021-11-25 19:49:54,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:49:54,681 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 63 [2021-11-25 19:49:54,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:49:54,684 INFO L225 Difference]: With dead ends: 616 [2021-11-25 19:49:54,684 INFO L226 Difference]: Without dead ends: 408 [2021-11-25 19:49:54,685 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:49:54,686 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 6 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:49:54,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 191 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:49:54,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2021-11-25 19:49:54,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 370. [2021-11-25 19:49:54,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 298 states have (on average 1.238255033557047) internal successors, (369), 307 states have internal predecessors, (369), 39 states have call successors, (39), 24 states have call predecessors, (39), 32 states have return successors, (52), 38 states have call predecessors, (52), 39 states have call successors, (52) [2021-11-25 19:49:54,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 460 transitions. [2021-11-25 19:49:54,729 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 460 transitions. Word has length 63 [2021-11-25 19:49:54,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:49:54,729 INFO L470 AbstractCegarLoop]: Abstraction has 370 states and 460 transitions. [2021-11-25 19:49:54,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-25 19:49:54,730 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 460 transitions. [2021-11-25 19:49:54,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-25 19:49:54,733 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:49:54,733 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:49:54,749 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-25 19:49:54,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:49:54,949 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:49:54,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:49:54,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1429043906, now seen corresponding path program 1 times [2021-11-25 19:49:54,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:49:54,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1146681550] [2021-11-25 19:49:54,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:49:54,950 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:49:54,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:49:54,951 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:49:54,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-25 19:49:55,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:49:55,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 19:49:55,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:49:55,208 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2021-11-25 19:49:55,208 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:49:55,208 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:49:55,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1146681550] [2021-11-25 19:49:55,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1146681550] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:49:55,209 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:49:55,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:49:55,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242736794] [2021-11-25 19:49:55,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:49:55,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:49:55,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:49:55,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:49:55,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:49:55,210 INFO L87 Difference]: Start difference. First operand 370 states and 460 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-25 19:49:55,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:49:55,310 INFO L93 Difference]: Finished difference Result 622 states and 780 transitions. [2021-11-25 19:49:55,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:49:55,315 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 65 [2021-11-25 19:49:55,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:49:55,318 INFO L225 Difference]: With dead ends: 622 [2021-11-25 19:49:55,319 INFO L226 Difference]: Without dead ends: 386 [2021-11-25 19:49:55,319 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:49:55,320 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 5 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:49:55,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 164 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:49:55,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2021-11-25 19:49:55,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 374. [2021-11-25 19:49:55,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 302 states have (on average 1.195364238410596) internal successors, (361), 311 states have internal predecessors, (361), 39 states have call successors, (39), 24 states have call predecessors, (39), 32 states have return successors, (52), 38 states have call predecessors, (52), 39 states have call successors, (52) [2021-11-25 19:49:55,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 452 transitions. [2021-11-25 19:49:55,360 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 452 transitions. Word has length 65 [2021-11-25 19:49:55,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:49:55,360 INFO L470 AbstractCegarLoop]: Abstraction has 374 states and 452 transitions. [2021-11-25 19:49:55,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-25 19:49:55,361 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 452 transitions. [2021-11-25 19:49:55,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-25 19:49:55,362 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:49:55,363 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:49:55,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-11-25 19:49:55,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:49:55,573 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:49:55,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:49:55,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1496050659, now seen corresponding path program 1 times [2021-11-25 19:49:55,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:49:55,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1400649901] [2021-11-25 19:49:55,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:49:55,574 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:49:55,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:49:55,575 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:49:55,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-25 19:49:55,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:49:55,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-25 19:49:55,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:49:56,513 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 34 proven. 18 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-25 19:49:56,514 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:49:57,251 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 25 proven. 24 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-25 19:49:57,251 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:49:57,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1400649901] [2021-11-25 19:49:57,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1400649901] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:49:57,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [984188636] [2021-11-25 19:49:57,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:49:57,252 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:49:57,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:49:57,253 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:49:57,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2021-11-25 19:49:57,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:49:57,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-25 19:49:57,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:49:57,964 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 33 proven. 19 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-25 19:49:57,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:49:58,389 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 26 proven. 18 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-25 19:49:58,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [984188636] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:49:58,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599843136] [2021-11-25 19:49:58,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:49:58,390 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:49:58,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:49:58,391 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:49:58,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-11-25 19:49:58,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:49:58,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-25 19:49:58,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:49:59,088 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 41 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-25 19:49:59,088 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:49:59,658 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 23 proven. 18 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-25 19:49:59,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [599843136] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:49:59,658 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-25 19:49:59,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 12, 10, 8, 9] total 35 [2021-11-25 19:49:59,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822320161] [2021-11-25 19:49:59,659 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-25 19:49:59,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-11-25 19:49:59,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:49:59,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-11-25 19:49:59,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=263, Invalid=927, Unknown=0, NotChecked=0, Total=1190 [2021-11-25 19:49:59,661 INFO L87 Difference]: Start difference. First operand 374 states and 452 transitions. Second operand has 35 states, 35 states have (on average 2.942857142857143) internal successors, (103), 34 states have internal predecessors, (103), 3 states have call successors, (10), 3 states have call predecessors, (10), 6 states have return successors, (14), 6 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-25 19:50:04,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:50:04,220 INFO L93 Difference]: Finished difference Result 744 states and 933 transitions. [2021-11-25 19:50:04,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-11-25 19:50:04,222 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.942857142857143) internal successors, (103), 34 states have internal predecessors, (103), 3 states have call successors, (10), 3 states have call predecessors, (10), 6 states have return successors, (14), 6 states have call predecessors, (14), 3 states have call successors, (14) Word has length 65 [2021-11-25 19:50:04,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:50:04,227 INFO L225 Difference]: With dead ends: 744 [2021-11-25 19:50:04,227 INFO L226 Difference]: Without dead ends: 590 [2021-11-25 19:50:04,229 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 348 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1059 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=539, Invalid=2011, Unknown=0, NotChecked=0, Total=2550 [2021-11-25 19:50:04,230 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 105 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 143 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-25 19:50:04,230 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 393 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 332 Invalid, 0 Unknown, 143 Unchecked, 2.5s Time] [2021-11-25 19:50:04,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2021-11-25 19:50:04,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 376. [2021-11-25 19:50:04,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 304 states have (on average 1.180921052631579) internal successors, (359), 313 states have internal predecessors, (359), 39 states have call successors, (39), 24 states have call predecessors, (39), 32 states have return successors, (52), 38 states have call predecessors, (52), 39 states have call successors, (52) [2021-11-25 19:50:04,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 450 transitions. [2021-11-25 19:50:04,281 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 450 transitions. Word has length 65 [2021-11-25 19:50:04,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:50:04,281 INFO L470 AbstractCegarLoop]: Abstraction has 376 states and 450 transitions. [2021-11-25 19:50:04,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.942857142857143) internal successors, (103), 34 states have internal predecessors, (103), 3 states have call successors, (10), 3 states have call predecessors, (10), 6 states have return successors, (14), 6 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-25 19:50:04,282 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 450 transitions. [2021-11-25 19:50:04,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-25 19:50:04,284 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:50:04,284 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:50:04,300 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-11-25 19:50:04,525 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2021-11-25 19:50:04,703 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (26)] Ended with exit code 0 [2021-11-25 19:50:04,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt [2021-11-25 19:50:04,901 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:50:04,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:50:04,901 INFO L85 PathProgramCache]: Analyzing trace with hash 2080440812, now seen corresponding path program 6 times [2021-11-25 19:50:04,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:50:04,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2092358013] [2021-11-25 19:50:04,902 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-25 19:50:04,902 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:50:04,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:50:04,903 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:50:04,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-11-25 19:50:05,265 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-11-25 19:50:05,265 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:50:05,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-25 19:50:05,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:50:06,437 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 23 proven. 32 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-25 19:50:06,437 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:50:07,156 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 28 proven. 19 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-25 19:50:07,156 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:50:07,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2092358013] [2021-11-25 19:50:07,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2092358013] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:50:07,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [411505951] [2021-11-25 19:50:07,156 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-25 19:50:07,157 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:50:07,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:50:07,158 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:50:07,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2021-11-25 19:50:07,635 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-11-25 19:50:07,635 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:50:07,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-25 19:50:07,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:50:08,319 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 8 proven. 48 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-25 19:50:08,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:50:08,556 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 28 proven. 19 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-25 19:50:08,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [411505951] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:50:08,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381164180] [2021-11-25 19:50:08,557 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-25 19:50:08,557 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:50:08,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:50:08,558 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:50:08,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-11-25 19:50:08,868 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-11-25 19:50:08,869 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:50:08,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-25 19:50:08,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:50:10,022 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 21 proven. 22 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-25 19:50:10,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:50:10,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [381164180] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:50:10,433 INFO L186 FreeRefinementEngine]: Found 0 perfect and 5 imperfect interpolant sequences. [2021-11-25 19:50:10,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 12, 10, 15] total 32 [2021-11-25 19:50:10,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726655463] [2021-11-25 19:50:10,434 INFO L85 oduleStraightlineAll]: Using 5 imperfect interpolants to construct interpolant automaton [2021-11-25 19:50:10,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-25 19:50:10,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:50:10,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-25 19:50:10,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=974, Unknown=0, NotChecked=0, Total=1190 [2021-11-25 19:50:10,436 INFO L87 Difference]: Start difference. First operand 376 states and 450 transitions. Second operand has 32 states, 32 states have (on average 4.25) internal successors, (136), 32 states have internal predecessors, (136), 5 states have call successors, (11), 4 states have call predecessors, (11), 5 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2021-11-25 19:50:13,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:50:13,145 INFO L93 Difference]: Finished difference Result 675 states and 818 transitions. [2021-11-25 19:50:13,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-25 19:50:13,157 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.25) internal successors, (136), 32 states have internal predecessors, (136), 5 states have call successors, (11), 4 states have call predecessors, (11), 5 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) Word has length 65 [2021-11-25 19:50:13,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:50:13,164 INFO L225 Difference]: With dead ends: 675 [2021-11-25 19:50:13,165 INFO L226 Difference]: Without dead ends: 490 [2021-11-25 19:50:13,167 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 314 SyntacticMatches, 5 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 713 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=387, Invalid=1683, Unknown=0, NotChecked=0, Total=2070 [2021-11-25 19:50:13,169 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 121 mSDsluCounter, 717 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 558 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:50:13,170 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 772 Invalid, 818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 233 Invalid, 0 Unknown, 558 Unchecked, 1.4s Time] [2021-11-25 19:50:13,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2021-11-25 19:50:13,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 420. [2021-11-25 19:50:13,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 341 states have (on average 1.1730205278592376) internal successors, (400), 351 states have internal predecessors, (400), 43 states have call successors, (43), 27 states have call predecessors, (43), 35 states have return successors, (57), 41 states have call predecessors, (57), 43 states have call successors, (57) [2021-11-25 19:50:13,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 500 transitions. [2021-11-25 19:50:13,221 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 500 transitions. Word has length 65 [2021-11-25 19:50:13,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:50:13,223 INFO L470 AbstractCegarLoop]: Abstraction has 420 states and 500 transitions. [2021-11-25 19:50:13,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.25) internal successors, (136), 32 states have internal predecessors, (136), 5 states have call successors, (11), 4 states have call predecessors, (11), 5 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2021-11-25 19:50:13,223 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 500 transitions. [2021-11-25 19:50:13,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-25 19:50:13,225 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:50:13,226 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:50:13,233 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (29)] Forceful destruction successful, exit code 0 [2021-11-25 19:50:13,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-11-25 19:50:13,654 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-11-25 19:50:13,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:50:13,830 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:50:13,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:50:13,830 INFO L85 PathProgramCache]: Analyzing trace with hash 785313200, now seen corresponding path program 7 times [2021-11-25 19:50:13,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:50:13,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [320694745] [2021-11-25 19:50:13,831 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-25 19:50:13,831 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:50:13,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:50:13,831 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:50:13,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-11-25 19:50:14,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:50:14,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-25 19:50:14,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:50:14,885 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 17 proven. 26 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-25 19:50:14,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:50:15,683 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 10 proven. 25 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-11-25 19:50:15,684 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:50:15,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [320694745] [2021-11-25 19:50:15,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [320694745] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:50:15,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [222520331] [2021-11-25 19:50:15,684 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-25 19:50:15,685 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:50:15,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:50:15,685 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:50:15,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process [2021-11-25 19:50:15,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:50:15,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-25 19:50:15,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:50:16,521 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 16 proven. 27 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-25 19:50:16,522 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:50:17,185 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 10 proven. 25 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-11-25 19:50:17,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [222520331] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:50:17,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113254802] [2021-11-25 19:50:17,185 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-25 19:50:17,186 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:50:17,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:50:17,186 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:50:17,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-11-25 19:50:17,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:50:17,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-25 19:50:17,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:50:18,783 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 11 proven. 32 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-25 19:50:18,784 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:50:20,933 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 2 proven. 33 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-11-25 19:50:20,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2113254802] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:50:20,933 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-25 19:50:20,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 14, 12, 17, 14] total 52 [2021-11-25 19:50:20,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479699714] [2021-11-25 19:50:20,934 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-25 19:50:20,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2021-11-25 19:50:20,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:50:20,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-11-25 19:50:20,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=592, Invalid=2060, Unknown=0, NotChecked=0, Total=2652 [2021-11-25 19:50:20,937 INFO L87 Difference]: Start difference. First operand 420 states and 500 transitions. Second operand has 52 states, 52 states have (on average 2.173076923076923) internal successors, (113), 52 states have internal predecessors, (113), 3 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-25 19:50:47,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:50:47,033 INFO L93 Difference]: Finished difference Result 1133 states and 1384 transitions. [2021-11-25 19:50:47,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-11-25 19:50:47,049 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.173076923076923) internal successors, (113), 52 states have internal predecessors, (113), 3 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) Word has length 65 [2021-11-25 19:50:47,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:50:47,054 INFO L225 Difference]: With dead ends: 1133 [2021-11-25 19:50:47,055 INFO L226 Difference]: Without dead ends: 855 [2021-11-25 19:50:47,060 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 330 SyntacticMatches, 6 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5073 ImplicationChecksByTransitivity, 24.9s TimeCoverageRelationStatistics Valid=2405, Invalid=10251, Unknown=0, NotChecked=0, Total=12656 [2021-11-25 19:50:47,061 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 217 mSDsluCounter, 641 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 704 SdHoareTripleChecker+Invalid, 1210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 363 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:50:47,061 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [219 Valid, 704 Invalid, 1210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 691 Invalid, 0 Unknown, 363 Unchecked, 5.4s Time] [2021-11-25 19:50:47,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2021-11-25 19:50:47,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 674. [2021-11-25 19:50:47,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 674 states, 555 states have (on average 1.2036036036036035) internal successors, (668), 572 states have internal predecessors, (668), 69 states have call successors, (69), 35 states have call predecessors, (69), 49 states have return successors, (92), 66 states have call predecessors, (92), 69 states have call successors, (92) [2021-11-25 19:50:47,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 829 transitions. [2021-11-25 19:50:47,147 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 829 transitions. Word has length 65 [2021-11-25 19:50:47,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:50:47,148 INFO L470 AbstractCegarLoop]: Abstraction has 674 states and 829 transitions. [2021-11-25 19:50:47,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 2.173076923076923) internal successors, (113), 52 states have internal predecessors, (113), 3 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-25 19:50:47,149 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 829 transitions. [2021-11-25 19:50:47,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-25 19:50:47,151 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:50:47,152 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:50:47,160 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (32)] Forceful destruction successful, exit code 0 [2021-11-25 19:50:47,364 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (31)] Ended with exit code 0 [2021-11-25 19:50:47,580 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2021-11-25 19:50:47,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:50:47,755 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:50:47,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:50:47,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1276732650, now seen corresponding path program 2 times [2021-11-25 19:50:47,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:50:47,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [807373918] [2021-11-25 19:50:47,756 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-25 19:50:47,756 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:50:47,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:50:47,758 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:50:47,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-11-25 19:50:48,028 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-25 19:50:48,029 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:50:48,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-25 19:50:48,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:50:49,974 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 6 proven. 26 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-25 19:50:49,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:50:51,175 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 3 proven. 23 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-25 19:50:51,175 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:50:51,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [807373918] [2021-11-25 19:50:51,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [807373918] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:50:51,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [75122789] [2021-11-25 19:50:51,175 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-25 19:50:51,175 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:50:51,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:50:51,176 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:50:51,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (35)] Waiting until timeout for monitored process [2021-11-25 19:50:51,545 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-25 19:50:51,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:50:51,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-25 19:50:51,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:50:53,189 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 12 proven. 22 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-25 19:50:53,189 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:50:53,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [75122789] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:50:53,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683863574] [2021-11-25 19:50:53,878 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-25 19:50:53,878 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:50:53,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:50:53,879 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:50:53,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-11-25 19:50:54,031 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-25 19:50:54,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:50:54,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-25 19:50:54,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:50:54,966 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 11 proven. 23 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-25 19:50:54,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:50:55,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1683863574] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:50:55,435 INFO L186 FreeRefinementEngine]: Found 0 perfect and 4 imperfect interpolant sequences. [2021-11-25 19:50:55,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 14, 15] total 36 [2021-11-25 19:50:55,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372126743] [2021-11-25 19:50:55,435 INFO L85 oduleStraightlineAll]: Using 4 imperfect interpolants to construct interpolant automaton [2021-11-25 19:50:55,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-11-25 19:50:55,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:50:55,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-11-25 19:50:55,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=1578, Unknown=0, NotChecked=0, Total=1806 [2021-11-25 19:50:55,438 INFO L87 Difference]: Start difference. First operand 674 states and 829 transitions. Second operand has 36 states, 33 states have (on average 3.9696969696969697) internal successors, (131), 33 states have internal predecessors, (131), 10 states have call successors, (14), 6 states have call predecessors, (14), 13 states have return successors, (15), 9 states have call predecessors, (15), 10 states have call successors, (15) [2021-11-25 19:50:57,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:50:57,857 INFO L93 Difference]: Finished difference Result 1442 states and 1799 transitions. [2021-11-25 19:50:57,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-11-25 19:50:57,858 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 33 states have (on average 3.9696969696969697) internal successors, (131), 33 states have internal predecessors, (131), 10 states have call successors, (14), 6 states have call predecessors, (14), 13 states have return successors, (15), 9 states have call predecessors, (15), 10 states have call successors, (15) Word has length 69 [2021-11-25 19:50:57,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:50:57,865 INFO L225 Difference]: With dead ends: 1442 [2021-11-25 19:50:57,866 INFO L226 Difference]: Without dead ends: 1262 [2021-11-25 19:50:57,868 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 290 SyntacticMatches, 10 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1179 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=351, Invalid=2729, Unknown=0, NotChecked=0, Total=3080 [2021-11-25 19:50:57,868 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 155 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 369 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:50:57,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 554 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 210 Invalid, 0 Unknown, 369 Unchecked, 1.2s Time] [2021-11-25 19:50:57,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1262 states. [2021-11-25 19:50:57,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1262 to 886. [2021-11-25 19:50:57,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 886 states, 700 states have (on average 1.2057142857142857) internal successors, (844), 725 states have internal predecessors, (844), 103 states have call successors, (103), 60 states have call predecessors, (103), 82 states have return successors, (138), 100 states have call predecessors, (138), 103 states have call successors, (138) [2021-11-25 19:50:58,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 886 states to 886 states and 1085 transitions. [2021-11-25 19:50:58,009 INFO L78 Accepts]: Start accepts. Automaton has 886 states and 1085 transitions. Word has length 69 [2021-11-25 19:50:58,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:50:58,009 INFO L470 AbstractCegarLoop]: Abstraction has 886 states and 1085 transitions. [2021-11-25 19:50:58,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 33 states have (on average 3.9696969696969697) internal successors, (131), 33 states have internal predecessors, (131), 10 states have call successors, (14), 6 states have call predecessors, (14), 13 states have return successors, (15), 9 states have call predecessors, (15), 10 states have call successors, (15) [2021-11-25 19:50:58,009 INFO L276 IsEmpty]: Start isEmpty. Operand 886 states and 1085 transitions. [2021-11-25 19:50:58,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-25 19:50:58,013 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:50:58,013 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:50:58,020 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (35)] Ended with exit code 0 [2021-11-25 19:50:58,226 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-11-25 19:50:58,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2021-11-25 19:50:58,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:50:58,617 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:50:58,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:50:58,617 INFO L85 PathProgramCache]: Analyzing trace with hash -502339621, now seen corresponding path program 8 times [2021-11-25 19:50:58,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:50:58,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [890846447] [2021-11-25 19:50:58,618 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-25 19:50:58,618 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:50:58,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:50:58,619 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:50:58,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-11-25 19:50:58,891 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-25 19:50:58,892 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:50:58,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-25 19:50:58,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:50:59,840 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 45 proven. 40 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-25 19:50:59,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:51:00,920 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 15 proven. 62 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-25 19:51:00,920 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:51:00,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [890846447] [2021-11-25 19:51:00,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [890846447] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:51:00,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [764954239] [2021-11-25 19:51:00,920 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-25 19:51:00,920 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:51:00,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:51:00,921 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:51:00,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (38)] Waiting until timeout for monitored process [2021-11-25 19:51:01,273 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-25 19:51:01,273 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:51:01,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-25 19:51:01,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:51:02,015 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 49 proven. 36 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-25 19:51:02,015 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:51:02,958 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 56 proven. 21 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-25 19:51:02,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [764954239] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:51:02,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4323330] [2021-11-25 19:51:02,958 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-25 19:51:02,958 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:51:02,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:51:02,960 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:51:02,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2021-11-25 19:51:03,181 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-25 19:51:03,182 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:51:03,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-25 19:51:03,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:51:03,735 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 45 proven. 40 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-25 19:51:03,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:51:04,431 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 15 proven. 62 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-25 19:51:04,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [4323330] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:51:04,432 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-25 19:51:04,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 12, 10, 13, 12] total 34 [2021-11-25 19:51:04,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079752280] [2021-11-25 19:51:04,432 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-25 19:51:04,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-25 19:51:04,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:51:04,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-25 19:51:04,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=928, Unknown=0, NotChecked=0, Total=1122 [2021-11-25 19:51:04,434 INFO L87 Difference]: Start difference. First operand 886 states and 1085 transitions. Second operand has 34 states, 34 states have (on average 3.911764705882353) internal successors, (133), 34 states have internal predecessors, (133), 5 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2021-11-25 19:51:09,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:51:09,010 INFO L93 Difference]: Finished difference Result 1475 states and 1829 transitions. [2021-11-25 19:51:09,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-11-25 19:51:09,011 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.911764705882353) internal successors, (133), 34 states have internal predecessors, (133), 5 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) Word has length 72 [2021-11-25 19:51:09,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:51:09,017 INFO L225 Difference]: With dead ends: 1475 [2021-11-25 19:51:09,017 INFO L226 Difference]: Without dead ends: 1334 [2021-11-25 19:51:09,019 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 399 SyntacticMatches, 3 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 997 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=616, Invalid=2690, Unknown=0, NotChecked=0, Total=3306 [2021-11-25 19:51:09,020 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 355 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 1047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 479 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:51:09,021 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [359 Valid, 512 Invalid, 1047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 444 Invalid, 0 Unknown, 479 Unchecked, 2.1s Time] [2021-11-25 19:51:09,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1334 states. [2021-11-25 19:51:09,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1334 to 1126. [2021-11-25 19:51:09,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1126 states, 881 states have (on average 1.2009080590238366) internal successors, (1058), 912 states have internal predecessors, (1058), 136 states have call successors, (136), 80 states have call predecessors, (136), 108 states have return successors, (180), 133 states have call predecessors, (180), 136 states have call successors, (180) [2021-11-25 19:51:09,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1126 states to 1126 states and 1374 transitions. [2021-11-25 19:51:09,155 INFO L78 Accepts]: Start accepts. Automaton has 1126 states and 1374 transitions. Word has length 72 [2021-11-25 19:51:09,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:51:09,155 INFO L470 AbstractCegarLoop]: Abstraction has 1126 states and 1374 transitions. [2021-11-25 19:51:09,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.911764705882353) internal successors, (133), 34 states have internal predecessors, (133), 5 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2021-11-25 19:51:09,155 INFO L276 IsEmpty]: Start isEmpty. Operand 1126 states and 1374 transitions. [2021-11-25 19:51:09,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-25 19:51:09,159 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:51:09,159 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:51:09,171 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (38)] Forceful destruction successful, exit code 0 [2021-11-25 19:51:09,409 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2021-11-25 19:51:09,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2021-11-25 19:51:09,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:51:09,774 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:51:09,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:51:09,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1302551650, now seen corresponding path program 1 times [2021-11-25 19:51:09,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:51:09,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [643420583] [2021-11-25 19:51:09,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:51:09,775 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:51:09,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:51:09,776 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:51:09,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2021-11-25 19:51:09,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:51:09,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 19:51:09,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:51:10,064 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2021-11-25 19:51:10,065 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:51:10,065 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:51:10,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [643420583] [2021-11-25 19:51:10,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [643420583] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:51:10,065 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:51:10,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:51:10,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751771931] [2021-11-25 19:51:10,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:51:10,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:51:10,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:51:10,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:51:10,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:51:10,067 INFO L87 Difference]: Start difference. First operand 1126 states and 1374 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-25 19:51:10,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:51:10,248 INFO L93 Difference]: Finished difference Result 1609 states and 1991 transitions. [2021-11-25 19:51:10,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:51:10,251 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 73 [2021-11-25 19:51:10,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:51:10,257 INFO L225 Difference]: With dead ends: 1609 [2021-11-25 19:51:10,258 INFO L226 Difference]: Without dead ends: 1182 [2021-11-25 19:51:10,259 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:51:10,260 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 1 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:51:10,260 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 183 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:51:10,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1182 states. [2021-11-25 19:51:10,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1182 to 1158. [2021-11-25 19:51:10,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1158 states, 907 states have (on average 1.195148842337376) internal successors, (1084), 934 states have internal predecessors, (1084), 136 states have call successors, (136), 80 states have call predecessors, (136), 114 states have return successors, (186), 143 states have call predecessors, (186), 136 states have call successors, (186) [2021-11-25 19:51:10,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1158 states to 1158 states and 1406 transitions. [2021-11-25 19:51:10,383 INFO L78 Accepts]: Start accepts. Automaton has 1158 states and 1406 transitions. Word has length 73 [2021-11-25 19:51:10,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:51:10,384 INFO L470 AbstractCegarLoop]: Abstraction has 1158 states and 1406 transitions. [2021-11-25 19:51:10,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-25 19:51:10,385 INFO L276 IsEmpty]: Start isEmpty. Operand 1158 states and 1406 transitions. [2021-11-25 19:51:10,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-25 19:51:10,388 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:51:10,388 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:51:10,403 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2021-11-25 19:51:10,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:51:10,602 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:51:10,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:51:10,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1889357664, now seen corresponding path program 1 times [2021-11-25 19:51:10,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:51:10,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1627544106] [2021-11-25 19:51:10,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:51:10,603 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:51:10,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:51:10,604 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:51:10,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2021-11-25 19:51:10,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:51:10,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-25 19:51:10,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:51:11,751 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 6 proven. 66 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-25 19:51:11,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:51:12,521 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 51 proven. 16 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-25 19:51:12,521 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:51:12,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1627544106] [2021-11-25 19:51:12,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1627544106] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:51:12,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1213930287] [2021-11-25 19:51:12,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:51:12,521 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:51:12,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:51:12,523 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:51:12,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (42)] Waiting until timeout for monitored process [2021-11-25 19:51:12,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:51:12,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-25 19:51:12,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:51:13,516 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 9 proven. 63 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-25 19:51:13,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:51:13,959 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 54 proven. 10 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-11-25 19:51:13,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1213930287] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:51:13,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906706627] [2021-11-25 19:51:13,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:51:13,959 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:51:13,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:51:13,960 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:51:13,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2021-11-25 19:51:14,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:51:14,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-25 19:51:14,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:51:14,926 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2021-11-25 19:51:14,926 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:51:16,151 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2021-11-25 19:51:16,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906706627] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:51:16,152 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-25 19:51:16,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 12, 10, 9, 12] total 39 [2021-11-25 19:51:16,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842091717] [2021-11-25 19:51:16,152 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-25 19:51:16,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-11-25 19:51:16,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:51:16,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-11-25 19:51:16,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=341, Invalid=1141, Unknown=0, NotChecked=0, Total=1482 [2021-11-25 19:51:16,154 INFO L87 Difference]: Start difference. First operand 1158 states and 1406 transitions. Second operand has 39 states, 39 states have (on average 3.358974358974359) internal successors, (131), 38 states have internal predecessors, (131), 5 states have call successors, (14), 4 states have call predecessors, (14), 7 states have return successors, (17), 6 states have call predecessors, (17), 5 states have call successors, (17) [2021-11-25 19:51:18,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:51:18,474 INFO L93 Difference]: Finished difference Result 1941 states and 2400 transitions. [2021-11-25 19:51:18,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-11-25 19:51:18,475 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.358974358974359) internal successors, (131), 38 states have internal predecessors, (131), 5 states have call successors, (14), 4 states have call predecessors, (14), 7 states have return successors, (17), 6 states have call predecessors, (17), 5 states have call successors, (17) Word has length 73 [2021-11-25 19:51:18,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:51:18,485 INFO L225 Difference]: With dead ends: 1941 [2021-11-25 19:51:18,486 INFO L226 Difference]: Without dead ends: 1839 [2021-11-25 19:51:18,488 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 399 SyntacticMatches, 9 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1129 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=881, Invalid=2659, Unknown=0, NotChecked=0, Total=3540 [2021-11-25 19:51:18,488 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 441 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 1045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 646 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-25 19:51:18,489 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [443 Valid, 401 Invalid, 1045 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 191 Invalid, 0 Unknown, 646 Unchecked, 0.9s Time] [2021-11-25 19:51:18,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1839 states. [2021-11-25 19:51:18,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1839 to 1513. [2021-11-25 19:51:18,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1513 states, 1147 states have (on average 1.1778552746294682) internal successors, (1351), 1168 states have internal predecessors, (1351), 208 states have call successors, (208), 127 states have call predecessors, (208), 157 states have return successors, (286), 217 states have call predecessors, (286), 208 states have call successors, (286) [2021-11-25 19:51:18,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1513 states to 1513 states and 1845 transitions. [2021-11-25 19:51:18,662 INFO L78 Accepts]: Start accepts. Automaton has 1513 states and 1845 transitions. Word has length 73 [2021-11-25 19:51:18,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:51:18,662 INFO L470 AbstractCegarLoop]: Abstraction has 1513 states and 1845 transitions. [2021-11-25 19:51:18,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.358974358974359) internal successors, (131), 38 states have internal predecessors, (131), 5 states have call successors, (14), 4 states have call predecessors, (14), 7 states have return successors, (17), 6 states have call predecessors, (17), 5 states have call successors, (17) [2021-11-25 19:51:18,663 INFO L276 IsEmpty]: Start isEmpty. Operand 1513 states and 1845 transitions. [2021-11-25 19:51:18,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-25 19:51:18,667 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:51:18,667 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:51:18,713 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2021-11-25 19:51:18,904 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2021-11-25 19:51:19,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (42)] Forceful destruction successful, exit code 0 [2021-11-25 19:51:19,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt [2021-11-25 19:51:19,287 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:51:19,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:51:19,287 INFO L85 PathProgramCache]: Analyzing trace with hash 956374200, now seen corresponding path program 9 times [2021-11-25 19:51:19,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:51:19,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2060696718] [2021-11-25 19:51:19,288 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 19:51:19,288 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:51:19,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:51:19,289 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:51:19,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2021-11-25 19:51:19,871 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-11-25 19:51:19,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:51:19,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-25 19:51:19,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:51:21,049 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 10 proven. 62 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-11-25 19:51:21,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:51:21,472 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:51:21,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2060696718] [2021-11-25 19:51:21,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2060696718] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:51:21,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [118734546] [2021-11-25 19:51:21,473 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 19:51:21,473 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:51:21,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:51:21,474 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:51:21,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (45)] Waiting until timeout for monitored process [2021-11-25 19:51:22,204 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-11-25 19:51:22,204 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:51:22,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-25 19:51:22,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:51:23,036 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 25 proven. 46 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2021-11-25 19:51:23,037 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:51:24,164 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 55 proven. 8 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-11-25 19:51:24,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [118734546] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:51:24,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697624940] [2021-11-25 19:51:24,164 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 19:51:24,164 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:51:24,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:51:24,165 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:51:24,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2021-11-25 19:51:24,591 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-11-25 19:51:24,592 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:51:24,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-25 19:51:24,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:51:25,001 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 42 proven. 41 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-11-25 19:51:25,001 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:51:25,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1697624940] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:51:25,380 INFO L186 FreeRefinementEngine]: Found 0 perfect and 4 imperfect interpolant sequences. [2021-11-25 19:51:25,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 11, 13] total 30 [2021-11-25 19:51:25,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864970237] [2021-11-25 19:51:25,381 INFO L85 oduleStraightlineAll]: Using 4 imperfect interpolants to construct interpolant automaton [2021-11-25 19:51:25,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-11-25 19:51:25,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:51:25,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-11-25 19:51:25,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=1152, Unknown=0, NotChecked=0, Total=1406 [2021-11-25 19:51:25,383 INFO L87 Difference]: Start difference. First operand 1513 states and 1845 transitions. Second operand has 30 states, 30 states have (on average 4.133333333333334) internal successors, (124), 30 states have internal predecessors, (124), 5 states have call successors, (11), 4 states have call predecessors, (11), 6 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) [2021-11-25 19:51:26,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:51:26,610 INFO L93 Difference]: Finished difference Result 1752 states and 2138 transitions. [2021-11-25 19:51:26,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-25 19:51:26,612 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.133333333333334) internal successors, (124), 30 states have internal predecessors, (124), 5 states have call successors, (11), 4 states have call predecessors, (11), 6 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) Word has length 73 [2021-11-25 19:51:26,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:51:26,619 INFO L225 Difference]: With dead ends: 1752 [2021-11-25 19:51:26,620 INFO L226 Difference]: Without dead ends: 1297 [2021-11-25 19:51:26,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 306 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 642 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=385, Invalid=1595, Unknown=0, NotChecked=0, Total=1980 [2021-11-25 19:51:26,622 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 113 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 238 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 19:51:26,623 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 389 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 120 Invalid, 0 Unknown, 238 Unchecked, 0.6s Time] [2021-11-25 19:51:26,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1297 states. [2021-11-25 19:51:26,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1297 to 1185. [2021-11-25 19:51:26,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1185 states, 917 states have (on average 1.1744820065430752) internal successors, (1077), 931 states have internal predecessors, (1077), 155 states have call successors, (155), 90 states have call predecessors, (155), 112 states have return successors, (215), 163 states have call predecessors, (215), 155 states have call successors, (215) [2021-11-25 19:51:26,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1185 states to 1185 states and 1447 transitions. [2021-11-25 19:51:26,783 INFO L78 Accepts]: Start accepts. Automaton has 1185 states and 1447 transitions. Word has length 73 [2021-11-25 19:51:26,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:51:26,783 INFO L470 AbstractCegarLoop]: Abstraction has 1185 states and 1447 transitions. [2021-11-25 19:51:26,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 4.133333333333334) internal successors, (124), 30 states have internal predecessors, (124), 5 states have call successors, (11), 4 states have call predecessors, (11), 6 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) [2021-11-25 19:51:26,784 INFO L276 IsEmpty]: Start isEmpty. Operand 1185 states and 1447 transitions. [2021-11-25 19:51:26,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-25 19:51:26,788 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:51:26,788 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:51:26,836 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2021-11-25 19:51:27,012 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2021-11-25 19:51:27,205 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (45)] Forceful destruction successful, exit code 0 [2021-11-25 19:51:27,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt [2021-11-25 19:51:27,402 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:51:27,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:51:27,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1826181294, now seen corresponding path program 10 times [2021-11-25 19:51:27,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:51:27,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [3683755] [2021-11-25 19:51:27,403 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 19:51:27,403 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:51:27,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:51:27,404 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:51:27,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2021-11-25 19:51:27,664 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 19:51:27,665 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:51:27,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-25 19:51:27,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:51:28,416 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 70 proven. 21 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-11-25 19:51:28,416 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:51:29,092 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 62 proven. 21 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-25 19:51:29,092 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:51:29,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [3683755] [2021-11-25 19:51:29,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [3683755] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:51:29,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1000626038] [2021-11-25 19:51:29,093 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 19:51:29,093 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:51:29,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:51:29,116 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:51:29,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (48)] Waiting until timeout for monitored process [2021-11-25 19:51:29,404 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 19:51:29,404 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:51:29,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-25 19:51:29,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:51:29,959 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 70 proven. 21 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-11-25 19:51:29,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:51:30,562 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 64 proven. 19 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-25 19:51:30,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1000626038] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:51:30,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427322313] [2021-11-25 19:51:30,562 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 19:51:30,562 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:51:30,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:51:30,563 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:51:30,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2021-11-25 19:51:30,730 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 19:51:30,731 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:51:30,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-25 19:51:30,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:51:31,192 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 70 proven. 21 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-11-25 19:51:31,192 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:51:31,569 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 64 proven. 19 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-25 19:51:31,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [427322313] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:51:31,570 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-25 19:51:31,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 11, 10, 13, 9] total 27 [2021-11-25 19:51:31,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324505675] [2021-11-25 19:51:31,570 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-25 19:51:31,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-25 19:51:31,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:51:31,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-25 19:51:31,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=533, Unknown=0, NotChecked=0, Total=702 [2021-11-25 19:51:31,572 INFO L87 Difference]: Start difference. First operand 1185 states and 1447 transitions. Second operand has 27 states, 27 states have (on average 3.074074074074074) internal successors, (83), 26 states have internal predecessors, (83), 3 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-25 19:51:34,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:51:34,594 INFO L93 Difference]: Finished difference Result 1222 states and 1487 transitions. [2021-11-25 19:51:34,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-25 19:51:34,595 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.074074074074074) internal successors, (83), 26 states have internal predecessors, (83), 3 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) Word has length 77 [2021-11-25 19:51:34,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:51:34,601 INFO L225 Difference]: With dead ends: 1222 [2021-11-25 19:51:34,601 INFO L226 Difference]: Without dead ends: 839 [2021-11-25 19:51:34,602 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 464 GetRequests, 428 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 372 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=272, Invalid=918, Unknown=0, NotChecked=0, Total=1190 [2021-11-25 19:51:34,603 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 76 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 162 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-25 19:51:34,603 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 226 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 241 Invalid, 0 Unknown, 162 Unchecked, 1.8s Time] [2021-11-25 19:51:34,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states. [2021-11-25 19:51:34,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 830. [2021-11-25 19:51:34,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 651 states have (on average 1.1843317972350231) internal successors, (771), 662 states have internal predecessors, (771), 99 states have call successors, (99), 62 states have call predecessors, (99), 79 states have return successors, (141), 105 states have call predecessors, (141), 99 states have call successors, (141) [2021-11-25 19:51:34,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 1011 transitions. [2021-11-25 19:51:34,733 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 1011 transitions. Word has length 77 [2021-11-25 19:51:34,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:51:34,733 INFO L470 AbstractCegarLoop]: Abstraction has 830 states and 1011 transitions. [2021-11-25 19:51:34,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.074074074074074) internal successors, (83), 26 states have internal predecessors, (83), 3 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-25 19:51:34,733 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 1011 transitions. [2021-11-25 19:51:34,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-25 19:51:34,737 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:51:34,737 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 7, 7, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:51:34,784 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2021-11-25 19:51:34,976 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2021-11-25 19:51:35,160 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (48)] Ended with exit code 0 [2021-11-25 19:51:35,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt [2021-11-25 19:51:35,358 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:51:35,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:51:35,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1730369625, now seen corresponding path program 11 times [2021-11-25 19:51:35,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:51:35,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [227399411] [2021-11-25 19:51:35,359 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-25 19:51:35,359 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:51:35,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:51:35,361 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:51:35,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2021-11-25 19:51:35,684 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-11-25 19:51:35,684 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:51:35,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-25 19:51:35,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:51:36,430 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 92 proven. 59 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-25 19:51:36,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:51:37,671 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 67 proven. 76 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-25 19:51:37,672 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:51:37,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [227399411] [2021-11-25 19:51:37,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [227399411] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:51:37,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1032238648] [2021-11-25 19:51:37,672 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-25 19:51:37,672 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:51:37,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:51:37,673 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:51:37,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (51)] Waiting until timeout for monitored process [2021-11-25 19:51:45,229 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-11-25 19:51:45,229 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:51:45,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-25 19:51:45,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:51:46,383 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 99 proven. 52 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-25 19:51:46,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:51:47,287 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 69 proven. 76 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-11-25 19:51:47,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1032238648] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:51:47,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95335858] [2021-11-25 19:51:47,288 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-25 19:51:47,288 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:51:47,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:51:47,294 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:51:47,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2021-11-25 19:51:48,173 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-11-25 19:51:48,173 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:51:48,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-25 19:51:48,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:51:48,443 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 19 proven. 50 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-11-25 19:51:48,443 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:51:49,251 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 58 proven. 89 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-11-25 19:51:49,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95335858] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:51:49,252 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-25 19:51:49,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 12, 13, 13, 17] total 43 [2021-11-25 19:51:49,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488086511] [2021-11-25 19:51:49,253 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-25 19:51:49,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2021-11-25 19:51:49,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:51:49,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-11-25 19:51:49,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=1398, Unknown=0, NotChecked=0, Total=1806 [2021-11-25 19:51:49,255 INFO L87 Difference]: Start difference. First operand 830 states and 1011 transitions. Second operand has 43 states, 43 states have (on average 4.5813953488372094) internal successors, (197), 43 states have internal predecessors, (197), 6 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2021-11-25 19:51:58,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:51:58,684 INFO L93 Difference]: Finished difference Result 2272 states and 2836 transitions. [2021-11-25 19:51:58,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-11-25 19:51:58,699 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 4.5813953488372094) internal successors, (197), 43 states have internal predecessors, (197), 6 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) Word has length 82 [2021-11-25 19:51:58,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:51:58,709 INFO L225 Difference]: With dead ends: 2272 [2021-11-25 19:51:58,710 INFO L226 Difference]: Without dead ends: 1665 [2021-11-25 19:51:58,713 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 550 GetRequests, 444 SyntacticMatches, 8 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3419 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=1978, Invalid=7922, Unknown=0, NotChecked=0, Total=9900 [2021-11-25 19:51:58,714 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 572 mSDsluCounter, 1169 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 320 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 575 SdHoareTripleChecker+Valid, 1261 SdHoareTripleChecker+Invalid, 1355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 320 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 375 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:51:58,714 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [575 Valid, 1261 Invalid, 1355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [320 Valid, 660 Invalid, 0 Unknown, 375 Unchecked, 3.0s Time] [2021-11-25 19:51:58,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1665 states. [2021-11-25 19:51:58,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1665 to 1416. [2021-11-25 19:51:58,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1416 states, 1127 states have (on average 1.1827861579414374) internal successors, (1333), 1125 states have internal predecessors, (1333), 170 states have call successors, (170), 108 states have call predecessors, (170), 118 states have return successors, (244), 182 states have call predecessors, (244), 170 states have call successors, (244) [2021-11-25 19:51:58,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1416 states to 1416 states and 1747 transitions. [2021-11-25 19:51:58,941 INFO L78 Accepts]: Start accepts. Automaton has 1416 states and 1747 transitions. Word has length 82 [2021-11-25 19:51:58,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:51:58,942 INFO L470 AbstractCegarLoop]: Abstraction has 1416 states and 1747 transitions. [2021-11-25 19:51:58,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 4.5813953488372094) internal successors, (197), 43 states have internal predecessors, (197), 6 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2021-11-25 19:51:58,942 INFO L276 IsEmpty]: Start isEmpty. Operand 1416 states and 1747 transitions. [2021-11-25 19:51:58,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-25 19:51:58,947 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:51:58,948 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:51:58,961 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2021-11-25 19:51:59,165 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (51)] Forceful destruction successful, exit code 0 [2021-11-25 19:51:59,386 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2021-11-25 19:51:59,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:51:59,562 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:51:59,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:51:59,563 INFO L85 PathProgramCache]: Analyzing trace with hash 599706749, now seen corresponding path program 12 times [2021-11-25 19:51:59,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:51:59,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1129171175] [2021-11-25 19:51:59,563 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-25 19:51:59,563 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:51:59,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:51:59,564 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:51:59,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec07260-ddc3-4824-a6bf-5ea5b134e26d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2021-11-25 19:52:00,940 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2021-11-25 19:52:00,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:52:00,976 WARN L261 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 86 conjunts are in the unsatisfiable core [2021-11-25 19:52:00,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:52:01,245 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-11-25 19:52:01,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:01,693 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 39 [2021-11-25 19:52:02,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:02,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:02,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:02,315 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:52:02,315 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 51 [2021-11-25 19:52:03,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:03,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:03,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:03,960 INFO L354 Elim1Store]: treesize reduction 195, result has 20.7 percent of original size [2021-11-25 19:52:03,960 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 72 treesize of output 77 [2021-11-25 19:52:05,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:05,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:05,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:05,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:05,147 INFO L354 Elim1Store]: treesize reduction 269, result has 15.9 percent of original size [2021-11-25 19:52:05,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 86 treesize of output 94 [2021-11-25 19:52:06,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:06,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:06,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:06,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:06,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:06,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:06,531 INFO L354 Elim1Store]: treesize reduction 346, result has 12.8 percent of original size [2021-11-25 19:52:06,531 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 101 treesize of output 112 [2021-11-25 19:52:10,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:10,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:10,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:10,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:10,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:10,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:10,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:10,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:10,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:10,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:10,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:10,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:10,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:10,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:10,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:10,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:10,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:10,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:10,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:10,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:10,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:10,527 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:52:10,527 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 122 treesize of output 136 [2021-11-25 19:52:12,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:12,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:12,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:12,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:12,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:12,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:12,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:12,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:12,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:12,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:12,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:12,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:12,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:12,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:12,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:12,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:12,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:12,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:12,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:12,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:12,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:12,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:12,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:12,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:12,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:12,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:12,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:12,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:12,238 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:52:12,238 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 140 treesize of output 157 [2021-11-25 19:52:14,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:14,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:14,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:14,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:14,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:14,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:14,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:14,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:14,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:14,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:14,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:14,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:14,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:14,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:14,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:14,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:14,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:14,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:14,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:14,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:14,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:14,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:14,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:14,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:14,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:14,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:14,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:14,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:14,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:14,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:14,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:14,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:14,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:14,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:14,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:14,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:14,170 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:52:14,170 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 106 treesize of output 126 [2021-11-25 19:52:23,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:23,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:23,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:24,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:24,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:24,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:24,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:24,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:24,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:24,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:24,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:24,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:24,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:24,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:24,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:24,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:24,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:24,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:24,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:24,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:24,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:24,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:24,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:24,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:24,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:24,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:24,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:24,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:24,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:24,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:24,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:24,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:24,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:24,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:24,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:24,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:24,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:24,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:24,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:24,380 INFO L354 Elim1Store]: treesize reduction 444, result has 12.6 percent of original size [2021-11-25 19:52:24,380 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 39 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 51 case distinctions, treesize of input 141 treesize of output 148 [2021-11-25 19:52:39,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:39,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:39,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:39,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:39,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:39,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:39,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:39,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:39,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:39,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:39,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:39,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:39,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:39,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:39,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:39,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:39,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:39,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:39,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:39,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:39,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:39,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:39,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:39,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:39,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:39,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:39,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:39,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:39,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:39,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:39,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:39,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:39,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:52:39,083 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:52:39,084 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 36 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 103 treesize of output 32 [2021-11-25 19:52:39,829 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 8 proven. 222 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-25 19:52:39,829 INFO L328 TraceCheckSpWp]: Computing backward predicates...