./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--md--dm-raid.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- 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_9a1b6329-cee7-435c-bcc3-043b9d39c6ed/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1b6329-cee7-435c-bcc3-043b9d39c6ed/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_9a1b6329-cee7-435c-bcc3-043b9d39c6ed/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1b6329-cee7-435c-bcc3-043b9d39c6ed/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--md--dm-raid.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1b6329-cee7-435c-bcc3-043b9d39c6ed/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1b6329-cee7-435c-bcc3-043b9d39c6ed/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 64bit --witnessprinter.graph.data.programhash 62515c851d4d8c80398352da8857a26e67ae776a292d33d62b0afdc92addb3ad --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 18:16:21,159 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 18:16:21,162 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 18:16:21,238 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 18:16:21,239 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 18:16:21,243 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 18:16:21,246 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 18:16:21,250 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 18:16:21,253 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 18:16:21,260 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 18:16:21,261 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 18:16:21,263 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 18:16:21,264 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 18:16:21,267 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 18:16:21,270 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 18:16:21,274 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 18:16:21,277 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 18:16:21,278 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 18:16:21,281 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 18:16:21,290 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 18:16:21,292 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 18:16:21,294 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 18:16:21,298 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 18:16:21,299 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 18:16:21,310 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 18:16:21,311 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 18:16:21,311 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 18:16:21,314 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 18:16:21,315 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 18:16:21,317 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 18:16:21,317 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 18:16:21,318 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 18:16:21,321 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 18:16:21,323 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 18:16:21,325 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 18:16:21,325 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 18:16:21,326 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 18:16:21,327 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 18:16:21,327 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 18:16:21,328 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 18:16:21,329 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 18:16:21,330 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1b6329-cee7-435c-bcc3-043b9d39c6ed/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 18:16:21,381 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 18:16:21,381 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 18:16:21,382 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 18:16:21,382 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 18:16:21,383 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 18:16:21,384 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 18:16:21,384 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 18:16:21,384 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 18:16:21,385 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 18:16:21,385 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 18:16:21,386 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 18:16:21,387 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 18:16:21,388 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 18:16:21,388 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 18:16:21,389 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 18:16:21,389 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 18:16:21,389 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 18:16:21,390 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 18:16:21,392 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 18:16:21,394 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 18:16:21,395 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 18:16:21,400 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 18:16:21,400 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 18:16:21,402 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 18:16:21,402 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 18:16:21,403 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 18:16:21,405 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 18:16:21,406 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 18:16:21,407 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 18:16:21,407 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:16:21,407 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 18:16:21,407 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 18:16:21,408 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 18:16:21,408 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 18:16:21,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 18:16:21,408 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 18:16:21,408 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 18:16:21,409 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 18:16:21,409 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_9a1b6329-cee7-435c-bcc3-043b9d39c6ed/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1b6329-cee7-435c-bcc3-043b9d39c6ed/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 62515c851d4d8c80398352da8857a26e67ae776a292d33d62b0afdc92addb3ad [2021-11-25 18:16:21,665 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 18:16:21,690 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 18:16:21,693 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 18:16:21,694 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 18:16:21,695 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 18:16:21,697 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1b6329-cee7-435c-bcc3-043b9d39c6ed/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--md--dm-raid.ko-entry_point.cil.out.i [2021-11-25 18:16:21,817 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1b6329-cee7-435c-bcc3-043b9d39c6ed/bin/utaipan-eEHZpOm5b7/data/b731af7e1/6f994548b9c343a9adaf0376471a753f/FLAG2e33e273a [2021-11-25 18:16:22,854 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 18:16:22,855 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1b6329-cee7-435c-bcc3-043b9d39c6ed/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--md--dm-raid.ko-entry_point.cil.out.i [2021-11-25 18:16:22,921 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1b6329-cee7-435c-bcc3-043b9d39c6ed/bin/utaipan-eEHZpOm5b7/data/b731af7e1/6f994548b9c343a9adaf0376471a753f/FLAG2e33e273a [2021-11-25 18:16:23,247 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1b6329-cee7-435c-bcc3-043b9d39c6ed/bin/utaipan-eEHZpOm5b7/data/b731af7e1/6f994548b9c343a9adaf0376471a753f [2021-11-25 18:16:23,250 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 18:16:23,251 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 18:16:23,253 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 18:16:23,253 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 18:16:23,257 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 18:16:23,258 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:16:23" (1/1) ... [2021-11-25 18:16:23,258 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b978ca4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:16:23, skipping insertion in model container [2021-11-25 18:16:23,259 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:16:23" (1/1) ... [2021-11-25 18:16:23,267 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 18:16:23,435 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:16:25,294 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_9a1b6329-cee7-435c-bcc3-043b9d39c6ed/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--md--dm-raid.ko-entry_point.cil.out.i[217361,217374] [2021-11-25 18:16:25,530 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:16:25,562 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 18:16:25,972 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_9a1b6329-cee7-435c-bcc3-043b9d39c6ed/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--md--dm-raid.ko-entry_point.cil.out.i[217361,217374] [2021-11-25 18:16:25,994 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:16:26,142 INFO L208 MainTranslator]: Completed translation [2021-11-25 18:16:26,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:16:26 WrapperNode [2021-11-25 18:16:26,143 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 18:16:26,145 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 18:16:26,145 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 18:16:26,145 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 18:16:26,154 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:16:26" (1/1) ... [2021-11-25 18:16:26,278 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:16:26" (1/1) ... [2021-11-25 18:16:26,483 INFO L137 Inliner]: procedures = 221, calls = 1591, calls flagged for inlining = 84, calls inlined = 76, statements flattened = 4430 [2021-11-25 18:16:26,484 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 18:16:26,485 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 18:16:26,486 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 18:16:26,486 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 18:16:26,497 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:16:26" (1/1) ... [2021-11-25 18:16:26,497 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:16:26" (1/1) ... [2021-11-25 18:16:26,551 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:16:26" (1/1) ... [2021-11-25 18:16:26,552 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:16:26" (1/1) ... [2021-11-25 18:16:26,718 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:16:26" (1/1) ... [2021-11-25 18:16:26,740 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:16:26" (1/1) ... [2021-11-25 18:16:26,758 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:16:26" (1/1) ... [2021-11-25 18:16:26,786 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 18:16:26,787 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 18:16:26,787 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 18:16:26,787 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 18:16:26,788 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:16:26" (1/1) ... [2021-11-25 18:16:26,798 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:16:26,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1b6329-cee7-435c-bcc3-043b9d39c6ed/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:16:26,830 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1b6329-cee7-435c-bcc3-043b9d39c6ed/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 18:16:26,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1b6329-cee7-435c-bcc3-043b9d39c6ed/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 18:16:26,881 INFO L130 BoogieDeclarations]: Found specification of procedure dm_table_get_mode [2021-11-25 18:16:26,882 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_table_get_mode [2021-11-25 18:16:26,882 INFO L130 BoogieDeclarations]: Found specification of procedure bdev_get_queue [2021-11-25 18:16:26,882 INFO L138 BoogieDeclarations]: Found implementation of procedure bdev_get_queue [2021-11-25 18:16:26,882 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-25 18:16:26,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-25 18:16:26,883 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-25 18:16:26,883 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-25 18:16:26,883 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2021-11-25 18:16:26,883 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2021-11-25 18:16:26,884 INFO L130 BoogieDeclarations]: Found specification of procedure raid10_md_layout_to_format [2021-11-25 18:16:26,884 INFO L138 BoogieDeclarations]: Found implementation of procedure raid10_md_layout_to_format [2021-11-25 18:16:26,884 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-25 18:16:26,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-25 18:16:26,884 INFO L130 BoogieDeclarations]: Found specification of procedure raid_io_hints [2021-11-25 18:16:26,885 INFO L138 BoogieDeclarations]: Found implementation of procedure raid_io_hints [2021-11-25 18:16:26,885 INFO L130 BoogieDeclarations]: Found specification of procedure raid_message [2021-11-25 18:16:26,885 INFO L138 BoogieDeclarations]: Found implementation of procedure raid_message [2021-11-25 18:16:26,885 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-25 18:16:26,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-25 18:16:26,886 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-25 18:16:26,886 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-25 18:16:26,886 INFO L130 BoogieDeclarations]: Found specification of procedure raid10_md_layout_to_copies [2021-11-25 18:16:26,886 INFO L138 BoogieDeclarations]: Found implementation of procedure raid10_md_layout_to_copies [2021-11-25 18:16:26,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-25 18:16:26,886 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-25 18:16:26,887 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-25 18:16:26,887 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-25 18:16:26,887 INFO L130 BoogieDeclarations]: Found specification of procedure context_free [2021-11-25 18:16:26,887 INFO L138 BoogieDeclarations]: Found implementation of procedure context_free [2021-11-25 18:16:26,887 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-11-25 18:16:26,888 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-11-25 18:16:26,888 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2021-11-25 18:16:26,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2021-11-25 18:16:26,888 INFO L130 BoogieDeclarations]: Found specification of procedure super_validate [2021-11-25 18:16:26,888 INFO L138 BoogieDeclarations]: Found implementation of procedure super_validate [2021-11-25 18:16:26,889 INFO L130 BoogieDeclarations]: Found specification of procedure do_table_event [2021-11-25 18:16:26,889 INFO L138 BoogieDeclarations]: Found implementation of procedure do_table_event [2021-11-25 18:16:26,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 18:16:26,889 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-25 18:16:26,889 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-25 18:16:26,890 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 18:16:26,890 INFO L130 BoogieDeclarations]: Found specification of procedure sync_page_io [2021-11-25 18:16:26,890 INFO L138 BoogieDeclarations]: Found implementation of procedure sync_page_io [2021-11-25 18:16:26,890 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-25 18:16:26,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-25 18:16:26,891 INFO L130 BoogieDeclarations]: Found specification of procedure to_sector [2021-11-25 18:16:26,891 INFO L138 BoogieDeclarations]: Found implementation of procedure to_sector [2021-11-25 18:16:26,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 18:16:26,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 18:16:26,891 INFO L130 BoogieDeclarations]: Found specification of procedure raid_iterate_devices [2021-11-25 18:16:26,892 INFO L138 BoogieDeclarations]: Found implementation of procedure raid_iterate_devices [2021-11-25 18:16:26,892 INFO L130 BoogieDeclarations]: Found specification of procedure dm_put_device [2021-11-25 18:16:26,892 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_put_device [2021-11-25 18:16:26,892 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_reconfig_mutex_of_mddev [2021-11-25 18:16:26,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_reconfig_mutex_of_mddev [2021-11-25 18:16:26,893 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 18:16:26,893 INFO L130 BoogieDeclarations]: Found specification of procedure mddev_suspend [2021-11-25 18:16:26,893 INFO L138 BoogieDeclarations]: Found implementation of procedure mddev_suspend [2021-11-25 18:16:26,893 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-25 18:16:26,894 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-25 18:16:26,894 INFO L130 BoogieDeclarations]: Found specification of procedure super_sync [2021-11-25 18:16:26,894 INFO L138 BoogieDeclarations]: Found implementation of procedure super_sync [2021-11-25 18:16:26,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 18:16:26,894 INFO L130 BoogieDeclarations]: Found specification of procedure is_power_of_2 [2021-11-25 18:16:26,894 INFO L138 BoogieDeclarations]: Found implementation of procedure is_power_of_2 [2021-11-25 18:16:26,895 INFO L130 BoogieDeclarations]: Found specification of procedure md_wakeup_thread [2021-11-25 18:16:26,895 INFO L138 BoogieDeclarations]: Found implementation of procedure md_wakeup_thread [2021-11-25 18:16:26,895 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-11-25 18:16:26,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-11-25 18:16:26,895 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 18:16:26,896 INFO L130 BoogieDeclarations]: Found specification of procedure raid_merge [2021-11-25 18:16:26,896 INFO L138 BoogieDeclarations]: Found implementation of procedure raid_merge [2021-11-25 18:16:26,896 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-11-25 18:16:26,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-11-25 18:16:26,896 INFO L130 BoogieDeclarations]: Found specification of procedure raid_map [2021-11-25 18:16:26,897 INFO L138 BoogieDeclarations]: Found implementation of procedure raid_map [2021-11-25 18:16:26,897 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 18:16:26,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 18:16:26,897 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-11-25 18:16:26,897 INFO L138 BoogieDeclarations]: Found implementation of procedure strcasecmp [2021-11-25 18:16:26,898 INFO L130 BoogieDeclarations]: Found specification of procedure md_stop [2021-11-25 18:16:26,898 INFO L138 BoogieDeclarations]: Found implementation of procedure md_stop [2021-11-25 18:16:26,898 INFO L130 BoogieDeclarations]: Found specification of procedure raid_status [2021-11-25 18:16:26,898 INFO L138 BoogieDeclarations]: Found implementation of procedure raid_status [2021-11-25 18:16:26,898 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtoul [2021-11-25 18:16:26,898 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtoul [2021-11-25 18:16:26,899 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-25 18:16:26,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-25 18:16:26,899 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-25 18:16:26,899 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-25 18:16:26,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 18:16:26,900 INFO L130 BoogieDeclarations]: Found specification of procedure raid_dtr [2021-11-25 18:16:26,900 INFO L138 BoogieDeclarations]: Found implementation of procedure raid_dtr [2021-11-25 18:16:26,900 INFO L130 BoogieDeclarations]: Found specification of procedure dm_get_device [2021-11-25 18:16:26,900 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_get_device [2021-11-25 18:16:26,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 18:16:26,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 18:16:26,901 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-25 18:16:26,901 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-25 18:16:27,520 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 18:16:27,524 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 18:16:28,053 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-25 18:16:31,354 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 18:16:32,173 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 18:16:32,174 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-25 18:16:32,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:16:32 BoogieIcfgContainer [2021-11-25 18:16:32,179 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 18:16:32,181 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 18:16:32,181 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 18:16:32,185 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 18:16:32,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:16:23" (1/3) ... [2021-11-25 18:16:32,186 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49161262 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:16:32, skipping insertion in model container [2021-11-25 18:16:32,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:16:26" (2/3) ... [2021-11-25 18:16:32,187 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49161262 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:16:32, skipping insertion in model container [2021-11-25 18:16:32,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:16:32" (3/3) ... [2021-11-25 18:16:32,188 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--md--dm-raid.ko-entry_point.cil.out.i [2021-11-25 18:16:32,194 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 18:16:32,194 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 18:16:32,272 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 18:16:32,282 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 18:16:32,288 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 18:16:32,400 INFO L276 IsEmpty]: Start isEmpty. Operand has 874 states, 613 states have (on average 1.468189233278956) internal successors, (900), 634 states have internal predecessors, (900), 216 states have call successors, (216), 44 states have call predecessors, (216), 43 states have return successors, (212), 208 states have call predecessors, (212), 212 states have call successors, (212) [2021-11-25 18:16:32,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-11-25 18:16:32,424 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:16:32,425 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 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, 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 18:16:32,427 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:16:32,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:16:32,438 INFO L85 PathProgramCache]: Analyzing trace with hash -861204368, now seen corresponding path program 1 times [2021-11-25 18:16:32,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:16:32,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989883000] [2021-11-25 18:16:32,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:16:32,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:16:32,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:16:33,300 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 427 trivial. 0 not checked. [2021-11-25 18:16:33,301 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:16:33,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989883000] [2021-11-25 18:16:33,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989883000] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:16:33,302 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:16:33,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:16:33,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885334945] [2021-11-25 18:16:33,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:16:33,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:16:33,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:16:33,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:16:33,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:16:33,393 INFO L87 Difference]: Start difference. First operand has 874 states, 613 states have (on average 1.468189233278956) internal successors, (900), 634 states have internal predecessors, (900), 216 states have call successors, (216), 44 states have call predecessors, (216), 43 states have return successors, (212), 208 states have call predecessors, (212), 212 states have call successors, (212) Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2021-11-25 18:16:35,485 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:16:38,961 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:16:42,759 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:16:42,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:16:42,957 INFO L93 Difference]: Finished difference Result 2526 states and 3851 transitions. [2021-11-25 18:16:42,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:16:42,969 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 170 [2021-11-25 18:16:42,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:16:43,017 INFO L225 Difference]: With dead ends: 2526 [2021-11-25 18:16:43,018 INFO L226 Difference]: Without dead ends: 1673 [2021-11-25 18:16:43,036 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:16:43,041 INFO L933 BasicCegarLoop]: 1378 mSDtfsCounter, 1232 mSDsluCounter, 1310 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1232 SdHoareTripleChecker+Valid, 2560 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:16:43,042 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1232 Valid, 2560 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 270 Invalid, 2 Unknown, 0 Unchecked, 9.3s Time] [2021-11-25 18:16:43,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1673 states. [2021-11-25 18:16:43,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1673 to 1670. [2021-11-25 18:16:43,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1670 states, 1188 states have (on average 1.4638047138047139) internal successors, (1739), 1214 states have internal predecessors, (1739), 400 states have call successors, (400), 82 states have call predecessors, (400), 81 states have return successors, (395), 387 states have call predecessors, (395), 395 states have call successors, (395) [2021-11-25 18:16:43,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1670 states to 1670 states and 2534 transitions. [2021-11-25 18:16:43,411 INFO L78 Accepts]: Start accepts. Automaton has 1670 states and 2534 transitions. Word has length 170 [2021-11-25 18:16:43,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:16:43,416 INFO L470 AbstractCegarLoop]: Abstraction has 1670 states and 2534 transitions. [2021-11-25 18:16:43,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2021-11-25 18:16:43,418 INFO L276 IsEmpty]: Start isEmpty. Operand 1670 states and 2534 transitions. [2021-11-25 18:16:43,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-11-25 18:16:43,438 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:16:43,439 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 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, 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 18:16:43,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 18:16:43,440 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:16:43,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:16:43,445 INFO L85 PathProgramCache]: Analyzing trace with hash 4786961, now seen corresponding path program 1 times [2021-11-25 18:16:43,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:16:43,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282778518] [2021-11-25 18:16:43,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:16:43,449 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:16:43,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:16:43,962 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 427 trivial. 0 not checked. [2021-11-25 18:16:43,962 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:16:43,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282778518] [2021-11-25 18:16:43,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282778518] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:16:43,964 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:16:43,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:16:43,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313315886] [2021-11-25 18:16:43,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:16:43,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:16:43,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:16:43,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:16:43,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:16:43,971 INFO L87 Difference]: Start difference. First operand 1670 states and 2534 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-25 18:16:46,008 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:16:48,861 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:16:48,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:16:48,976 INFO L93 Difference]: Finished difference Result 1672 states and 2535 transitions. [2021-11-25 18:16:48,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:16:48,977 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 173 [2021-11-25 18:16:48,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:16:48,996 INFO L225 Difference]: With dead ends: 1672 [2021-11-25 18:16:48,997 INFO L226 Difference]: Without dead ends: 1669 [2021-11-25 18:16:48,999 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:16:49,001 INFO L933 BasicCegarLoop]: 1174 mSDtfsCounter, 1266 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1266 SdHoareTripleChecker+Valid, 1174 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2021-11-25 18:16:49,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1266 Valid, 1174 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 132 Invalid, 1 Unknown, 0 Unchecked, 4.9s Time] [2021-11-25 18:16:49,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1669 states. [2021-11-25 18:16:49,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1669 to 1669. [2021-11-25 18:16:49,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1669 states, 1188 states have (on average 1.462962962962963) internal successors, (1738), 1213 states have internal predecessors, (1738), 399 states have call successors, (399), 82 states have call predecessors, (399), 81 states have return successors, (395), 387 states have call predecessors, (395), 395 states have call successors, (395) [2021-11-25 18:16:49,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1669 states to 1669 states and 2532 transitions. [2021-11-25 18:16:49,121 INFO L78 Accepts]: Start accepts. Automaton has 1669 states and 2532 transitions. Word has length 173 [2021-11-25 18:16:49,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:16:49,123 INFO L470 AbstractCegarLoop]: Abstraction has 1669 states and 2532 transitions. [2021-11-25 18:16:49,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-25 18:16:49,123 INFO L276 IsEmpty]: Start isEmpty. Operand 1669 states and 2532 transitions. [2021-11-25 18:16:49,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-11-25 18:16:49,128 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:16:49,128 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 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, 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 18:16:49,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 18:16:49,130 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:16:49,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:16:49,130 INFO L85 PathProgramCache]: Analyzing trace with hash 148093262, now seen corresponding path program 1 times [2021-11-25 18:16:49,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:16:49,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713171137] [2021-11-25 18:16:49,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:16:49,131 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:16:49,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:16:49,494 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 427 trivial. 0 not checked. [2021-11-25 18:16:49,495 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:16:49,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713171137] [2021-11-25 18:16:49,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713171137] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:16:49,495 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:16:49,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:16:49,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042880223] [2021-11-25 18:16:49,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:16:49,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:16:49,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:16:49,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:16:49,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:16:49,498 INFO L87 Difference]: Start difference. First operand 1669 states and 2532 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-25 18:16:51,527 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:16:54,900 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:16:55,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:16:55,098 INFO L93 Difference]: Finished difference Result 1671 states and 2533 transitions. [2021-11-25 18:16:55,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:16:55,099 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 174 [2021-11-25 18:16:55,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:16:55,117 INFO L225 Difference]: With dead ends: 1671 [2021-11-25 18:16:55,117 INFO L226 Difference]: Without dead ends: 1668 [2021-11-25 18:16:55,119 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:16:55,122 INFO L933 BasicCegarLoop]: 1172 mSDtfsCounter, 1263 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1263 SdHoareTripleChecker+Valid, 1172 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2021-11-25 18:16:55,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1263 Valid, 1172 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 132 Invalid, 1 Unknown, 0 Unchecked, 5.5s Time] [2021-11-25 18:16:55,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1668 states. [2021-11-25 18:16:55,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1668 to 1668. [2021-11-25 18:16:55,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1668 states, 1188 states have (on average 1.4621212121212122) internal successors, (1737), 1212 states have internal predecessors, (1737), 398 states have call successors, (398), 82 states have call predecessors, (398), 81 states have return successors, (395), 387 states have call predecessors, (395), 395 states have call successors, (395) [2021-11-25 18:16:55,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1668 states to 1668 states and 2530 transitions. [2021-11-25 18:16:55,247 INFO L78 Accepts]: Start accepts. Automaton has 1668 states and 2530 transitions. Word has length 174 [2021-11-25 18:16:55,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:16:55,248 INFO L470 AbstractCegarLoop]: Abstraction has 1668 states and 2530 transitions. [2021-11-25 18:16:55,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-25 18:16:55,248 INFO L276 IsEmpty]: Start isEmpty. Operand 1668 states and 2530 transitions. [2021-11-25 18:16:55,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-11-25 18:16:55,254 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:16:55,254 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 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, 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 18:16:55,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 18:16:55,255 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:16:55,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:16:55,255 INFO L85 PathProgramCache]: Analyzing trace with hash 295626164, now seen corresponding path program 1 times [2021-11-25 18:16:55,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:16:55,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088058636] [2021-11-25 18:16:55,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:16:55,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:16:55,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:16:55,543 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 427 trivial. 0 not checked. [2021-11-25 18:16:55,544 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:16:55,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088058636] [2021-11-25 18:16:55,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088058636] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:16:55,544 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:16:55,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:16:55,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397662117] [2021-11-25 18:16:55,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:16:55,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:16:55,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:16:55,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:16:55,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:16:55,547 INFO L87 Difference]: Start difference. First operand 1668 states and 2530 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-25 18:16:57,583 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:16:59,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:16:59,411 INFO L93 Difference]: Finished difference Result 1670 states and 2531 transitions. [2021-11-25 18:16:59,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:16:59,412 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 175 [2021-11-25 18:16:59,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:16:59,428 INFO L225 Difference]: With dead ends: 1670 [2021-11-25 18:16:59,428 INFO L226 Difference]: Without dead ends: 1667 [2021-11-25 18:16:59,430 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:16:59,431 INFO L933 BasicCegarLoop]: 1170 mSDtfsCounter, 1260 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1260 SdHoareTripleChecker+Valid, 1170 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-11-25 18:16:59,432 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1260 Valid, 1170 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 132 Invalid, 1 Unknown, 0 Unchecked, 3.8s Time] [2021-11-25 18:16:59,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1667 states. [2021-11-25 18:16:59,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1667 to 1667. [2021-11-25 18:16:59,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1667 states, 1188 states have (on average 1.4612794612794613) internal successors, (1736), 1211 states have internal predecessors, (1736), 397 states have call successors, (397), 82 states have call predecessors, (397), 81 states have return successors, (395), 387 states have call predecessors, (395), 395 states have call successors, (395) [2021-11-25 18:16:59,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1667 states to 1667 states and 2528 transitions. [2021-11-25 18:16:59,549 INFO L78 Accepts]: Start accepts. Automaton has 1667 states and 2528 transitions. Word has length 175 [2021-11-25 18:16:59,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:16:59,550 INFO L470 AbstractCegarLoop]: Abstraction has 1667 states and 2528 transitions. [2021-11-25 18:16:59,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-25 18:16:59,551 INFO L276 IsEmpty]: Start isEmpty. Operand 1667 states and 2528 transitions. [2021-11-25 18:16:59,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-25 18:16:59,554 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:16:59,555 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 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, 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 18:16:59,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 18:16:59,555 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:16:59,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:16:59,557 INFO L85 PathProgramCache]: Analyzing trace with hash 574183697, now seen corresponding path program 1 times [2021-11-25 18:16:59,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:16:59,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083100529] [2021-11-25 18:16:59,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:16:59,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:16:59,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:16:59,823 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 427 trivial. 0 not checked. [2021-11-25 18:16:59,823 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:16:59,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083100529] [2021-11-25 18:16:59,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083100529] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:16:59,824 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:16:59,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:16:59,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836132256] [2021-11-25 18:16:59,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:16:59,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:16:59,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:16:59,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:16:59,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:16:59,828 INFO L87 Difference]: Start difference. First operand 1667 states and 2528 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-25 18:17:01,859 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:17:06,472 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:17:06,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:17:06,912 INFO L93 Difference]: Finished difference Result 3263 states and 4956 transitions. [2021-11-25 18:17:06,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:17:06,913 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 176 [2021-11-25 18:17:06,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:17:06,939 INFO L225 Difference]: With dead ends: 3263 [2021-11-25 18:17:06,939 INFO L226 Difference]: Without dead ends: 3254 [2021-11-25 18:17:06,942 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:17:06,943 INFO L933 BasicCegarLoop]: 1358 mSDtfsCounter, 1227 mSDsluCounter, 1249 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1227 SdHoareTripleChecker+Valid, 2481 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2021-11-25 18:17:06,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1227 Valid, 2481 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 260 Invalid, 2 Unknown, 0 Unchecked, 6.9s Time] [2021-11-25 18:17:06,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3254 states. [2021-11-25 18:17:07,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3254 to 3254. [2021-11-25 18:17:07,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3254 states, 2328 states have (on average 1.4643470790378006) internal successors, (3409), 2371 states have internal predecessors, (3409), 768 states have call successors, (768), 160 states have call predecessors, (768), 157 states have return successors, (766), 748 states have call predecessors, (766), 766 states have call successors, (766) [2021-11-25 18:17:07,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3254 states to 3254 states and 4943 transitions. [2021-11-25 18:17:07,162 INFO L78 Accepts]: Start accepts. Automaton has 3254 states and 4943 transitions. Word has length 176 [2021-11-25 18:17:07,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:17:07,163 INFO L470 AbstractCegarLoop]: Abstraction has 3254 states and 4943 transitions. [2021-11-25 18:17:07,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-25 18:17:07,164 INFO L276 IsEmpty]: Start isEmpty. Operand 3254 states and 4943 transitions. [2021-11-25 18:17:07,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2021-11-25 18:17:07,176 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:17:07,177 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 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, 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, 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, 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 18:17:07,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 18:17:07,177 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:17:07,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:17:07,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1813531555, now seen corresponding path program 1 times [2021-11-25 18:17:07,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:17:07,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784431980] [2021-11-25 18:17:07,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:17:07,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:17:07,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:17:07,432 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 433 trivial. 0 not checked. [2021-11-25 18:17:07,432 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:17:07,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784431980] [2021-11-25 18:17:07,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784431980] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:17:07,434 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:17:07,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:17:07,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109535546] [2021-11-25 18:17:07,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:17:07,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:17:07,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:17:07,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:17:07,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:17:07,437 INFO L87 Difference]: Start difference. First operand 3254 states and 4943 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-25 18:17:09,470 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:17:14,377 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:17:14,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:17:14,679 INFO L93 Difference]: Finished difference Result 6629 states and 10071 transitions. [2021-11-25 18:17:14,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:17:14,680 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 250 [2021-11-25 18:17:14,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:17:14,710 INFO L225 Difference]: With dead ends: 6629 [2021-11-25 18:17:14,710 INFO L226 Difference]: Without dead ends: 3410 [2021-11-25 18:17:14,724 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:17:14,726 INFO L933 BasicCegarLoop]: 1184 mSDtfsCounter, 62 mSDsluCounter, 1188 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 2246 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:17:14,727 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 2246 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 371 Invalid, 1 Unknown, 0 Unchecked, 7.0s Time] [2021-11-25 18:17:14,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3410 states. [2021-11-25 18:17:14,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3410 to 3402. [2021-11-25 18:17:14,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3402 states, 2456 states have (on average 1.4662052117263844) internal successors, (3601), 2499 states have internal predecessors, (3601), 784 states have call successors, (784), 164 states have call predecessors, (784), 161 states have return successors, (782), 764 states have call predecessors, (782), 782 states have call successors, (782) [2021-11-25 18:17:14,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3402 states to 3402 states and 5167 transitions. [2021-11-25 18:17:14,941 INFO L78 Accepts]: Start accepts. Automaton has 3402 states and 5167 transitions. Word has length 250 [2021-11-25 18:17:14,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:17:14,942 INFO L470 AbstractCegarLoop]: Abstraction has 3402 states and 5167 transitions. [2021-11-25 18:17:14,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-25 18:17:14,942 INFO L276 IsEmpty]: Start isEmpty. Operand 3402 states and 5167 transitions. [2021-11-25 18:17:14,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2021-11-25 18:17:14,960 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:17:14,960 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 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, 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, 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, 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, 1, 1, 1, 1, 1] [2021-11-25 18:17:14,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 18:17:14,961 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:17:14,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:17:14,962 INFO L85 PathProgramCache]: Analyzing trace with hash 2138919815, now seen corresponding path program 1 times [2021-11-25 18:17:14,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:17:14,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961100725] [2021-11-25 18:17:14,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:17:14,963 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:17:15,149 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 18:17:15,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [720774642] [2021-11-25 18:17:15,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:17:15,151 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:17:15,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1b6329-cee7-435c-bcc3-043b9d39c6ed/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:17:15,157 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1b6329-cee7-435c-bcc3-043b9d39c6ed/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:17:15,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1b6329-cee7-435c-bcc3-043b9d39c6ed/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 18:17:16,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:17:16,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 3669 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 18:17:16,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:17:17,051 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 516 trivial. 0 not checked. [2021-11-25 18:17:17,052 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:17:17,052 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:17:17,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961100725] [2021-11-25 18:17:17,052 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 18:17:17,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720774642] [2021-11-25 18:17:17,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720774642] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:17:17,053 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:17:17,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 18:17:17,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909400942] [2021-11-25 18:17:17,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:17:17,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 18:17:17,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:17:17,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 18:17:17,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:17:17,056 INFO L87 Difference]: Start difference. First operand 3402 states and 5167 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-25 18:17:19,090 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:17:22,567 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:17:26,823 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:17:28,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:17:28,249 INFO L93 Difference]: Finished difference Result 9126 states and 14153 transitions. [2021-11-25 18:17:28,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:17:28,253 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 271 [2021-11-25 18:17:28,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:17:28,308 INFO L225 Difference]: With dead ends: 9126 [2021-11-25 18:17:28,309 INFO L226 Difference]: Without dead ends: 5759 [2021-11-25 18:17:28,335 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:17:28,337 INFO L933 BasicCegarLoop]: 1665 mSDtfsCounter, 872 mSDsluCounter, 3265 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 124 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 978 SdHoareTripleChecker+Valid, 4642 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 463 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2021-11-25 18:17:28,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [978 Valid, 4642 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 463 Invalid, 3 Unknown, 0 Unchecked, 10.9s Time] [2021-11-25 18:17:28,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5759 states. [2021-11-25 18:17:28,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5759 to 3410. [2021-11-25 18:17:28,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3410 states, 2464 states have (on average 1.4646915584415585) internal successors, (3609), 2507 states have internal predecessors, (3609), 784 states have call successors, (784), 164 states have call predecessors, (784), 161 states have return successors, (782), 764 states have call predecessors, (782), 782 states have call successors, (782) [2021-11-25 18:17:28,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3410 states to 3410 states and 5175 transitions. [2021-11-25 18:17:28,676 INFO L78 Accepts]: Start accepts. Automaton has 3410 states and 5175 transitions. Word has length 271 [2021-11-25 18:17:28,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:17:28,677 INFO L470 AbstractCegarLoop]: Abstraction has 3410 states and 5175 transitions. [2021-11-25 18:17:28,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-25 18:17:28,678 INFO L276 IsEmpty]: Start isEmpty. Operand 3410 states and 5175 transitions. [2021-11-25 18:17:28,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2021-11-25 18:17:28,694 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:17:28,694 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:17:28,746 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1b6329-cee7-435c-bcc3-043b9d39c6ed/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 18:17:28,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1b6329-cee7-435c-bcc3-043b9d39c6ed/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-25 18:17:28,917 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:17:28,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:17:28,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1389505489, now seen corresponding path program 1 times [2021-11-25 18:17:28,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:17:28,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192342927] [2021-11-25 18:17:28,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:17:28,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:17:29,134 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 18:17:29,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [353824614] [2021-11-25 18:17:29,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:17:29,135 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:17:29,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1b6329-cee7-435c-bcc3-043b9d39c6ed/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:17:29,140 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1b6329-cee7-435c-bcc3-043b9d39c6ed/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:17:29,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1b6329-cee7-435c-bcc3-043b9d39c6ed/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 18:17:30,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:17:30,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 3827 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 18:17:30,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:17:30,943 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 516 trivial. 0 not checked. [2021-11-25 18:17:30,943 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:17:30,944 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:17:30,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192342927] [2021-11-25 18:17:30,944 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 18:17:30,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353824614] [2021-11-25 18:17:30,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [353824614] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:17:30,944 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:17:30,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 18:17:30,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873034562] [2021-11-25 18:17:30,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:17:30,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 18:17:30,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:17:30,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 18:17:30,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:17:30,948 INFO L87 Difference]: Start difference. First operand 3410 states and 5175 transitions. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-25 18:17:32,424 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:17:36,103 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:17:39,172 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:17:41,995 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:17:44,150 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:17:45,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:17:45,039 INFO L93 Difference]: Finished difference Result 9113 states and 14134 transitions. [2021-11-25 18:17:45,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 18:17:45,040 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 284 [2021-11-25 18:17:45,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:17:45,085 INFO L225 Difference]: With dead ends: 9113 [2021-11-25 18:17:45,086 INFO L226 Difference]: Without dead ends: 5738 [2021-11-25 18:17:45,102 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:17:45,102 INFO L933 BasicCegarLoop]: 1696 mSDtfsCounter, 861 mSDsluCounter, 3164 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 115 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 935 SdHoareTripleChecker+Valid, 4573 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.8s IncrementalHoareTripleChecker+Time [2021-11-25 18:17:45,103 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [935 Valid, 4573 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 453 Invalid, 3 Unknown, 0 Unchecked, 13.8s Time] [2021-11-25 18:17:45,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5738 states. [2021-11-25 18:17:45,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5738 to 3418. [2021-11-25 18:17:45,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3418 states, 2472 states have (on average 1.463187702265372) internal successors, (3617), 2515 states have internal predecessors, (3617), 784 states have call successors, (784), 164 states have call predecessors, (784), 161 states have return successors, (782), 764 states have call predecessors, (782), 782 states have call successors, (782) [2021-11-25 18:17:45,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3418 states to 3418 states and 5183 transitions. [2021-11-25 18:17:45,338 INFO L78 Accepts]: Start accepts. Automaton has 3418 states and 5183 transitions. Word has length 284 [2021-11-25 18:17:45,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:17:45,339 INFO L470 AbstractCegarLoop]: Abstraction has 3418 states and 5183 transitions. [2021-11-25 18:17:45,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-25 18:17:45,339 INFO L276 IsEmpty]: Start isEmpty. Operand 3418 states and 5183 transitions. [2021-11-25 18:17:45,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2021-11-25 18:17:45,355 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:17:45,355 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:17:45,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1b6329-cee7-435c-bcc3-043b9d39c6ed/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-25 18:17:45,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1b6329-cee7-435c-bcc3-043b9d39c6ed/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-25 18:17:45,569 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:17:45,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:17:45,569 INFO L85 PathProgramCache]: Analyzing trace with hash -338892400, now seen corresponding path program 1 times [2021-11-25 18:17:45,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:17:45,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883674886] [2021-11-25 18:17:45,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:17:45,570 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:17:45,749 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 18:17:45,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [95858980] [2021-11-25 18:17:45,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:17:45,750 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:17:45,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1b6329-cee7-435c-bcc3-043b9d39c6ed/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:17:45,752 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1b6329-cee7-435c-bcc3-043b9d39c6ed/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:17:45,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1b6329-cee7-435c-bcc3-043b9d39c6ed/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 18:17:46,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:17:46,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 3822 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 18:17:46,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:17:47,275 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 516 trivial. 0 not checked. [2021-11-25 18:17:47,276 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:17:47,276 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:17:47,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883674886] [2021-11-25 18:17:47,276 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 18:17:47,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95858980] [2021-11-25 18:17:47,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95858980] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:17:47,276 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:17:47,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 18:17:47,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246058813] [2021-11-25 18:17:47,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:17:47,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 18:17:47,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:17:47,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 18:17:47,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:17:47,278 INFO L87 Difference]: Start difference. First operand 3418 states and 5183 transitions. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-25 18:17:49,099 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:17:51,179 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:17:53,272 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:17:55,349 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:17:59,591 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:18:00,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:18:00,809 INFO L93 Difference]: Finished difference Result 9586 states and 14897 transitions. [2021-11-25 18:18:00,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:18:00,809 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 284 [2021-11-25 18:18:00,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:18:00,853 INFO L225 Difference]: With dead ends: 9586 [2021-11-25 18:18:00,853 INFO L226 Difference]: Without dead ends: 6203 [2021-11-25 18:18:00,869 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:18:00,870 INFO L933 BasicCegarLoop]: 1811 mSDtfsCounter, 1012 mSDsluCounter, 3474 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 103 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1141 SdHoareTripleChecker+Valid, 4981 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:18:00,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1141 Valid, 4981 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 502 Invalid, 3 Unknown, 0 Unchecked, 13.3s Time] [2021-11-25 18:18:00,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6203 states. [2021-11-25 18:18:01,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6203 to 3426. [2021-11-25 18:18:01,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3426 states, 2480 states have (on average 1.4616935483870968) internal successors, (3625), 2523 states have internal predecessors, (3625), 784 states have call successors, (784), 164 states have call predecessors, (784), 161 states have return successors, (782), 764 states have call predecessors, (782), 782 states have call successors, (782) [2021-11-25 18:18:01,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3426 states to 3426 states and 5191 transitions. [2021-11-25 18:18:01,141 INFO L78 Accepts]: Start accepts. Automaton has 3426 states and 5191 transitions. Word has length 284 [2021-11-25 18:18:01,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:18:01,142 INFO L470 AbstractCegarLoop]: Abstraction has 3426 states and 5191 transitions. [2021-11-25 18:18:01,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-25 18:18:01,143 INFO L276 IsEmpty]: Start isEmpty. Operand 3426 states and 5191 transitions. [2021-11-25 18:18:01,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2021-11-25 18:18:01,157 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:18:01,158 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:18:01,210 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1b6329-cee7-435c-bcc3-043b9d39c6ed/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-25 18:18:01,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1b6329-cee7-435c-bcc3-043b9d39c6ed/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-11-25 18:18:01,384 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:18:01,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:18:01,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1190193967, now seen corresponding path program 1 times [2021-11-25 18:18:01,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:18:01,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987698789] [2021-11-25 18:18:01,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:18:01,385 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:18:01,580 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 18:18:01,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [997191867] [2021-11-25 18:18:01,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:18:01,581 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:18:01,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1b6329-cee7-435c-bcc3-043b9d39c6ed/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:18:01,584 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1b6329-cee7-435c-bcc3-043b9d39c6ed/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:18:01,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1b6329-cee7-435c-bcc3-043b9d39c6ed/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-25 18:18:02,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:18:02,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 3838 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 18:18:02,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:18:03,115 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 516 trivial. 0 not checked. [2021-11-25 18:18:03,115 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:18:03,115 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:18:03,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987698789] [2021-11-25 18:18:03,115 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 18:18:03,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [997191867] [2021-11-25 18:18:03,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [997191867] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:18:03,116 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:18:03,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:18:03,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063728601] [2021-11-25 18:18:03,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:18:03,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:18:03,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:18:03,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:18:03,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:18:03,118 INFO L87 Difference]: Start difference. First operand 3426 states and 5191 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-25 18:18:06,185 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:18:10,314 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:18:12,608 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:18:12,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:18:12,770 INFO L93 Difference]: Finished difference Result 8811 states and 13591 transitions. [2021-11-25 18:18:12,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:18:12,771 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 284 [2021-11-25 18:18:12,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:18:12,803 INFO L225 Difference]: With dead ends: 8811 [2021-11-25 18:18:12,803 INFO L226 Difference]: Without dead ends: 5420 [2021-11-25 18:18:12,820 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:18:12,821 INFO L933 BasicCegarLoop]: 1701 mSDtfsCounter, 541 mSDsluCounter, 1373 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 652 SdHoareTripleChecker+Valid, 2946 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:18:12,821 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [652 Valid, 2946 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 289 Invalid, 2 Unknown, 0 Unchecked, 9.4s Time] [2021-11-25 18:18:12,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5420 states. [2021-11-25 18:18:13,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5420 to 3502. [2021-11-25 18:18:13,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3502 states, 2540 states have (on average 1.4618110236220472) internal successors, (3713), 2583 states have internal predecessors, (3713), 800 states have call successors, (800), 164 states have call predecessors, (800), 161 states have return successors, (798), 780 states have call predecessors, (798), 798 states have call successors, (798) [2021-11-25 18:18:13,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3502 states to 3502 states and 5311 transitions. [2021-11-25 18:18:13,132 INFO L78 Accepts]: Start accepts. Automaton has 3502 states and 5311 transitions. Word has length 284 [2021-11-25 18:18:13,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:18:13,133 INFO L470 AbstractCegarLoop]: Abstraction has 3502 states and 5311 transitions. [2021-11-25 18:18:13,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-25 18:18:13,133 INFO L276 IsEmpty]: Start isEmpty. Operand 3502 states and 5311 transitions. [2021-11-25 18:18:13,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2021-11-25 18:18:13,145 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:18:13,145 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:18:13,196 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1b6329-cee7-435c-bcc3-043b9d39c6ed/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-25 18:18:13,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1b6329-cee7-435c-bcc3-043b9d39c6ed/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-25 18:18:13,366 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:18:13,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:18:13,366 INFO L85 PathProgramCache]: Analyzing trace with hash 589136355, now seen corresponding path program 1 times [2021-11-25 18:18:13,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:18:13,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163248654] [2021-11-25 18:18:13,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:18:13,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:18:13,507 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 18:18:13,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1921208620] [2021-11-25 18:18:13,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:18:13,508 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:18:13,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1b6329-cee7-435c-bcc3-043b9d39c6ed/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:18:13,512 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1b6329-cee7-435c-bcc3-043b9d39c6ed/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:18:13,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1b6329-cee7-435c-bcc3-043b9d39c6ed/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-25 18:18:14,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:18:14,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 3810 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 18:18:14,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:18:15,207 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 516 trivial. 0 not checked. [2021-11-25 18:18:15,207 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:18:15,207 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:18:15,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163248654] [2021-11-25 18:18:15,208 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 18:18:15,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1921208620] [2021-11-25 18:18:15,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1921208620] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:18:15,208 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:18:15,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 18:18:15,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029695349] [2021-11-25 18:18:15,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:18:15,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 18:18:15,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:18:15,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 18:18:15,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:18:15,211 INFO L87 Difference]: Start difference. First operand 3502 states and 5311 transitions. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-25 18:18:17,241 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:18:19,649 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:18:23,234 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:18:24,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:18:24,423 INFO L93 Difference]: Finished difference Result 8297 states and 12941 transitions. [2021-11-25 18:18:24,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:18:24,423 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 285 [2021-11-25 18:18:24,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:18:24,452 INFO L225 Difference]: With dead ends: 8297 [2021-11-25 18:18:24,452 INFO L226 Difference]: Without dead ends: 6491 [2021-11-25 18:18:24,460 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 283 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:18:24,461 INFO L933 BasicCegarLoop]: 1851 mSDtfsCounter, 1052 mSDsluCounter, 3520 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 103 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1188 SdHoareTripleChecker+Valid, 5065 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2021-11-25 18:18:24,461 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1188 Valid, 5065 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 507 Invalid, 3 Unknown, 0 Unchecked, 8.9s Time] [2021-11-25 18:18:24,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6491 states. [2021-11-25 18:18:24,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6491 to 3510. [2021-11-25 18:18:24,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3510 states, 2548 states have (on average 1.4603610675039247) internal successors, (3721), 2591 states have internal predecessors, (3721), 800 states have call successors, (800), 164 states have call predecessors, (800), 161 states have return successors, (798), 780 states have call predecessors, (798), 798 states have call successors, (798) [2021-11-25 18:18:24,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3510 states to 3510 states and 5319 transitions. [2021-11-25 18:18:24,715 INFO L78 Accepts]: Start accepts. Automaton has 3510 states and 5319 transitions. Word has length 285 [2021-11-25 18:18:24,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:18:24,716 INFO L470 AbstractCegarLoop]: Abstraction has 3510 states and 5319 transitions. [2021-11-25 18:18:24,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-25 18:18:24,716 INFO L276 IsEmpty]: Start isEmpty. Operand 3510 states and 5319 transitions. [2021-11-25 18:18:24,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2021-11-25 18:18:24,731 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:18:24,731 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:18:24,782 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1b6329-cee7-435c-bcc3-043b9d39c6ed/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-25 18:18:24,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1b6329-cee7-435c-bcc3-043b9d39c6ed/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:18:24,944 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:18:24,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:18:24,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1703352346, now seen corresponding path program 1 times [2021-11-25 18:18:24,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:18:24,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779570832] [2021-11-25 18:18:24,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:18:24,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:18:25,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:18:25,451 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 516 trivial. 0 not checked. [2021-11-25 18:18:25,452 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:18:25,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779570832] [2021-11-25 18:18:25,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779570832] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:18:25,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029310345] [2021-11-25 18:18:25,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:18:25,453 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:18:25,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1b6329-cee7-435c-bcc3-043b9d39c6ed/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:18:25,457 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1b6329-cee7-435c-bcc3-043b9d39c6ed/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:18:25,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1b6329-cee7-435c-bcc3-043b9d39c6ed/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-25 18:18:26,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:18:26,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 3856 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 18:18:26,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:18:27,370 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 436 trivial. 0 not checked. [2021-11-25 18:18:27,371 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:18:27,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029310345] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:18:27,371 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 18:18:27,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2021-11-25 18:18:27,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148574995] [2021-11-25 18:18:27,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:18:27,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:18:27,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:18:27,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:18:27,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-25 18:18:27,374 INFO L87 Difference]: Start difference. First operand 3510 states and 5319 transitions. Second operand has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 3 states have call successors, (32), 3 states have call predecessors, (32), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-25 18:18:29,406 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:18:32,719 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:18:41,449 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:18:45,097 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:18:47,266 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:18:47,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:18:47,673 INFO L93 Difference]: Finished difference Result 9623 states and 14692 transitions. [2021-11-25 18:18:47,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:18:47,674 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 3 states have call successors, (32), 3 states have call predecessors, (32), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 286 [2021-11-25 18:18:47,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:18:47,720 INFO L225 Difference]: With dead ends: 9623 [2021-11-25 18:18:47,720 INFO L226 Difference]: Without dead ends: 9615 [2021-11-25 18:18:47,726 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:18:47,727 INFO L933 BasicCegarLoop]: 2484 mSDtfsCounter, 3032 mSDsluCounter, 4562 mSDsCounter, 0 mSdLazyCounter, 2209 mSolverCounterSat, 111 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3081 SdHoareTripleChecker+Valid, 6522 SdHoareTripleChecker+Invalid, 2324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 2209 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.8s IncrementalHoareTripleChecker+Time [2021-11-25 18:18:47,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3081 Valid, 6522 Invalid, 2324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 2209 Invalid, 4 Unknown, 0 Unchecked, 19.8s Time] [2021-11-25 18:18:47,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9615 states. [2021-11-25 18:18:48,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9615 to 8681. [2021-11-25 18:18:48,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8681 states, 6304 states have (on average 1.4643083756345177) internal successors, (9231), 6429 states have internal predecessors, (9231), 1973 states have call successors, (1973), 408 states have call predecessors, (1973), 403 states have return successors, (1971), 1909 states have call predecessors, (1971), 1971 states have call successors, (1971) [2021-11-25 18:18:48,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8681 states to 8681 states and 13175 transitions. [2021-11-25 18:18:48,421 INFO L78 Accepts]: Start accepts. Automaton has 8681 states and 13175 transitions. Word has length 286 [2021-11-25 18:18:48,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:18:48,422 INFO L470 AbstractCegarLoop]: Abstraction has 8681 states and 13175 transitions. [2021-11-25 18:18:48,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 3 states have call successors, (32), 3 states have call predecessors, (32), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-25 18:18:48,423 INFO L276 IsEmpty]: Start isEmpty. Operand 8681 states and 13175 transitions. [2021-11-25 18:18:48,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2021-11-25 18:18:48,442 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:18:48,442 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:18:48,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1b6329-cee7-435c-bcc3-043b9d39c6ed/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-25 18:18:48,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1b6329-cee7-435c-bcc3-043b9d39c6ed/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:18:48,669 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:18:48,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:18:48,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1575587505, now seen corresponding path program 1 times [2021-11-25 18:18:48,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:18:48,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901806385] [2021-11-25 18:18:48,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:18:48,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:18:48,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:18:49,036 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 516 trivial. 0 not checked. [2021-11-25 18:18:49,037 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:18:49,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901806385] [2021-11-25 18:18:49,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901806385] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:18:49,037 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:18:49,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:18:49,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631933407] [2021-11-25 18:18:49,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:18:49,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:18:49,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:18:49,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:18:49,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:18:49,040 INFO L87 Difference]: Start difference. First operand 8681 states and 13175 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-25 18:18:51,069 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:18:52,961 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:18:56,513 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:18:57,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:18:57,153 INFO L93 Difference]: Finished difference Result 22542 states and 34823 transitions. [2021-11-25 18:18:57,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:18:57,154 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 287 [2021-11-25 18:18:57,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:18:57,236 INFO L225 Difference]: With dead ends: 22542 [2021-11-25 18:18:57,236 INFO L226 Difference]: Without dead ends: 13896 [2021-11-25 18:18:57,270 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:18:57,271 INFO L933 BasicCegarLoop]: 1528 mSDtfsCounter, 549 mSDsluCounter, 1345 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 661 SdHoareTripleChecker+Valid, 2744 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:18:57,271 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [661 Valid, 2744 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 276 Invalid, 2 Unknown, 0 Unchecked, 7.4s Time] [2021-11-25 18:18:57,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13896 states. [2021-11-25 18:18:58,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13896 to 8691. [2021-11-25 18:18:58,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8691 states, 6314 states have (on average 1.4635730123535002) internal successors, (9241), 6439 states have internal predecessors, (9241), 1973 states have call successors, (1973), 408 states have call predecessors, (1973), 403 states have return successors, (1971), 1909 states have call predecessors, (1971), 1971 states have call successors, (1971) [2021-11-25 18:18:58,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8691 states to 8691 states and 13185 transitions. [2021-11-25 18:18:58,288 INFO L78 Accepts]: Start accepts. Automaton has 8691 states and 13185 transitions. Word has length 287 [2021-11-25 18:18:58,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:18:58,289 INFO L470 AbstractCegarLoop]: Abstraction has 8691 states and 13185 transitions. [2021-11-25 18:18:58,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-25 18:18:58,289 INFO L276 IsEmpty]: Start isEmpty. Operand 8691 states and 13185 transitions. [2021-11-25 18:18:58,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2021-11-25 18:18:58,308 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:18:58,309 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:18:58,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-25 18:18:58,309 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:18:58,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:18:58,310 INFO L85 PathProgramCache]: Analyzing trace with hash 843414405, now seen corresponding path program 1 times [2021-11-25 18:18:58,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:18:58,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727112400] [2021-11-25 18:18:58,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:18:58,311 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:18:58,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:18:59,504 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 516 trivial. 0 not checked. [2021-11-25 18:18:59,504 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:18:59,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727112400] [2021-11-25 18:18:59,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727112400] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:18:59,505 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:18:59,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 18:18:59,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256495717] [2021-11-25 18:18:59,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:18:59,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 18:18:59,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:18:59,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 18:18:59,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-11-25 18:18:59,507 INFO L87 Difference]: Start difference. First operand 8691 states and 13185 transitions. Second operand has 12 states, 7 states have (on average 16.714285714285715) internal successors, (117), 9 states have internal predecessors, (117), 4 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (29), 5 states have call predecessors, (29), 4 states have call successors, (29) [2021-11-25 18:19:01,539 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:19:05,709 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:19:10,390 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:19:19,335 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:19:22,085 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:19:24,245 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:19:24,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:19:24,502 INFO L93 Difference]: Finished difference Result 21937 states and 33886 transitions. [2021-11-25 18:19:24,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-25 18:19:24,503 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 7 states have (on average 16.714285714285715) internal successors, (117), 9 states have internal predecessors, (117), 4 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (29), 5 states have call predecessors, (29), 4 states have call successors, (29) Word has length 288 [2021-11-25 18:19:24,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:19:24,625 INFO L225 Difference]: With dead ends: 21937 [2021-11-25 18:19:24,625 INFO L226 Difference]: Without dead ends: 13281 [2021-11-25 18:19:24,655 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2021-11-25 18:19:24,656 INFO L933 BasicCegarLoop]: 1574 mSDtfsCounter, 871 mSDsluCounter, 16631 mSDsCounter, 0 mSdLazyCounter, 1715 mSolverCounterSat, 152 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 16776 SdHoareTripleChecker+Invalid, 1871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 1715 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:19:24,656 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [923 Valid, 16776 Invalid, 1871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 1715 Invalid, 4 Unknown, 0 Unchecked, 24.0s Time] [2021-11-25 18:19:24,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13281 states. [2021-11-25 18:19:25,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13281 to 8731. [2021-11-25 18:19:25,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8731 states, 6344 states have (on average 1.4613808322824717) internal successors, (9271), 6469 states have internal predecessors, (9271), 1983 states have call successors, (1983), 408 states have call predecessors, (1983), 403 states have return successors, (1981), 1919 states have call predecessors, (1981), 1981 states have call successors, (1981) [2021-11-25 18:19:25,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8731 states to 8731 states and 13235 transitions. [2021-11-25 18:19:25,620 INFO L78 Accepts]: Start accepts. Automaton has 8731 states and 13235 transitions. Word has length 288 [2021-11-25 18:19:25,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:19:25,621 INFO L470 AbstractCegarLoop]: Abstraction has 8731 states and 13235 transitions. [2021-11-25 18:19:25,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 7 states have (on average 16.714285714285715) internal successors, (117), 9 states have internal predecessors, (117), 4 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (29), 5 states have call predecessors, (29), 4 states have call successors, (29) [2021-11-25 18:19:25,621 INFO L276 IsEmpty]: Start isEmpty. Operand 8731 states and 13235 transitions. [2021-11-25 18:19:25,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2021-11-25 18:19:25,640 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:19:25,641 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:19:25,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-25 18:19:25,641 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:19:25,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:19:25,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1639066039, now seen corresponding path program 1 times [2021-11-25 18:19:25,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:19:25,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574896261] [2021-11-25 18:19:25,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:19:25,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:19:25,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:19:26,132 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 516 trivial. 0 not checked. [2021-11-25 18:19:26,132 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:19:26,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574896261] [2021-11-25 18:19:26,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574896261] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:19:26,133 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:19:26,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:19:26,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910362853] [2021-11-25 18:19:26,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:19:26,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:19:26,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:19:26,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:19:26,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:19:26,135 INFO L87 Difference]: Start difference. First operand 8731 states and 13235 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-25 18:19:28,171 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:19:30,006 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:19:32,045 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:19:37,537 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:19:39,948 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:19:40,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:19:40,246 INFO L93 Difference]: Finished difference Result 22612 states and 34903 transitions. [2021-11-25 18:19:40,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:19:40,247 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) Word has length 292 [2021-11-25 18:19:40,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:19:40,297 INFO L225 Difference]: With dead ends: 22612 [2021-11-25 18:19:40,297 INFO L226 Difference]: Without dead ends: 13916 [2021-11-25 18:19:40,320 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:19:40,321 INFO L933 BasicCegarLoop]: 1554 mSDtfsCounter, 539 mSDsluCounter, 4735 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 0 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 650 SdHoareTripleChecker+Valid, 5879 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:19:40,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [650 Valid, 5879 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 566 Invalid, 4 Unknown, 0 Unchecked, 13.3s Time] [2021-11-25 18:19:40,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13916 states. [2021-11-25 18:19:41,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13916 to 8771. [2021-11-25 18:19:41,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8771 states, 6374 states have (on average 1.459209287731409) internal successors, (9301), 6499 states have internal predecessors, (9301), 1983 states have call successors, (1983), 408 states have call predecessors, (1983), 413 states have return successors, (2011), 1929 states have call predecessors, (2011), 1981 states have call successors, (2011) [2021-11-25 18:19:41,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8771 states to 8771 states and 13295 transitions. [2021-11-25 18:19:41,200 INFO L78 Accepts]: Start accepts. Automaton has 8771 states and 13295 transitions. Word has length 292 [2021-11-25 18:19:41,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:19:41,201 INFO L470 AbstractCegarLoop]: Abstraction has 8771 states and 13295 transitions. [2021-11-25 18:19:41,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-25 18:19:41,202 INFO L276 IsEmpty]: Start isEmpty. Operand 8771 states and 13295 transitions. [2021-11-25 18:19:41,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2021-11-25 18:19:41,225 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:19:41,225 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 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, 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, 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, 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, 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 18:19:41,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-25 18:19:41,226 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:19:41,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:19:41,227 INFO L85 PathProgramCache]: Analyzing trace with hash 923461111, now seen corresponding path program 1 times [2021-11-25 18:19:41,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:19:41,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828332799] [2021-11-25 18:19:41,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:19:41,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:19:41,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:19:42,313 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 516 trivial. 0 not checked. [2021-11-25 18:19:42,313 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:19:42,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828332799] [2021-11-25 18:19:42,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828332799] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:19:42,314 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:19:42,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 18:19:42,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106287550] [2021-11-25 18:19:42,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:19:42,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 18:19:42,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:19:42,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 18:19:42,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-11-25 18:19:42,316 INFO L87 Difference]: Start difference. First operand 8771 states and 13295 transitions. Second operand has 12 states, 7 states have (on average 17.428571428571427) internal successors, (122), 9 states have internal predecessors, (122), 4 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (30), 5 states have call predecessors, (30), 4 states have call successors, (30) [2021-11-25 18:19:44,353 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:19:47,748 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:19:50,448 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:19:53,076 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:19:55,846 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:20:03,928 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:20:06,311 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:20:08,321 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:20:10,329 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:20:13,120 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:20:15,277 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:20:15,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:20:15,547 INFO L93 Difference]: Finished difference Result 22097 states and 34106 transitions. [2021-11-25 18:20:15,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-25 18:20:15,548 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 7 states have (on average 17.428571428571427) internal successors, (122), 9 states have internal predecessors, (122), 4 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (30), 5 states have call predecessors, (30), 4 states have call successors, (30) Word has length 295 [2021-11-25 18:20:15,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:20:15,594 INFO L225 Difference]: With dead ends: 22097 [2021-11-25 18:20:15,594 INFO L226 Difference]: Without dead ends: 13361 [2021-11-25 18:20:15,618 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2021-11-25 18:20:15,619 INFO L933 BasicCegarLoop]: 1574 mSDtfsCounter, 873 mSDsluCounter, 16645 mSDsCounter, 0 mSdLazyCounter, 1734 mSolverCounterSat, 152 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 925 SdHoareTripleChecker+Valid, 16773 SdHoareTripleChecker+Invalid, 1893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 1734 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:20:15,619 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [925 Valid, 16773 Invalid, 1893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 1734 Invalid, 7 Unknown, 0 Unchecked, 32.1s Time] [2021-11-25 18:20:15,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13361 states. [2021-11-25 18:20:16,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13361 to 8771. [2021-11-25 18:20:16,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8771 states, 6374 states have (on average 1.459209287731409) internal successors, (9301), 6499 states have internal predecessors, (9301), 1983 states have call successors, (1983), 408 states have call predecessors, (1983), 413 states have return successors, (2011), 1929 states have call predecessors, (2011), 1981 states have call successors, (2011) [2021-11-25 18:20:16,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8771 states to 8771 states and 13295 transitions. [2021-11-25 18:20:16,386 INFO L78 Accepts]: Start accepts. Automaton has 8771 states and 13295 transitions. Word has length 295 [2021-11-25 18:20:16,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:20:16,387 INFO L470 AbstractCegarLoop]: Abstraction has 8771 states and 13295 transitions. [2021-11-25 18:20:16,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 7 states have (on average 17.428571428571427) internal successors, (122), 9 states have internal predecessors, (122), 4 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (30), 5 states have call predecessors, (30), 4 states have call successors, (30) [2021-11-25 18:20:16,387 INFO L276 IsEmpty]: Start isEmpty. Operand 8771 states and 13295 transitions. [2021-11-25 18:20:16,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2021-11-25 18:20:16,402 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:20:16,402 INFO L514 BasicCegarLoop]: trace histogram [11, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 3, 3, 3, 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, 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, 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, 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, 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 18:20:16,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-25 18:20:16,403 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:20:16,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:20:16,403 INFO L85 PathProgramCache]: Analyzing trace with hash -330637040, now seen corresponding path program 1 times [2021-11-25 18:20:16,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:20:16,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216394462] [2021-11-25 18:20:16,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:20:16,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:20:18,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:20:18,484 INFO L134 CoverageAnalysis]: Checked inductivity of 568 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 560 trivial. 0 not checked. [2021-11-25 18:20:18,485 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:20:18,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216394462] [2021-11-25 18:20:18,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216394462] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:20:18,485 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:20:18,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 18:20:18,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740869234] [2021-11-25 18:20:18,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:20:18,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 18:20:18,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:20:18,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 18:20:18,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:20:18,488 INFO L87 Difference]: Start difference. First operand 8771 states and 13295 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2021-11-25 18:20:20,475 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:20:22,332 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:20:27,005 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:20:27,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:20:27,409 INFO L93 Difference]: Finished difference Result 19992 states and 30625 transitions. [2021-11-25 18:20:27,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 18:20:27,410 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) Word has length 306 [2021-11-25 18:20:27,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:20:27,438 INFO L225 Difference]: With dead ends: 19992 [2021-11-25 18:20:27,438 INFO L226 Difference]: Without dead ends: 11256 [2021-11-25 18:20:27,458 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:20:27,459 INFO L933 BasicCegarLoop]: 1506 mSDtfsCounter, 547 mSDsluCounter, 2578 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 657 SdHoareTripleChecker+Valid, 3843 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:20:27,459 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [657 Valid, 3843 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 507 Invalid, 1 Unknown, 0 Unchecked, 8.3s Time] [2021-11-25 18:20:27,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11256 states. [2021-11-25 18:20:28,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11256 to 8781. [2021-11-25 18:20:28,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8781 states, 6384 states have (on average 1.4584899749373434) internal successors, (9311), 6509 states have internal predecessors, (9311), 1983 states have call successors, (1983), 408 states have call predecessors, (1983), 413 states have return successors, (2011), 1929 states have call predecessors, (2011), 1981 states have call successors, (2011) [2021-11-25 18:20:28,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8781 states to 8781 states and 13305 transitions. [2021-11-25 18:20:28,172 INFO L78 Accepts]: Start accepts. Automaton has 8781 states and 13305 transitions. Word has length 306 [2021-11-25 18:20:28,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:20:28,172 INFO L470 AbstractCegarLoop]: Abstraction has 8781 states and 13305 transitions. [2021-11-25 18:20:28,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2021-11-25 18:20:28,172 INFO L276 IsEmpty]: Start isEmpty. Operand 8781 states and 13305 transitions. [2021-11-25 18:20:28,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2021-11-25 18:20:28,180 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:20:28,180 INFO L514 BasicCegarLoop]: trace histogram [11, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 3, 3, 3, 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, 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, 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, 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, 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 18:20:28,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-25 18:20:28,180 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:20:28,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:20:28,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1103764927, now seen corresponding path program 1 times [2021-11-25 18:20:28,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:20:28,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77552846] [2021-11-25 18:20:28,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:20:28,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:20:29,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:20:30,065 INFO L134 CoverageAnalysis]: Checked inductivity of 569 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 539 trivial. 0 not checked. [2021-11-25 18:20:30,065 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:20:30,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77552846] [2021-11-25 18:20:30,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77552846] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:20:30,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962184362] [2021-11-25 18:20:30,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:20:30,067 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:20:30,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1b6329-cee7-435c-bcc3-043b9d39c6ed/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:20:30,072 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1b6329-cee7-435c-bcc3-043b9d39c6ed/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:20:30,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1b6329-cee7-435c-bcc3-043b9d39c6ed/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-25 18:20:31,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:20:31,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 4091 conjuncts, 433 conjunts are in the unsatisfiable core [2021-11-25 18:20:31,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:20:32,583 INFO L354 Elim1Store]: treesize reduction 636, result has 8.5 percent of original size [2021-11-25 18:20:32,584 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 27 case distinctions, treesize of input 112 treesize of output 139 [2021-11-25 18:20:33,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:20:33,369 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-25 18:20:33,386 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 26 treesize of output 16 [2021-11-25 18:20:33,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-25 18:20:33,795 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 6 treesize of output 5 [2021-11-25 18:20:33,807 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-25 18:20:34,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:20:34,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:20:34,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:20:34,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:20:34,049 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 18:20:34,050 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 14 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 53 [2021-11-25 18:20:34,073 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 25 [2021-11-25 18:20:34,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:20:34,769 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-25 18:20:34,784 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 26 treesize of output 16 [2021-11-25 18:20:34,873 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-25 18:20:35,027 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-25 18:20:35,033 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 6 treesize of output 5 [2021-11-25 18:20:35,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:20:35,207 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 25 [2021-11-25 18:20:35,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:20:35,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:20:35,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:20:35,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:20:35,263 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 18:20:35,264 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 14 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 53 [2021-11-25 18:20:35,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:20:35,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-25 18:20:35,996 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 26 treesize of output 16 [2021-11-25 18:20:36,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-25 18:20:36,297 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-25 18:20:36,301 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 6 treesize of output 5 [2021-11-25 18:20:36,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:20:36,447 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 25 [2021-11-25 18:20:36,593 INFO L354 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2021-11-25 18:20:36,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 37 treesize of output 69 [2021-11-25 18:20:37,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:20:37,313 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-25 18:20:37,328 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 26 treesize of output 16 [2021-11-25 18:20:37,415 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-25 18:20:37,551 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 6 treesize of output 5 [2021-11-25 18:20:37,555 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-25 18:20:37,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:20:37,718 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 25 [2021-11-25 18:20:37,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:20:37,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:20:37,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:20:37,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:20:37,768 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 18:20:37,768 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 14 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 53 [2021-11-25 18:20:38,429 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 26 treesize of output 16 [2021-11-25 18:20:38,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:20:38,446 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-25 18:20:38,518 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-25 18:20:38,693 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 6 treesize of output 5 [2021-11-25 18:20:38,700 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-25 18:20:38,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:20:38,878 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 25 [2021-11-25 18:20:38,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:20:38,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:20:38,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:20:38,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:20:38,939 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 18:20:38,940 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 14 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 53 [2021-11-25 18:20:39,619 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 26 treesize of output 16 [2021-11-25 18:20:39,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:20:39,639 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-25 18:20:39,738 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-25 18:20:40,074 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 6 treesize of output 5 [2021-11-25 18:20:40,079 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-25 18:20:40,423 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 18:20:40,423 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 25 treesize of output 29 [2021-11-25 18:20:40,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:20:40,432 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 15 treesize of output 7 [2021-11-25 18:20:40,618 INFO L354 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2021-11-25 18:20:40,618 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 37 treesize of output 69 [2021-11-25 18:20:41,864 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-11-25 18:20:41,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:20:41,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-25 18:20:41,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-25 18:20:42,058 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 6 treesize of output 5 [2021-11-25 18:20:42,063 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-25 18:20:42,372 INFO L354 Elim1Store]: treesize reduction 108, result has 33.7 percent of original size [2021-11-25 18:20:42,372 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 15 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 12 case distinctions, treesize of input 42 treesize of output 81 [2021-11-25 18:20:42,408 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 25 [2021-11-25 18:20:43,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:20:43,413 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-25 18:20:43,435 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-11-25 18:20:43,539 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-25 18:20:51,039 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 7 treesize of output 6 [2021-11-25 18:20:51,044 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-25 18:20:51,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:20:51,354 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 26 [2021-11-25 18:20:51,506 INFO L354 Elim1Store]: treesize reduction 108, result has 33.7 percent of original size [2021-11-25 18:20:51,506 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 15 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 12 case distinctions, treesize of input 42 treesize of output 81 [2021-11-25 18:20:52,952 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-11-25 18:20:52,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:20:52,970 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 15 treesize of output 7 [2021-11-25 18:21:01,145 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-11-25 18:21:01,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:21:01,165 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 15 treesize of output 7 [2021-11-25 18:21:11,144 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-11-25 18:21:11,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:21:11,170 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 15 treesize of output 7 [2021-11-25 18:21:21,841 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-11-25 18:21:21,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:21:21,873 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 15 treesize of output 7 [2021-11-25 18:21:33,702 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-11-25 18:21:33,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:21:33,753 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 15 treesize of output 7 [2021-11-25 18:21:46,813 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-11-25 18:21:46,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:21:46,850 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 15 treesize of output 7 [2021-11-25 18:22:02,479 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-11-25 18:22:02,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:02,518 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 15 treesize of output 7 [2021-11-25 18:22:28,562 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-11-25 18:22:28,584 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 22 [2021-11-25 18:22:28,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:28,599 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-25 18:22:28,642 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-25 18:22:28,818 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 6 treesize of output 5 [2021-11-25 18:22:28,823 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-25 18:22:29,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:29,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:29,116 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 8 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 34 [2021-11-25 18:22:29,295 INFO L354 Elim1Store]: treesize reduction 126, result has 33.7 percent of original size [2021-11-25 18:22:29,296 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 21 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 14 case distinctions, treesize of input 47 treesize of output 93 [2021-11-25 18:22:45,802 INFO L354 Elim1Store]: treesize reduction 587, result has 18.1 percent of original size [2021-11-25 18:22:45,803 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 11 case distinctions, treesize of input 56 treesize of output 159