./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/zonotope_3.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c021e7a-e77c-4539-9f01-1e18d4a83e3e/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c021e7a-e77c-4539-9f01-1e18d4a83e3e/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c021e7a-e77c-4539-9f01-1e18d4a83e3e/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c021e7a-e77c-4539-9f01-1e18d4a83e3e/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/zonotope_3.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c021e7a-e77c-4539-9f01-1e18d4a83e3e/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c021e7a-e77c-4539-9f01-1e18d4a83e3e/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8a7308dc5f86f1f4eda090a45a8f84359680ddfad7d17e2c5273bd494b2cbe5e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:10:07,354 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:10:07,357 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:10:07,414 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:10:07,414 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:10:07,418 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:10:07,420 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:10:07,424 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:10:07,426 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:10:07,432 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:10:07,433 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:10:07,435 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:10:07,435 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:10:07,437 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:10:07,440 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:10:07,448 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:10:07,449 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:10:07,450 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:10:07,453 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:10:07,461 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:10:07,463 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:10:07,464 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:10:07,467 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:10:07,468 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:10:07,477 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:10:07,478 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:10:07,478 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:10:07,480 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:10:07,481 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:10:07,482 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:10:07,483 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:10:07,484 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:10:07,486 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:10:07,487 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:10:07,489 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:10:07,489 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:10:07,490 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:10:07,490 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:10:07,490 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:10:07,491 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:10:07,492 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:10:07,493 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c021e7a-e77c-4539-9f01-1e18d4a83e3e/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 02:10:07,541 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:10:07,541 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:10:07,543 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:10:07,543 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:10:07,543 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:10:07,543 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:10:07,544 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 02:10:07,544 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:10:07,544 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:10:07,544 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 02:10:07,552 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 02:10:07,552 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:10:07,552 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 02:10:07,552 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 02:10:07,553 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 02:10:07,554 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:10:07,554 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 02:10:07,554 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 02:10:07,554 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 02:10:07,554 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:10:07,555 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:10:07,555 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:10:07,555 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:10:07,555 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:10:07,555 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 02:10:07,556 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:10:07,556 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:10:07,556 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:10:07,556 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:10:07,556 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:10:07,557 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:10:07,557 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:10:07,557 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:10:07,557 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:10:07,558 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 02:10:07,558 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 02:10:07,558 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:10:07,558 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:10:07,558 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:10:07,559 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_0c021e7a-e77c-4539-9f01-1e18d4a83e3e/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c021e7a-e77c-4539-9f01-1e18d4a83e3e/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8a7308dc5f86f1f4eda090a45a8f84359680ddfad7d17e2c5273bd494b2cbe5e [2021-11-07 02:10:07,875 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:10:07,909 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:10:07,911 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:10:07,912 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:10:07,913 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:10:07,913 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c021e7a-e77c-4539-9f01-1e18d4a83e3e/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/float-benchs/zonotope_3.c.v+lhb-reducer.c [2021-11-07 02:10:08,006 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c021e7a-e77c-4539-9f01-1e18d4a83e3e/bin/utaipan-UUZaoUuFF8/data/3d0eb9049/029c68298f824d0bad45eb8fbdd23b62/FLAGd163fc002 [2021-11-07 02:10:08,614 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:10:08,618 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c021e7a-e77c-4539-9f01-1e18d4a83e3e/sv-benchmarks/c/float-benchs/zonotope_3.c.v+lhb-reducer.c [2021-11-07 02:10:08,640 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c021e7a-e77c-4539-9f01-1e18d4a83e3e/bin/utaipan-UUZaoUuFF8/data/3d0eb9049/029c68298f824d0bad45eb8fbdd23b62/FLAGd163fc002 [2021-11-07 02:10:08,928 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c021e7a-e77c-4539-9f01-1e18d4a83e3e/bin/utaipan-UUZaoUuFF8/data/3d0eb9049/029c68298f824d0bad45eb8fbdd23b62 [2021-11-07 02:10:08,932 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:10:08,934 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:10:08,938 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:10:08,939 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:10:08,942 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:10:08,943 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:10:08" (1/1) ... [2021-11-07 02:10:08,944 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@321ce332 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:10:08, skipping insertion in model container [2021-11-07 02:10:08,945 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:10:08" (1/1) ... [2021-11-07 02:10:08,951 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:10:09,014 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:10:09,296 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c021e7a-e77c-4539-9f01-1e18d4a83e3e/sv-benchmarks/c/float-benchs/zonotope_3.c.v+lhb-reducer.c[12131,12144] [2021-11-07 02:10:09,308 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:10:09,319 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 02:10:09,389 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c021e7a-e77c-4539-9f01-1e18d4a83e3e/sv-benchmarks/c/float-benchs/zonotope_3.c.v+lhb-reducer.c[12131,12144] [2021-11-07 02:10:09,398 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:10:09,419 INFO L208 MainTranslator]: Completed translation [2021-11-07 02:10:09,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:10:09 WrapperNode [2021-11-07 02:10:09,420 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:10:09,436 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 02:10:09,436 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 02:10:09,436 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 02:10:09,443 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:10:09" (1/1) ... [2021-11-07 02:10:09,455 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:10:09" (1/1) ... [2021-11-07 02:10:09,499 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 02:10:09,500 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 02:10:09,500 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 02:10:09,501 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 02:10:09,509 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:10:09" (1/1) ... [2021-11-07 02:10:09,510 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:10:09" (1/1) ... [2021-11-07 02:10:09,514 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:10:09" (1/1) ... [2021-11-07 02:10:09,514 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:10:09" (1/1) ... [2021-11-07 02:10:09,529 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:10:09" (1/1) ... [2021-11-07 02:10:09,533 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:10:09" (1/1) ... [2021-11-07 02:10:09,539 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:10:09" (1/1) ... [2021-11-07 02:10:09,548 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 02:10:09,556 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 02:10:09,556 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 02:10:09,556 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 02:10:09,558 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:10:09" (1/1) ... [2021-11-07 02:10:09,566 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:10:09,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c021e7a-e77c-4539-9f01-1e18d4a83e3e/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:10:09,604 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c021e7a-e77c-4539-9f01-1e18d4a83e3e/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 02:10:09,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c021e7a-e77c-4539-9f01-1e18d4a83e3e/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 02:10:09,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 02:10:09,640 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 02:10:09,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 02:10:09,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 02:10:10,309 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 02:10:10,309 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-07 02:10:10,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:10:10 BoogieIcfgContainer [2021-11-07 02:10:10,312 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 02:10:10,313 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 02:10:10,314 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 02:10:10,317 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 02:10:10,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:10:08" (1/3) ... [2021-11-07 02:10:10,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fe5fb6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:10:10, skipping insertion in model container [2021-11-07 02:10:10,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:10:09" (2/3) ... [2021-11-07 02:10:10,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fe5fb6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:10:10, skipping insertion in model container [2021-11-07 02:10:10,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:10:10" (3/3) ... [2021-11-07 02:10:10,320 INFO L111 eAbstractionObserver]: Analyzing ICFG zonotope_3.c.v+lhb-reducer.c [2021-11-07 02:10:10,325 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 02:10:10,325 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 02:10:10,382 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 02:10:10,391 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 [2021-11-07 02:10:10,391 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 02:10:10,410 INFO L276 IsEmpty]: Start isEmpty. Operand has 52 states, 50 states have (on average 1.88) internal successors, (94), 51 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:10:10,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 02:10:10,417 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:10:10,418 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:10:10,419 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:10:10,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:10:10,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1601611879, now seen corresponding path program 1 times [2021-11-07 02:10:10,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 02:10:10,435 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273321985] [2021-11-07 02:10:10,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:10:10,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 02:10:10,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:10:10,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:10:10,812 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 02:10:10,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273321985] [2021-11-07 02:10:10,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273321985] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 02:10:10,814 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:10:10,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 02:10:10,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123042812] [2021-11-07 02:10:10,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 02:10:10,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 02:10:10,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 02:10:10,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 02:10:10,836 INFO L87 Difference]: Start difference. First operand has 52 states, 50 states have (on average 1.88) internal successors, (94), 51 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:10:10,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:10:10,909 INFO L93 Difference]: Finished difference Result 64 states and 103 transitions. [2021-11-07 02:10:10,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 02:10:10,910 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-07 02:10:10,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:10:10,919 INFO L225 Difference]: With dead ends: 64 [2021-11-07 02:10:10,919 INFO L226 Difference]: Without dead ends: 50 [2021-11-07 02:10:10,922 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 02:10:10,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-11-07 02:10:10,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-11-07 02:10:10,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.0816326530612246) internal successors, (53), 49 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:10:10,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions. [2021-11-07 02:10:10,961 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 53 transitions. Word has length 44 [2021-11-07 02:10:10,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:10:10,962 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 53 transitions. [2021-11-07 02:10:10,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:10:10,963 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 53 transitions. [2021-11-07 02:10:10,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 02:10:10,965 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:10:10,965 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:10:10,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 02:10:10,966 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:10:10,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:10:10,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1584601218, now seen corresponding path program 1 times [2021-11-07 02:10:10,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 02:10:10,970 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371106947] [2021-11-07 02:10:10,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:10:10,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 02:10:11,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:10:11,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:10:11,265 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 02:10:11,266 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371106947] [2021-11-07 02:10:11,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371106947] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 02:10:11,266 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:10:11,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-07 02:10:11,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621946884] [2021-11-07 02:10:11,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 02:10:11,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 02:10:11,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 02:10:11,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-07 02:10:11,272 INFO L87 Difference]: Start difference. First operand 50 states and 53 transitions. Second operand has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 11 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:10:11,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:10:11,398 INFO L93 Difference]: Finished difference Result 63 states and 69 transitions. [2021-11-07 02:10:11,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 02:10:11,400 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 11 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-07 02:10:11,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:10:11,404 INFO L225 Difference]: With dead ends: 63 [2021-11-07 02:10:11,404 INFO L226 Difference]: Without dead ends: 56 [2021-11-07 02:10:11,406 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-07 02:10:11,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-11-07 02:10:11,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 52. [2021-11-07 02:10:11,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.0784313725490196) internal successors, (55), 51 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:10:11,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2021-11-07 02:10:11,421 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 44 [2021-11-07 02:10:11,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:10:11,423 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2021-11-07 02:10:11,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 11 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:10:11,423 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2021-11-07 02:10:11,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-07 02:10:11,428 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:10:11,428 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 02:10:11,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 02:10:11,428 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:10:11,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:10:11,440 INFO L85 PathProgramCache]: Analyzing trace with hash 902581852, now seen corresponding path program 1 times [2021-11-07 02:10:11,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 02:10:11,441 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813711319] [2021-11-07 02:10:11,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:10:11,441 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 02:10:11,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:10:11,550 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:10:11,551 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 02:10:11,551 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813711319] [2021-11-07 02:10:11,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813711319] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 02:10:11,552 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:10:11,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 02:10:11,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448683204] [2021-11-07 02:10:11,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:10:11,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 02:10:11,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:10:11,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:10:11,557 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:10:11,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:10:11,574 INFO L93 Difference]: Finished difference Result 66 states and 72 transitions. [2021-11-07 02:10:11,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:10:11,577 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-11-07 02:10:11,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:10:11,579 INFO L225 Difference]: With dead ends: 66 [2021-11-07 02:10:11,580 INFO L226 Difference]: Without dead ends: 51 [2021-11-07 02:10:11,580 INFO L786 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 [2021-11-07 02:10:11,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-11-07 02:10:11,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-11-07 02:10:11,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.04) internal successors, (52), 50 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:10:11,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2021-11-07 02:10:11,593 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 49 [2021-11-07 02:10:11,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:10:11,596 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2021-11-07 02:10:11,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:10:11,596 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2021-11-07 02:10:11,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-07 02:10:11,598 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:10:11,598 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 02:10:11,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 02:10:11,599 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:10:11,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:10:11,600 INFO L85 PathProgramCache]: Analyzing trace with hash 449992577, now seen corresponding path program 1 times [2021-11-07 02:10:11,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 02:10:11,601 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076665051] [2021-11-07 02:10:11,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:10:11,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 02:10:11,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:10:11,792 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:10:11,792 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 02:10:11,793 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076665051] [2021-11-07 02:10:11,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076665051] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 02:10:11,793 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048943909] [2021-11-07 02:10:11,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:10:11,794 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:10:11,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c021e7a-e77c-4539-9f01-1e18d4a83e3e/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:10:11,799 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c021e7a-e77c-4539-9f01-1e18d4a83e3e/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:10:11,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c021e7a-e77c-4539-9f01-1e18d4a83e3e/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 02:10:11,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:10:11,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-07 02:10:11,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:10:12,172 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:10:12,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:10:12,529 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:10:12,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2048943909] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:10:12,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1599006101] [2021-11-07 02:10:12,564 INFO L159 IcfgInterpreter]: Started Sifa with 48 locations of interest [2021-11-07 02:10:12,564 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 02:10:12,572 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 02:10:12,576 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 02:10:12,577 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 02:10:12,664 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:10:12,672 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:10:12,673 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:10:12,674 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 02:10:12,675 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:10:12,675 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:10:12,676 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 02:10:12,694 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 290 [2021-11-07 02:10:12,721 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_9|], 21=[|v_#valid_10|]} [2021-11-07 02:10:12,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:12,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:12,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:12,757 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-07 02:10:12,757 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:10:12,758 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 02:10:12,759 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:10:12,759 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 02:10:12,760 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 02:10:12,762 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:10:12,796 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:10:12,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:12,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:12,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:12,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:12,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:12,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:12,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:12,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:12,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:12,828 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-07 02:10:12,829 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:10:12,831 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 02:10:12,832 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:10:12,833 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 02:10:12,833 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 02:10:12,834 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:10:12,883 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:10:12,896 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:10:12,909 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 262 [2021-11-07 02:10:12,911 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-07 02:10:12,912 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:287, output treesize:262 [2021-11-07 02:10:12,932 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.9 percent of original size [2021-11-07 02:10:12,947 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 262 [2021-11-07 02:10:12,965 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:10:12,979 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 262 [2021-11-07 02:10:13,002 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:10:13,018 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 265 [2021-11-07 02:10:13,042 INFO L180 QuantifierPusher]: treesize reduction 4, result has 98.7 percent of original size [2021-11-07 02:10:13,063 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 279 [2021-11-07 02:10:13,087 INFO L180 QuantifierPusher]: treesize reduction 5, result has 98.3 percent of original size [2021-11-07 02:10:13,102 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 274 [2021-11-07 02:10:13,121 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:10:13,137 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 274 [2021-11-07 02:10:13,155 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:10:13,170 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 277 [2021-11-07 02:10:13,193 INFO L180 QuantifierPusher]: treesize reduction 4, result has 98.8 percent of original size [2021-11-07 02:10:13,215 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 291 [2021-11-07 02:10:13,238 INFO L180 QuantifierPusher]: treesize reduction 5, result has 98.3 percent of original size [2021-11-07 02:10:13,253 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 286 [2021-11-07 02:10:13,284 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:10:13,306 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 286 [2021-11-07 02:10:13,329 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:10:13,348 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 289 [2021-11-07 02:10:13,372 INFO L180 QuantifierPusher]: treesize reduction 4, result has 98.8 percent of original size [2021-11-07 02:10:13,391 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 301 [2021-11-07 02:10:13,412 INFO L180 QuantifierPusher]: treesize reduction 3, result has 99.0 percent of original size [2021-11-07 02:10:13,427 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 298 [2021-11-07 02:10:13,449 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:10:13,464 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 298 [2021-11-07 02:10:13,489 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:10:13,506 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 301 [2021-11-07 02:10:13,535 INFO L180 QuantifierPusher]: treesize reduction 4, result has 98.8 percent of original size [2021-11-07 02:10:13,556 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 313 [2021-11-07 02:10:13,581 INFO L180 QuantifierPusher]: treesize reduction 3, result has 99.1 percent of original size [2021-11-07 02:10:13,597 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 310 [2021-11-07 02:10:13,617 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:10:13,633 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 310 [2021-11-07 02:10:13,654 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:10:13,676 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 313 [2021-11-07 02:10:13,704 INFO L180 QuantifierPusher]: treesize reduction 4, result has 98.9 percent of original size [2021-11-07 02:10:13,734 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 325 [2021-11-07 02:10:13,765 INFO L180 QuantifierPusher]: treesize reduction 3, result has 99.1 percent of original size [2021-11-07 02:10:13,789 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 322 [2021-11-07 02:10:13,817 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:10:13,840 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 322 [2021-11-07 02:10:13,869 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:10:13,890 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 325 [2021-11-07 02:10:13,919 INFO L180 QuantifierPusher]: treesize reduction 4, result has 98.9 percent of original size [2021-11-07 02:10:13,944 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 337 [2021-11-07 02:10:13,965 INFO L180 QuantifierPusher]: treesize reduction 3, result has 99.1 percent of original size [2021-11-07 02:10:13,987 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 334 [2021-11-07 02:10:14,010 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:10:14,032 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 334 [2021-11-07 02:10:14,060 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:10:14,085 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 337 [2021-11-07 02:10:14,130 INFO L180 QuantifierPusher]: treesize reduction 4, result has 99.0 percent of original size [2021-11-07 02:10:14,161 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 351 [2021-11-07 02:10:14,194 INFO L180 QuantifierPusher]: treesize reduction 5, result has 98.6 percent of original size [2021-11-07 02:10:14,218 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 346 [2021-11-07 02:10:14,251 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:10:14,267 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 346 [2021-11-07 02:10:14,293 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:10:14,310 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 349 [2021-11-07 02:10:14,335 INFO L180 QuantifierPusher]: treesize reduction 4, result has 99.0 percent of original size [2021-11-07 02:10:14,353 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 361 [2021-11-07 02:10:14,376 INFO L180 QuantifierPusher]: treesize reduction 3, result has 99.2 percent of original size [2021-11-07 02:10:14,390 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 358 [2021-11-07 02:10:14,409 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:10:14,423 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 358 [2021-11-07 02:10:14,443 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:10:14,457 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 361 [2021-11-07 02:10:14,489 INFO L180 QuantifierPusher]: treesize reduction 4, result has 99.0 percent of original size [2021-11-07 02:10:14,508 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 373 [2021-11-07 02:10:14,529 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:10:14,544 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 373 [2021-11-07 02:10:14,566 INFO L180 QuantifierPusher]: treesize reduction 3, result has 99.2 percent of original size [2021-11-07 02:10:14,581 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 370 [2021-11-07 02:10:14,600 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:10:14,614 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 370 [2021-11-07 02:10:14,632 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:10:14,646 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 373 [2021-11-07 02:10:14,667 INFO L180 QuantifierPusher]: treesize reduction 4, result has 99.1 percent of original size [2021-11-07 02:10:14,687 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 385 [2021-11-07 02:10:14,706 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:10:14,723 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 385 [2021-11-07 02:10:14,744 INFO L180 QuantifierPusher]: treesize reduction 3, result has 99.2 percent of original size [2021-11-07 02:10:14,771 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 379 [2021-11-07 02:10:14,791 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:10:14,809 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 379 [2021-11-07 02:10:14,819 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:10:14,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:10:15,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:10:15,358 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:10:15,395 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 919 [2021-11-07 02:10:15,443 INFO L180 QuantifierPusher]: treesize reduction 4, result has 99.6 percent of original size [2021-11-07 02:10:15,527 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:10:15,564 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:10:15,596 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 694 [2021-11-07 02:10:15,677 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 886 [2021-11-07 02:10:15,713 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:10:15,721 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:10:15,741 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:10:15,763 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 681 [2021-11-07 02:10:15,852 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 877 [2021-11-07 02:10:15,887 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:10:15,928 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 874 [2021-11-07 02:10:15,960 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:10:15,988 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 874 [2021-11-07 02:10:16,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:10:16,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:10:16,361 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:10:16,364 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:10:16,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:10:16,371 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:10:16,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:10:16,424 INFO L180 QuantifierPusher]: treesize reduction 120, result has 48.1 percent of original size [2021-11-07 02:10:16,428 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 109 [2021-11-07 02:10:16,435 INFO L180 QuantifierPusher]: treesize reduction 4, result has 97.5 percent of original size [2021-11-07 02:10:16,441 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 145 [2021-11-07 02:10:16,447 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:10:16,453 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 145 [2021-11-07 02:10:16,460 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:10:16,465 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 142 [2021-11-07 02:10:16,470 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:10:16,475 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 142 [2021-11-07 02:10:16,490 INFO L180 QuantifierPusher]: treesize reduction 120, result has 48.1 percent of original size [2021-11-07 02:10:16,494 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 109 [2021-11-07 02:10:16,501 INFO L180 QuantifierPusher]: treesize reduction 4, result has 97.5 percent of original size [2021-11-07 02:10:16,507 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 145 [2021-11-07 02:10:16,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:10:16,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:10:16,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:10:16,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:10:16,808 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:10:16,813 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 145 [2021-11-07 02:10:16,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:10:16,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:10:16,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:10:16,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:10:17,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:10:17,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:10:17,223 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:10:17,254 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:10:17,414 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:10:17,438 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 854 [2021-11-07 02:10:17,506 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:10:17,511 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 142 [2021-11-07 02:10:17,514 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:10:17,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:10:17,630 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:10:17,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:10:17,816 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 02:10:46,472 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 02:10:46,472 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 02:10:46,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2021-11-07 02:10:46,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508195976] [2021-11-07 02:10:46,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-07 02:10:46,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 02:10:46,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-07 02:10:46,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=872, Invalid=2550, Unknown=0, NotChecked=0, Total=3422 [2021-11-07 02:10:46,476 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand has 25 states, 25 states have (on average 3.92) internal successors, (98), 24 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:10:46,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:10:46,617 INFO L93 Difference]: Finished difference Result 118 states and 131 transitions. [2021-11-07 02:10:46,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-07 02:10:46,617 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.92) internal successors, (98), 24 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-11-07 02:10:46,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:10:46,619 INFO L225 Difference]: With dead ends: 118 [2021-11-07 02:10:46,619 INFO L226 Difference]: Without dead ends: 111 [2021-11-07 02:10:46,621 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2047 ImplicationChecksByTransitivity, 28.8s TimeCoverageRelationStatistics Valid=872, Invalid=2550, Unknown=0, NotChecked=0, Total=3422 [2021-11-07 02:10:46,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-11-07 02:10:46,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2021-11-07 02:10:46,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 1.018181818181818) internal successors, (112), 110 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:10:46,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 112 transitions. [2021-11-07 02:10:46,644 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 112 transitions. Word has length 49 [2021-11-07 02:10:46,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:10:46,644 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 112 transitions. [2021-11-07 02:10:46,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.92) internal successors, (98), 24 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:10:46,645 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 112 transitions. [2021-11-07 02:10:46,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-07 02:10:46,653 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:10:46,654 INFO L513 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:10:46,690 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c021e7a-e77c-4539-9f01-1e18d4a83e3e/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-07 02:10:46,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c021e7a-e77c-4539-9f01-1e18d4a83e3e/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-11-07 02:10:46,872 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:10:46,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:10:46,872 INFO L85 PathProgramCache]: Analyzing trace with hash -844379071, now seen corresponding path program 2 times [2021-11-07 02:10:46,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 02:10:46,872 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832659062] [2021-11-07 02:10:46,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:10:46,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 02:10:46,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:10:47,284 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:10:47,284 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 02:10:47,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832659062] [2021-11-07 02:10:47,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832659062] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 02:10:47,285 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369832622] [2021-11-07 02:10:47,285 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 02:10:47,285 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:10:47,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c021e7a-e77c-4539-9f01-1e18d4a83e3e/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:10:47,286 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c021e7a-e77c-4539-9f01-1e18d4a83e3e/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:10:47,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c021e7a-e77c-4539-9f01-1e18d4a83e3e/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 02:10:47,565 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2021-11-07 02:10:47,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 02:10:47,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 1016 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-07 02:10:47,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:10:47,935 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:10:47,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:10:48,902 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:10:48,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1369832622] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:10:48,902 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2090985245] [2021-11-07 02:10:48,906 INFO L159 IcfgInterpreter]: Started Sifa with 48 locations of interest [2021-11-07 02:10:48,906 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 02:10:48,907 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 02:10:48,907 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 02:10:48,907 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 02:10:48,937 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:10:48,938 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:10:48,939 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:10:48,939 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 02:10:48,940 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:10:48,940 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:10:48,940 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 02:10:48,948 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 290 [2021-11-07 02:10:48,962 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_10|], 21=[|v_#valid_11|]} [2021-11-07 02:10:48,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:48,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:48,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:48,987 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-07 02:10:48,988 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:10:48,991 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 02:10:48,992 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:10:48,993 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 02:10:48,993 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 02:10:48,993 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:10:49,021 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:10:49,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:49,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:49,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:49,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:49,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:49,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:49,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:49,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:49,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:49,054 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-07 02:10:49,055 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:10:49,057 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 02:10:49,057 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:10:49,058 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 02:10:49,058 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 02:10:49,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:10:49,088 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:10:49,095 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:10:49,101 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 262 [2021-11-07 02:10:49,102 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-07 02:10:49,103 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:287, output treesize:262 [2021-11-07 02:10:49,113 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.9 percent of original size [2021-11-07 02:10:49,120 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 262 [2021-11-07 02:10:49,130 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:10:49,137 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 262 [2021-11-07 02:10:49,148 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:10:49,155 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 265 [2021-11-07 02:10:49,173 INFO L180 QuantifierPusher]: treesize reduction 4, result has 98.7 percent of original size [2021-11-07 02:10:49,184 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 279 [2021-11-07 02:10:49,198 INFO L180 QuantifierPusher]: treesize reduction 5, result has 98.3 percent of original size [2021-11-07 02:10:49,214 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 274 [2021-11-07 02:10:49,225 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:10:49,232 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 274 [2021-11-07 02:10:49,244 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:10:49,252 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 277 [2021-11-07 02:10:49,267 INFO L180 QuantifierPusher]: treesize reduction 4, result has 98.8 percent of original size [2021-11-07 02:10:49,280 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 291 [2021-11-07 02:10:49,296 INFO L180 QuantifierPusher]: treesize reduction 5, result has 98.3 percent of original size [2021-11-07 02:10:49,327 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 286 [2021-11-07 02:10:49,339 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:10:49,347 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 286 [2021-11-07 02:10:49,362 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:10:49,371 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 289 [2021-11-07 02:10:49,387 INFO L180 QuantifierPusher]: treesize reduction 4, result has 98.8 percent of original size [2021-11-07 02:10:49,399 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 303 [2021-11-07 02:10:49,414 INFO L180 QuantifierPusher]: treesize reduction 5, result has 98.4 percent of original size [2021-11-07 02:10:49,423 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 298 [2021-11-07 02:10:49,439 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:10:49,447 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 298 [2021-11-07 02:10:49,460 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:10:49,469 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 301 [2021-11-07 02:10:49,486 INFO L180 QuantifierPusher]: treesize reduction 4, result has 98.8 percent of original size [2021-11-07 02:10:49,499 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 315 [2021-11-07 02:10:49,514 INFO L180 QuantifierPusher]: treesize reduction 5, result has 98.4 percent of original size [2021-11-07 02:10:49,524 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 310 [2021-11-07 02:10:49,538 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:10:49,548 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 310 [2021-11-07 02:10:49,562 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:10:49,572 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 313 [2021-11-07 02:10:49,590 INFO L180 QuantifierPusher]: treesize reduction 4, result has 98.9 percent of original size [2021-11-07 02:10:49,608 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 327 [2021-11-07 02:10:49,624 INFO L180 QuantifierPusher]: treesize reduction 5, result has 98.5 percent of original size [2021-11-07 02:10:49,635 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 322 [2021-11-07 02:10:49,651 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:10:49,662 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 322 [2021-11-07 02:10:49,677 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:10:49,688 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 325 [2021-11-07 02:10:49,706 INFO L180 QuantifierPusher]: treesize reduction 4, result has 98.9 percent of original size [2021-11-07 02:10:49,720 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 337 [2021-11-07 02:10:49,738 INFO L180 QuantifierPusher]: treesize reduction 3, result has 99.1 percent of original size [2021-11-07 02:10:49,749 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 334 [2021-11-07 02:10:49,764 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:10:49,775 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 334 [2021-11-07 02:10:49,791 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:10:49,803 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 337 [2021-11-07 02:10:49,822 INFO L180 QuantifierPusher]: treesize reduction 4, result has 99.0 percent of original size [2021-11-07 02:10:49,859 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 349 [2021-11-07 02:10:49,876 INFO L180 QuantifierPusher]: treesize reduction 3, result has 99.2 percent of original size [2021-11-07 02:10:49,888 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 346 [2021-11-07 02:10:49,905 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:10:49,917 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 346 [2021-11-07 02:10:49,934 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:10:49,945 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 349 [2021-11-07 02:10:49,966 INFO L180 QuantifierPusher]: treesize reduction 4, result has 99.0 percent of original size [2021-11-07 02:10:49,982 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 361 [2021-11-07 02:10:50,002 INFO L180 QuantifierPusher]: treesize reduction 3, result has 99.2 percent of original size [2021-11-07 02:10:50,016 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 358 [2021-11-07 02:10:50,035 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:10:50,047 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 358 [2021-11-07 02:10:50,066 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:10:50,078 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 361 [2021-11-07 02:10:50,095 INFO L180 QuantifierPusher]: treesize reduction 4, result has 99.0 percent of original size [2021-11-07 02:10:50,113 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 373 [2021-11-07 02:10:50,125 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:10:50,146 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 373 [2021-11-07 02:10:50,170 INFO L180 QuantifierPusher]: treesize reduction 3, result has 99.2 percent of original size [2021-11-07 02:10:50,184 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 370 [2021-11-07 02:10:50,202 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:10:50,221 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 370 [2021-11-07 02:10:50,237 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:10:50,255 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 373 [2021-11-07 02:10:50,275 INFO L180 QuantifierPusher]: treesize reduction 4, result has 99.1 percent of original size [2021-11-07 02:10:50,298 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 385 [2021-11-07 02:10:50,316 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:10:50,332 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 385 [2021-11-07 02:10:50,370 INFO L180 QuantifierPusher]: treesize reduction 3, result has 99.2 percent of original size [2021-11-07 02:10:50,384 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 379 [2021-11-07 02:10:50,398 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:10:50,412 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 379 [2021-11-07 02:10:50,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:10:50,525 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:10:50,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:10:50,813 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:10:50,842 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 919 [2021-11-07 02:10:50,880 INFO L180 QuantifierPusher]: treesize reduction 4, result has 99.6 percent of original size [2021-11-07 02:10:50,924 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:10:50,947 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:10:50,975 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 694 [2021-11-07 02:10:51,048 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 886 [2021-11-07 02:10:51,082 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:10:51,087 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:10:51,104 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:10:51,127 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 681 [2021-11-07 02:10:51,211 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 877 [2021-11-07 02:10:51,241 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:10:51,280 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 874 [2021-11-07 02:10:51,311 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:10:51,338 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 874 [2021-11-07 02:10:51,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:10:51,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:10:51,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:10:51,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:10:51,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:10:51,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:10:51,606 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:10:51,629 INFO L180 QuantifierPusher]: treesize reduction 120, result has 48.1 percent of original size [2021-11-07 02:10:51,631 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 109 [2021-11-07 02:10:51,634 INFO L180 QuantifierPusher]: treesize reduction 4, result has 97.5 percent of original size [2021-11-07 02:10:51,638 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 145 [2021-11-07 02:10:51,641 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:10:51,646 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 145 [2021-11-07 02:10:51,650 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:10:51,655 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 142 [2021-11-07 02:10:51,658 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:10:51,662 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 142 [2021-11-07 02:10:51,673 INFO L180 QuantifierPusher]: treesize reduction 120, result has 48.1 percent of original size [2021-11-07 02:10:51,676 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 109 [2021-11-07 02:10:51,682 INFO L180 QuantifierPusher]: treesize reduction 4, result has 97.5 percent of original size [2021-11-07 02:10:51,686 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 145 [2021-11-07 02:10:51,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:10:51,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:10:51,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:10:51,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:10:51,922 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:10:51,926 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 145 [2021-11-07 02:10:51,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:10:51,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:10:52,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:10:52,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:10:52,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:10:52,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:10:52,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:10:52,284 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:10:52,379 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:10:52,397 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 854 [2021-11-07 02:10:52,445 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:10:52,449 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 142 [2021-11-07 02:10:52,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:10:52,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:10:52,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:10:52,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:10:52,661 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 02:11:20,778 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 02:11:20,779 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 02:11:20,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 48 [2021-11-07 02:11:20,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890708799] [2021-11-07 02:11:20,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2021-11-07 02:11:20,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 02:11:20,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-11-07 02:11:20,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2372, Invalid=4434, Unknown=0, NotChecked=0, Total=6806 [2021-11-07 02:11:20,786 INFO L87 Difference]: Start difference. First operand 111 states and 112 transitions. Second operand has 49 states, 49 states have (on average 4.448979591836735) internal successors, (218), 48 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:11:21,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:11:21,070 INFO L93 Difference]: Finished difference Result 238 states and 263 transitions. [2021-11-07 02:11:21,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-11-07 02:11:21,071 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 4.448979591836735) internal successors, (218), 48 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-11-07 02:11:21,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:11:21,077 INFO L225 Difference]: With dead ends: 238 [2021-11-07 02:11:21,077 INFO L226 Difference]: Without dead ends: 231 [2021-11-07 02:11:21,080 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 267 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3667 ImplicationChecksByTransitivity, 28.9s TimeCoverageRelationStatistics Valid=2372, Invalid=4434, Unknown=0, NotChecked=0, Total=6806 [2021-11-07 02:11:21,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2021-11-07 02:11:21,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2021-11-07 02:11:21,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 230 states have (on average 1.008695652173913) internal successors, (232), 230 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:11:21,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 232 transitions. [2021-11-07 02:11:21,105 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 232 transitions. Word has length 109 [2021-11-07 02:11:21,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:11:21,106 INFO L470 AbstractCegarLoop]: Abstraction has 231 states and 232 transitions. [2021-11-07 02:11:21,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 4.448979591836735) internal successors, (218), 48 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:11:21,107 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 232 transitions. [2021-11-07 02:11:21,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-11-07 02:11:21,116 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:11:21,117 INFO L513 BasicCegarLoop]: trace histogram [38, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:11:21,151 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c021e7a-e77c-4539-9f01-1e18d4a83e3e/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-07 02:11:21,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c021e7a-e77c-4539-9f01-1e18d4a83e3e/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-11-07 02:11:21,344 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:11:21,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:11:21,344 INFO L85 PathProgramCache]: Analyzing trace with hash -588917311, now seen corresponding path program 3 times [2021-11-07 02:11:21,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 02:11:21,344 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370974157] [2021-11-07 02:11:21,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:11:21,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 02:11:21,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:11:22,641 INFO L134 CoverageAnalysis]: Checked inductivity of 3404 backedges. 0 proven. 3404 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:11:22,642 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 02:11:22,642 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370974157] [2021-11-07 02:11:22,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370974157] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 02:11:22,642 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812791067] [2021-11-07 02:11:22,642 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 02:11:22,643 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:11:22,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c021e7a-e77c-4539-9f01-1e18d4a83e3e/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:11:22,647 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c021e7a-e77c-4539-9f01-1e18d4a83e3e/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:11:22,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c021e7a-e77c-4539-9f01-1e18d4a83e3e/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-07 02:11:23,099 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 02:11:23,099 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 02:11:23,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 2024 conjuncts, 48 conjunts are in the unsatisfiable core [2021-11-07 02:11:23,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:11:23,800 INFO L134 CoverageAnalysis]: Checked inductivity of 3404 backedges. 0 proven. 3404 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:11:23,800 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:11:26,714 INFO L134 CoverageAnalysis]: Checked inductivity of 3404 backedges. 0 proven. 3404 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:11:26,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [812791067] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:11:26,714 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [955197512] [2021-11-07 02:11:26,719 INFO L159 IcfgInterpreter]: Started Sifa with 48 locations of interest [2021-11-07 02:11:26,720 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 02:11:26,720 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 02:11:26,720 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 02:11:26,721 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 02:11:26,747 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:11:26,749 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:11:26,750 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:11:26,750 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 02:11:26,751 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:11:26,751 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:11:26,752 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 02:11:26,758 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 290 [2021-11-07 02:11:26,768 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_11|], 21=[|v_#valid_12|]} [2021-11-07 02:11:26,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:11:26,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:11:26,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:11:26,788 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-07 02:11:26,788 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:11:26,789 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 02:11:26,789 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:11:26,790 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 02:11:26,790 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 02:11:26,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:11:26,807 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:11:26,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:11:26,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:11:26,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:11:26,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:11:26,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:11:26,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:11:26,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:11:26,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:11:26,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:11:26,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-07 02:11:26,833 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:11:26,835 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 02:11:26,837 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:11:26,838 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 02:11:26,838 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 02:11:26,839 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:11:26,856 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:11:26,862 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:11:26,868 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 262 [2021-11-07 02:11:26,869 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-07 02:11:26,870 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:287, output treesize:262 [2021-11-07 02:11:26,879 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.9 percent of original size [2021-11-07 02:11:26,887 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 262 [2021-11-07 02:11:26,897 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:11:26,904 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 262 [2021-11-07 02:11:26,917 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:11:26,924 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 265 [2021-11-07 02:11:26,937 INFO L180 QuantifierPusher]: treesize reduction 4, result has 98.7 percent of original size [2021-11-07 02:11:26,947 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 279 [2021-11-07 02:11:26,959 INFO L180 QuantifierPusher]: treesize reduction 5, result has 98.3 percent of original size [2021-11-07 02:11:26,967 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 274 [2021-11-07 02:11:26,978 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:11:26,985 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 274 [2021-11-07 02:11:26,996 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:11:27,003 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 277 [2021-11-07 02:11:27,017 INFO L180 QuantifierPusher]: treesize reduction 4, result has 98.8 percent of original size [2021-11-07 02:11:27,028 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 289 [2021-11-07 02:11:27,041 INFO L180 QuantifierPusher]: treesize reduction 3, result has 99.0 percent of original size [2021-11-07 02:11:27,049 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 286 [2021-11-07 02:11:27,061 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:11:27,069 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 286 [2021-11-07 02:11:27,081 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:11:27,089 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 289 [2021-11-07 02:11:27,108 INFO L180 QuantifierPusher]: treesize reduction 4, result has 98.8 percent of original size [2021-11-07 02:11:27,120 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 301 [2021-11-07 02:11:27,135 INFO L180 QuantifierPusher]: treesize reduction 3, result has 99.0 percent of original size [2021-11-07 02:11:27,145 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 298 [2021-11-07 02:11:27,158 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:11:27,166 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 298 [2021-11-07 02:11:27,179 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:11:27,188 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 301 [2021-11-07 02:11:27,204 INFO L180 QuantifierPusher]: treesize reduction 4, result has 98.8 percent of original size [2021-11-07 02:11:27,216 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 315 [2021-11-07 02:11:27,228 INFO L180 QuantifierPusher]: treesize reduction 5, result has 98.4 percent of original size [2021-11-07 02:11:27,238 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 310 [2021-11-07 02:11:27,252 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:11:27,261 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 310 [2021-11-07 02:11:27,277 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:11:27,285 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 313 [2021-11-07 02:11:27,303 INFO L180 QuantifierPusher]: treesize reduction 4, result has 98.9 percent of original size [2021-11-07 02:11:27,315 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 327 [2021-11-07 02:11:27,331 INFO L180 QuantifierPusher]: treesize reduction 5, result has 98.5 percent of original size [2021-11-07 02:11:27,340 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 322 [2021-11-07 02:11:27,349 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:11:27,355 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 322 [2021-11-07 02:11:27,364 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:11:27,370 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 325 [2021-11-07 02:11:27,390 INFO L180 QuantifierPusher]: treesize reduction 4, result has 98.9 percent of original size [2021-11-07 02:11:27,405 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 337 [2021-11-07 02:11:27,421 INFO L180 QuantifierPusher]: treesize reduction 3, result has 99.1 percent of original size [2021-11-07 02:11:27,451 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 334 [2021-11-07 02:11:27,468 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:11:27,479 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 334 [2021-11-07 02:11:27,495 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:11:27,506 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 337 [2021-11-07 02:11:27,524 INFO L180 QuantifierPusher]: treesize reduction 4, result has 99.0 percent of original size [2021-11-07 02:11:27,539 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 349 [2021-11-07 02:11:27,555 INFO L180 QuantifierPusher]: treesize reduction 3, result has 99.2 percent of original size [2021-11-07 02:11:27,568 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 346 [2021-11-07 02:11:27,587 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:11:27,599 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 346 [2021-11-07 02:11:27,616 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:11:27,628 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 349 [2021-11-07 02:11:27,648 INFO L180 QuantifierPusher]: treesize reduction 4, result has 99.0 percent of original size [2021-11-07 02:11:27,661 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 361 [2021-11-07 02:11:27,679 INFO L180 QuantifierPusher]: treesize reduction 3, result has 99.2 percent of original size [2021-11-07 02:11:27,690 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 358 [2021-11-07 02:11:27,707 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:11:27,719 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 358 [2021-11-07 02:11:27,736 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:11:27,747 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 361 [2021-11-07 02:11:27,769 INFO L180 QuantifierPusher]: treesize reduction 4, result has 99.0 percent of original size [2021-11-07 02:11:27,797 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 373 [2021-11-07 02:11:27,814 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:11:27,826 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 373 [2021-11-07 02:11:27,845 INFO L180 QuantifierPusher]: treesize reduction 3, result has 99.2 percent of original size [2021-11-07 02:11:27,858 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 370 [2021-11-07 02:11:27,875 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:11:27,887 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 370 [2021-11-07 02:11:27,901 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:11:27,914 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 373 [2021-11-07 02:11:27,949 INFO L180 QuantifierPusher]: treesize reduction 4, result has 99.1 percent of original size [2021-11-07 02:11:27,971 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 385 [2021-11-07 02:11:27,989 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:11:28,006 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 385 [2021-11-07 02:11:28,032 INFO L180 QuantifierPusher]: treesize reduction 3, result has 99.2 percent of original size [2021-11-07 02:11:28,046 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 379 [2021-11-07 02:11:28,056 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:11:28,069 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 379 [2021-11-07 02:11:28,077 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:11:28,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:11:28,238 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:11:28,352 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:11:28,370 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 919 [2021-11-07 02:11:28,391 INFO L180 QuantifierPusher]: treesize reduction 4, result has 99.6 percent of original size [2021-11-07 02:11:28,428 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:11:28,451 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:11:28,468 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 694 [2021-11-07 02:11:28,544 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 886 [2021-11-07 02:11:28,576 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:11:28,580 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:11:28,598 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:11:28,649 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 681 [2021-11-07 02:11:28,702 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 877 [2021-11-07 02:11:28,719 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:11:28,735 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 874 [2021-11-07 02:11:28,752 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:11:28,766 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 874 [2021-11-07 02:11:28,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:11:28,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:11:28,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:11:28,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:11:28,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:11:28,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:11:28,954 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:11:28,971 INFO L180 QuantifierPusher]: treesize reduction 120, result has 48.1 percent of original size [2021-11-07 02:11:28,973 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 109 [2021-11-07 02:11:28,975 INFO L180 QuantifierPusher]: treesize reduction 4, result has 97.5 percent of original size [2021-11-07 02:11:28,978 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 145 [2021-11-07 02:11:28,980 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:11:28,986 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 145 [2021-11-07 02:11:28,990 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:11:28,995 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 142 [2021-11-07 02:11:28,999 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:11:29,002 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 142 [2021-11-07 02:11:29,013 INFO L180 QuantifierPusher]: treesize reduction 120, result has 48.1 percent of original size [2021-11-07 02:11:29,015 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 109 [2021-11-07 02:11:29,020 INFO L180 QuantifierPusher]: treesize reduction 4, result has 97.5 percent of original size [2021-11-07 02:11:29,024 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 145 [2021-11-07 02:11:29,027 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:11:29,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:11:29,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:11:29,171 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:11:29,267 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:11:29,271 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 145 [2021-11-07 02:11:29,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:11:29,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:11:29,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:11:29,373 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:11:29,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:11:29,474 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:11:29,507 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:11:29,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:11:29,622 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:11:29,634 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 854 [2021-11-07 02:11:29,677 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:11:29,680 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 142 [2021-11-07 02:11:29,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:11:29,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:11:29,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:11:29,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:11:29,835 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 02:11:58,992 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 02:11:58,992 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 02:11:58,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 96 [2021-11-07 02:11:58,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040788540] [2021-11-07 02:11:58,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2021-11-07 02:11:58,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 02:11:58,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2021-11-07 02:11:59,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7100, Invalid=9930, Unknown=0, NotChecked=0, Total=17030 [2021-11-07 02:11:59,002 INFO L87 Difference]: Start difference. First operand 231 states and 232 transitions. Second operand has 97 states, 97 states have (on average 4.721649484536083) internal successors, (458), 96 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:11:59,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:11:59,653 INFO L93 Difference]: Finished difference Result 478 states and 527 transitions. [2021-11-07 02:11:59,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-11-07 02:11:59,654 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 4.721649484536083) internal successors, (458), 96 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 229 [2021-11-07 02:11:59,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:11:59,657 INFO L225 Difference]: With dead ends: 478 [2021-11-07 02:11:59,657 INFO L226 Difference]: Without dead ends: 471 [2021-11-07 02:11:59,663 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 733 GetRequests, 603 SyntacticMatches, 1 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6907 ImplicationChecksByTransitivity, 32.3s TimeCoverageRelationStatistics Valid=7100, Invalid=9930, Unknown=0, NotChecked=0, Total=17030 [2021-11-07 02:11:59,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2021-11-07 02:11:59,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 471. [2021-11-07 02:11:59,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 470 states have (on average 1.004255319148936) internal successors, (472), 470 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:11:59,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 472 transitions. [2021-11-07 02:11:59,687 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 472 transitions. Word has length 229 [2021-11-07 02:11:59,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:11:59,687 INFO L470 AbstractCegarLoop]: Abstraction has 471 states and 472 transitions. [2021-11-07 02:11:59,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 4.721649484536083) internal successors, (458), 96 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:11:59,688 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 472 transitions. [2021-11-07 02:11:59,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2021-11-07 02:11:59,697 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:11:59,697 INFO L513 BasicCegarLoop]: trace histogram [86, 85, 85, 85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:11:59,730 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c021e7a-e77c-4539-9f01-1e18d4a83e3e/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-07 02:11:59,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c021e7a-e77c-4539-9f01-1e18d4a83e3e/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:11:59,918 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:11:59,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:11:59,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1162450751, now seen corresponding path program 4 times [2021-11-07 02:11:59,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 02:11:59,919 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992708123] [2021-11-07 02:11:59,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:11:59,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 02:12:00,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:12:03,755 INFO L134 CoverageAnalysis]: Checked inductivity of 18020 backedges. 0 proven. 18020 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:12:03,755 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 02:12:03,755 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992708123] [2021-11-07 02:12:03,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992708123] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 02:12:03,755 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199735609] [2021-11-07 02:12:03,756 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 02:12:03,756 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:12:03,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c021e7a-e77c-4539-9f01-1e18d4a83e3e/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:12:03,757 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c021e7a-e77c-4539-9f01-1e18d4a83e3e/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:12:03,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c021e7a-e77c-4539-9f01-1e18d4a83e3e/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-07 02:12:04,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:12:04,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 4040 conjuncts, 96 conjunts are in the unsatisfiable core [2021-11-07 02:12:04,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:12:05,915 INFO L134 CoverageAnalysis]: Checked inductivity of 18020 backedges. 0 proven. 18020 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:12:05,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:12:15,801 INFO L134 CoverageAnalysis]: Checked inductivity of 18020 backedges. 0 proven. 18020 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:12:15,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1199735609] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:12:15,801 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1604791104] [2021-11-07 02:12:15,805 INFO L159 IcfgInterpreter]: Started Sifa with 48 locations of interest [2021-11-07 02:12:15,805 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 02:12:15,805 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 02:12:15,806 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 02:12:15,806 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 02:12:15,833 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:12:15,835 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:12:15,835 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:12:15,836 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 02:12:15,836 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:12:15,836 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:12:15,837 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 02:12:15,842 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 290 [2021-11-07 02:12:15,849 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_12|], 21=[|v_#valid_13|]} [2021-11-07 02:12:15,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:12:15,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:12:15,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:12:15,865 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-07 02:12:15,866 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:12:15,866 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 02:12:15,867 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:12:15,867 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 02:12:15,868 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 02:12:15,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:12:15,880 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:12:15,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:12:15,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:12:15,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:12:15,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:12:15,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:12:15,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:12:15,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:12:15,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:12:15,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:12:15,900 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-07 02:12:15,900 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:12:15,902 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 02:12:15,902 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:12:15,902 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 02:12:15,902 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 02:12:15,903 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:12:15,914 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:12:15,917 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:12:15,920 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 262 [2021-11-07 02:12:15,921 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-07 02:12:15,921 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:287, output treesize:262 [2021-11-07 02:12:15,940 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.9 percent of original size [2021-11-07 02:12:15,946 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 262 [2021-11-07 02:12:15,956 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:12:15,962 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 262 [2021-11-07 02:12:15,973 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:12:15,976 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 265 [2021-11-07 02:12:15,984 INFO L180 QuantifierPusher]: treesize reduction 4, result has 98.7 percent of original size [2021-11-07 02:12:15,990 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 279 [2021-11-07 02:12:15,997 INFO L180 QuantifierPusher]: treesize reduction 5, result has 98.3 percent of original size [2021-11-07 02:12:16,006 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 274 [2021-11-07 02:12:16,016 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:12:16,023 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 274 [2021-11-07 02:12:16,032 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:12:16,036 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 277 [2021-11-07 02:12:16,044 INFO L180 QuantifierPusher]: treesize reduction 4, result has 98.8 percent of original size [2021-11-07 02:12:16,051 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 291 [2021-11-07 02:12:16,058 INFO L180 QuantifierPusher]: treesize reduction 5, result has 98.3 percent of original size [2021-11-07 02:12:16,062 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 286 [2021-11-07 02:12:16,069 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:12:16,080 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 286 [2021-11-07 02:12:16,092 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:12:16,097 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 289 [2021-11-07 02:12:16,105 INFO L180 QuantifierPusher]: treesize reduction 4, result has 98.8 percent of original size [2021-11-07 02:12:16,113 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 303 [2021-11-07 02:12:16,120 INFO L180 QuantifierPusher]: treesize reduction 5, result has 98.4 percent of original size [2021-11-07 02:12:16,125 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 298 [2021-11-07 02:12:16,132 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:12:16,137 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 298 [2021-11-07 02:12:16,157 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:12:16,166 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 301 [2021-11-07 02:12:16,183 INFO L180 QuantifierPusher]: treesize reduction 4, result has 98.8 percent of original size [2021-11-07 02:12:16,194 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 313 [2021-11-07 02:12:16,208 INFO L180 QuantifierPusher]: treesize reduction 3, result has 99.1 percent of original size [2021-11-07 02:12:16,216 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 310 [2021-11-07 02:12:16,224 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:12:16,229 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 310 [2021-11-07 02:12:16,237 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:12:16,242 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 313 [2021-11-07 02:12:16,252 INFO L180 QuantifierPusher]: treesize reduction 4, result has 98.9 percent of original size [2021-11-07 02:12:16,260 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 327 [2021-11-07 02:12:16,271 INFO L180 QuantifierPusher]: treesize reduction 5, result has 98.5 percent of original size [2021-11-07 02:12:16,295 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 322 [2021-11-07 02:12:16,304 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:12:16,309 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 322 [2021-11-07 02:12:16,318 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:12:16,323 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 325 [2021-11-07 02:12:16,333 INFO L180 QuantifierPusher]: treesize reduction 4, result has 98.9 percent of original size [2021-11-07 02:12:16,342 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 339 [2021-11-07 02:12:16,352 INFO L180 QuantifierPusher]: treesize reduction 5, result has 98.6 percent of original size [2021-11-07 02:12:16,358 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 334 [2021-11-07 02:12:16,367 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:12:16,373 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 334 [2021-11-07 02:12:16,382 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:12:16,388 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 337 [2021-11-07 02:12:16,400 INFO L180 QuantifierPusher]: treesize reduction 4, result has 99.0 percent of original size [2021-11-07 02:12:16,408 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 349 [2021-11-07 02:12:16,418 INFO L180 QuantifierPusher]: treesize reduction 3, result has 99.2 percent of original size [2021-11-07 02:12:16,425 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 346 [2021-11-07 02:12:16,435 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:12:16,441 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 346 [2021-11-07 02:12:16,450 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:12:16,456 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 349 [2021-11-07 02:12:16,468 INFO L180 QuantifierPusher]: treesize reduction 4, result has 99.0 percent of original size [2021-11-07 02:12:16,479 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 361 [2021-11-07 02:12:16,490 INFO L180 QuantifierPusher]: treesize reduction 3, result has 99.2 percent of original size [2021-11-07 02:12:16,497 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 358 [2021-11-07 02:12:16,507 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:12:16,513 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 358 [2021-11-07 02:12:16,523 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:12:16,530 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 361 [2021-11-07 02:12:16,542 INFO L180 QuantifierPusher]: treesize reduction 4, result has 99.0 percent of original size [2021-11-07 02:12:16,555 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 373 [2021-11-07 02:12:16,565 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:12:16,573 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 373 [2021-11-07 02:12:16,584 INFO L180 QuantifierPusher]: treesize reduction 3, result has 99.2 percent of original size [2021-11-07 02:12:16,591 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 370 [2021-11-07 02:12:16,601 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:12:16,608 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 370 [2021-11-07 02:12:16,617 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:12:16,624 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 373 [2021-11-07 02:12:16,638 INFO L180 QuantifierPusher]: treesize reduction 4, result has 99.1 percent of original size [2021-11-07 02:12:16,649 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 385 [2021-11-07 02:12:16,658 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:12:16,666 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 385 [2021-11-07 02:12:16,675 INFO L180 QuantifierPusher]: treesize reduction 3, result has 99.2 percent of original size [2021-11-07 02:12:16,702 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 379 [2021-11-07 02:12:16,710 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:12:16,718 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 379 [2021-11-07 02:12:16,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:12:16,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:12:16,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:12:16,934 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:12:16,955 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 919 [2021-11-07 02:12:16,986 INFO L180 QuantifierPusher]: treesize reduction 4, result has 99.6 percent of original size [2021-11-07 02:12:17,009 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:12:17,025 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:12:17,042 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 694 [2021-11-07 02:12:17,117 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 886 [2021-11-07 02:12:17,150 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:12:17,153 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:12:17,172 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:12:17,192 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 681 [2021-11-07 02:12:17,259 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 877 [2021-11-07 02:12:17,278 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:12:17,292 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 874 [2021-11-07 02:12:17,309 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:12:17,322 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 874 [2021-11-07 02:12:17,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:12:17,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:12:17,511 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:12:17,513 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:12:17,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:12:17,517 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:12:17,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:12:17,546 INFO L180 QuantifierPusher]: treesize reduction 120, result has 48.1 percent of original size [2021-11-07 02:12:17,547 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 109 [2021-11-07 02:12:17,550 INFO L180 QuantifierPusher]: treesize reduction 4, result has 97.5 percent of original size [2021-11-07 02:12:17,553 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 145 [2021-11-07 02:12:17,575 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:12:17,577 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 145 [2021-11-07 02:12:17,579 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:12:17,582 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 142 [2021-11-07 02:12:17,584 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:12:17,586 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 142 [2021-11-07 02:12:17,595 INFO L180 QuantifierPusher]: treesize reduction 120, result has 48.1 percent of original size [2021-11-07 02:12:17,596 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 109 [2021-11-07 02:12:17,600 INFO L180 QuantifierPusher]: treesize reduction 4, result has 97.5 percent of original size [2021-11-07 02:12:17,602 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 145 [2021-11-07 02:12:17,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:12:17,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:12:17,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:12:17,690 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:12:17,762 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:12:17,764 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 145 [2021-11-07 02:12:17,766 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:12:17,795 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:12:17,831 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:12:17,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:12:17,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:12:17,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:12:18,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:12:18,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:12:18,130 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:12:18,153 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 854 [2021-11-07 02:12:18,215 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:12:18,217 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 142 [2021-11-07 02:12:18,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:12:18,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:12:18,280 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:12:18,298 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:12:18,360 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 02:12:51,117 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 02:12:51,117 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 02:12:51,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96, 96] total 192 [2021-11-07 02:12:51,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305230301] [2021-11-07 02:12:51,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 193 states [2021-11-07 02:12:51,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 02:12:51,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2021-11-07 02:12:51,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23468, Invalid=27834, Unknown=0, NotChecked=0, Total=51302 [2021-11-07 02:12:51,129 INFO L87 Difference]: Start difference. First operand 471 states and 472 transitions. Second operand has 193 states, 193 states have (on average 4.860103626943006) internal successors, (938), 192 states have internal predecessors, (938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:12:52,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:12:52,996 INFO L93 Difference]: Finished difference Result 958 states and 1055 transitions. [2021-11-07 02:12:52,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2021-11-07 02:12:52,997 INFO L78 Accepts]: Start accepts. Automaton has has 193 states, 193 states have (on average 4.860103626943006) internal successors, (938), 192 states have internal predecessors, (938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 469 [2021-11-07 02:12:52,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:12:53,002 INFO L225 Difference]: With dead ends: 958 [2021-11-07 02:12:53,002 INFO L226 Difference]: Without dead ends: 951 [2021-11-07 02:12:53,007 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1501 GetRequests, 1275 SyntacticMatches, 1 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13387 ImplicationChecksByTransitivity, 44.5s TimeCoverageRelationStatistics Valid=23468, Invalid=27834, Unknown=0, NotChecked=0, Total=51302 [2021-11-07 02:12:53,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 951 states. [2021-11-07 02:12:53,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 951 to 951. [2021-11-07 02:12:53,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 951 states, 950 states have (on average 1.0021052631578948) internal successors, (952), 950 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:12:53,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 951 states to 951 states and 952 transitions. [2021-11-07 02:12:53,040 INFO L78 Accepts]: Start accepts. Automaton has 951 states and 952 transitions. Word has length 469 [2021-11-07 02:12:53,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:12:53,041 INFO L470 AbstractCegarLoop]: Abstraction has 951 states and 952 transitions. [2021-11-07 02:12:53,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 193 states, 193 states have (on average 4.860103626943006) internal successors, (938), 192 states have internal predecessors, (938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:12:53,042 INFO L276 IsEmpty]: Start isEmpty. Operand 951 states and 952 transitions. [2021-11-07 02:12:53,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 950 [2021-11-07 02:12:53,078 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:12:53,078 INFO L513 BasicCegarLoop]: trace histogram [182, 181, 181, 181, 181, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:12:53,114 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c021e7a-e77c-4539-9f01-1e18d4a83e3e/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-07 02:12:53,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c021e7a-e77c-4539-9f01-1e18d4a83e3e/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:12:53,292 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:12:53,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:12:53,292 INFO L85 PathProgramCache]: Analyzing trace with hash -37122367, now seen corresponding path program 5 times [2021-11-07 02:12:53,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 02:12:53,292 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568276162] [2021-11-07 02:12:53,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:12:53,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 02:12:53,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:13:07,007 INFO L134 CoverageAnalysis]: Checked inductivity of 81812 backedges. 0 proven. 81812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:13:07,007 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 02:13:07,007 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568276162] [2021-11-07 02:13:07,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568276162] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 02:13:07,008 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471674399] [2021-11-07 02:13:07,008 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 02:13:07,008 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:13:07,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c021e7a-e77c-4539-9f01-1e18d4a83e3e/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:13:07,028 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c021e7a-e77c-4539-9f01-1e18d4a83e3e/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:13:07,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c021e7a-e77c-4539-9f01-1e18d4a83e3e/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-07 02:13:11,061 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 182 check-sat command(s) [2021-11-07 02:13:11,061 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 02:13:11,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 8072 conjuncts, 192 conjunts are in the unsatisfiable core [2021-11-07 02:13:11,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:13:13,516 INFO L134 CoverageAnalysis]: Checked inductivity of 81812 backedges. 0 proven. 81812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:13:13,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:13:50,514 INFO L134 CoverageAnalysis]: Checked inductivity of 81812 backedges. 0 proven. 81812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:13:50,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471674399] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:13:50,515 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [147242779] [2021-11-07 02:13:50,518 INFO L159 IcfgInterpreter]: Started Sifa with 48 locations of interest [2021-11-07 02:13:50,518 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 02:13:50,519 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 02:13:50,519 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 02:13:50,519 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 02:13:50,540 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:13:50,541 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:13:50,541 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:13:50,542 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 02:13:50,542 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:13:50,543 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:13:50,543 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 02:13:50,598 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 290 [2021-11-07 02:13:50,602 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_13|], 21=[|v_#valid_14|]} [2021-11-07 02:13:50,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:13:50,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:13:50,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:13:50,620 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-07 02:13:50,620 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:13:50,621 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 02:13:50,621 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:13:50,622 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 02:13:50,622 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 02:13:50,622 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:13:50,639 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:13:50,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:13:50,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:13:50,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:13:50,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:13:50,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:13:50,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:13:50,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:13:50,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:13:50,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:13:50,663 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-07 02:13:50,664 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:13:50,666 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 02:13:50,667 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:13:50,667 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 02:13:50,667 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 02:13:50,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:13:50,681 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:13:50,684 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:13:50,687 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 262 [2021-11-07 02:13:50,688 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-07 02:13:50,688 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:287, output treesize:262 [2021-11-07 02:13:50,694 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.9 percent of original size [2021-11-07 02:13:50,698 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 262 [2021-11-07 02:13:50,704 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:13:50,708 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 262 [2021-11-07 02:13:50,715 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:13:50,718 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 265 [2021-11-07 02:13:50,726 INFO L180 QuantifierPusher]: treesize reduction 4, result has 98.7 percent of original size [2021-11-07 02:13:50,732 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 279 [2021-11-07 02:13:50,739 INFO L180 QuantifierPusher]: treesize reduction 5, result has 98.3 percent of original size [2021-11-07 02:13:50,743 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 274 [2021-11-07 02:13:50,749 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:13:50,753 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 274 [2021-11-07 02:13:50,759 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:13:50,764 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 277 [2021-11-07 02:13:50,772 INFO L180 QuantifierPusher]: treesize reduction 4, result has 98.8 percent of original size [2021-11-07 02:13:50,778 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 291 [2021-11-07 02:13:50,786 INFO L180 QuantifierPusher]: treesize reduction 5, result has 98.3 percent of original size [2021-11-07 02:13:50,790 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 286 [2021-11-07 02:13:50,797 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:13:50,801 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 286 [2021-11-07 02:13:50,808 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:13:50,825 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 289 [2021-11-07 02:13:50,840 INFO L180 QuantifierPusher]: treesize reduction 4, result has 98.8 percent of original size [2021-11-07 02:13:50,852 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 301 [2021-11-07 02:13:50,865 INFO L180 QuantifierPusher]: treesize reduction 3, result has 99.0 percent of original size [2021-11-07 02:13:50,873 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 298 [2021-11-07 02:13:50,885 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:13:50,893 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 298 [2021-11-07 02:13:50,906 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:13:50,915 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 301 [2021-11-07 02:13:50,930 INFO L180 QuantifierPusher]: treesize reduction 4, result has 98.8 percent of original size [2021-11-07 02:13:50,941 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 315 [2021-11-07 02:13:50,955 INFO L180 QuantifierPusher]: treesize reduction 5, result has 98.4 percent of original size [2021-11-07 02:13:50,964 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 310 [2021-11-07 02:13:50,976 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:13:50,984 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 310 [2021-11-07 02:13:50,997 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:13:51,005 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 313 [2021-11-07 02:13:51,021 INFO L180 QuantifierPusher]: treesize reduction 4, result has 98.9 percent of original size [2021-11-07 02:13:51,033 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 327 [2021-11-07 02:13:51,048 INFO L180 QuantifierPusher]: treesize reduction 5, result has 98.5 percent of original size [2021-11-07 02:13:51,057 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 322 [2021-11-07 02:13:51,071 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:13:51,081 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 322 [2021-11-07 02:13:51,094 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:13:51,104 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 325 [2021-11-07 02:13:51,121 INFO L180 QuantifierPusher]: treesize reduction 4, result has 98.9 percent of original size [2021-11-07 02:13:51,134 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 339 [2021-11-07 02:13:51,150 INFO L180 QuantifierPusher]: treesize reduction 5, result has 98.6 percent of original size [2021-11-07 02:13:51,160 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 334 [2021-11-07 02:13:51,174 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:13:51,185 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 334 [2021-11-07 02:13:51,200 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:13:51,210 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 337 [2021-11-07 02:13:51,228 INFO L180 QuantifierPusher]: treesize reduction 4, result has 99.0 percent of original size [2021-11-07 02:13:51,244 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 349 [2021-11-07 02:13:51,261 INFO L180 QuantifierPusher]: treesize reduction 3, result has 99.2 percent of original size [2021-11-07 02:13:51,272 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 346 [2021-11-07 02:13:51,287 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:13:51,298 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 346 [2021-11-07 02:13:51,313 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:13:51,324 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 349 [2021-11-07 02:13:51,344 INFO L180 QuantifierPusher]: treesize reduction 4, result has 99.0 percent of original size [2021-11-07 02:13:51,358 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 361 [2021-11-07 02:13:51,375 INFO L180 QuantifierPusher]: treesize reduction 3, result has 99.2 percent of original size [2021-11-07 02:13:51,387 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 358 [2021-11-07 02:13:51,404 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:13:51,415 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 358 [2021-11-07 02:13:51,432 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:13:51,444 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 361 [2021-11-07 02:13:51,464 INFO L180 QuantifierPusher]: treesize reduction 4, result has 99.0 percent of original size [2021-11-07 02:13:51,477 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 373 [2021-11-07 02:13:51,487 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:13:51,494 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 373 [2021-11-07 02:13:51,506 INFO L180 QuantifierPusher]: treesize reduction 3, result has 99.2 percent of original size [2021-11-07 02:13:51,513 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 370 [2021-11-07 02:13:51,523 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:13:51,530 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 370 [2021-11-07 02:13:51,539 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:13:51,546 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 373 [2021-11-07 02:13:51,556 INFO L180 QuantifierPusher]: treesize reduction 4, result has 99.1 percent of original size [2021-11-07 02:13:51,567 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 385 [2021-11-07 02:13:51,576 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:13:51,584 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 385 [2021-11-07 02:13:51,594 INFO L180 QuantifierPusher]: treesize reduction 3, result has 99.2 percent of original size [2021-11-07 02:13:51,602 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 379 [2021-11-07 02:13:51,610 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:13:51,618 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 379 [2021-11-07 02:13:51,622 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:13:51,682 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:13:51,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:13:51,880 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:13:51,896 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 919 [2021-11-07 02:13:51,917 INFO L180 QuantifierPusher]: treesize reduction 4, result has 99.6 percent of original size [2021-11-07 02:13:51,939 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:13:51,966 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:13:51,985 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 694 [2021-11-07 02:13:52,048 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 886 [2021-11-07 02:13:52,079 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:13:52,082 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:13:52,095 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:13:52,107 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 681 [2021-11-07 02:13:52,166 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 877 [2021-11-07 02:13:52,183 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:13:52,197 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 874 [2021-11-07 02:13:52,213 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:13:52,227 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 874 [2021-11-07 02:13:52,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:13:52,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:13:52,386 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:13:52,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:13:52,394 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:13:52,398 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:13:52,409 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:13:52,422 INFO L180 QuantifierPusher]: treesize reduction 120, result has 48.1 percent of original size [2021-11-07 02:13:52,424 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 109 [2021-11-07 02:13:52,426 INFO L180 QuantifierPusher]: treesize reduction 4, result has 97.5 percent of original size [2021-11-07 02:13:52,429 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 145 [2021-11-07 02:13:52,431 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:13:52,433 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 145 [2021-11-07 02:13:52,435 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:13:52,438 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 142 [2021-11-07 02:13:52,439 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:13:52,441 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 142 [2021-11-07 02:13:52,448 INFO L180 QuantifierPusher]: treesize reduction 120, result has 48.1 percent of original size [2021-11-07 02:13:52,449 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 109 [2021-11-07 02:13:52,452 INFO L180 QuantifierPusher]: treesize reduction 4, result has 97.5 percent of original size [2021-11-07 02:13:52,455 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 145 [2021-11-07 02:13:52,457 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:13:52,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:13:52,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:13:52,533 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:13:52,646 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:13:52,649 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 145 [2021-11-07 02:13:52,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:13:52,679 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:13:52,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:13:52,726 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:13:52,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:13:52,819 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:13:52,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:13:52,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:13:52,953 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:13:52,965 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 854 [2021-11-07 02:13:53,008 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:13:53,010 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 142 [2021-11-07 02:13:53,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:13:53,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:13:53,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:13:53,090 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:13:53,152 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 02:14:32,219 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 02:14:32,219 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 02:14:32,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [192, 192, 192] total 384 [2021-11-07 02:14:32,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948814548] [2021-11-07 02:14:32,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 385 states [2021-11-07 02:14:32,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 02:14:32,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 385 interpolants. [2021-11-07 02:14:32,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83852, Invalid=91290, Unknown=0, NotChecked=0, Total=175142 [2021-11-07 02:14:32,248 INFO L87 Difference]: Start difference. First operand 951 states and 952 transitions. Second operand has 385 states, 385 states have (on average 4.92987012987013) internal successors, (1898), 384 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:14:41,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:14:41,775 INFO L93 Difference]: Finished difference Result 1918 states and 2111 transitions. [2021-11-07 02:14:41,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2021-11-07 02:14:41,776 INFO L78 Accepts]: Start accepts. Automaton has has 385 states, 385 states have (on average 4.92987012987013) internal successors, (1898), 384 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 949 [2021-11-07 02:14:41,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:14:41,788 INFO L225 Difference]: With dead ends: 1918 [2021-11-07 02:14:41,788 INFO L226 Difference]: Without dead ends: 1911 [2021-11-07 02:14:41,801 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3037 GetRequests, 2619 SyntacticMatches, 1 SemanticMatches, 417 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26347 ImplicationChecksByTransitivity, 85.6s TimeCoverageRelationStatistics Valid=83852, Invalid=91290, Unknown=0, NotChecked=0, Total=175142 [2021-11-07 02:14:41,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1911 states. [2021-11-07 02:14:41,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1911 to 1911. [2021-11-07 02:14:41,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1911 states, 1910 states have (on average 1.0010471204188482) internal successors, (1912), 1910 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:14:41,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1911 states to 1911 states and 1912 transitions. [2021-11-07 02:14:41,864 INFO L78 Accepts]: Start accepts. Automaton has 1911 states and 1912 transitions. Word has length 949 [2021-11-07 02:14:41,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:14:41,866 INFO L470 AbstractCegarLoop]: Abstraction has 1911 states and 1912 transitions. [2021-11-07 02:14:41,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 385 states, 385 states have (on average 4.92987012987013) internal successors, (1898), 384 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:14:41,867 INFO L276 IsEmpty]: Start isEmpty. Operand 1911 states and 1912 transitions. [2021-11-07 02:14:41,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1910 [2021-11-07 02:14:41,893 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:14:41,894 INFO L513 BasicCegarLoop]: trace histogram [374, 373, 373, 373, 373, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:14:41,928 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c021e7a-e77c-4539-9f01-1e18d4a83e3e/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-07 02:14:42,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c021e7a-e77c-4539-9f01-1e18d4a83e3e/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:14:42,100 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:14:42,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:14:42,100 INFO L85 PathProgramCache]: Analyzing trace with hash -239609151, now seen corresponding path program 6 times [2021-11-07 02:14:42,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 02:14:42,101 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673760611] [2021-11-07 02:14:42,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:14:42,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 02:14:43,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:15:33,273 INFO L134 CoverageAnalysis]: Checked inductivity of 347636 backedges. 0 proven. 347636 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:15:33,273 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 02:15:33,274 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673760611] [2021-11-07 02:15:33,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673760611] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 02:15:33,274 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165282602] [2021-11-07 02:15:33,274 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 02:15:33,274 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:15:33,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c021e7a-e77c-4539-9f01-1e18d4a83e3e/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:15:33,275 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c021e7a-e77c-4539-9f01-1e18d4a83e3e/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:15:33,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c021e7a-e77c-4539-9f01-1e18d4a83e3e/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-07 02:15:36,706 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 02:15:36,707 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 02:15:36,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 16136 conjuncts, 384 conjunts are in the unsatisfiable core [2021-11-07 02:15:36,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:15:41,709 INFO L134 CoverageAnalysis]: Checked inductivity of 347636 backedges. 0 proven. 347636 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:15:41,709 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:18:09,433 INFO L134 CoverageAnalysis]: Checked inductivity of 347636 backedges. 0 proven. 347636 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:18:09,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165282602] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:18:09,433 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [14812720] [2021-11-07 02:18:09,437 INFO L159 IcfgInterpreter]: Started Sifa with 48 locations of interest [2021-11-07 02:18:09,438 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 02:18:09,438 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 02:18:09,438 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 02:18:09,438 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 02:18:09,458 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:18:09,459 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:18:09,460 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:18:09,460 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 02:18:09,460 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:18:09,461 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:18:09,461 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 02:18:09,467 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 290 [2021-11-07 02:18:09,471 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_14|], 21=[|v_#valid_15|]} [2021-11-07 02:18:09,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:18:09,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:18:09,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:18:09,485 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-07 02:18:09,486 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:18:09,486 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 02:18:09,486 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:18:09,486 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 02:18:09,487 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 02:18:09,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:18:09,498 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:18:09,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:18:09,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:18:09,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:18:09,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:18:09,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:18:09,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:18:09,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:18:09,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:18:09,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:18:09,523 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-07 02:18:09,527 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:18:09,528 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 02:18:09,529 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:18:09,529 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 02:18:09,529 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 02:18:09,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:18:09,540 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:18:09,543 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:18:09,546 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 262 [2021-11-07 02:18:09,547 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-07 02:18:09,547 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:287, output treesize:262 [2021-11-07 02:18:09,553 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.9 percent of original size [2021-11-07 02:18:09,557 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 262 [2021-11-07 02:18:09,563 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:18:09,566 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 262 [2021-11-07 02:18:09,572 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:18:09,576 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 265 [2021-11-07 02:18:09,583 INFO L180 QuantifierPusher]: treesize reduction 4, result has 98.7 percent of original size [2021-11-07 02:18:09,590 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 277 [2021-11-07 02:18:09,597 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.9 percent of original size [2021-11-07 02:18:09,601 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 274 [2021-11-07 02:18:09,607 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:18:09,611 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 274 [2021-11-07 02:18:09,617 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:18:09,621 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 277 [2021-11-07 02:18:09,629 INFO L180 QuantifierPusher]: treesize reduction 4, result has 98.8 percent of original size [2021-11-07 02:18:09,636 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 291 [2021-11-07 02:18:09,643 INFO L180 QuantifierPusher]: treesize reduction 5, result has 98.3 percent of original size [2021-11-07 02:18:09,651 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 286 [2021-11-07 02:18:09,661 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:18:09,665 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 286 [2021-11-07 02:18:09,675 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:18:09,679 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 289 [2021-11-07 02:18:09,689 INFO L180 QuantifierPusher]: treesize reduction 4, result has 98.8 percent of original size [2021-11-07 02:18:09,696 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 303 [2021-11-07 02:18:09,703 INFO L180 QuantifierPusher]: treesize reduction 5, result has 98.4 percent of original size [2021-11-07 02:18:09,709 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 298 [2021-11-07 02:18:09,716 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:18:09,720 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 298 [2021-11-07 02:18:09,728 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:18:09,733 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 301 [2021-11-07 02:18:09,742 INFO L180 QuantifierPusher]: treesize reduction 4, result has 98.8 percent of original size [2021-11-07 02:18:09,750 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 313 [2021-11-07 02:18:09,758 INFO L180 QuantifierPusher]: treesize reduction 3, result has 99.1 percent of original size [2021-11-07 02:18:09,763 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 310 [2021-11-07 02:18:09,773 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:18:09,778 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 310 [2021-11-07 02:18:09,786 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:18:09,791 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 313 [2021-11-07 02:18:09,801 INFO L180 QuantifierPusher]: treesize reduction 4, result has 98.9 percent of original size [2021-11-07 02:18:09,809 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 325 [2021-11-07 02:18:09,818 INFO L180 QuantifierPusher]: treesize reduction 3, result has 99.1 percent of original size [2021-11-07 02:18:09,824 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 322 [2021-11-07 02:18:09,832 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:18:09,838 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 322 [2021-11-07 02:18:09,846 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:18:09,852 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 325 [2021-11-07 02:18:09,862 INFO L180 QuantifierPusher]: treesize reduction 4, result has 98.9 percent of original size [2021-11-07 02:18:09,871 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 337 [2021-11-07 02:18:09,880 INFO L180 QuantifierPusher]: treesize reduction 3, result has 99.1 percent of original size [2021-11-07 02:18:09,886 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 334 [2021-11-07 02:18:09,895 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:18:09,901 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 334 [2021-11-07 02:18:09,910 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:18:09,916 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 337 [2021-11-07 02:18:09,928 INFO L180 QuantifierPusher]: treesize reduction 4, result has 99.0 percent of original size [2021-11-07 02:18:09,937 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 349 [2021-11-07 02:18:09,947 INFO L180 QuantifierPusher]: treesize reduction 3, result has 99.2 percent of original size [2021-11-07 02:18:09,954 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 346 [2021-11-07 02:18:09,963 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:18:09,970 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 346 [2021-11-07 02:18:09,979 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:18:09,985 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 349 [2021-11-07 02:18:09,997 INFO L180 QuantifierPusher]: treesize reduction 4, result has 99.0 percent of original size [2021-11-07 02:18:10,008 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 361 [2021-11-07 02:18:10,019 INFO L180 QuantifierPusher]: treesize reduction 3, result has 99.2 percent of original size [2021-11-07 02:18:10,025 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 358 [2021-11-07 02:18:10,035 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:18:10,042 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 358 [2021-11-07 02:18:10,052 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:18:10,059 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 361 [2021-11-07 02:18:10,072 INFO L180 QuantifierPusher]: treesize reduction 4, result has 99.0 percent of original size [2021-11-07 02:18:10,082 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 373 [2021-11-07 02:18:10,093 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:18:10,100 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 373 [2021-11-07 02:18:10,111 INFO L180 QuantifierPusher]: treesize reduction 3, result has 99.2 percent of original size [2021-11-07 02:18:10,119 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 370 [2021-11-07 02:18:10,129 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:18:10,136 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 370 [2021-11-07 02:18:10,145 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:18:10,152 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 373 [2021-11-07 02:18:10,162 INFO L180 QuantifierPusher]: treesize reduction 4, result has 99.1 percent of original size [2021-11-07 02:18:10,173 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 387 [2021-11-07 02:18:10,182 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:18:10,190 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 387 [2021-11-07 02:18:10,200 INFO L180 QuantifierPusher]: treesize reduction 5, result has 98.7 percent of original size [2021-11-07 02:18:10,208 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 379 [2021-11-07 02:18:10,216 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:18:10,224 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 379 [2021-11-07 02:18:10,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:18:10,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:18:10,422 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:18:10,514 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:18:10,530 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 919 [2021-11-07 02:18:10,551 INFO L180 QuantifierPusher]: treesize reduction 4, result has 99.6 percent of original size [2021-11-07 02:18:10,572 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:18:10,585 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:18:10,605 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 694 [2021-11-07 02:18:10,645 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 886 [2021-11-07 02:18:10,662 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:18:10,664 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:18:10,675 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:18:10,687 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 681 [2021-11-07 02:18:10,724 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 877 [2021-11-07 02:18:10,741 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:18:10,755 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 874 [2021-11-07 02:18:10,771 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:18:10,785 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 874 [2021-11-07 02:18:10,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:18:10,942 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:18:10,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:18:10,946 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:18:10,947 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:18:10,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:18:10,955 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:18:10,970 INFO L180 QuantifierPusher]: treesize reduction 120, result has 48.1 percent of original size [2021-11-07 02:18:10,972 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 109 [2021-11-07 02:18:10,974 INFO L180 QuantifierPusher]: treesize reduction 4, result has 97.5 percent of original size [2021-11-07 02:18:10,976 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 145 [2021-11-07 02:18:10,979 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:18:10,981 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 145 [2021-11-07 02:18:10,983 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:18:10,985 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 142 [2021-11-07 02:18:10,987 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:18:10,989 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 142 [2021-11-07 02:18:10,996 INFO L180 QuantifierPusher]: treesize reduction 120, result has 48.1 percent of original size [2021-11-07 02:18:10,997 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 109 [2021-11-07 02:18:11,000 INFO L180 QuantifierPusher]: treesize reduction 4, result has 97.5 percent of original size [2021-11-07 02:18:11,003 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 145 [2021-11-07 02:18:11,005 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:18:11,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:18:11,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:18:11,090 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:18:11,153 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:18:11,155 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 145 [2021-11-07 02:18:11,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:18:11,187 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:18:11,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:18:11,234 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:18:11,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:18:11,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:18:11,357 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:18:11,374 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:18:11,530 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:18:11,542 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 854 [2021-11-07 02:18:11,586 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:18:11,589 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 142 [2021-11-07 02:18:11,589 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:18:11,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:18:11,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:18:11,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:18:11,727 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 02:19:06,310 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 02:19:06,311 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 02:19:06,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [384, 384, 384] total 768 [2021-11-07 02:19:06,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145803739] [2021-11-07 02:19:06,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 769 states [2021-11-07 02:19:06,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 02:19:06,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 769 interpolants. [2021-11-07 02:19:06,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=315212, Invalid=328794, Unknown=0, NotChecked=0, Total=644006 [2021-11-07 02:19:06,434 INFO L87 Difference]: Start difference. First operand 1911 states and 1912 transitions. Second operand has 769 states, 769 states have (on average 4.964889466840052) internal successors, (3818), 768 states have internal predecessors, (3818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:20:35,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:20:35,069 INFO L93 Difference]: Finished difference Result 3838 states and 4223 transitions. [2021-11-07 02:20:35,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 768 states. [2021-11-07 02:20:35,072 INFO L78 Accepts]: Start accepts. Automaton has has 769 states, 769 states have (on average 4.964889466840052) internal successors, (3818), 768 states have internal predecessors, (3818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1909 [2021-11-07 02:20:35,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:20:35,098 INFO L225 Difference]: With dead ends: 3838 [2021-11-07 02:20:35,098 INFO L226 Difference]: Without dead ends: 3831 [2021-11-07 02:20:35,151 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6109 GetRequests, 5307 SyntacticMatches, 1 SemanticMatches, 801 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52267 ImplicationChecksByTransitivity, 244.6s TimeCoverageRelationStatistics Valid=315212, Invalid=328794, Unknown=0, NotChecked=0, Total=644006 [2021-11-07 02:20:35,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3831 states. [2021-11-07 02:20:35,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3831 to 3831. [2021-11-07 02:20:35,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3831 states, 3830 states have (on average 1.0005221932114883) internal successors, (3832), 3830 states have internal predecessors, (3832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:20:35,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3831 states to 3831 states and 3832 transitions. [2021-11-07 02:20:35,286 INFO L78 Accepts]: Start accepts. Automaton has 3831 states and 3832 transitions. Word has length 1909 [2021-11-07 02:20:35,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:20:35,288 INFO L470 AbstractCegarLoop]: Abstraction has 3831 states and 3832 transitions. [2021-11-07 02:20:35,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 769 states, 769 states have (on average 4.964889466840052) internal successors, (3818), 768 states have internal predecessors, (3818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:20:35,291 INFO L276 IsEmpty]: Start isEmpty. Operand 3831 states and 3832 transitions. [2021-11-07 02:20:35,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3830 [2021-11-07 02:20:35,391 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:20:35,392 INFO L513 BasicCegarLoop]: trace histogram [758, 757, 757, 757, 757, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:20:35,445 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c021e7a-e77c-4539-9f01-1e18d4a83e3e/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-11-07 02:20:35,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c021e7a-e77c-4539-9f01-1e18d4a83e3e/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable148 [2021-11-07 02:20:35,593 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:20:35,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:20:35,595 INFO L85 PathProgramCache]: Analyzing trace with hash 280261313, now seen corresponding path program 7 times [2021-11-07 02:20:35,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 02:20:35,595 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451533283] [2021-11-07 02:20:35,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:20:35,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 02:20:39,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat