./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-examples/standard_allDiff2_ground.i --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_8599bd17-1fa4-46b9-82e9-b1ea1bddbd41/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8599bd17-1fa4-46b9-82e9-b1ea1bddbd41/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_8599bd17-1fa4-46b9-82e9-b1ea1bddbd41/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8599bd17-1fa4-46b9-82e9-b1ea1bddbd41/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-examples/standard_allDiff2_ground.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8599bd17-1fa4-46b9-82e9-b1ea1bddbd41/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_8599bd17-1fa4-46b9-82e9-b1ea1bddbd41/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 45c2395b28f523380bfcff26ce2efb02406d69c6cc122ac9297e3f35ef9c7306 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:40:22,798 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:40:22,800 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:40:22,850 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:40:22,851 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:40:22,855 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:40:22,858 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:40:22,862 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:40:22,864 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:40:22,871 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:40:22,872 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:40:22,874 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:40:22,875 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:40:22,878 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:40:22,880 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:40:22,885 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:40:22,887 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:40:22,888 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:40:22,891 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:40:22,904 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:40:22,906 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:40:22,908 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:40:22,911 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:40:22,912 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:40:22,922 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:40:22,923 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:40:22,923 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:40:22,926 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:40:22,926 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:40:22,928 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:40:22,929 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:40:22,930 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:40:22,932 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:40:22,933 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:40:22,935 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:40:22,935 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:40:22,936 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:40:22,936 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:40:22,937 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:40:22,938 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:40:22,938 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:40:22,939 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8599bd17-1fa4-46b9-82e9-b1ea1bddbd41/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:40:22,990 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:40:22,990 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:40:22,992 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:40:22,992 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:40:22,992 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:40:22,993 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:40:22,993 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:40:22,993 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:40:22,993 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:40:22,994 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:40:23,000 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:40:23,001 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:40:23,001 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:40:23,001 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:40:23,002 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:40:23,003 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:40:23,003 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:40:23,003 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:40:23,003 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:40:23,004 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:40:23,004 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:40:23,004 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:40:23,004 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:40:23,004 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:40:23,005 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:40:23,005 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:40:23,005 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:40:23,005 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:40:23,006 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:40:23,007 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:40:23,007 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:40:23,008 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:40:23,008 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:40:23,008 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:40:23,009 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:40:23,009 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:40:23,009 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:40:23,009 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:40:23,009 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:40:23,010 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_8599bd17-1fa4-46b9-82e9-b1ea1bddbd41/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8599bd17-1fa4-46b9-82e9-b1ea1bddbd41/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 45c2395b28f523380bfcff26ce2efb02406d69c6cc122ac9297e3f35ef9c7306 [2021-11-07 01:40:23,317 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:40:23,338 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:40:23,341 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:40:23,342 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:40:23,343 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:40:23,344 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8599bd17-1fa4-46b9-82e9-b1ea1bddbd41/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/array-examples/standard_allDiff2_ground.i [2021-11-07 01:40:23,429 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8599bd17-1fa4-46b9-82e9-b1ea1bddbd41/bin/utaipan-UUZaoUuFF8/data/7692665ec/3c21163117ab48e6911031558bb0b818/FLAG4a3f17a60 [2021-11-07 01:40:23,882 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:40:23,884 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8599bd17-1fa4-46b9-82e9-b1ea1bddbd41/sv-benchmarks/c/array-examples/standard_allDiff2_ground.i [2021-11-07 01:40:23,895 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8599bd17-1fa4-46b9-82e9-b1ea1bddbd41/bin/utaipan-UUZaoUuFF8/data/7692665ec/3c21163117ab48e6911031558bb0b818/FLAG4a3f17a60 [2021-11-07 01:40:24,258 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8599bd17-1fa4-46b9-82e9-b1ea1bddbd41/bin/utaipan-UUZaoUuFF8/data/7692665ec/3c21163117ab48e6911031558bb0b818 [2021-11-07 01:40:24,260 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:40:24,261 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:40:24,277 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:40:24,278 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:40:24,281 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:40:24,282 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:40:24" (1/1) ... [2021-11-07 01:40:24,283 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bf6242e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:40:24, skipping insertion in model container [2021-11-07 01:40:24,284 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:40:24" (1/1) ... [2021-11-07 01:40:24,292 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:40:24,307 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:40:24,497 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_8599bd17-1fa4-46b9-82e9-b1ea1bddbd41/sv-benchmarks/c/array-examples/standard_allDiff2_ground.i[817,830] [2021-11-07 01:40:24,520 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:40:24,528 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:40:24,543 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_8599bd17-1fa4-46b9-82e9-b1ea1bddbd41/sv-benchmarks/c/array-examples/standard_allDiff2_ground.i[817,830] [2021-11-07 01:40:24,565 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:40:24,580 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:40:24,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:40:24 WrapperNode [2021-11-07 01:40:24,581 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:40:24,582 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:40:24,582 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:40:24,582 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:40:24,590 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:40:24" (1/1) ... [2021-11-07 01:40:24,598 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:40:24" (1/1) ... [2021-11-07 01:40:24,625 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:40:24,626 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:40:24,626 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:40:24,627 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:40:24,635 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:40:24" (1/1) ... [2021-11-07 01:40:24,636 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:40:24" (1/1) ... [2021-11-07 01:40:24,647 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:40:24" (1/1) ... [2021-11-07 01:40:24,648 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:40:24" (1/1) ... [2021-11-07 01:40:24,659 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:40:24" (1/1) ... [2021-11-07 01:40:24,668 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:40:24" (1/1) ... [2021-11-07 01:40:24,670 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:40:24" (1/1) ... [2021-11-07 01:40:24,676 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:40:24,678 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:40:24,679 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:40:24,679 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:40:24,680 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:40:24" (1/1) ... [2021-11-07 01:40:24,687 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:40:24,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8599bd17-1fa4-46b9-82e9-b1ea1bddbd41/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:40:24,710 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8599bd17-1fa4-46b9-82e9-b1ea1bddbd41/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:40:24,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8599bd17-1fa4-46b9-82e9-b1ea1bddbd41/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:40:24,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 01:40:24,766 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:40:24,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 01:40:24,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:40:24,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:40:24,769 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 01:40:24,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:40:25,154 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:40:25,154 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2021-11-07 01:40:25,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:40:25 BoogieIcfgContainer [2021-11-07 01:40:25,157 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:40:25,159 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:40:25,159 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:40:25,175 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:40:25,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:40:24" (1/3) ... [2021-11-07 01:40:25,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dde93d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:40:25, skipping insertion in model container [2021-11-07 01:40:25,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:40:24" (2/3) ... [2021-11-07 01:40:25,177 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dde93d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:40:25, skipping insertion in model container [2021-11-07 01:40:25,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:40:25" (3/3) ... [2021-11-07 01:40:25,179 INFO L111 eAbstractionObserver]: Analyzing ICFG standard_allDiff2_ground.i [2021-11-07 01:40:25,184 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:40:25,184 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 01:40:25,272 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:40:25,286 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 01:40:25,286 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 01:40:25,303 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 12 states have internal predecessors, (19), 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 01:40:25,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 01:40:25,321 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:40:25,322 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:40:25,323 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:40:25,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:40:25,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1443804038, now seen corresponding path program 1 times [2021-11-07 01:40:25,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:40:25,342 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816553452] [2021-11-07 01:40:25,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:40:25,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:40:25,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:40:25,539 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 01:40:25,540 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:40:25,541 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816553452] [2021-11-07 01:40:25,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816553452] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:40:25,542 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:40:25,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 01:40:25,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24065552] [2021-11-07 01:40:25,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:40:25,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:40:25,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:40:25,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:40:25,569 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:25,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:40:25,618 INFO L93 Difference]: Finished difference Result 25 states and 37 transitions. [2021-11-07 01:40:25,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:40:25,620 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-07 01:40:25,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:40:25,629 INFO L225 Difference]: With dead ends: 25 [2021-11-07 01:40:25,629 INFO L226 Difference]: Without dead ends: 12 [2021-11-07 01:40:25,632 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:40:25,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-11-07 01:40:25,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-11-07 01:40:25,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 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 01:40:25,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 16 transitions. [2021-11-07 01:40:25,663 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 16 transitions. Word has length 8 [2021-11-07 01:40:25,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:40:25,664 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 16 transitions. [2021-11-07 01:40:25,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:25,664 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 16 transitions. [2021-11-07 01:40:25,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-07 01:40:25,665 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:40:25,666 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:40:25,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 01:40:25,667 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:40:25,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:40:25,670 INFO L85 PathProgramCache]: Analyzing trace with hash 322298903, now seen corresponding path program 1 times [2021-11-07 01:40:25,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:40:25,671 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159731658] [2021-11-07 01:40:25,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:40:25,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:40:25,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:40:25,730 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:40:25,730 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:40:25,731 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159731658] [2021-11-07 01:40:25,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159731658] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:40:25,731 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [684651374] [2021-11-07 01:40:25,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:40:25,732 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:40:25,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8599bd17-1fa4-46b9-82e9-b1ea1bddbd41/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:40:25,735 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8599bd17-1fa4-46b9-82e9-b1ea1bddbd41/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:40:25,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8599bd17-1fa4-46b9-82e9-b1ea1bddbd41/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 01:40:25,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:40:25,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:40:25,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:40:25,871 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:40:25,872 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:40:25,935 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:40:25,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [684651374] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:40:25,936 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-11-07 01:40:25,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [3] total 6 [2021-11-07 01:40:25,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637350365] [2021-11-07 01:40:25,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:40:25,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:40:25,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:40:25,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:40:25,939 INFO L87 Difference]: Start difference. First operand 12 states and 16 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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 01:40:26,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:40:26,096 INFO L93 Difference]: Finished difference Result 27 states and 38 transitions. [2021-11-07 01:40:26,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:40:26,097 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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 9 [2021-11-07 01:40:26,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:40:26,098 INFO L225 Difference]: With dead ends: 27 [2021-11-07 01:40:26,098 INFO L226 Difference]: Without dead ends: 16 [2021-11-07 01:40:26,099 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 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 01:40:26,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-11-07 01:40:26,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-11-07 01:40:26,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 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 01:40:26,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 21 transitions. [2021-11-07 01:40:26,104 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 21 transitions. Word has length 9 [2021-11-07 01:40:26,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:40:26,105 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 21 transitions. [2021-11-07 01:40:26,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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 01:40:26,105 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 21 transitions. [2021-11-07 01:40:26,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-07 01:40:26,106 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:40:26,106 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:40:26,157 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8599bd17-1fa4-46b9-82e9-b1ea1bddbd41/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:40:26,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8599bd17-1fa4-46b9-82e9-b1ea1bddbd41/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:40:26,307 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:40:26,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:40:26,308 INFO L85 PathProgramCache]: Analyzing trace with hash -936771526, now seen corresponding path program 1 times [2021-11-07 01:40:26,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:40:26,308 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337220881] [2021-11-07 01:40:26,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:40:26,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:40:26,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:40:26,410 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:40:26,411 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:40:26,411 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337220881] [2021-11-07 01:40:26,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337220881] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:40:26,412 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:40:26,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 01:40:26,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393125608] [2021-11-07 01:40:26,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:40:26,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:40:26,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:40:26,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:40:26,415 INFO L87 Difference]: Start difference. First operand 16 states and 21 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 01:40:26,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:40:26,442 INFO L93 Difference]: Finished difference Result 27 states and 36 transitions. [2021-11-07 01:40:26,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:40:26,443 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 14 [2021-11-07 01:40:26,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:40:26,444 INFO L225 Difference]: With dead ends: 27 [2021-11-07 01:40:26,445 INFO L226 Difference]: Without dead ends: 17 [2021-11-07 01:40:26,445 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:40:26,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-11-07 01:40:26,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-11-07 01:40:26,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 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 01:40:26,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 22 transitions. [2021-11-07 01:40:26,457 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 22 transitions. Word has length 14 [2021-11-07 01:40:26,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:40:26,458 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 22 transitions. [2021-11-07 01:40:26,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 01:40:26,458 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 22 transitions. [2021-11-07 01:40:26,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-07 01:40:26,460 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:40:26,460 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:40:26,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 01:40:26,461 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:40:26,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:40:26,462 INFO L85 PathProgramCache]: Analyzing trace with hash 50807675, now seen corresponding path program 1 times [2021-11-07 01:40:26,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:40:26,466 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834812814] [2021-11-07 01:40:26,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:40:26,466 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:40:26,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:40:26,572 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:40:26,572 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:40:26,572 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834812814] [2021-11-07 01:40:26,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834812814] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:40:26,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238967049] [2021-11-07 01:40:26,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:40:26,573 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:40:26,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8599bd17-1fa4-46b9-82e9-b1ea1bddbd41/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:40:26,585 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8599bd17-1fa4-46b9-82e9-b1ea1bddbd41/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:40:26,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8599bd17-1fa4-46b9-82e9-b1ea1bddbd41/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 01:40:26,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:40:26,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:40:26,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:40:26,739 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:40:26,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:40:26,810 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:40:26,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238967049] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:40:26,810 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1135706208] [2021-11-07 01:40:26,840 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-07 01:40:26,840 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 01:40:26,851 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 01:40:26,858 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 01:40:26,858 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 01:40:26,913 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:26,919 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:26,922 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:26,924 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 01:40:26,927 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:26,931 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:26,933 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 01:40:26,938 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 125 [2021-11-07 01:40:26,969 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_12|], 21=[|v_#valid_23|]} [2021-11-07 01:40:26,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:26,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:26,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:26,996 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 01:40:27,001 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:27,001 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:40:27,002 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:27,003 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:40:27,003 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:40:27,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:27,031 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:27,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:27,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:27,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:27,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:27,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:27,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:27,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:27,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:27,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:27,074 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 01:40:27,078 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:27,081 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 01:40:27,083 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:27,084 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 01:40:27,085 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 01:40:27,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:27,100 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:27,102 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:27,104 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-07 01:40:27,105 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:40:27,106 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:122, output treesize:97 [2021-11-07 01:40:27,116 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.7 percent of original size [2021-11-07 01:40:27,139 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:27,145 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:27,147 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:27,147 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:27,148 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-11-07 01:40:27,149 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 01:40:27,149 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:27,153 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:27,154 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:27,157 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:27,164 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-07 01:40:27,165 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-07 01:40:27,165 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:27,166 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:27,167 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-07 01:40:27,171 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 118 [2021-11-07 01:40:27,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:27,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:27,196 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2021-11-07 01:40:27,197 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:27,203 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-07 01:40:27,204 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:27,206 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-07 01:40:27,207 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:40:27,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:27,233 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:27,235 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:27,239 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 113 [2021-11-07 01:40:27,240 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:40:27,240 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:116, output treesize:113 [2021-11-07 01:40:27,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:27,291 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:27,338 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:27,407 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:27,434 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:27,435 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:27,437 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:27,438 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:27,439 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-07 01:40:27,440 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-07 01:40:27,440 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:27,443 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:27,449 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:27,453 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:27,455 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:27,456 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:27,457 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 01:40:27,459 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:27,459 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:27,460 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-07 01:40:27,465 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 251 [2021-11-07 01:40:27,467 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:27,471 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:27,475 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 232 [2021-11-07 01:40:27,480 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 233 [2021-11-07 01:40:27,486 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:27,491 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:27,494 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:27,496 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:27,497 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:27,498 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:27,499 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-07 01:40:27,500 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-07 01:40:27,501 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:27,501 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:27,503 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:27,503 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:27,504 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 01:40:27,505 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-11-07 01:40:27,506 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:27,507 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:27,508 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-11-07 01:40:27,511 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:27,512 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:27,514 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:27,514 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:27,515 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-07 01:40:27,516 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-07 01:40:27,517 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:27,518 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:27,519 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:27,519 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:27,520 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-07 01:40:27,521 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-07 01:40:27,522 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:27,523 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:27,524 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-07 01:40:27,528 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 267 [2021-11-07 01:40:27,529 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:27,533 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:27,540 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 240 [2021-11-07 01:40:27,548 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 296 [2021-11-07 01:40:27,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:27,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:27,577 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 35 [2021-11-07 01:40:27,578 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:27,580 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-07 01:40:27,581 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:27,582 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-07 01:40:27,582 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:40:27,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:27,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:27,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:27,602 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 50 [2021-11-07 01:40:27,603 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:27,606 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-07 01:40:27,607 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:27,608 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-07 01:40:27,608 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 01:40:27,609 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:27,659 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:27,688 INFO L180 QuantifierPusher]: treesize reduction 94, result has 74.2 percent of original size [2021-11-07 01:40:27,699 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 281 [2021-11-07 01:40:27,701 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-07 01:40:27,701 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:371, output treesize:281 [2021-11-07 01:40:27,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:27,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:27,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:27,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:27,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:27,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:27,763 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:27,773 INFO L180 QuantifierPusher]: treesize reduction 36, result has 64.7 percent of original size [2021-11-07 01:40:27,778 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:27,779 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:27,780 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:27,780 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:27,781 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:40:27,781 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-07 01:40:27,782 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:27,783 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:27,783 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-07 01:40:27,785 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-11-07 01:40:27,792 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-07 01:40:27,793 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:27,793 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 01:40:27,794 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:27,794 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 01:40:27,795 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:40:27,795 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:27,798 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:27,800 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:27,802 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-11-07 01:40:27,803 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:40:27,803 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:61, output treesize:63 [2021-11-07 01:40:27,810 INFO L180 QuantifierPusher]: treesize reduction 40, result has 48.7 percent of original size [2021-11-07 01:40:27,812 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-07 01:40:27,818 INFO L180 QuantifierPusher]: treesize reduction 12, result has 80.0 percent of original size [2021-11-07 01:40:27,821 INFO L185 QuantifierPusher]: treesize reduction 43, result has 2.3 percent of original size 1 [2021-11-07 01:40:27,823 INFO L180 QuantifierPusher]: treesize reduction 56, result has 1.8 percent of original size [2021-11-07 01:40:27,824 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 01:40:27,827 INFO L180 QuantifierPusher]: treesize reduction 7, result has 93.2 percent of original size [2021-11-07 01:40:27,831 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 91 [2021-11-07 01:40:27,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:27,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:27,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:27,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:27,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:27,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:27,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:27,904 INFO L180 QuantifierPusher]: treesize reduction 15, result has 89.6 percent of original size [2021-11-07 01:40:27,910 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-11-07 01:40:27,916 INFO L180 QuantifierPusher]: treesize reduction 15, result has 89.6 percent of original size [2021-11-07 01:40:27,926 INFO L185 QuantifierPusher]: treesize reduction 33, result has 71.1 percent of original size 81 [2021-11-07 01:40:27,934 INFO L180 QuantifierPusher]: treesize reduction 11, result has 94.2 percent of original size [2021-11-07 01:40:27,948 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 218 [2021-11-07 01:40:27,949 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:27,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:27,983 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:27,985 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:27,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:27,993 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:27,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:28,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:28,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:28,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:28,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:28,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:28,030 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:28,040 INFO L180 QuantifierPusher]: treesize reduction 41, result has 53.9 percent of original size [2021-11-07 01:40:28,042 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-07 01:40:28,044 INFO L180 QuantifierPusher]: treesize reduction 4, result has 92.7 percent of original size [2021-11-07 01:40:28,048 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-07 01:40:28,052 INFO L180 QuantifierPusher]: treesize reduction 45, result has 66.9 percent of original size [2021-11-07 01:40:28,055 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-11-07 01:40:28,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:28,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:28,069 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:28,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:28,086 INFO L180 QuantifierPusher]: treesize reduction 41, result has 53.9 percent of original size [2021-11-07 01:40:28,088 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-07 01:40:28,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:28,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:28,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:28,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:28,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:28,126 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:28,131 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:28,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:28,165 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 01:40:29,683 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 01:40:29,683 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 01:40:29,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-07 01:40:29,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231408432] [2021-11-07 01:40:29,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:40:29,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:40:29,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:40:29,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-11-07 01:40:29,686 INFO L87 Difference]: Start difference. First operand 17 states and 22 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:29,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:40:29,759 INFO L93 Difference]: Finished difference Result 61 states and 83 transitions. [2021-11-07 01:40:29,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 01:40:29,761 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-07 01:40:29,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:40:29,763 INFO L225 Difference]: With dead ends: 61 [2021-11-07 01:40:29,765 INFO L226 Difference]: Without dead ends: 48 [2021-11-07 01:40:29,766 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-11-07 01:40:29,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-11-07 01:40:29,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 21. [2021-11-07 01:40:29,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.3) internal successors, (26), 20 states have internal predecessors, (26), 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 01:40:29,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2021-11-07 01:40:29,777 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 26 transitions. Word has length 15 [2021-11-07 01:40:29,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:40:29,778 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 26 transitions. [2021-11-07 01:40:29,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:29,780 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 26 transitions. [2021-11-07 01:40:29,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-07 01:40:29,781 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:40:29,781 INFO L513 BasicCegarLoop]: trace histogram [6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:40:29,818 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8599bd17-1fa4-46b9-82e9-b1ea1bddbd41/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:40:29,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8599bd17-1fa4-46b9-82e9-b1ea1bddbd41/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:40:29,982 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:40:29,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:40:29,983 INFO L85 PathProgramCache]: Analyzing trace with hash -595715013, now seen corresponding path program 2 times [2021-11-07 01:40:29,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:40:29,983 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673107286] [2021-11-07 01:40:29,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:40:29,983 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:40:30,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:40:30,112 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:40:30,112 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:40:30,115 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673107286] [2021-11-07 01:40:30,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673107286] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:40:30,115 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39399164] [2021-11-07 01:40:30,115 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 01:40:30,115 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:40:30,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8599bd17-1fa4-46b9-82e9-b1ea1bddbd41/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:40:30,126 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8599bd17-1fa4-46b9-82e9-b1ea1bddbd41/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:40:30,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8599bd17-1fa4-46b9-82e9-b1ea1bddbd41/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-07 01:40:30,217 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-07 01:40:30,217 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:40:30,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:40:30,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:40:30,318 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-07 01:40:30,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:40:30,431 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-07 01:40:30,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [39399164] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:40:30,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [895723144] [2021-11-07 01:40:30,434 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-07 01:40:30,435 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 01:40:30,435 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 01:40:30,435 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 01:40:30,436 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 01:40:30,459 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:30,460 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:30,460 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:30,461 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 01:40:30,462 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:30,463 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:30,463 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 01:40:30,465 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 125 [2021-11-07 01:40:30,469 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_13|], 21=[|v_#valid_24|]} [2021-11-07 01:40:30,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:30,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:30,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:30,480 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 01:40:30,481 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:30,482 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:40:30,482 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:30,483 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:40:30,483 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:40:30,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:30,489 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:30,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:30,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:30,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:30,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:30,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:30,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:30,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:30,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:30,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:30,507 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 01:40:30,508 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:30,510 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 01:40:30,511 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:30,512 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 01:40:30,512 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 01:40:30,513 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:30,523 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:30,525 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:30,527 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-07 01:40:30,528 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:40:30,528 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:122, output treesize:97 [2021-11-07 01:40:30,532 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.7 percent of original size [2021-11-07 01:40:30,538 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:30,538 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:30,539 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:30,540 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:30,541 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-07 01:40:30,542 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-07 01:40:30,542 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:30,543 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:30,544 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:30,545 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:30,546 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-11-07 01:40:30,547 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 01:40:30,547 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:30,548 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:30,549 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-07 01:40:30,551 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 118 [2021-11-07 01:40:30,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:30,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:30,566 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2021-11-07 01:40:30,568 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:30,571 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-07 01:40:30,573 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:30,574 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-07 01:40:30,574 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:40:30,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:30,583 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:30,585 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:30,588 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 113 [2021-11-07 01:40:30,588 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:40:30,589 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:116, output treesize:113 [2021-11-07 01:40:30,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:30,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:30,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:30,647 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:30,657 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:30,661 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:30,667 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:30,671 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:30,676 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:30,676 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:30,677 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 01:40:30,678 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:30,679 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:30,680 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-07 01:40:30,684 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 251 [2021-11-07 01:40:30,684 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:30,687 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:30,693 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 232 [2021-11-07 01:40:30,697 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 233 [2021-11-07 01:40:30,697 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:30,698 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:30,703 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:30,703 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:30,704 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-07 01:40:30,705 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-07 01:40:30,709 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:30,713 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:30,716 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:30,717 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:30,718 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:30,719 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:30,719 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-07 01:40:30,720 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-07 01:40:30,722 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:30,723 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:30,725 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:30,726 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:30,727 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-07 01:40:30,728 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-07 01:40:30,728 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:30,729 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:30,729 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-07 01:40:30,737 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:30,738 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:30,740 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:30,740 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:30,741 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-07 01:40:30,742 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-07 01:40:30,743 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:30,744 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:30,745 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:30,746 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:30,747 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 01:40:30,747 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-11-07 01:40:30,748 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:30,749 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:30,753 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-11-07 01:40:30,772 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 267 [2021-11-07 01:40:30,774 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:30,777 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:30,781 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 240 [2021-11-07 01:40:30,785 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 296 [2021-11-07 01:40:30,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:30,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:30,816 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 35 [2021-11-07 01:40:30,817 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:30,826 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-07 01:40:30,827 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:30,828 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-07 01:40:30,828 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:40:30,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:30,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:30,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:30,852 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 50 [2021-11-07 01:40:30,853 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:30,855 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-07 01:40:30,856 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:30,857 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-07 01:40:30,857 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 01:40:30,858 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:30,903 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:30,918 INFO L180 QuantifierPusher]: treesize reduction 94, result has 74.2 percent of original size [2021-11-07 01:40:30,927 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 281 [2021-11-07 01:40:30,928 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-07 01:40:30,929 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:371, output treesize:281 [2021-11-07 01:40:30,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:30,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:30,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:30,974 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:30,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:30,978 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:30,983 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:30,991 INFO L180 QuantifierPusher]: treesize reduction 36, result has 64.7 percent of original size [2021-11-07 01:40:30,997 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:30,997 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:30,999 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:30,999 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:31,000 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:40:31,002 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-07 01:40:31,002 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:31,003 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:31,003 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-07 01:40:31,005 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-11-07 01:40:31,013 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-07 01:40:31,013 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:31,014 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 01:40:31,014 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:31,015 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 01:40:31,015 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:40:31,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:31,018 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:31,019 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:31,021 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-11-07 01:40:31,022 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:40:31,022 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:61, output treesize:63 [2021-11-07 01:40:31,026 INFO L180 QuantifierPusher]: treesize reduction 40, result has 48.7 percent of original size [2021-11-07 01:40:31,028 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-07 01:40:31,036 INFO L180 QuantifierPusher]: treesize reduction 12, result has 80.0 percent of original size [2021-11-07 01:40:31,038 INFO L185 QuantifierPusher]: treesize reduction 43, result has 2.3 percent of original size 1 [2021-11-07 01:40:31,040 INFO L180 QuantifierPusher]: treesize reduction 56, result has 1.8 percent of original size [2021-11-07 01:40:31,040 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 01:40:31,046 INFO L180 QuantifierPusher]: treesize reduction 7, result has 93.2 percent of original size [2021-11-07 01:40:31,049 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 91 [2021-11-07 01:40:31,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:31,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:31,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:31,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:31,067 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:31,075 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:31,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:31,107 INFO L180 QuantifierPusher]: treesize reduction 15, result has 89.6 percent of original size [2021-11-07 01:40:31,110 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-11-07 01:40:31,113 INFO L180 QuantifierPusher]: treesize reduction 15, result has 89.6 percent of original size [2021-11-07 01:40:31,120 INFO L185 QuantifierPusher]: treesize reduction 33, result has 71.1 percent of original size 81 [2021-11-07 01:40:31,126 INFO L180 QuantifierPusher]: treesize reduction 11, result has 94.2 percent of original size [2021-11-07 01:40:31,143 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 218 [2021-11-07 01:40:31,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:31,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:31,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:31,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:31,167 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:31,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:31,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:31,183 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:31,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:31,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:31,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:31,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:31,237 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:31,252 INFO L180 QuantifierPusher]: treesize reduction 41, result has 53.9 percent of original size [2021-11-07 01:40:31,255 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-07 01:40:31,258 INFO L180 QuantifierPusher]: treesize reduction 4, result has 92.7 percent of original size [2021-11-07 01:40:31,260 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-07 01:40:31,265 INFO L180 QuantifierPusher]: treesize reduction 45, result has 66.9 percent of original size [2021-11-07 01:40:31,267 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-11-07 01:40:31,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:31,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:31,282 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:31,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:31,302 INFO L180 QuantifierPusher]: treesize reduction 41, result has 53.9 percent of original size [2021-11-07 01:40:31,304 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-07 01:40:31,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:31,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:31,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:31,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:31,354 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:31,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:31,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:31,374 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:31,408 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 01:40:32,947 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 01:40:32,947 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 01:40:32,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 13 [2021-11-07 01:40:32,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956420930] [2021-11-07 01:40:32,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-07 01:40:32,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:40:32,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-07 01:40:32,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2021-11-07 01:40:32,949 INFO L87 Difference]: Start difference. First operand 21 states and 26 transitions. Second operand has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 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 01:40:33,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:40:33,136 INFO L93 Difference]: Finished difference Result 59 states and 86 transitions. [2021-11-07 01:40:33,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-07 01:40:33,137 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 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 19 [2021-11-07 01:40:33,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:40:33,137 INFO L225 Difference]: With dead ends: 59 [2021-11-07 01:40:33,137 INFO L226 Difference]: Without dead ends: 39 [2021-11-07 01:40:33,138 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=181, Invalid=575, Unknown=0, NotChecked=0, Total=756 [2021-11-07 01:40:33,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-11-07 01:40:33,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-11-07 01:40:33,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.3421052631578947) internal successors, (51), 38 states have internal predecessors, (51), 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 01:40:33,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 51 transitions. [2021-11-07 01:40:33,146 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 51 transitions. Word has length 19 [2021-11-07 01:40:33,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:40:33,146 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 51 transitions. [2021-11-07 01:40:33,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 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 01:40:33,146 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 51 transitions. [2021-11-07 01:40:33,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-07 01:40:33,147 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:40:33,147 INFO L513 BasicCegarLoop]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:40:33,184 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8599bd17-1fa4-46b9-82e9-b1ea1bddbd41/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:40:33,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8599bd17-1fa4-46b9-82e9-b1ea1bddbd41/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2021-11-07 01:40:33,362 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:40:33,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:40:33,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1768001109, now seen corresponding path program 3 times [2021-11-07 01:40:33,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:40:33,363 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714611876] [2021-11-07 01:40:33,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:40:33,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:40:33,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:40:33,555 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-11-07 01:40:33,555 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:40:33,555 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714611876] [2021-11-07 01:40:33,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714611876] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:40:33,556 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366973765] [2021-11-07 01:40:33,556 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 01:40:33,556 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:40:33,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8599bd17-1fa4-46b9-82e9-b1ea1bddbd41/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:40:33,557 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8599bd17-1fa4-46b9-82e9-b1ea1bddbd41/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:40:33,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8599bd17-1fa4-46b9-82e9-b1ea1bddbd41/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-07 01:40:33,647 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 01:40:33,648 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:40:33,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-07 01:40:33,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:40:33,776 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 89 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-11-07 01:40:33,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:40:34,052 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 89 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-11-07 01:40:34,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [366973765] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:40:34,052 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [793684132] [2021-11-07 01:40:34,054 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-07 01:40:34,054 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 01:40:34,055 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 01:40:34,055 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 01:40:34,055 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 01:40:34,065 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:34,066 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:34,067 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:34,067 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 01:40:34,068 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:34,068 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:34,069 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 01:40:34,073 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 125 [2021-11-07 01:40:34,081 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_14|], 21=[|v_#valid_25|]} [2021-11-07 01:40:34,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:34,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:34,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:34,094 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 01:40:34,095 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:34,095 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:40:34,096 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:34,096 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:40:34,096 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:40:34,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:34,104 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:34,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:34,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:34,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:34,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:34,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:34,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:34,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:34,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:34,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:34,132 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 01:40:34,133 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:34,135 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 01:40:34,136 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:34,136 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 01:40:34,136 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 01:40:34,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:34,140 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:34,141 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:34,143 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-07 01:40:34,143 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:40:34,144 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:122, output treesize:97 [2021-11-07 01:40:34,147 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.7 percent of original size [2021-11-07 01:40:34,153 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:34,153 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:34,154 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:34,155 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:34,155 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-11-07 01:40:34,156 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 01:40:34,156 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:34,156 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:34,157 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:34,157 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:34,158 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-07 01:40:34,158 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-07 01:40:34,159 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:34,159 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:34,160 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-07 01:40:34,163 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 118 [2021-11-07 01:40:34,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:34,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:34,173 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2021-11-07 01:40:34,174 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:34,176 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-07 01:40:34,176 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:34,177 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-07 01:40:34,177 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:40:34,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:34,181 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:34,183 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:34,186 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 113 [2021-11-07 01:40:34,187 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:40:34,187 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:116, output treesize:113 [2021-11-07 01:40:34,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:34,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:34,206 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:34,222 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:34,229 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:34,229 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:34,231 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:34,231 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:34,232 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-07 01:40:34,233 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-07 01:40:34,233 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:34,235 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:34,239 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:34,242 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:34,244 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:34,244 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:34,245 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 01:40:34,246 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:34,246 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:34,247 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-07 01:40:34,250 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 251 [2021-11-07 01:40:34,250 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:34,252 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:34,255 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 232 [2021-11-07 01:40:34,257 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 233 [2021-11-07 01:40:34,261 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:34,264 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:34,266 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:34,266 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:34,267 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:34,268 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:34,268 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-07 01:40:34,269 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-07 01:40:34,269 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:34,270 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:34,270 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:34,271 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:34,272 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-07 01:40:34,272 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-07 01:40:34,274 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:34,274 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:34,275 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-07 01:40:34,278 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:34,279 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:34,279 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:34,280 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:34,281 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-07 01:40:34,281 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-07 01:40:34,282 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:34,282 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:34,283 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:34,283 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:34,284 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 01:40:34,285 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-11-07 01:40:34,285 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:34,286 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:34,286 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-11-07 01:40:34,290 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 267 [2021-11-07 01:40:34,291 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:34,293 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:34,296 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 240 [2021-11-07 01:40:34,300 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 296 [2021-11-07 01:40:34,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:34,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:34,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:34,325 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 50 [2021-11-07 01:40:34,326 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:34,328 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-07 01:40:34,329 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:34,329 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-07 01:40:34,329 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:40:34,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:34,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:34,344 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 35 [2021-11-07 01:40:34,345 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:34,347 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-07 01:40:34,348 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:34,348 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-07 01:40:34,349 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 01:40:34,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:34,369 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:34,386 INFO L180 QuantifierPusher]: treesize reduction 94, result has 74.2 percent of original size [2021-11-07 01:40:34,390 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 281 [2021-11-07 01:40:34,391 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-07 01:40:34,392 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:371, output treesize:281 [2021-11-07 01:40:34,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:34,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:34,418 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:34,419 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:34,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:34,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:34,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:34,429 INFO L180 QuantifierPusher]: treesize reduction 36, result has 64.7 percent of original size [2021-11-07 01:40:34,433 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:34,434 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:34,434 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:34,435 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:34,436 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:40:34,437 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-07 01:40:34,437 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:34,438 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:34,439 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-07 01:40:34,440 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-11-07 01:40:34,445 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-07 01:40:34,446 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:34,446 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 01:40:34,447 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:34,447 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 01:40:34,447 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:40:34,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:34,450 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:34,451 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:34,452 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-11-07 01:40:34,453 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:40:34,453 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:61, output treesize:63 [2021-11-07 01:40:34,457 INFO L180 QuantifierPusher]: treesize reduction 40, result has 48.7 percent of original size [2021-11-07 01:40:34,462 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-07 01:40:34,467 INFO L180 QuantifierPusher]: treesize reduction 12, result has 80.0 percent of original size [2021-11-07 01:40:34,468 INFO L185 QuantifierPusher]: treesize reduction 41, result has 2.4 percent of original size 1 [2021-11-07 01:40:34,470 INFO L180 QuantifierPusher]: treesize reduction 54, result has 1.8 percent of original size [2021-11-07 01:40:34,470 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 01:40:34,472 INFO L180 QuantifierPusher]: treesize reduction 7, result has 93.2 percent of original size [2021-11-07 01:40:34,476 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 91 [2021-11-07 01:40:34,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:34,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:34,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:34,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:34,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:34,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:34,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:34,547 INFO L180 QuantifierPusher]: treesize reduction 15, result has 89.6 percent of original size [2021-11-07 01:40:34,551 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-11-07 01:40:34,555 INFO L180 QuantifierPusher]: treesize reduction 15, result has 89.6 percent of original size [2021-11-07 01:40:34,563 INFO L185 QuantifierPusher]: treesize reduction 33, result has 71.1 percent of original size 81 [2021-11-07 01:40:34,570 INFO L180 QuantifierPusher]: treesize reduction 11, result has 94.2 percent of original size [2021-11-07 01:40:34,587 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 218 [2021-11-07 01:40:34,589 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:34,606 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:34,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:34,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:34,611 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:34,616 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:34,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:34,627 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:34,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:34,639 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:34,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:34,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:34,646 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:34,654 INFO L180 QuantifierPusher]: treesize reduction 41, result has 53.9 percent of original size [2021-11-07 01:40:34,656 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-07 01:40:34,657 INFO L180 QuantifierPusher]: treesize reduction 4, result has 92.7 percent of original size [2021-11-07 01:40:34,663 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-07 01:40:34,667 INFO L180 QuantifierPusher]: treesize reduction 45, result has 66.9 percent of original size [2021-11-07 01:40:34,669 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-11-07 01:40:34,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:34,674 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:34,678 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:34,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:34,689 INFO L180 QuantifierPusher]: treesize reduction 41, result has 53.9 percent of original size [2021-11-07 01:40:34,690 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-07 01:40:34,691 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:34,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:34,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:34,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:34,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:34,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:34,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:34,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:34,754 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 01:40:36,054 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 01:40:36,054 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 01:40:36,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 24 [2021-11-07 01:40:36,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010987751] [2021-11-07 01:40:36,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-07 01:40:36,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:40:36,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-07 01:40:36,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=298, Invalid=694, Unknown=0, NotChecked=0, Total=992 [2021-11-07 01:40:36,057 INFO L87 Difference]: Start difference. First operand 39 states and 51 transitions. Second operand has 24 states, 24 states have (on average 2.75) internal successors, (66), 24 states have internal predecessors, (66), 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 01:40:36,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:40:36,402 INFO L93 Difference]: Finished difference Result 110 states and 166 transitions. [2021-11-07 01:40:36,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-07 01:40:36,402 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.75) internal successors, (66), 24 states have internal predecessors, (66), 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 37 [2021-11-07 01:40:36,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:40:36,403 INFO L225 Difference]: With dead ends: 110 [2021-11-07 01:40:36,403 INFO L226 Difference]: Without dead ends: 72 [2021-11-07 01:40:36,405 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 399 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=452, Invalid=1354, Unknown=0, NotChecked=0, Total=1806 [2021-11-07 01:40:36,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-11-07 01:40:36,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2021-11-07 01:40:36,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.3380281690140845) internal successors, (95), 71 states have internal predecessors, (95), 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 01:40:36,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 95 transitions. [2021-11-07 01:40:36,420 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 95 transitions. Word has length 37 [2021-11-07 01:40:36,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:40:36,421 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 95 transitions. [2021-11-07 01:40:36,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.75) internal successors, (66), 24 states have internal predecessors, (66), 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 01:40:36,422 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 95 transitions. [2021-11-07 01:40:36,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-07 01:40:36,426 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:40:36,426 INFO L513 BasicCegarLoop]: trace histogram [21, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:40:36,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8599bd17-1fa4-46b9-82e9-b1ea1bddbd41/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:40:36,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8599bd17-1fa4-46b9-82e9-b1ea1bddbd41/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable99 [2021-11-07 01:40:36,640 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:40:36,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:40:36,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1353477890, now seen corresponding path program 4 times [2021-11-07 01:40:36,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:40:36,641 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787816563] [2021-11-07 01:40:36,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:40:36,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:40:36,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:40:37,009 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2021-11-07 01:40:37,009 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:40:37,009 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787816563] [2021-11-07 01:40:37,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787816563] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:40:37,009 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757486622] [2021-11-07 01:40:37,009 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 01:40:37,010 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:40:37,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8599bd17-1fa4-46b9-82e9-b1ea1bddbd41/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:40:37,011 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8599bd17-1fa4-46b9-82e9-b1ea1bddbd41/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:40:37,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8599bd17-1fa4-46b9-82e9-b1ea1bddbd41/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-07 01:40:37,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:40:37,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-07 01:40:37,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:40:37,365 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2021-11-07 01:40:37,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:40:38,170 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2021-11-07 01:40:38,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757486622] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:40:38,171 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1463585243] [2021-11-07 01:40:38,173 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-07 01:40:38,173 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 01:40:38,173 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 01:40:38,173 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 01:40:38,174 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 01:40:38,180 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:38,180 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:38,181 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:38,181 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 01:40:38,182 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:38,183 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:38,183 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 01:40:38,185 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 125 [2021-11-07 01:40:38,188 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_15|], 21=[|v_#valid_26|]} [2021-11-07 01:40:38,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:38,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:38,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:38,202 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 01:40:38,203 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:38,206 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:40:38,207 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:38,207 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:40:38,208 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:40:38,208 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:38,211 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:38,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:38,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:38,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:38,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:38,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:38,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:38,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:38,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:38,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:38,230 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 01:40:38,231 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:38,233 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 01:40:38,234 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:38,234 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 01:40:38,235 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 01:40:38,235 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:38,237 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:38,239 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:38,240 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-07 01:40:38,240 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:40:38,241 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:122, output treesize:97 [2021-11-07 01:40:38,244 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.7 percent of original size [2021-11-07 01:40:38,246 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:38,247 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:38,248 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:38,248 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:38,249 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-07 01:40:38,249 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-07 01:40:38,250 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:38,250 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:38,251 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:38,251 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:38,252 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-07 01:40:38,252 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-07 01:40:38,253 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:38,253 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:38,254 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-07 01:40:38,255 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 125 [2021-11-07 01:40:38,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:38,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:38,266 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 35 [2021-11-07 01:40:38,267 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:38,268 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-07 01:40:38,269 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:38,269 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-07 01:40:38,270 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:40:38,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:38,273 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:38,275 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:38,277 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 125 [2021-11-07 01:40:38,277 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:40:38,278 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:123, output treesize:125 [2021-11-07 01:40:38,280 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:38,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:38,294 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:38,309 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:38,313 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:38,315 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:38,318 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:38,321 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:38,321 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:38,322 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:38,323 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-07 01:40:38,324 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:38,324 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:38,325 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-07 01:40:38,327 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 261 [2021-11-07 01:40:38,327 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:38,330 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:38,332 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 242 [2021-11-07 01:40:38,334 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 243 [2021-11-07 01:40:38,334 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:38,335 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:38,336 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:38,336 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:38,337 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-07 01:40:38,337 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-07 01:40:38,341 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:38,344 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:38,346 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:38,346 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:38,347 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:38,348 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:38,348 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-07 01:40:38,349 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-07 01:40:38,349 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:38,349 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:38,351 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:38,352 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:38,352 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-07 01:40:38,353 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-11-07 01:40:38,353 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:38,354 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:38,355 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-11-07 01:40:38,356 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:38,356 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:38,357 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:38,357 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:38,358 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-07 01:40:38,358 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-07 01:40:38,359 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:38,359 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:38,360 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:38,361 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:38,361 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-07 01:40:38,362 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-07 01:40:38,362 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:38,363 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:38,363 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-07 01:40:38,366 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 277 [2021-11-07 01:40:38,366 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:38,368 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:38,370 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 250 [2021-11-07 01:40:38,373 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 306 [2021-11-07 01:40:38,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:38,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:38,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 35 [2021-11-07 01:40:38,392 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:38,393 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-07 01:40:38,393 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:38,394 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-07 01:40:38,394 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:40:38,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:38,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:38,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:38,408 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 55 [2021-11-07 01:40:38,408 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:38,410 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-11-07 01:40:38,411 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:38,411 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-11-07 01:40:38,411 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 01:40:38,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:38,429 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:38,466 INFO L180 QuantifierPusher]: treesize reduction 94, result has 74.9 percent of original size [2021-11-07 01:40:38,470 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 291 [2021-11-07 01:40:38,471 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-07 01:40:38,472 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:381, output treesize:291 [2021-11-07 01:40:38,475 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:38,494 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:38,495 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:38,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:38,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:38,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:38,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:38,507 INFO L180 QuantifierPusher]: treesize reduction 36, result has 64.7 percent of original size [2021-11-07 01:40:38,510 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:38,511 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:38,511 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:38,512 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:38,512 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:40:38,513 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-07 01:40:38,513 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:38,514 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:38,514 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-07 01:40:38,515 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-11-07 01:40:38,520 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-07 01:40:38,521 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:38,521 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 01:40:38,521 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:38,522 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 01:40:38,522 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:40:38,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:38,524 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:38,525 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:38,526 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-11-07 01:40:38,526 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:40:38,527 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:61, output treesize:63 [2021-11-07 01:40:38,530 INFO L180 QuantifierPusher]: treesize reduction 40, result has 48.7 percent of original size [2021-11-07 01:40:38,532 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-07 01:40:38,535 INFO L180 QuantifierPusher]: treesize reduction 12, result has 80.0 percent of original size [2021-11-07 01:40:38,536 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-11-07 01:40:38,538 INFO L180 QuantifierPusher]: treesize reduction 11, result has 81.4 percent of original size [2021-11-07 01:40:38,539 INFO L185 QuantifierPusher]: treesize reduction 41, result has 2.4 percent of original size 1 [2021-11-07 01:40:38,541 INFO L180 QuantifierPusher]: treesize reduction 7, result has 93.2 percent of original size [2021-11-07 01:40:38,548 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 91 [2021-11-07 01:40:38,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:38,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:38,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:38,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:38,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:38,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:38,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:38,578 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:38,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:38,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:38,587 INFO L180 QuantifierPusher]: treesize reduction 41, result has 51.2 percent of original size [2021-11-07 01:40:38,589 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-11-07 01:40:38,590 INFO L180 QuantifierPusher]: treesize reduction 4, result has 92.0 percent of original size [2021-11-07 01:40:38,591 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-07 01:40:38,594 INFO L180 QuantifierPusher]: treesize reduction 40, result has 69.5 percent of original size [2021-11-07 01:40:38,595 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-11-07 01:40:38,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:38,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:38,611 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:38,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:38,630 INFO L180 QuantifierPusher]: treesize reduction 41, result has 51.2 percent of original size [2021-11-07 01:40:38,631 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-11-07 01:40:38,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:38,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:38,639 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:38,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:38,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:38,654 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:38,657 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:38,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:38,680 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 01:40:39,743 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 01:40:39,744 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 01:40:39,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 45 [2021-11-07 01:40:39,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633244567] [2021-11-07 01:40:39,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-11-07 01:40:39,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:40:39,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-11-07 01:40:39,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1079, Invalid=1783, Unknown=0, NotChecked=0, Total=2862 [2021-11-07 01:40:39,748 INFO L87 Difference]: Start difference. First operand 72 states and 95 transitions. Second operand has 46 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 45 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 01:40:40,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:40:40,241 INFO L93 Difference]: Finished difference Result 351 states and 488 transitions. [2021-11-07 01:40:40,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-11-07 01:40:40,241 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 45 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) Word has length 70 [2021-11-07 01:40:40,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:40:40,245 INFO L225 Difference]: With dead ends: 351 [2021-11-07 01:40:40,245 INFO L226 Difference]: Without dead ends: 302 [2021-11-07 01:40:40,247 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 520 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1079, Invalid=1783, Unknown=0, NotChecked=0, Total=2862 [2021-11-07 01:40:40,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2021-11-07 01:40:40,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 95. [2021-11-07 01:40:40,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.2553191489361701) internal successors, (118), 94 states have internal predecessors, (118), 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 01:40:40,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 118 transitions. [2021-11-07 01:40:40,263 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 118 transitions. Word has length 70 [2021-11-07 01:40:40,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:40:40,263 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 118 transitions. [2021-11-07 01:40:40,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 45 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 01:40:40,264 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 118 transitions. [2021-11-07 01:40:40,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-07 01:40:40,265 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:40:40,265 INFO L513 BasicCegarLoop]: trace histogram [44, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:40:40,304 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8599bd17-1fa4-46b9-82e9-b1ea1bddbd41/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:40:40,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8599bd17-1fa4-46b9-82e9-b1ea1bddbd41/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable147 [2021-11-07 01:40:40,479 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:40:40,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:40:40,479 INFO L85 PathProgramCache]: Analyzing trace with hash 209676283, now seen corresponding path program 5 times [2021-11-07 01:40:40,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:40:40,480 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147594123] [2021-11-07 01:40:40,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:40:40,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:40:40,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:40:41,474 INFO L134 CoverageAnalysis]: Checked inductivity of 1410 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2021-11-07 01:40:41,475 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:40:41,475 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147594123] [2021-11-07 01:40:41,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147594123] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:40:41,475 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152630058] [2021-11-07 01:40:41,475 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 01:40:41,476 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:40:41,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8599bd17-1fa4-46b9-82e9-b1ea1bddbd41/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:40:41,477 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8599bd17-1fa4-46b9-82e9-b1ea1bddbd41/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:40:41,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8599bd17-1fa4-46b9-82e9-b1ea1bddbd41/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-07 01:40:41,635 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-07 01:40:41,635 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:40:41,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:40:41,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:40:41,944 INFO L134 CoverageAnalysis]: Checked inductivity of 1410 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 1370 trivial. 0 not checked. [2021-11-07 01:40:41,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:40:42,175 INFO L134 CoverageAnalysis]: Checked inductivity of 1410 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 1370 trivial. 0 not checked. [2021-11-07 01:40:42,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [152630058] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:40:42,175 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-11-07 01:40:42,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [46] total 52 [2021-11-07 01:40:42,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837412982] [2021-11-07 01:40:42,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 01:40:42,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:40:42,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 01:40:42,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1187, Invalid=1465, Unknown=0, NotChecked=0, Total=2652 [2021-11-07 01:40:42,178 INFO L87 Difference]: Start difference. First operand 95 states and 118 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:42,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:40:42,397 INFO L93 Difference]: Finished difference Result 215 states and 315 transitions. [2021-11-07 01:40:42,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 01:40:42,398 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-07 01:40:42,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:40:42,401 INFO L225 Difference]: With dead ends: 215 [2021-11-07 01:40:42,401 INFO L226 Difference]: Without dead ends: 207 [2021-11-07 01:40:42,403 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1267, Invalid=1925, Unknown=0, NotChecked=0, Total=3192 [2021-11-07 01:40:42,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-11-07 01:40:42,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 98. [2021-11-07 01:40:42,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 1.2783505154639174) internal successors, (124), 97 states have internal predecessors, (124), 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 01:40:42,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 124 transitions. [2021-11-07 01:40:42,422 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 124 transitions. Word has length 93 [2021-11-07 01:40:42,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:40:42,422 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 124 transitions. [2021-11-07 01:40:42,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:42,423 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 124 transitions. [2021-11-07 01:40:42,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-07 01:40:42,424 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:40:42,425 INFO L513 BasicCegarLoop]: trace histogram [44, 20, 20, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:40:42,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8599bd17-1fa4-46b9-82e9-b1ea1bddbd41/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:40:42,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8599bd17-1fa4-46b9-82e9-b1ea1bddbd41/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:40:42,649 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:40:42,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:40:42,649 INFO L85 PathProgramCache]: Analyzing trace with hash -240838662, now seen corresponding path program 6 times [2021-11-07 01:40:42,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:40:42,650 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400661813] [2021-11-07 01:40:42,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:40:42,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:40:42,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:40:43,538 INFO L134 CoverageAnalysis]: Checked inductivity of 1476 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 486 trivial. 0 not checked. [2021-11-07 01:40:43,538 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:40:43,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400661813] [2021-11-07 01:40:43,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400661813] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:40:43,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131368720] [2021-11-07 01:40:43,538 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 01:40:43,539 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:40:43,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8599bd17-1fa4-46b9-82e9-b1ea1bddbd41/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:40:43,540 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8599bd17-1fa4-46b9-82e9-b1ea1bddbd41/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:40:43,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8599bd17-1fa4-46b9-82e9-b1ea1bddbd41/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-07 01:40:43,808 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 01:40:43,808 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:40:43,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-07 01:40:43,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:40:44,106 INFO L134 CoverageAnalysis]: Checked inductivity of 1476 backedges. 0 proven. 481 refuted. 0 times theorem prover too weak. 995 trivial. 0 not checked. [2021-11-07 01:40:44,106 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:40:45,241 INFO L134 CoverageAnalysis]: Checked inductivity of 1476 backedges. 0 proven. 481 refuted. 0 times theorem prover too weak. 995 trivial. 0 not checked. [2021-11-07 01:40:45,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [131368720] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:40:45,242 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1614049154] [2021-11-07 01:40:45,244 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-07 01:40:45,244 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 01:40:45,245 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 01:40:45,245 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 01:40:45,245 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 01:40:45,252 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:45,253 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:45,253 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:45,253 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 01:40:45,254 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:45,255 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:45,255 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 01:40:45,256 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 125 [2021-11-07 01:40:45,259 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_16|], 21=[|v_#valid_27|]} [2021-11-07 01:40:45,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:45,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:45,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:45,269 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 01:40:45,269 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:45,270 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:40:45,270 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:45,271 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:40:45,271 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:40:45,271 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:45,274 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:45,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:45,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:45,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:45,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:45,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:45,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:45,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:45,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:45,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:45,302 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 01:40:45,303 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:45,305 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 01:40:45,305 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:45,306 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 01:40:45,306 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 01:40:45,306 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:45,309 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:45,312 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:45,313 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-07 01:40:45,313 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:40:45,314 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:122, output treesize:97 [2021-11-07 01:40:45,317 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.7 percent of original size [2021-11-07 01:40:45,319 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:45,320 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:45,321 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:45,321 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:45,322 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-07 01:40:45,322 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-07 01:40:45,323 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:45,323 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:45,324 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:45,325 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:45,325 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-11-07 01:40:45,326 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 01:40:45,326 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:45,326 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:45,327 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-07 01:40:45,328 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 118 [2021-11-07 01:40:45,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:45,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:45,338 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2021-11-07 01:40:45,339 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:45,340 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-07 01:40:45,340 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:45,341 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-07 01:40:45,341 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:40:45,342 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:45,345 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:45,346 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:45,348 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 113 [2021-11-07 01:40:45,349 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:40:45,349 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:116, output treesize:113 [2021-11-07 01:40:45,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:45,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:45,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:45,382 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:45,388 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:45,394 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:45,398 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:45,401 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:45,402 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:45,403 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:45,403 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-07 01:40:45,404 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:45,405 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:45,405 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 01:40:45,408 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 251 [2021-11-07 01:40:45,409 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:45,412 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:45,414 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 232 [2021-11-07 01:40:45,417 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 233 [2021-11-07 01:40:45,417 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:45,418 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:45,421 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:45,421 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:45,422 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-07 01:40:45,423 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-07 01:40:45,426 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:45,429 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:45,431 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:45,431 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:45,432 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:45,433 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:45,433 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-07 01:40:45,434 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-07 01:40:45,434 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:45,435 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:45,436 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:45,436 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:45,437 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-07 01:40:45,438 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-07 01:40:45,438 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:45,439 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:45,440 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-07 01:40:45,441 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:45,442 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:45,443 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:45,443 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:45,444 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-07 01:40:45,445 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-07 01:40:45,445 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:45,446 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:45,447 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:45,447 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:45,448 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 01:40:45,449 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-11-07 01:40:45,449 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:45,450 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:45,450 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-11-07 01:40:45,454 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 267 [2021-11-07 01:40:45,454 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:45,457 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:45,459 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 240 [2021-11-07 01:40:45,463 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 296 [2021-11-07 01:40:45,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:45,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:45,485 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 35 [2021-11-07 01:40:45,485 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:45,486 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-07 01:40:45,487 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:45,487 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-07 01:40:45,488 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:40:45,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:45,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:45,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:45,504 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 50 [2021-11-07 01:40:45,505 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:45,507 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-07 01:40:45,507 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:45,515 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-07 01:40:45,515 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 01:40:45,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:45,534 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:45,543 INFO L180 QuantifierPusher]: treesize reduction 94, result has 74.2 percent of original size [2021-11-07 01:40:45,548 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 281 [2021-11-07 01:40:45,548 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-07 01:40:45,549 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:371, output treesize:281 [2021-11-07 01:40:45,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:45,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:45,573 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:45,575 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:45,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:45,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:45,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:45,585 INFO L180 QuantifierPusher]: treesize reduction 36, result has 64.7 percent of original size [2021-11-07 01:40:45,588 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:45,588 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:45,589 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:45,589 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:45,590 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:40:45,590 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-07 01:40:45,591 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:45,591 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:45,591 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-07 01:40:45,592 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-11-07 01:40:45,598 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-07 01:40:45,598 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:45,599 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 01:40:45,599 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:45,599 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 01:40:45,600 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:40:45,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:45,602 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:45,603 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:45,604 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-11-07 01:40:45,604 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:40:45,605 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:61, output treesize:63 [2021-11-07 01:40:45,608 INFO L180 QuantifierPusher]: treesize reduction 40, result has 48.7 percent of original size [2021-11-07 01:40:45,609 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-07 01:40:45,613 INFO L180 QuantifierPusher]: treesize reduction 12, result has 80.0 percent of original size [2021-11-07 01:40:45,614 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-11-07 01:40:45,616 INFO L180 QuantifierPusher]: treesize reduction 11, result has 81.4 percent of original size [2021-11-07 01:40:45,617 INFO L185 QuantifierPusher]: treesize reduction 41, result has 2.4 percent of original size 1 [2021-11-07 01:40:45,619 INFO L180 QuantifierPusher]: treesize reduction 7, result has 93.2 percent of original size [2021-11-07 01:40:45,621 INFO L185 QuantifierPusher]: treesize reduction 5, result has 94.5 percent of original size 86 [2021-11-07 01:40:45,621 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:45,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:45,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:45,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:45,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:45,657 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:45,658 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:45,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:45,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:45,663 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:45,669 INFO L180 QuantifierPusher]: treesize reduction 41, result has 51.2 percent of original size [2021-11-07 01:40:45,670 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-11-07 01:40:45,672 INFO L180 QuantifierPusher]: treesize reduction 4, result has 92.0 percent of original size [2021-11-07 01:40:45,674 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-07 01:40:45,676 INFO L180 QuantifierPusher]: treesize reduction 40, result has 69.5 percent of original size [2021-11-07 01:40:45,678 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-11-07 01:40:45,679 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:45,683 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:45,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:45,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:45,698 INFO L180 QuantifierPusher]: treesize reduction 41, result has 51.2 percent of original size [2021-11-07 01:40:45,699 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-11-07 01:40:45,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:45,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:45,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:45,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:45,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:45,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:45,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:45,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:45,755 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 01:40:46,940 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 01:40:46,940 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 01:40:46,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 24, 24] total 69 [2021-11-07 01:40:46,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391375912] [2021-11-07 01:40:46,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2021-11-07 01:40:46,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:40:46,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2021-11-07 01:40:46,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2324, Invalid=3528, Unknown=0, NotChecked=0, Total=5852 [2021-11-07 01:40:46,947 INFO L87 Difference]: Start difference. First operand 98 states and 124 transitions. Second operand has 69 states, 69 states have (on average 2.1449275362318843) internal successors, (148), 69 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:49,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:40:49,253 INFO L93 Difference]: Finished difference Result 582 states and 927 transitions. [2021-11-07 01:40:49,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2021-11-07 01:40:49,254 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 2.1449275362318843) internal successors, (148), 69 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-07 01:40:49,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:40:49,258 INFO L225 Difference]: With dead ends: 582 [2021-11-07 01:40:49,258 INFO L226 Difference]: Without dead ends: 485 [2021-11-07 01:40:49,264 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2182 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=4484, Invalid=10278, Unknown=0, NotChecked=0, Total=14762 [2021-11-07 01:40:49,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2021-11-07 01:40:49,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 210. [2021-11-07 01:40:49,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 209 states have (on average 1.3444976076555024) internal successors, (281), 209 states have internal predecessors, (281), 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 01:40:49,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 281 transitions. [2021-11-07 01:40:49,319 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 281 transitions. Word has length 96 [2021-11-07 01:40:49,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:40:49,320 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 281 transitions. [2021-11-07 01:40:49,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 2.1449275362318843) internal successors, (148), 69 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:49,321 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 281 transitions. [2021-11-07 01:40:49,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2021-11-07 01:40:49,325 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:40:49,326 INFO L513 BasicCegarLoop]: trace histogram [66, 65, 65, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:40:49,355 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8599bd17-1fa4-46b9-82e9-b1ea1bddbd41/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:40:49,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8599bd17-1fa4-46b9-82e9-b1ea1bddbd41/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:40:49,534 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:40:49,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:40:49,534 INFO L85 PathProgramCache]: Analyzing trace with hash -176619446, now seen corresponding path program 7 times [2021-11-07 01:40:49,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:40:49,535 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553046562] [2021-11-07 01:40:49,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:40:49,535 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:40:49,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:40:51,661 INFO L134 CoverageAnalysis]: Checked inductivity of 6702 backedges. 0 proven. 2211 refuted. 0 times theorem prover too weak. 4491 trivial. 0 not checked. [2021-11-07 01:40:51,661 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:40:51,662 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553046562] [2021-11-07 01:40:51,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553046562] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:40:51,662 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548109131] [2021-11-07 01:40:51,662 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 01:40:51,662 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:40:51,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8599bd17-1fa4-46b9-82e9-b1ea1bddbd41/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:40:51,672 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8599bd17-1fa4-46b9-82e9-b1ea1bddbd41/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:40:51,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8599bd17-1fa4-46b9-82e9-b1ea1bddbd41/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-07 01:40:52,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:40:52,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 928 conjuncts, 68 conjunts are in the unsatisfiable core [2021-11-07 01:40:52,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:40:52,569 INFO L134 CoverageAnalysis]: Checked inductivity of 6702 backedges. 0 proven. 2211 refuted. 0 times theorem prover too weak. 4491 trivial. 0 not checked. [2021-11-07 01:40:52,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:40:57,415 INFO L134 CoverageAnalysis]: Checked inductivity of 6702 backedges. 0 proven. 2211 refuted. 0 times theorem prover too weak. 4491 trivial. 0 not checked. [2021-11-07 01:40:57,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1548109131] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:40:57,415 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1551127239] [2021-11-07 01:40:57,418 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-07 01:40:57,418 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 01:40:57,418 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 01:40:57,419 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 01:40:57,419 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 01:40:57,434 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:57,435 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:57,435 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:57,436 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 01:40:57,436 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:57,437 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:57,437 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 01:40:57,438 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 125 [2021-11-07 01:40:57,441 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_17|], 21=[|v_#valid_28|]} [2021-11-07 01:40:57,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:57,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:57,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:57,450 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 01:40:57,450 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:57,451 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:40:57,451 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:57,451 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:40:57,452 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:40:57,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:57,454 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:57,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:57,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:57,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:57,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:57,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:57,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:57,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:57,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:57,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:57,469 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 01:40:57,469 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:57,471 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 01:40:57,472 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:57,472 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 01:40:57,473 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 01:40:57,473 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:57,475 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:57,476 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:57,477 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-07 01:40:57,478 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:40:57,478 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:122, output treesize:97 [2021-11-07 01:40:57,481 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.7 percent of original size [2021-11-07 01:40:57,483 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:57,484 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:57,484 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:57,485 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:57,485 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-07 01:40:57,486 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-07 01:40:57,486 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:57,486 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:57,487 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:57,487 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:57,488 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-07 01:40:57,488 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-07 01:40:57,489 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:57,489 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:57,489 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-07 01:40:57,491 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 125 [2021-11-07 01:40:57,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:57,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:57,500 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 35 [2021-11-07 01:40:57,500 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:57,501 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-07 01:40:57,502 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:57,502 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-07 01:40:57,503 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:40:57,503 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:57,506 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:57,507 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:57,509 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 125 [2021-11-07 01:40:57,509 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:40:57,509 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:123, output treesize:125 [2021-11-07 01:40:57,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:57,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:57,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:57,537 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:57,541 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:57,542 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:57,542 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:57,543 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:57,543 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-07 01:40:57,543 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-07 01:40:57,544 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:57,546 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:57,548 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:57,551 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:57,551 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:57,552 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:57,552 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-07 01:40:57,553 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:57,554 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:57,555 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-07 01:40:57,557 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 261 [2021-11-07 01:40:57,557 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:57,559 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:57,561 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 242 [2021-11-07 01:40:57,564 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 243 [2021-11-07 01:40:57,567 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:57,569 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:57,570 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:57,571 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:57,572 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:57,572 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:57,573 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-07 01:40:57,573 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-07 01:40:57,574 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:57,574 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:57,575 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:57,575 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:57,576 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-07 01:40:57,576 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-11-07 01:40:57,577 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:57,577 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:57,578 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-11-07 01:40:57,579 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:57,579 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:57,580 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:57,580 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:57,581 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-07 01:40:57,582 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-07 01:40:57,582 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:57,582 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:57,583 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:57,583 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:57,584 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-07 01:40:57,584 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-07 01:40:57,585 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:57,585 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:57,586 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-07 01:40:57,588 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 277 [2021-11-07 01:40:57,588 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:57,590 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:57,593 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 250 [2021-11-07 01:40:57,595 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 306 [2021-11-07 01:40:57,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:57,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:57,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:57,617 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 55 [2021-11-07 01:40:57,618 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:57,621 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-11-07 01:40:57,622 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:57,623 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-11-07 01:40:57,623 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:40:57,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:57,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:57,640 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 35 [2021-11-07 01:40:57,641 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:57,644 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-07 01:40:57,645 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:57,645 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-07 01:40:57,646 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 01:40:57,646 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:57,662 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:57,670 INFO L180 QuantifierPusher]: treesize reduction 94, result has 74.9 percent of original size [2021-11-07 01:40:57,674 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 291 [2021-11-07 01:40:57,675 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-07 01:40:57,675 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:381, output treesize:291 [2021-11-07 01:40:57,679 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:57,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:57,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:57,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:57,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:57,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:57,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:57,727 INFO L180 QuantifierPusher]: treesize reduction 36, result has 64.7 percent of original size [2021-11-07 01:40:57,729 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:57,730 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:57,730 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:57,730 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:57,731 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:40:57,731 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-07 01:40:57,731 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:57,732 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:57,732 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-07 01:40:57,733 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-11-07 01:40:57,745 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-07 01:40:57,746 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:57,746 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 01:40:57,747 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:57,747 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 01:40:57,747 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:40:57,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:57,749 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:57,750 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:57,751 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-11-07 01:40:57,751 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:40:57,751 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:61, output treesize:63 [2021-11-07 01:40:57,755 INFO L180 QuantifierPusher]: treesize reduction 40, result has 48.7 percent of original size [2021-11-07 01:40:57,756 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-07 01:40:57,763 INFO L180 QuantifierPusher]: treesize reduction 12, result has 80.0 percent of original size [2021-11-07 01:40:57,765 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-11-07 01:40:57,769 INFO L180 QuantifierPusher]: treesize reduction 11, result has 81.4 percent of original size [2021-11-07 01:40:57,770 INFO L185 QuantifierPusher]: treesize reduction 41, result has 2.4 percent of original size 1 [2021-11-07 01:40:57,772 INFO L180 QuantifierPusher]: treesize reduction 7, result has 93.2 percent of original size [2021-11-07 01:40:57,774 INFO L185 QuantifierPusher]: treesize reduction 5, result has 94.5 percent of original size 86 [2021-11-07 01:40:57,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:57,778 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:57,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:57,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:57,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:57,798 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:57,809 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:57,811 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:57,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:57,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:57,820 INFO L180 QuantifierPusher]: treesize reduction 41, result has 51.2 percent of original size [2021-11-07 01:40:57,822 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-11-07 01:40:57,823 INFO L180 QuantifierPusher]: treesize reduction 4, result has 92.0 percent of original size [2021-11-07 01:40:57,824 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-07 01:40:57,826 INFO L180 QuantifierPusher]: treesize reduction 40, result has 69.5 percent of original size [2021-11-07 01:40:57,828 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-11-07 01:40:57,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:57,833 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:57,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:57,838 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:57,845 INFO L180 QuantifierPusher]: treesize reduction 41, result has 51.2 percent of original size [2021-11-07 01:40:57,846 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-11-07 01:40:57,847 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:57,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:57,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:57,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:57,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:57,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:57,879 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:57,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:57,902 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 01:40:59,181 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 01:40:59,181 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 01:40:59,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68, 68] total 135 [2021-11-07 01:40:59,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827600405] [2021-11-07 01:40:59,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 136 states [2021-11-07 01:40:59,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:40:59,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2021-11-07 01:40:59,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9224, Invalid=11368, Unknown=0, NotChecked=0, Total=20592 [2021-11-07 01:40:59,193 INFO L87 Difference]: Start difference. First operand 210 states and 281 transitions. Second operand has 136 states, 136 states have (on average 1.0661764705882353) internal successors, (145), 135 states have internal predecessors, (145), 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 01:41:03,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:41:03,772 INFO L93 Difference]: Finished difference Result 1445 states and 2132 transitions. [2021-11-07 01:41:03,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2021-11-07 01:41:03,773 INFO L78 Accepts]: Start accepts. Automaton has has 136 states, 136 states have (on average 1.0661764705882353) internal successors, (145), 135 states have internal predecessors, (145), 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 208 [2021-11-07 01:41:03,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:41:03,784 INFO L225 Difference]: With dead ends: 1445 [2021-11-07 01:41:03,785 INFO L226 Difference]: Without dead ends: 1303 [2021-11-07 01:41:03,794 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 690 GetRequests, 548 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1600 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=9224, Invalid=11368, Unknown=0, NotChecked=0, Total=20592 [2021-11-07 01:41:03,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1303 states. [2021-11-07 01:41:03,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1303 to 278. [2021-11-07 01:41:03,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 277 states have (on average 1.259927797833935) internal successors, (349), 277 states have internal predecessors, (349), 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 01:41:03,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 349 transitions. [2021-11-07 01:41:03,893 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 349 transitions. Word has length 208 [2021-11-07 01:41:03,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:41:03,894 INFO L470 AbstractCegarLoop]: Abstraction has 278 states and 349 transitions. [2021-11-07 01:41:03,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 136 states, 136 states have (on average 1.0661764705882353) internal successors, (145), 135 states have internal predecessors, (145), 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 01:41:03,895 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 349 transitions. [2021-11-07 01:41:03,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2021-11-07 01:41:03,908 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:41:03,909 INFO L513 BasicCegarLoop]: trace histogram [134, 65, 65, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:41:03,952 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8599bd17-1fa4-46b9-82e9-b1ea1bddbd41/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:41:04,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8599bd17-1fa4-46b9-82e9-b1ea1bddbd41/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable224 [2021-11-07 01:41:04,125 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:41:04,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:41:04,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1449774198, now seen corresponding path program 8 times [2021-11-07 01:41:04,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:41:04,126 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295257295] [2021-11-07 01:41:04,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:41:04,126 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:41:04,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:41:11,038 INFO L134 CoverageAnalysis]: Checked inductivity of 13536 backedges. 0 proven. 9045 refuted. 0 times theorem prover too weak. 4491 trivial. 0 not checked. [2021-11-07 01:41:11,038 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:41:11,039 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295257295] [2021-11-07 01:41:11,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295257295] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:41:11,039 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600482426] [2021-11-07 01:41:11,039 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 01:41:11,039 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:41:11,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8599bd17-1fa4-46b9-82e9-b1ea1bddbd41/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:41:11,040 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8599bd17-1fa4-46b9-82e9-b1ea1bddbd41/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:41:11,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8599bd17-1fa4-46b9-82e9-b1ea1bddbd41/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-07 01:41:11,442 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-07 01:41:11,442 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:41:11,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:41:11,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:41:12,356 INFO L134 CoverageAnalysis]: Checked inductivity of 13536 backedges. 263 proven. 3 refuted. 0 times theorem prover too weak. 13270 trivial. 0 not checked. [2021-11-07 01:41:12,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:41:13,241 INFO L134 CoverageAnalysis]: Checked inductivity of 13536 backedges. 263 proven. 3 refuted. 0 times theorem prover too weak. 13270 trivial. 0 not checked. [2021-11-07 01:41:13,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [600482426] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:41:13,242 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1335324494] [2021-11-07 01:41:13,245 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-07 01:41:13,245 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 01:41:13,246 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 01:41:13,246 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 01:41:13,246 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 01:41:13,258 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:13,259 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:41:13,259 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:13,259 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 01:41:13,260 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:41:13,260 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:13,261 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 01:41:13,262 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 125 [2021-11-07 01:41:13,266 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_18|], 21=[|v_#valid_29|]} [2021-11-07 01:41:13,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:41:13,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:41:13,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:41:13,278 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 01:41:13,279 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:13,280 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:41:13,281 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:13,282 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:41:13,282 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:41:13,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:13,284 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:13,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:41:13,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:41:13,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:41:13,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:41:13,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:41:13,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:41:13,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:41:13,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:41:13,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:41:13,298 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 01:41:13,299 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:13,301 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 01:41:13,301 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:13,302 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 01:41:13,302 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 01:41:13,302 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:13,304 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:13,305 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:13,305 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-07 01:41:13,306 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:41:13,306 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:122, output treesize:97 [2021-11-07 01:41:13,308 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.7 percent of original size [2021-11-07 01:41:13,310 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:41:13,311 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:13,311 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:41:13,311 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:13,312 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-11-07 01:41:13,312 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 01:41:13,312 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:41:13,314 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:13,314 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:41:13,314 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:13,315 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-07 01:41:13,316 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-07 01:41:13,316 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:41:13,317 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:13,317 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-07 01:41:13,319 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 118 [2021-11-07 01:41:13,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:41:13,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:41:13,328 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2021-11-07 01:41:13,329 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:13,330 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-07 01:41:13,330 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:13,331 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-07 01:41:13,331 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:41:13,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:13,334 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:13,335 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:13,337 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 113 [2021-11-07 01:41:13,337 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:41:13,337 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:116, output treesize:113 [2021-11-07 01:41:13,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:13,347 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:13,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:13,366 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:13,370 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:41:13,371 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:13,372 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:41:13,372 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:13,373 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-07 01:41:13,373 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-07 01:41:13,374 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:41:13,376 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:13,379 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:41:13,381 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:13,382 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:41:13,383 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:13,383 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-07 01:41:13,384 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:41:13,385 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:13,386 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 01:41:13,388 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 251 [2021-11-07 01:41:13,389 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:41:13,391 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:13,393 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 232 [2021-11-07 01:41:13,395 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 233 [2021-11-07 01:41:13,399 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:41:13,402 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:13,403 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:41:13,404 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:13,404 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:41:13,405 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:13,406 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-07 01:41:13,406 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-07 01:41:13,407 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:41:13,407 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:13,408 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:41:13,408 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:13,409 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 01:41:13,409 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-11-07 01:41:13,410 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:41:13,410 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:13,411 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-11-07 01:41:13,412 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:41:13,413 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:13,414 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:41:13,421 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:13,422 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-07 01:41:13,422 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-07 01:41:13,423 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:41:13,423 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:13,424 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:41:13,424 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:13,425 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-07 01:41:13,426 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-07 01:41:13,426 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:41:13,427 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:13,427 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-07 01:41:13,430 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 267 [2021-11-07 01:41:13,431 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:41:13,433 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:13,435 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 240 [2021-11-07 01:41:13,438 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 296 [2021-11-07 01:41:13,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:41:13,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:41:13,457 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 35 [2021-11-07 01:41:13,458 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:13,459 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-07 01:41:13,460 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:13,460 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-07 01:41:13,460 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:41:13,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:41:13,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:41:13,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:41:13,474 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 50 [2021-11-07 01:41:13,475 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:13,476 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-07 01:41:13,477 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:13,477 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-07 01:41:13,477 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 01:41:13,478 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:13,493 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:13,500 INFO L180 QuantifierPusher]: treesize reduction 94, result has 74.2 percent of original size [2021-11-07 01:41:13,503 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 281 [2021-11-07 01:41:13,504 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-07 01:41:13,504 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:371, output treesize:281 [2021-11-07 01:41:13,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:13,525 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:13,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:13,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:13,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:13,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:13,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:13,536 INFO L180 QuantifierPusher]: treesize reduction 36, result has 64.7 percent of original size [2021-11-07 01:41:13,537 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:41:13,538 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:13,538 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:41:13,538 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:13,539 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:41:13,540 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-07 01:41:13,540 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:41:13,541 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:13,541 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-07 01:41:13,542 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-11-07 01:41:13,547 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-07 01:41:13,547 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:13,547 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 01:41:13,548 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:13,548 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 01:41:13,548 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:41:13,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:13,550 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:13,551 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:41:13,552 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-11-07 01:41:13,552 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:41:13,552 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:61, output treesize:63 [2021-11-07 01:41:13,557 INFO L180 QuantifierPusher]: treesize reduction 40, result has 48.7 percent of original size [2021-11-07 01:41:13,558 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-07 01:41:13,561 INFO L180 QuantifierPusher]: treesize reduction 12, result has 80.0 percent of original size [2021-11-07 01:41:13,562 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-11-07 01:41:13,564 INFO L180 QuantifierPusher]: treesize reduction 11, result has 81.4 percent of original size [2021-11-07 01:41:13,565 INFO L185 QuantifierPusher]: treesize reduction 41, result has 2.4 percent of original size 1 [2021-11-07 01:41:13,566 INFO L180 QuantifierPusher]: treesize reduction 7, result has 93.2 percent of original size [2021-11-07 01:41:13,571 INFO L185 QuantifierPusher]: treesize reduction 5, result has 94.5 percent of original size 86 [2021-11-07 01:41:13,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:13,575 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:13,578 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:13,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:13,587 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:13,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:13,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:13,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:13,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:13,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:13,604 INFO L180 QuantifierPusher]: treesize reduction 41, result has 51.2 percent of original size [2021-11-07 01:41:13,605 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-11-07 01:41:13,606 INFO L180 QuantifierPusher]: treesize reduction 4, result has 92.0 percent of original size [2021-11-07 01:41:13,609 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-07 01:41:13,612 INFO L180 QuantifierPusher]: treesize reduction 40, result has 69.5 percent of original size [2021-11-07 01:41:13,614 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-11-07 01:41:13,614 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:13,616 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:13,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:13,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:13,624 INFO L180 QuantifierPusher]: treesize reduction 41, result has 51.2 percent of original size [2021-11-07 01:41:13,625 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-11-07 01:41:13,626 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:13,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:13,630 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:13,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:13,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:13,639 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:13,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:13,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:41:13,658 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 01:41:15,430 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 01:41:15,430 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 01:41:15,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [136, 7, 7] total 146 [2021-11-07 01:41:15,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013313308] [2021-11-07 01:41:15,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 146 states [2021-11-07 01:41:15,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:41:15,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants. [2021-11-07 01:41:15,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9940, Invalid=13622, Unknown=0, NotChecked=0, Total=23562 [2021-11-07 01:41:15,436 INFO L87 Difference]: Start difference. First operand 278 states and 349 transitions. Second operand has 146 states, 146 states have (on average 1.1095890410958904) internal successors, (162), 146 states have internal predecessors, (162), 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 01:43:45,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:43:45,541 INFO L93 Difference]: Finished difference Result 16935 states and 25626 transitions. [2021-11-07 01:43:45,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1075 states. [2021-11-07 01:43:45,542 INFO L78 Accepts]: Start accepts. Automaton has has 146 states, 146 states have (on average 1.1095890410958904) internal successors, (162), 146 states have internal predecessors, (162), 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 276 [2021-11-07 01:43:45,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:43:45,670 INFO L225 Difference]: With dead ends: 16935 [2021-11-07 01:43:45,670 INFO L226 Difference]: Without dead ends: 16659 [2021-11-07 01:43:46,010 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1898 GetRequests, 810 SyntacticMatches, 0 SemanticMatches, 1088 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456358 ImplicationChecksByTransitivity, 99.8s TimeCoverageRelationStatistics Valid=237290, Invalid=949720, Unknown=0, NotChecked=0, Total=1187010 [2021-11-07 01:43:46,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16659 states. [2021-11-07 01:43:47,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16659 to 819. [2021-11-07 01:43:47,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 819 states, 818 states have (on average 1.6613691931540342) internal successors, (1359), 818 states have internal predecessors, (1359), 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 01:43:47,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1359 transitions. [2021-11-07 01:43:47,802 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1359 transitions. Word has length 276 [2021-11-07 01:43:47,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:43:47,803 INFO L470 AbstractCegarLoop]: Abstraction has 819 states and 1359 transitions. [2021-11-07 01:43:47,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 146 states, 146 states have (on average 1.1095890410958904) internal successors, (162), 146 states have internal predecessors, (162), 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 01:43:47,804 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1359 transitions. [2021-11-07 01:43:47,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 818 [2021-11-07 01:43:47,840 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:43:47,841 INFO L513 BasicCegarLoop]: trace histogram [403, 136, 135, 135, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:43:47,888 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8599bd17-1fa4-46b9-82e9-b1ea1bddbd41/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-07 01:43:48,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable262,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8599bd17-1fa4-46b9-82e9-b1ea1bddbd41/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:43:48,061 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:43:48,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:43:48,062 INFO L85 PathProgramCache]: Analyzing trace with hash -249042741, now seen corresponding path program 9 times [2021-11-07 01:43:48,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:43:48,062 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079790815] [2021-11-07 01:43:48,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:43:48,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:43:48,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:43:57,165 INFO L134 CoverageAnalysis]: Checked inductivity of 162949 backedges. 0 proven. 9316 refuted. 0 times theorem prover too weak. 153633 trivial. 0 not checked. [2021-11-07 01:43:57,165 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:43:57,165 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079790815] [2021-11-07 01:43:57,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079790815] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:43:57,166 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918958092] [2021-11-07 01:43:57,166 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 01:43:57,166 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:43:57,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8599bd17-1fa4-46b9-82e9-b1ea1bddbd41/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:43:57,173 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8599bd17-1fa4-46b9-82e9-b1ea1bddbd41/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:43:57,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8599bd17-1fa4-46b9-82e9-b1ea1bddbd41/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-07 01:43:58,604 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 01:43:58,605 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:43:58,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 3833 conjuncts, 138 conjunts are in the unsatisfiable core [2021-11-07 01:43:58,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:44:01,390 INFO L134 CoverageAnalysis]: Checked inductivity of 162949 backedges. 0 proven. 152819 refuted. 0 times theorem prover too weak. 10130 trivial. 0 not checked. [2021-11-07 01:44:01,391 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:44:26,517 INFO L134 CoverageAnalysis]: Checked inductivity of 162949 backedges. 0 proven. 152819 refuted. 0 times theorem prover too weak. 10130 trivial. 0 not checked. [2021-11-07 01:44:26,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918958092] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:44:26,518 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [78083393] [2021-11-07 01:44:26,522 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-07 01:44:26,523 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 01:44:26,523 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 01:44:26,523 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 01:44:26,525 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 01:44:26,535 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:44:26,538 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:44:26,538 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:44:26,539 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 01:44:26,539 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:44:26,540 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:44:26,540 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 01:44:26,542 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 125 [2021-11-07 01:44:26,546 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_19|], 21=[|v_#valid_30|]} [2021-11-07 01:44:26,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:44:26,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:44:26,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:44:26,562 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 01:44:26,562 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:44:26,563 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:44:26,565 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:44:26,566 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:44:26,566 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:44:26,567 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:44:26,570 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:44:26,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:44:26,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:44:26,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:44:26,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:44:26,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:44:26,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:44:26,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:44:26,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:44:26,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:44:26,591 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 01:44:26,592 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:44:26,595 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 01:44:26,596 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:44:26,597 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 01:44:26,597 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 01:44:26,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:44:26,601 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:44:26,603 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:44:26,604 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-07 01:44:26,608 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:44:26,608 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:122, output treesize:97 [2021-11-07 01:44:26,610 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.7 percent of original size [2021-11-07 01:44:26,612 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:44:26,613 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:44:26,613 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:44:26,614 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:44:26,614 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-07 01:44:26,614 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-07 01:44:26,615 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:44:26,615 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:44:26,616 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:44:26,616 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:44:26,617 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-07 01:44:26,617 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-07 01:44:26,618 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:44:26,618 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:44:26,619 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-07 01:44:26,621 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 125 [2021-11-07 01:44:26,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:44:26,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:44:26,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 35 [2021-11-07 01:44:26,640 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:44:26,641 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-07 01:44:26,642 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:44:26,643 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-07 01:44:26,643 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:44:26,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:44:26,647 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:44:26,648 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:44:26,650 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 125 [2021-11-07 01:44:26,650 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:44:26,651 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:123, output treesize:125 [2021-11-07 01:44:26,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:44:26,658 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:44:26,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:44:26,679 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:44:26,684 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:44:26,687 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:44:26,692 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:44:26,695 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:44:26,696 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:44:26,697 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:44:26,698 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-07 01:44:26,699 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:44:26,699 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:44:26,700 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-07 01:44:26,703 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 261 [2021-11-07 01:44:26,704 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:44:26,706 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:44:26,709 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 242 [2021-11-07 01:44:26,711 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 243 [2021-11-07 01:44:26,712 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:44:26,713 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:44:26,714 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:44:26,715 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:44:26,715 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-07 01:44:26,716 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-07 01:44:26,720 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:44:26,723 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:44:26,724 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:44:26,725 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:44:26,726 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:44:26,726 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:44:26,727 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-07 01:44:26,728 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-07 01:44:26,728 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:44:26,729 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:44:26,730 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:44:26,730 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:44:26,731 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-07 01:44:26,732 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-07 01:44:26,732 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:44:26,733 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:44:26,734 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-07 01:44:26,735 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:44:26,736 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:44:26,737 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:44:26,737 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:44:26,738 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-07 01:44:26,739 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-07 01:44:26,739 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:44:26,740 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:44:26,740 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:44:26,741 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:44:26,742 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-07 01:44:26,743 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-11-07 01:44:26,743 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:44:26,744 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:44:26,745 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-11-07 01:44:26,748 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 277 [2021-11-07 01:44:26,749 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:44:26,751 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:44:26,754 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 250 [2021-11-07 01:44:26,757 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 306 [2021-11-07 01:44:26,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:44:26,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:44:26,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:44:26,785 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 55 [2021-11-07 01:44:26,786 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:44:26,788 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-11-07 01:44:26,789 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:44:26,790 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-11-07 01:44:26,790 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:44:26,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:44:26,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:44:26,805 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 35 [2021-11-07 01:44:26,806 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:44:26,807 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-07 01:44:26,808 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:44:26,809 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-07 01:44:26,809 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 01:44:26,810 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:44:26,828 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:44:26,837 INFO L180 QuantifierPusher]: treesize reduction 94, result has 74.9 percent of original size [2021-11-07 01:44:26,841 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 291 [2021-11-07 01:44:26,843 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-07 01:44:26,843 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:381, output treesize:291 [2021-11-07 01:44:26,849 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:44:26,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:44:26,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:44:26,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:44:26,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:44:26,875 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:44:26,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:44:26,886 INFO L180 QuantifierPusher]: treesize reduction 36, result has 64.7 percent of original size [2021-11-07 01:44:26,888 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:44:26,889 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:44:26,889 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:44:26,890 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:44:26,891 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:44:26,891 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-07 01:44:26,892 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:44:26,892 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:44:26,893 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-07 01:44:26,894 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-11-07 01:44:26,903 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-07 01:44:26,903 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:44:26,904 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 01:44:26,904 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:44:26,905 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 01:44:26,905 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:44:26,905 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:44:26,907 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:44:26,908 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:44:26,910 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-11-07 01:44:26,910 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:44:26,911 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:61, output treesize:63 [2021-11-07 01:44:26,915 INFO L180 QuantifierPusher]: treesize reduction 40, result has 48.7 percent of original size [2021-11-07 01:44:26,917 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-07 01:44:26,922 INFO L180 QuantifierPusher]: treesize reduction 12, result has 80.0 percent of original size [2021-11-07 01:44:26,924 INFO L185 QuantifierPusher]: treesize reduction 43, result has 2.3 percent of original size 1 [2021-11-07 01:44:26,925 INFO L180 QuantifierPusher]: treesize reduction 56, result has 1.8 percent of original size [2021-11-07 01:44:26,926 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 01:44:26,928 INFO L180 QuantifierPusher]: treesize reduction 7, result has 93.2 percent of original size [2021-11-07 01:44:26,930 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 91 [2021-11-07 01:44:26,931 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:44:26,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:44:26,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:44:26,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:44:26,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:44:26,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:44:26,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:44:26,972 INFO L180 QuantifierPusher]: treesize reduction 15, result has 89.6 percent of original size [2021-11-07 01:44:26,975 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-11-07 01:44:26,979 INFO L180 QuantifierPusher]: treesize reduction 15, result has 89.6 percent of original size [2021-11-07 01:44:26,985 INFO L185 QuantifierPusher]: treesize reduction 33, result has 71.1 percent of original size 81 [2021-11-07 01:44:26,990 INFO L180 QuantifierPusher]: treesize reduction 11, result has 94.2 percent of original size [2021-11-07 01:44:26,998 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 218 [2021-11-07 01:44:26,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:44:27,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:44:27,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:44:27,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:44:27,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:44:27,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:44:27,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:44:27,026 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:44:27,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:44:27,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:44:27,039 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:44:27,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:44:27,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:44:27,050 INFO L180 QuantifierPusher]: treesize reduction 41, result has 53.9 percent of original size [2021-11-07 01:44:27,052 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-07 01:44:27,053 INFO L180 QuantifierPusher]: treesize reduction 4, result has 92.7 percent of original size [2021-11-07 01:44:27,055 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-07 01:44:27,058 INFO L180 QuantifierPusher]: treesize reduction 45, result has 66.9 percent of original size [2021-11-07 01:44:27,060 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-11-07 01:44:27,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:44:27,070 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:44:27,074 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:44:27,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:44:27,085 INFO L180 QuantifierPusher]: treesize reduction 41, result has 53.9 percent of original size [2021-11-07 01:44:27,086 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-07 01:44:27,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:44:27,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:44:27,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:44:27,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:44:27,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:44:27,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:44:27,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:44:27,222 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:44:27,252 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 01:44:29,950 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 01:44:29,951 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 01:44:29,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [138, 139, 139] total 276 [2021-11-07 01:44:29,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139958751] [2021-11-07 01:44:29,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 276 states [2021-11-07 01:44:29,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:44:29,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 276 interpolants. [2021-11-07 01:44:29,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37720, Invalid=42652, Unknown=0, NotChecked=0, Total=80372 [2021-11-07 01:44:29,965 INFO L87 Difference]: Start difference. First operand 819 states and 1359 transitions. Second operand has 276 states, 276 states have (on average 3.4855072463768115) internal successors, (962), 276 states have internal predecessors, (962), 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 01:48:08,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:48:08,587 INFO L93 Difference]: Finished difference Result 137450 states and 247210 transitions. [2021-11-07 01:48:08,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 412 states. [2021-11-07 01:48:08,588 INFO L78 Accepts]: Start accepts. Automaton has has 276 states, 276 states have (on average 3.4855072463768115) internal successors, (962), 276 states have internal predecessors, (962), 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 817 [2021-11-07 01:48:08,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:48:09,210 INFO L225 Difference]: With dead ends: 137450 [2021-11-07 01:48:09,210 INFO L226 Difference]: Without dead ends: 136632 [2021-11-07 01:48:09,312 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2724 GetRequests, 2305 SyntacticMatches, 0 SemanticMatches, 419 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22575 ImplicationChecksByTransitivity, 45.5s TimeCoverageRelationStatistics Valid=56900, Invalid=119920, Unknown=0, NotChecked=0, Total=176820 [2021-11-07 01:48:09,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136632 states. [2021-11-07 01:48:25,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136632 to 1230. [2021-11-07 01:48:25,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1230 states, 1229 states have (on average 1.5516680227827502) internal successors, (1907), 1229 states have internal predecessors, (1907), 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 01:48:25,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1230 states to 1230 states and 1907 transitions. [2021-11-07 01:48:25,783 INFO L78 Accepts]: Start accepts. Automaton has 1230 states and 1907 transitions. Word has length 817 [2021-11-07 01:48:25,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:48:25,784 INFO L470 AbstractCegarLoop]: Abstraction has 1230 states and 1907 transitions. [2021-11-07 01:48:25,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 276 states, 276 states have (on average 3.4855072463768115) internal successors, (962), 276 states have internal predecessors, (962), 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 01:48:25,786 INFO L276 IsEmpty]: Start isEmpty. Operand 1230 states and 1907 transitions. [2021-11-07 01:48:25,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1229 [2021-11-07 01:48:25,859 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:48:25,860 INFO L513 BasicCegarLoop]: trace histogram [403, 273, 272, 272, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:48:25,892 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8599bd17-1fa4-46b9-82e9-b1ea1bddbd41/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-11-07 01:48:26,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8599bd17-1fa4-46b9-82e9-b1ea1bddbd41/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable300 [2021-11-07 01:48:26,062 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:48:26,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:48:26,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1110063650, now seen corresponding path program 10 times [2021-11-07 01:48:26,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:48:26,063 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590935640] [2021-11-07 01:48:26,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:48:26,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:48:27,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:48:58,368 INFO L134 CoverageAnalysis]: Checked inductivity of 302004 backedges. 0 proven. 37401 refuted. 0 times theorem prover too weak. 264603 trivial. 0 not checked. [2021-11-07 01:48:58,368 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:48:58,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590935640] [2021-11-07 01:48:58,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590935640] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:48:58,369 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541105916] [2021-11-07 01:48:58,369 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 01:48:58,369 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:48:58,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8599bd17-1fa4-46b9-82e9-b1ea1bddbd41/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:48:58,372 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8599bd17-1fa4-46b9-82e9-b1ea1bddbd41/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:48:58,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8599bd17-1fa4-46b9-82e9-b1ea1bddbd41/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-07 01:49:00,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:49:00,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 5614 conjuncts, 275 conjunts are in the unsatisfiable core [2021-11-07 01:49:00,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:49:03,622 INFO L134 CoverageAnalysis]: Checked inductivity of 302004 backedges. 0 proven. 37401 refuted. 0 times theorem prover too weak. 264603 trivial. 0 not checked. [2021-11-07 01:49:03,622 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:50:35,445 INFO L134 CoverageAnalysis]: Checked inductivity of 302004 backedges. 0 proven. 37401 refuted. 0 times theorem prover too weak. 264603 trivial. 0 not checked. [2021-11-07 01:50:35,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [541105916] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:50:35,446 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1981802576] [2021-11-07 01:50:35,449 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-07 01:50:35,449 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 01:50:35,449 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 01:50:35,450 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 01:50:35,450 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 01:50:35,458 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:35,459 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:50:35,459 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:35,460 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 01:50:35,460 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:50:35,461 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:35,461 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 01:50:35,462 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 125 [2021-11-07 01:50:35,465 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_20|], 21=[|v_#valid_31|]} [2021-11-07 01:50:35,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:35,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:35,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:35,478 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 01:50:35,479 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:35,479 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:50:35,480 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:35,480 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:50:35,481 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:50:35,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:35,484 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:35,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:35,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:35,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:35,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:35,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:35,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:35,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:35,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:35,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:35,499 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 01:50:35,500 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:35,502 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 01:50:35,502 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:35,503 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 01:50:35,503 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 01:50:35,503 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:35,505 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:35,510 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:35,511 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-07 01:50:35,511 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:50:35,511 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:122, output treesize:97 [2021-11-07 01:50:35,514 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.7 percent of original size [2021-11-07 01:50:35,516 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:50:35,516 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:35,517 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:50:35,517 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:35,517 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-07 01:50:35,518 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-07 01:50:35,518 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:50:35,518 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:35,519 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:50:35,520 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:35,520 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-07 01:50:35,520 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-07 01:50:35,521 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:50:35,521 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:35,522 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-07 01:50:35,523 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 125 [2021-11-07 01:50:35,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:35,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:35,532 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 35 [2021-11-07 01:50:35,532 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:35,533 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-07 01:50:35,534 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:35,534 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-07 01:50:35,534 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:50:35,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:35,536 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:35,537 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:35,539 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 125 [2021-11-07 01:50:35,539 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:50:35,539 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:123, output treesize:125 [2021-11-07 01:50:35,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:35,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:35,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:35,563 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:35,566 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:50:35,569 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:35,570 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:50:35,570 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:35,571 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-07 01:50:35,572 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-07 01:50:35,572 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:50:35,574 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:35,577 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:50:35,580 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:35,581 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:50:35,582 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:35,583 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-07 01:50:35,584 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:50:35,584 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:35,585 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-07 01:50:35,588 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 261 [2021-11-07 01:50:35,588 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:50:35,591 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:35,593 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 242 [2021-11-07 01:50:35,596 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 243 [2021-11-07 01:50:35,599 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:50:35,600 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:35,602 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:50:35,602 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:35,603 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:50:35,603 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:35,603 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-07 01:50:35,604 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-07 01:50:35,604 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:50:35,604 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:35,605 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:50:35,605 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:35,606 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-07 01:50:35,606 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-11-07 01:50:35,607 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:50:35,607 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:35,607 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-11-07 01:50:35,608 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:50:35,609 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:35,609 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:50:35,609 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:35,610 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-07 01:50:35,610 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-07 01:50:35,611 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:50:35,611 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:35,611 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:50:35,613 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:35,613 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-07 01:50:35,614 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-07 01:50:35,614 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:50:35,615 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:35,615 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-07 01:50:35,618 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 277 [2021-11-07 01:50:35,619 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:50:35,621 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:35,623 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 250 [2021-11-07 01:50:35,625 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 306 [2021-11-07 01:50:35,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:35,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:35,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:35,649 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 55 [2021-11-07 01:50:35,650 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:35,651 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-11-07 01:50:35,651 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:35,652 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-11-07 01:50:35,652 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:50:35,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:35,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:35,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 35 [2021-11-07 01:50:35,668 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:35,669 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-07 01:50:35,670 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:35,670 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-07 01:50:35,671 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 01:50:35,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:35,682 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:35,687 INFO L180 QuantifierPusher]: treesize reduction 94, result has 74.9 percent of original size [2021-11-07 01:50:35,689 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 291 [2021-11-07 01:50:35,690 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-07 01:50:35,690 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:381, output treesize:291 [2021-11-07 01:50:35,694 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:35,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:35,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:35,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:35,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:35,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:35,711 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:35,716 INFO L180 QuantifierPusher]: treesize reduction 36, result has 64.7 percent of original size [2021-11-07 01:50:35,718 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:50:35,719 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:35,720 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:50:35,720 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:35,721 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:50:35,722 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-07 01:50:35,722 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:50:35,723 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:35,723 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-07 01:50:35,724 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-11-07 01:50:35,730 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-07 01:50:35,730 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:35,731 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 01:50:35,731 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:35,731 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 01:50:35,731 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:50:35,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:35,733 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:35,734 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:35,735 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-11-07 01:50:35,735 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:50:35,735 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:61, output treesize:63 [2021-11-07 01:50:35,738 INFO L180 QuantifierPusher]: treesize reduction 40, result has 48.7 percent of original size [2021-11-07 01:50:35,739 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-07 01:50:35,743 INFO L180 QuantifierPusher]: treesize reduction 12, result has 80.0 percent of original size [2021-11-07 01:50:35,745 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-11-07 01:50:35,746 INFO L180 QuantifierPusher]: treesize reduction 11, result has 81.4 percent of original size [2021-11-07 01:50:35,748 INFO L185 QuantifierPusher]: treesize reduction 41, result has 2.4 percent of original size 1 [2021-11-07 01:50:35,751 INFO L180 QuantifierPusher]: treesize reduction 7, result has 93.2 percent of original size [2021-11-07 01:50:35,752 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 91 [2021-11-07 01:50:35,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:35,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:35,762 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:35,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:35,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:35,779 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:35,781 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:35,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:35,783 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:35,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:35,792 INFO L180 QuantifierPusher]: treesize reduction 41, result has 51.2 percent of original size [2021-11-07 01:50:35,793 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-11-07 01:50:35,795 INFO L180 QuantifierPusher]: treesize reduction 4, result has 92.0 percent of original size [2021-11-07 01:50:35,796 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-07 01:50:35,799 INFO L180 QuantifierPusher]: treesize reduction 40, result has 69.5 percent of original size [2021-11-07 01:50:35,801 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-11-07 01:50:35,802 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:35,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:35,809 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:35,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:35,822 INFO L180 QuantifierPusher]: treesize reduction 41, result has 51.2 percent of original size [2021-11-07 01:50:35,823 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-11-07 01:50:35,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:35,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:35,831 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:35,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:35,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:35,846 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:35,849 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:35,854 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:35,874 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 01:50:39,464 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 01:50:39,464 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 01:50:39,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [275, 275, 275] total 549 [2021-11-07 01:50:39,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598508586] [2021-11-07 01:50:39,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 550 states [2021-11-07 01:50:39,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:50:39,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 550 interpolants. [2021-11-07 01:50:39,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151019, Invalid=159787, Unknown=0, NotChecked=0, Total=310806 [2021-11-07 01:50:39,527 INFO L87 Difference]: Start difference. First operand 1230 states and 1907 transitions. Second operand has 550 states, 550 states have (on average 1.0163636363636364) internal successors, (559), 549 states have internal predecessors, (559), 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)