./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-cav19/array_init_var_plus_ind.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-cav19/array_init_var_plus_ind.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c51b17720ce1dad8733576d816f307564aabdff8c7a86cf8d9848ed8571cafd2 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:02:31,810 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:02:31,813 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:02:31,855 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:02:31,856 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:02:31,858 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:02:31,860 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:02:31,863 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:02:31,866 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:02:31,868 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:02:31,870 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:02:31,871 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:02:31,872 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:02:31,874 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:02:31,876 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:02:31,879 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:02:31,880 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:02:31,882 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:02:31,885 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:02:31,889 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:02:31,891 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:02:31,894 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:02:31,896 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:02:31,897 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:02:31,902 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:02:31,903 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:02:31,904 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:02:31,905 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:02:31,906 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:02:31,908 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:02:31,908 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:02:31,910 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:02:31,911 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:02:31,912 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:02:31,914 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:02:31,915 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:02:31,916 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:02:31,916 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:02:31,917 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:02:31,919 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:02:31,920 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:02:31,921 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-12 23:02:31,957 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:02:31,957 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:02:31,958 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:02:31,959 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:02:31,959 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:02:31,959 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:02:31,960 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:02:31,960 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:02:31,960 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:02:31,960 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:02:31,961 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:02:31,961 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:02:31,961 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:02:31,962 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:02:31,962 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:02:31,962 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:02:31,963 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:02:31,964 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 23:02:31,964 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:02:31,964 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 23:02:31,965 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:02:31,965 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:02:31,965 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:02:31,966 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:02:31,966 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:02:31,966 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 23:02:31,967 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:02:31,967 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:02:31,967 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:02:31,968 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:02:31,968 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:02:31,968 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:02:31,969 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:02:31,969 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:02:31,969 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:02:31,970 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:02:31,970 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:02:31,970 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:02:31,970 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:02:31,971 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:02:31,971 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_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c51b17720ce1dad8733576d816f307564aabdff8c7a86cf8d9848ed8571cafd2 [2021-11-12 23:02:32,316 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:02:32,357 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:02:32,361 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:02:32,362 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:02:32,363 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:02:32,365 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/array-cav19/array_init_var_plus_ind.c [2021-11-12 23:02:32,456 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/data/7f11bebfa/a4933b5a51ad4439ae8c991d5148dd8b/FLAG24626fe32 [2021-11-12 23:02:33,162 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:02:33,164 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/sv-benchmarks/c/array-cav19/array_init_var_plus_ind.c [2021-11-12 23:02:33,180 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/data/7f11bebfa/a4933b5a51ad4439ae8c991d5148dd8b/FLAG24626fe32 [2021-11-12 23:02:33,505 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/data/7f11bebfa/a4933b5a51ad4439ae8c991d5148dd8b [2021-11-12 23:02:33,509 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:02:33,513 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:02:33,519 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:02:33,520 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:02:33,525 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:02:33,527 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:02:33" (1/1) ... [2021-11-12 23:02:33,529 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4498bce6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:02:33, skipping insertion in model container [2021-11-12 23:02:33,530 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:02:33" (1/1) ... [2021-11-12 23:02:33,540 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:02:33,564 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:02:33,812 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_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/sv-benchmarks/c/array-cav19/array_init_var_plus_ind.c[414,427] [2021-11-12 23:02:33,829 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:02:33,840 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:02:33,857 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_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/sv-benchmarks/c/array-cav19/array_init_var_plus_ind.c[414,427] [2021-11-12 23:02:33,865 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:02:33,883 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:02:33,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:02:33 WrapperNode [2021-11-12 23:02:33,884 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:02:33,885 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:02:33,885 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:02:33,886 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:02:33,896 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:02:33" (1/1) ... [2021-11-12 23:02:33,903 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:02:33" (1/1) ... [2021-11-12 23:02:33,926 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:02:33,927 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:02:33,927 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:02:33,927 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:02:33,938 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:02:33" (1/1) ... [2021-11-12 23:02:33,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:02:33" (1/1) ... [2021-11-12 23:02:33,940 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:02:33" (1/1) ... [2021-11-12 23:02:33,941 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:02:33" (1/1) ... [2021-11-12 23:02:33,954 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:02:33" (1/1) ... [2021-11-12 23:02:33,959 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:02:33" (1/1) ... [2021-11-12 23:02:33,960 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:02:33" (1/1) ... [2021-11-12 23:02:33,963 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:02:33,964 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:02:33,964 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:02:33,964 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:02:33,965 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:02:33" (1/1) ... [2021-11-12 23:02:33,980 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:02:33,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:02:34,022 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:02:34,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:02:34,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-12 23:02:34,092 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:02:34,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-12 23:02:34,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:02:34,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:02:34,094 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-12 23:02:34,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 23:02:34,467 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:02:34,471 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-12 23:02:34,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:02:34 BoogieIcfgContainer [2021-11-12 23:02:34,475 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:02:34,481 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:02:34,481 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:02:34,486 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:02:34,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:02:33" (1/3) ... [2021-11-12 23:02:34,489 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cc71079 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:02:34, skipping insertion in model container [2021-11-12 23:02:34,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:02:33" (2/3) ... [2021-11-12 23:02:34,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cc71079 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:02:34, skipping insertion in model container [2021-11-12 23:02:34,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:02:34" (3/3) ... [2021-11-12 23:02:34,494 INFO L111 eAbstractionObserver]: Analyzing ICFG array_init_var_plus_ind.c [2021-11-12 23:02:34,502 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:02:34,503 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 23:02:34,587 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:02:34,603 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 [2021-11-12 23:02:34,603 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 23:02:34,636 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.625) internal successors, (13), 9 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) [2021-11-12 23:02:34,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-12 23:02:34,652 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:02:34,653 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-12 23:02:34,654 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:02:34,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:02:34,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1868223123, now seen corresponding path program 1 times [2021-11-12 23:02:34,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:02:34,678 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204700253] [2021-11-12 23:02:34,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:02:34,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:02:34,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:02:35,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:02:35,024 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:02:35,025 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204700253] [2021-11-12 23:02:35,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204700253] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:02:35,026 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:02:35,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-12 23:02:35,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530445754] [2021-11-12 23:02:35,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:02:35,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:02:35,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:02:35,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:02:35,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:02:35,128 INFO L87 Difference]: Start difference. First operand has 10 states, 8 states have (on average 1.625) internal successors, (13), 9 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) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:02:35,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:02:35,227 INFO L93 Difference]: Finished difference Result 26 states and 33 transitions. [2021-11-12 23:02:35,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:02:35,230 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-12 23:02:35,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:02:35,242 INFO L225 Difference]: With dead ends: 26 [2021-11-12 23:02:35,243 INFO L226 Difference]: Without dead ends: 17 [2021-11-12 23:02:35,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:02:35,252 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 9 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 52.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.07ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 74.98ms IncrementalHoareTripleChecker+Time [2021-11-12 23:02:35,254 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 10 Invalid, 13 Unknown, 0 Unchecked, 1.07ms Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 74.98ms Time] [2021-11-12 23:02:35,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-11-12 23:02:35,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 10. [2021-11-12 23:02:35,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 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) [2021-11-12 23:02:35,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2021-11-12 23:02:35,309 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 6 [2021-11-12 23:02:35,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:02:35,310 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2021-11-12 23:02:35,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:02:35,310 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2021-11-12 23:02:35,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-12 23:02:35,311 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:02:35,311 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:02:35,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-12 23:02:35,312 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:02:35,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:02:35,313 INFO L85 PathProgramCache]: Analyzing trace with hash 947313280, now seen corresponding path program 1 times [2021-11-12 23:02:35,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:02:35,314 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492860118] [2021-11-12 23:02:35,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:02:35,314 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:02:35,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:02:35,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:02:35,384 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:02:35,385 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492860118] [2021-11-12 23:02:35,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492860118] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:02:35,385 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:02:35,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-12 23:02:35,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028828531] [2021-11-12 23:02:35,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:02:35,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:02:35,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:02:35,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:02:35,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:02:35,390 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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) [2021-11-12 23:02:35,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:02:35,422 INFO L93 Difference]: Finished difference Result 18 states and 21 transitions. [2021-11-12 23:02:35,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:02:35,423 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-12 23:02:35,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:02:35,424 INFO L225 Difference]: With dead ends: 18 [2021-11-12 23:02:35,424 INFO L226 Difference]: Without dead ends: 11 [2021-11-12 23:02:35,425 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:02:35,427 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 1 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.77ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.42ms IncrementalHoareTripleChecker+Time [2021-11-12 23:02:35,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 15 Invalid, 17 Unknown, 0 Unchecked, 0.77ms Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 24.42ms Time] [2021-11-12 23:02:35,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-11-12 23:02:35,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-11-12 23:02:35,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 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) [2021-11-12 23:02:35,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2021-11-12 23:02:35,433 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 7 [2021-11-12 23:02:35,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:02:35,434 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2021-11-12 23:02:35,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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) [2021-11-12 23:02:35,435 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2021-11-12 23:02:35,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-12 23:02:35,435 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:02:35,436 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:02:35,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-12 23:02:35,436 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:02:35,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:02:35,437 INFO L85 PathProgramCache]: Analyzing trace with hash 362824998, now seen corresponding path program 1 times [2021-11-12 23:02:35,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:02:35,438 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370752218] [2021-11-12 23:02:35,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:02:35,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:02:35,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:02:35,519 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:02:35,519 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:02:35,519 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370752218] [2021-11-12 23:02:35,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370752218] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 23:02:35,520 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868941866] [2021-11-12 23:02:35,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:02:35,521 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:02:35,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:02:35,523 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:02:35,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-12 23:02:35,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:02:35,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:02:35,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:02:35,837 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:02:35,837 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:02:35,899 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:02:35,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [868941866] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:02:35,900 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1686945164] [2021-11-12 23:02:35,926 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-12 23:02:35,926 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 23:02:35,932 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 23:02:35,939 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 23:02:35,940 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 23:02:35,995 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:36,002 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:02:36,004 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:36,007 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:02:36,017 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:02:36,018 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:36,019 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-11-12 23:02:36,036 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 163 [2021-11-12 23:02:36,068 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_13|], 36=[|v_#valid_28|]} [2021-11-12 23:02:36,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:36,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:36,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:36,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:36,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:36,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:36,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:36,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:36,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:36,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 16 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 23 [2021-11-12 23:02:36,126 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:36,127 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-12 23:02:36,128 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:36,129 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-12 23:02:36,129 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:02:36,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:36,176 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:36,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:36,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:36,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:36,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:36,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:36,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:36,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:36,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:36,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:36,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:36,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:36,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:36,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:36,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:36,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:36,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:36,239 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 38 [2021-11-12 23:02:36,243 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:36,250 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-12 23:02:36,252 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:36,255 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-12 23:02:36,256 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 23:02:36,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:36,312 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:36,316 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:36,344 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-11-12 23:02:36,345 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:02:36,345 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:160, output treesize:122 [2021-11-12 23:02:36,358 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:36,372 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 133 [2021-11-12 23:02:36,395 INFO L180 QuantifierPusher]: treesize reduction 8, result has 95.1 percent of original size [2021-11-12 23:02:36,405 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:02:36,409 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:36,410 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-12 23:02:36,423 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 152 [2021-11-12 23:02:36,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:36,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:36,460 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 [2021-11-12 23:02:36,462 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:36,464 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-12 23:02:36,465 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:36,466 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-12 23:02:36,467 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:02:36,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:36,480 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:36,484 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:36,488 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 146 [2021-11-12 23:02:36,489 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:02:36,490 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:150, output treesize:146 [2021-11-12 23:02:36,499 INFO L180 QuantifierPusher]: treesize reduction 7, result has 95.7 percent of original size [2021-11-12 23:02:36,506 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 147 [2021-11-12 23:02:36,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:36,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:36,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:36,657 INFO L180 QuantifierPusher]: treesize reduction 5, result has 98.7 percent of original size [2021-11-12 23:02:36,679 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:02:36,687 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:36,689 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:02:36,690 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:36,691 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 23:02:36,693 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:02:36,694 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:36,695 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-11-12 23:02:36,721 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 335 [2021-11-12 23:02:36,723 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:02:36,736 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:36,748 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 311 [2021-11-12 23:02:36,761 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 386 [2021-11-12 23:02:36,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:36,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:36,830 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 38 treesize of output 40 [2021-11-12 23:02:36,831 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:36,839 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-12 23:02:36,846 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:36,853 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-12 23:02:36,854 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:02:36,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:36,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:36,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:36,900 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 50 treesize of output 55 [2021-11-12 23:02:36,902 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:36,906 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-11-12 23:02:36,907 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:36,909 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-11-12 23:02:36,909 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 23:02:36,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:36,979 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:37,020 INFO L180 QuantifierPusher]: treesize reduction 124, result has 73.6 percent of original size [2021-11-12 23:02:37,029 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 345 [2021-11-12 23:02:37,031 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-12 23:02:37,031 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:477, output treesize:345 [2021-11-12 23:02:37,050 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:37,067 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 351 [2021-11-12 23:02:37,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:37,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:37,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:37,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:37,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:37,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:37,200 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:37,217 INFO L180 QuantifierPusher]: treesize reduction 50, result has 59.0 percent of original size [2021-11-12 23:02:37,220 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:02:37,221 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:37,222 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 23:02:37,224 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-11-12 23:02:37,234 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-11-12 23:02:37,235 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:37,236 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:02:37,236 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:37,237 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:02:37,237 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:02:37,238 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:37,242 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:37,244 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:37,246 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-11-12 23:02:37,247 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:02:37,248 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:69, output treesize:65 [2021-11-12 23:02:37,251 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:37,255 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-11-12 23:02:37,267 INFO L180 QuantifierPusher]: treesize reduction 50, result has 59.0 percent of original size [2021-11-12 23:02:37,270 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:02:37,271 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:37,272 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 23:02:37,274 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-11-12 23:02:37,290 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-11-12 23:02:37,291 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:37,291 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:02:37,292 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:37,293 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:02:37,293 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:02:37,294 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:37,299 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:37,301 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:37,303 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-11-12 23:02:37,304 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:02:37,307 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:69, output treesize:65 [2021-11-12 23:02:37,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:37,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:37,347 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:37,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:37,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:37,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:37,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:37,465 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:37,529 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 23:02:39,843 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 23:02:39,844 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 23:02:39,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2021-11-12 23:02:39,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82923018] [2021-11-12 23:02:39,845 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 23:02:39,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-12 23:02:39,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:02:39,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-12 23:02:39,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2021-11-12 23:02:39,851 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand has 9 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 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) [2021-11-12 23:02:39,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:02:39,964 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions. [2021-11-12 23:02:39,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 23:02:39,965 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 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 [2021-11-12 23:02:39,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:02:39,967 INFO L225 Difference]: With dead ends: 36 [2021-11-12 23:02:39,967 INFO L226 Difference]: Without dead ends: 28 [2021-11-12 23:02:39,969 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2021-11-12 23:02:39,973 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 20 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.17ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48.28ms IncrementalHoareTripleChecker+Time [2021-11-12 23:02:39,975 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 29 Invalid, 36 Unknown, 0 Unchecked, 3.17ms Time], IncrementalHoareTripleChecker [4 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 48.28ms Time] [2021-11-12 23:02:39,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-11-12 23:02:39,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 16. [2021-11-12 23:02:39,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 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) [2021-11-12 23:02:39,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2021-11-12 23:02:39,987 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 8 [2021-11-12 23:02:39,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:02:39,987 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2021-11-12 23:02:39,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 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) [2021-11-12 23:02:39,988 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2021-11-12 23:02:39,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-12 23:02:39,989 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:02:39,989 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2021-11-12 23:02:40,029 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-12 23:02:40,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-11-12 23:02:40,209 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:02:40,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:02:40,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1925995406, now seen corresponding path program 1 times [2021-11-12 23:02:40,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:02:40,211 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113481135] [2021-11-12 23:02:40,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:02:40,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:02:40,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:02:40,361 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:02:40,361 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:02:40,361 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113481135] [2021-11-12 23:02:40,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113481135] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 23:02:40,362 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319819405] [2021-11-12 23:02:40,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:02:40,365 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:02:40,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:02:40,369 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:02:40,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-12 23:02:40,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:02:40,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-12 23:02:40,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:02:40,568 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 25 treesize of output 21 [2021-11-12 23:02:40,705 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2021-11-12 23:02:40,753 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:02:40,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:02:40,818 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2021-11-12 23:02:40,824 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2021-11-12 23:02:40,938 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:02:40,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1319819405] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:02:40,939 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [136220258] [2021-11-12 23:02:40,943 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-12 23:02:40,943 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 23:02:40,944 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 23:02:40,944 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 23:02:40,944 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 23:02:40,952 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:40,954 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:02:40,955 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:40,956 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-11-12 23:02:40,956 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:02:40,957 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:40,957 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:02:40,960 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 163 [2021-11-12 23:02:40,964 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_14|], 36=[|v_#valid_29|]} [2021-11-12 23:02:40,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:40,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:40,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:40,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:40,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:40,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:40,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:40,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:40,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:40,989 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 16 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 23 [2021-11-12 23:02:40,991 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:40,992 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-12 23:02:40,992 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:40,993 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-12 23:02:40,994 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:02:40,995 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:41,004 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:41,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:41,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:41,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:41,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:41,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:41,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:41,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:41,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:41,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:41,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:41,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:41,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:41,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:41,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:41,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:41,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:41,043 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 38 [2021-11-12 23:02:41,044 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:41,049 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-12 23:02:41,050 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:41,051 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-12 23:02:41,051 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 23:02:41,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:41,059 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:41,061 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:41,064 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-11-12 23:02:41,065 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:02:41,065 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:160, output treesize:122 [2021-11-12 23:02:41,071 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:41,077 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 133 [2021-11-12 23:02:41,084 INFO L180 QuantifierPusher]: treesize reduction 8, result has 95.1 percent of original size [2021-11-12 23:02:41,089 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:02:41,089 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:41,091 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 23:02:41,095 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 160 [2021-11-12 23:02:41,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:41,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:41,111 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 38 treesize of output 40 [2021-11-12 23:02:41,112 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:41,114 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-12 23:02:41,115 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:41,115 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-12 23:02:41,116 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:02:41,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:41,124 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:41,128 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:41,130 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 154 [2021-11-12 23:02:41,131 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:02:41,132 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:158, output treesize:154 [2021-11-12 23:02:41,139 INFO L180 QuantifierPusher]: treesize reduction 11, result has 93.5 percent of original size [2021-11-12 23:02:41,145 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 151 [2021-11-12 23:02:41,149 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:41,175 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:41,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:41,259 INFO L180 QuantifierPusher]: treesize reduction 8, result has 97.9 percent of original size [2021-11-12 23:02:41,277 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:02:41,282 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:41,283 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:02:41,284 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:41,285 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-11-12 23:02:41,290 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:02:41,291 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:41,292 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 23:02:41,297 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 337 [2021-11-12 23:02:41,299 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:02:41,304 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:41,308 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 313 [2021-11-12 23:02:41,315 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 388 [2021-11-12 23:02:41,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:41,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:41,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:41,357 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 58 treesize of output 63 [2021-11-12 23:02:41,358 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:41,361 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-11-12 23:02:41,362 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:41,363 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-11-12 23:02:41,363 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:02:41,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:41,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:41,386 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 38 treesize of output 40 [2021-11-12 23:02:41,387 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:41,390 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-12 23:02:41,391 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:41,392 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-12 23:02:41,392 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 23:02:41,393 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:41,462 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:41,484 INFO L180 QuantifierPusher]: treesize reduction 120, result has 74.5 percent of original size [2021-11-12 23:02:41,493 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 351 [2021-11-12 23:02:41,496 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-12 23:02:41,497 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:479, output treesize:351 [2021-11-12 23:02:41,505 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:41,515 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 357 [2021-11-12 23:02:41,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:41,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:41,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:41,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:41,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:41,599 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:41,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:41,618 INFO L180 QuantifierPusher]: treesize reduction 50, result has 59.0 percent of original size [2021-11-12 23:02:41,620 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:02:41,621 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:41,622 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 23:02:41,623 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-11-12 23:02:41,634 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-11-12 23:02:41,636 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:41,637 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:02:41,638 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:41,638 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:02:41,639 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:02:41,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:41,643 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:41,644 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:41,645 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-11-12 23:02:41,646 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:02:41,646 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:69, output treesize:65 [2021-11-12 23:02:41,650 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:41,661 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-11-12 23:02:41,677 INFO L180 QuantifierPusher]: treesize reduction 50, result has 59.0 percent of original size [2021-11-12 23:02:41,679 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:02:41,680 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:41,684 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 23:02:41,686 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-11-12 23:02:41,693 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-11-12 23:02:41,694 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:41,695 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:02:41,695 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:41,696 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:02:41,696 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:02:41,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:41,700 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:41,701 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:41,702 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-11-12 23:02:41,703 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:02:41,703 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:69, output treesize:65 [2021-11-12 23:02:41,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:41,715 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:41,726 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:41,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:41,763 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 23:02:43,217 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 23:02:43,217 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 23:02:43,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 9 [2021-11-12 23:02:43,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155395851] [2021-11-12 23:02:43,218 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 23:02:43,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-12 23:02:43,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:02:43,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-12 23:02:43,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2021-11-12 23:02:43,220 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand has 10 states, 10 states have (on average 1.8) internal successors, (18), 9 states have internal predecessors, (18), 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) [2021-11-12 23:02:43,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:02:43,364 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2021-11-12 23:02:43,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-12 23:02:43,364 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.8) internal successors, (18), 9 states have internal predecessors, (18), 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 11 [2021-11-12 23:02:43,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:02:43,365 INFO L225 Difference]: With dead ends: 29 [2021-11-12 23:02:43,365 INFO L226 Difference]: Without dead ends: 27 [2021-11-12 23:02:43,366 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 18 SyntacticMatches, 5 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2021-11-12 23:02:43,367 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 12 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 59.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.69ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 85.83ms IncrementalHoareTripleChecker+Time [2021-11-12 23:02:43,368 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 37 Invalid, 72 Unknown, 0 Unchecked, 1.69ms Time], IncrementalHoareTripleChecker [6 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 85.83ms Time] [2021-11-12 23:02:43,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-11-12 23:02:43,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 19. [2021-11-12 23:02:43,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 18 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) [2021-11-12 23:02:43,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2021-11-12 23:02:43,374 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 11 [2021-11-12 23:02:43,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:02:43,374 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2021-11-12 23:02:43,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.8) internal successors, (18), 9 states have internal predecessors, (18), 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) [2021-11-12 23:02:43,375 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2021-11-12 23:02:43,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-12 23:02:43,376 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:02:43,376 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1] [2021-11-12 23:02:43,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-12 23:02:43,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-11-12 23:02:43,598 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:02:43,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:02:43,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1306013557, now seen corresponding path program 2 times [2021-11-12 23:02:43,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:02:43,600 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761503049] [2021-11-12 23:02:43,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:02:43,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:02:43,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:02:43,778 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:02:43,778 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:02:43,779 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761503049] [2021-11-12 23:02:43,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761503049] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 23:02:43,779 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160238607] [2021-11-12 23:02:43,779 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-12 23:02:43,779 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:02:43,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:02:43,780 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:02:43,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-12 23:02:43,831 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-12 23:02:43,831 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:02:43,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-12 23:02:43,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:02:43,905 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-11-12 23:02:43,950 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-11-12 23:02:43,951 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-11-12 23:02:44,016 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2021-11-12 23:02:44,044 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:02:44,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:02:44,162 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 27 [2021-11-12 23:02:44,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 191 treesize of output 183 [2021-11-12 23:02:44,323 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:02:44,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1160238607] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:02:44,324 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [497678213] [2021-11-12 23:02:44,326 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-12 23:02:44,327 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 23:02:44,327 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 23:02:44,327 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 23:02:44,328 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 23:02:44,335 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:44,336 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:02:44,337 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:44,338 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-11-12 23:02:44,338 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:02:44,339 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:44,339 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:02:44,341 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 163 [2021-11-12 23:02:44,345 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_15|], 36=[|v_#valid_30|]} [2021-11-12 23:02:44,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:44,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:44,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:44,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:44,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:44,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:44,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:44,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:44,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:44,369 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 16 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 23 [2021-11-12 23:02:44,369 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:44,370 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-12 23:02:44,371 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:44,371 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-12 23:02:44,372 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:02:44,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:44,379 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:44,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:44,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:44,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:44,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:44,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:44,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:44,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:44,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:44,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:44,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:44,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:44,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:44,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:44,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:44,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:44,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:44,411 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 38 [2021-11-12 23:02:44,412 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:44,416 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-12 23:02:44,417 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:44,417 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-12 23:02:44,418 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 23:02:44,418 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:44,424 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:44,426 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:44,429 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-11-12 23:02:44,429 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:02:44,430 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:160, output treesize:122 [2021-11-12 23:02:44,437 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:44,442 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 133 [2021-11-12 23:02:44,449 INFO L180 QuantifierPusher]: treesize reduction 8, result has 95.1 percent of original size [2021-11-12 23:02:44,452 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:02:44,452 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:44,453 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-12 23:02:44,457 INFO L185 QuantifierPusher]: treesize reduction 3, result has 97.9 percent of original size 138 [2021-11-12 23:02:44,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:44,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:44,473 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 [2021-11-12 23:02:44,474 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:44,475 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 23:02:44,476 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:44,477 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 23:02:44,477 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:02:44,478 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:44,485 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:44,488 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-11-12 23:02:44,491 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 132 [2021-11-12 23:02:44,492 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:02:44,492 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:139, output treesize:132 [2021-11-12 23:02:44,496 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:44,500 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 140 [2021-11-12 23:02:44,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:44,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:44,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:44,625 INFO L180 QuantifierPusher]: treesize reduction 8, result has 97.8 percent of original size [2021-11-12 23:02:44,642 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:02:44,647 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:44,649 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:02:44,649 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:44,650 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 23:02:44,651 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:02:44,652 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:44,653 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-11-12 23:02:44,658 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 327 [2021-11-12 23:02:44,660 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:02:44,664 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:44,669 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 303 [2021-11-12 23:02:44,675 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 378 [2021-11-12 23:02:44,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:44,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:44,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:44,709 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 50 treesize of output 55 [2021-11-12 23:02:44,710 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:44,713 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-11-12 23:02:44,714 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:44,715 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-11-12 23:02:44,716 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:02:44,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:44,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:44,736 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 38 treesize of output 40 [2021-11-12 23:02:44,737 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:44,739 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-12 23:02:44,739 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:44,740 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-12 23:02:44,740 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 23:02:44,741 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:44,781 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:44,813 INFO L180 QuantifierPusher]: treesize reduction 129, result has 72.0 percent of original size [2021-11-12 23:02:44,838 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 332 [2021-11-12 23:02:44,839 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-12 23:02:44,840 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:469, output treesize:332 [2021-11-12 23:02:44,860 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:44,869 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 338 [2021-11-12 23:02:44,891 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:44,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:44,973 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:44,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:44,977 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:44,978 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:44,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:44,993 INFO L180 QuantifierPusher]: treesize reduction 50, result has 59.0 percent of original size [2021-11-12 23:02:44,995 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:02:44,996 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:44,997 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 23:02:44,998 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-11-12 23:02:45,005 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-11-12 23:02:45,006 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:45,007 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:02:45,007 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:45,008 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:02:45,008 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:02:45,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:45,011 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:45,012 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:45,014 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-11-12 23:02:45,014 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:02:45,015 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:69, output treesize:65 [2021-11-12 23:02:45,017 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:45,020 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-11-12 23:02:45,036 INFO L180 QuantifierPusher]: treesize reduction 50, result has 59.0 percent of original size [2021-11-12 23:02:45,038 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:02:45,045 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:45,046 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 23:02:45,047 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-11-12 23:02:45,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-11-12 23:02:45,056 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:45,057 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:02:45,057 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:45,058 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:02:45,058 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:02:45,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:45,061 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:45,063 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:45,064 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-11-12 23:02:45,065 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:02:45,065 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:69, output treesize:65 [2021-11-12 23:02:45,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:45,077 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:45,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:45,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:45,128 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 23:02:46,463 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 23:02:46,463 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 23:02:46,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2021-11-12 23:02:46,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662831765] [2021-11-12 23:02:46,464 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 23:02:46,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-12 23:02:46,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:02:46,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-12 23:02:46,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=397, Unknown=0, NotChecked=0, Total=462 [2021-11-12 23:02:46,466 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand has 16 states, 16 states have (on average 1.875) internal successors, (30), 15 states have internal predecessors, (30), 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) [2021-11-12 23:02:46,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:02:46,828 INFO L93 Difference]: Finished difference Result 39 states and 46 transitions. [2021-11-12 23:02:46,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 23:02:46,829 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.875) internal successors, (30), 15 states have internal predecessors, (30), 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 13 [2021-11-12 23:02:46,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:02:46,830 INFO L225 Difference]: With dead ends: 39 [2021-11-12 23:02:46,830 INFO L226 Difference]: Without dead ends: 37 [2021-11-12 23:02:46,831 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=149, Invalid=721, Unknown=0, NotChecked=0, Total=870 [2021-11-12 23:02:46,832 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 44 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 98.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.88ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 20 IncrementalHoareTripleChecker+Unchecked, 116.87ms IncrementalHoareTripleChecker+Time [2021-11-12 23:02:46,833 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 43 Invalid, 124 Unknown, 0 Unchecked, 2.88ms Time], IncrementalHoareTripleChecker [19 Valid, 85 Invalid, 0 Unknown, 20 Unchecked, 116.87ms Time] [2021-11-12 23:02:46,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-11-12 23:02:46,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 22. [2021-11-12 23:02:46,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 21 states have internal predecessors, (28), 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) [2021-11-12 23:02:46,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 28 transitions. [2021-11-12 23:02:46,839 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 28 transitions. Word has length 13 [2021-11-12 23:02:46,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:02:46,840 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 28 transitions. [2021-11-12 23:02:46,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.875) internal successors, (30), 15 states have internal predecessors, (30), 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) [2021-11-12 23:02:46,840 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 28 transitions. [2021-11-12 23:02:46,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-12 23:02:46,841 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:02:46,842 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:02:46,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-12 23:02:47,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-11-12 23:02:47,057 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:02:47,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:02:47,058 INFO L85 PathProgramCache]: Analyzing trace with hash 866156038, now seen corresponding path program 1 times [2021-11-12 23:02:47,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:02:47,059 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641579603] [2021-11-12 23:02:47,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:02:47,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:02:47,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:02:47,161 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:02:47,161 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:02:47,161 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641579603] [2021-11-12 23:02:47,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641579603] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 23:02:47,162 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075402202] [2021-11-12 23:02:47,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:02:47,162 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:02:47,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:02:47,164 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:02:47,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-12 23:02:47,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:02:47,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 23:02:47,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:02:47,308 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:02:47,309 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:02:47,359 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:02:47,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1075402202] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:02:47,359 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [344632416] [2021-11-12 23:02:47,366 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-12 23:02:47,366 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 23:02:47,366 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 23:02:47,367 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 23:02:47,367 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 23:02:47,382 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:47,383 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:02:47,384 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:47,385 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-11-12 23:02:47,385 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:02:47,386 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:47,386 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:02:47,388 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 163 [2021-11-12 23:02:47,396 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_16|], 36=[|v_#valid_31|]} [2021-11-12 23:02:47,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:47,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:47,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:47,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:47,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:47,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:47,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:47,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:47,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:47,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 16 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 23 [2021-11-12 23:02:47,420 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:47,421 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-12 23:02:47,421 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:47,422 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-12 23:02:47,423 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:02:47,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:47,433 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:47,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:47,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:47,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:47,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:47,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:47,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:47,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:47,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:47,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:47,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:47,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:47,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:47,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:47,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:47,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:47,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:47,470 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 38 [2021-11-12 23:02:47,471 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:47,475 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-12 23:02:47,476 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:47,478 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-12 23:02:47,478 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 23:02:47,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:47,485 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:47,487 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:47,489 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-11-12 23:02:47,490 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:02:47,491 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:160, output treesize:122 [2021-11-12 23:02:47,496 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:47,499 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 133 [2021-11-12 23:02:47,509 INFO L180 QuantifierPusher]: treesize reduction 8, result has 95.1 percent of original size [2021-11-12 23:02:47,514 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:02:47,515 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:47,515 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-12 23:02:47,518 INFO L185 QuantifierPusher]: treesize reduction 3, result has 97.9 percent of original size 138 [2021-11-12 23:02:47,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:47,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:47,533 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 [2021-11-12 23:02:47,534 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:47,536 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 23:02:47,536 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:47,537 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 23:02:47,538 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:02:47,538 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:47,545 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:47,548 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-11-12 23:02:47,550 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 132 [2021-11-12 23:02:47,551 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:02:47,551 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:139, output treesize:132 [2021-11-12 23:02:47,556 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:47,560 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 140 [2021-11-12 23:02:47,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:47,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:47,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:47,652 INFO L180 QuantifierPusher]: treesize reduction 8, result has 97.8 percent of original size [2021-11-12 23:02:47,675 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:02:47,681 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:47,689 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:02:47,690 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:47,691 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 23:02:47,697 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:02:47,704 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:47,706 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-11-12 23:02:47,713 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 327 [2021-11-12 23:02:47,714 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:02:47,718 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:47,723 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 303 [2021-11-12 23:02:47,729 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 378 [2021-11-12 23:02:47,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:47,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:47,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:47,780 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 50 treesize of output 55 [2021-11-12 23:02:47,781 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:47,784 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-11-12 23:02:47,785 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:47,785 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-11-12 23:02:47,786 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:02:47,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:47,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:47,807 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 38 treesize of output 40 [2021-11-12 23:02:47,808 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:47,810 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-12 23:02:47,811 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:47,812 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-12 23:02:47,812 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 23:02:47,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:47,867 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:47,893 INFO L180 QuantifierPusher]: treesize reduction 129, result has 72.0 percent of original size [2021-11-12 23:02:47,901 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 332 [2021-11-12 23:02:47,903 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-12 23:02:47,903 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:469, output treesize:332 [2021-11-12 23:02:47,914 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:47,926 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 338 [2021-11-12 23:02:47,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:47,985 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:47,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:47,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:47,991 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:47,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:47,998 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:48,008 INFO L180 QuantifierPusher]: treesize reduction 50, result has 59.0 percent of original size [2021-11-12 23:02:48,011 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:02:48,012 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:48,012 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 23:02:48,013 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-11-12 23:02:48,021 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-11-12 23:02:48,022 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:48,022 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:02:48,023 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:48,024 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:02:48,024 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:02:48,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:48,028 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:48,029 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:48,030 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-11-12 23:02:48,031 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:02:48,031 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:69, output treesize:65 [2021-11-12 23:02:48,033 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:48,036 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-11-12 23:02:48,048 INFO L180 QuantifierPusher]: treesize reduction 42, result has 70.6 percent of original size [2021-11-12 23:02:48,052 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 106 [2021-11-12 23:02:48,056 INFO L180 QuantifierPusher]: treesize reduction 7, result has 95.0 percent of original size [2021-11-12 23:02:48,061 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-11-12 23:02:48,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:48,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:48,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:48,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:48,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:48,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:48,106 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:48,110 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 146 [2021-11-12 23:02:48,116 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:48,122 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 163 [2021-11-12 23:02:48,126 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:48,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:48,171 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:48,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:48,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:48,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:48,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:48,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:48,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:48,198 INFO L180 QuantifierPusher]: treesize reduction 42, result has 64.4 percent of original size [2021-11-12 23:02:48,208 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-11-12 23:02:48,211 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:48,215 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-11-12 23:02:48,228 INFO L180 QuantifierPusher]: treesize reduction 42, result has 64.4 percent of original size [2021-11-12 23:02:48,230 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-11-12 23:02:48,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:48,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:48,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:48,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:48,308 INFO L180 QuantifierPusher]: treesize reduction 50, result has 59.0 percent of original size [2021-11-12 23:02:48,310 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:02:48,310 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:48,311 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 23:02:48,312 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-11-12 23:02:48,319 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-11-12 23:02:48,320 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:48,321 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:02:48,321 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:48,322 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:02:48,322 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:02:48,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:48,325 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:48,326 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:48,327 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-11-12 23:02:48,328 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:02:48,328 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:69, output treesize:65 [2021-11-12 23:02:48,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:48,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:48,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:48,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:48,402 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 23:02:49,963 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 23:02:49,963 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 23:02:49,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2021-11-12 23:02:49,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8329764] [2021-11-12 23:02:49,964 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 23:02:49,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-12 23:02:49,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:02:49,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-12 23:02:49,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2021-11-12 23:02:49,966 INFO L87 Difference]: Start difference. First operand 22 states and 28 transitions. Second operand has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 10 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) [2021-11-12 23:02:50,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:02:50,043 INFO L93 Difference]: Finished difference Result 32 states and 38 transitions. [2021-11-12 23:02:50,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 23:02:50,045 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 10 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) Word has length 14 [2021-11-12 23:02:50,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:02:50,046 INFO L225 Difference]: With dead ends: 32 [2021-11-12 23:02:50,046 INFO L226 Difference]: Without dead ends: 22 [2021-11-12 23:02:50,047 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2021-11-12 23:02:50,048 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 3 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 60.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.78ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 70.44ms IncrementalHoareTripleChecker+Time [2021-11-12 23:02:50,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 30 Invalid, 52 Unknown, 0 Unchecked, 0.78ms Time], IncrementalHoareTripleChecker [4 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 70.44ms Time] [2021-11-12 23:02:50,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-11-12 23:02:50,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-11-12 23:02:50,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 21 states have internal predecessors, (27), 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) [2021-11-12 23:02:50,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2021-11-12 23:02:50,054 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 14 [2021-11-12 23:02:50,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:02:50,054 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2021-11-12 23:02:50,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 10 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) [2021-11-12 23:02:50,055 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2021-11-12 23:02:50,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-12 23:02:50,056 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:02:50,056 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1] [2021-11-12 23:02:50,104 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-12 23:02:50,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2021-11-12 23:02:50,277 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:02:50,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:02:50,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1372708234, now seen corresponding path program 2 times [2021-11-12 23:02:50,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:02:50,278 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941891637] [2021-11-12 23:02:50,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:02:50,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:02:50,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:02:50,435 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:02:50,436 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:02:50,436 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941891637] [2021-11-12 23:02:50,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941891637] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 23:02:50,437 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082469624] [2021-11-12 23:02:50,437 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-12 23:02:50,437 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:02:50,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:02:50,441 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:02:50,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-12 23:02:50,514 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-11-12 23:02:50,514 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:02:50,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 23:02:50,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:02:50,656 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:02:50,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:02:50,808 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:02:50,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1082469624] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:02:50,809 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [528204306] [2021-11-12 23:02:50,811 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-12 23:02:50,812 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 23:02:50,812 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 23:02:50,812 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 23:02:50,813 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 23:02:50,818 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:50,819 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:02:50,820 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:50,821 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-11-12 23:02:50,821 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:02:50,822 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:50,822 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:02:50,824 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 163 [2021-11-12 23:02:50,828 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_17|], 36=[|v_#valid_32|]} [2021-11-12 23:02:50,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:50,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:50,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:50,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:50,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:50,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:50,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:50,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:50,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:50,851 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 16 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 23 [2021-11-12 23:02:50,853 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:50,853 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-12 23:02:50,854 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:50,855 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-12 23:02:50,855 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:02:50,856 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:50,864 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:50,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:50,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:50,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:50,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:50,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:50,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:50,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:50,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:50,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:50,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:50,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:50,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:50,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:50,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:50,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:50,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:50,895 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 38 [2021-11-12 23:02:50,896 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:50,903 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-12 23:02:50,904 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:50,904 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-12 23:02:50,905 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 23:02:50,905 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:50,913 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:50,915 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:50,917 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-11-12 23:02:50,918 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:02:50,918 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:160, output treesize:122 [2021-11-12 23:02:50,923 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:50,926 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 133 [2021-11-12 23:02:50,931 INFO L180 QuantifierPusher]: treesize reduction 8, result has 95.1 percent of original size [2021-11-12 23:02:50,934 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:02:50,934 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:50,935 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 23:02:50,937 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 147 [2021-11-12 23:02:50,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:50,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:50,952 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 32 treesize of output 34 [2021-11-12 23:02:50,953 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:50,954 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-12 23:02:50,955 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:50,956 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-12 23:02:50,956 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:02:50,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:50,965 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:50,967 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:50,970 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 141 [2021-11-12 23:02:50,970 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:02:50,971 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:145, output treesize:141 [2021-11-12 23:02:50,975 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:50,980 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 149 [2021-11-12 23:02:50,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:51,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:51,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:51,076 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:51,088 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:02:51,092 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:51,094 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:02:51,094 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:51,095 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-11-12 23:02:51,096 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:02:51,097 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:51,098 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 23:02:51,103 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 358 [2021-11-12 23:02:51,103 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:02:51,108 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:51,112 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 334 [2021-11-12 23:02:51,118 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 409 [2021-11-12 23:02:51,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:51,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:51,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:51,158 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 53 treesize of output 58 [2021-11-12 23:02:51,159 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:51,162 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-12 23:02:51,162 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:51,163 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-12 23:02:51,164 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:02:51,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:51,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:51,185 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 38 treesize of output 40 [2021-11-12 23:02:51,186 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:51,187 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-12 23:02:51,188 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:51,189 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-12 23:02:51,189 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 23:02:51,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:51,237 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:51,259 INFO L180 QuantifierPusher]: treesize reduction 142, result has 71.1 percent of original size [2021-11-12 23:02:51,266 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 350 [2021-11-12 23:02:51,267 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-12 23:02:51,267 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:500, output treesize:350 [2021-11-12 23:02:51,275 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:51,283 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 356 [2021-11-12 23:02:51,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:51,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:51,341 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:51,343 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:51,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:51,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:51,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:51,359 INFO L180 QuantifierPusher]: treesize reduction 50, result has 59.0 percent of original size [2021-11-12 23:02:51,361 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:02:51,362 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:51,362 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 23:02:51,363 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-11-12 23:02:51,370 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-11-12 23:02:51,371 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:51,372 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:02:51,372 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:51,373 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:02:51,373 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:02:51,373 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:51,376 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:51,377 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:51,378 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-11-12 23:02:51,378 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:02:51,379 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:69, output treesize:65 [2021-11-12 23:02:51,381 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:51,383 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-11-12 23:02:51,390 INFO L180 QuantifierPusher]: treesize reduction 50, result has 59.0 percent of original size [2021-11-12 23:02:51,392 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:02:51,392 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:51,393 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 23:02:51,394 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-11-12 23:02:51,401 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-11-12 23:02:51,401 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:51,402 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:02:51,403 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:51,403 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:02:51,403 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:02:51,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:51,406 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:51,407 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:51,409 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-11-12 23:02:51,409 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:02:51,410 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:69, output treesize:65 [2021-11-12 23:02:51,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:51,419 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:51,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:51,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:51,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:51,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:51,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:51,506 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:51,548 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 23:02:53,184 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 23:02:53,184 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 23:02:53,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2021-11-12 23:02:53,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497718611] [2021-11-12 23:02:53,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 23:02:53,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-12 23:02:53,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:02:53,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-12 23:02:53,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=444, Unknown=0, NotChecked=0, Total=650 [2021-11-12 23:02:53,187 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand has 20 states, 20 states have (on average 2.0) internal successors, (40), 19 states have internal predecessors, (40), 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) [2021-11-12 23:02:53,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:02:53,310 INFO L93 Difference]: Finished difference Result 99 states and 117 transitions. [2021-11-12 23:02:53,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 23:02:53,311 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.0) internal successors, (40), 19 states have internal predecessors, (40), 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 16 [2021-11-12 23:02:53,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:02:53,313 INFO L225 Difference]: With dead ends: 99 [2021-11-12 23:02:53,313 INFO L226 Difference]: Without dead ends: 90 [2021-11-12 23:02:53,314 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=206, Invalid=444, Unknown=0, NotChecked=0, Total=650 [2021-11-12 23:02:53,315 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 178 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 65.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.35ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 96.01ms IncrementalHoareTripleChecker+Time [2021-11-12 23:02:53,316 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [178 Valid, 64 Invalid, 71 Unknown, 0 Unchecked, 2.35ms Time], IncrementalHoareTripleChecker [10 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 96.01ms Time] [2021-11-12 23:02:53,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-11-12 23:02:53,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 35. [2021-11-12 23:02:53,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.3235294117647058) internal successors, (45), 34 states have internal predecessors, (45), 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) [2021-11-12 23:02:53,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 45 transitions. [2021-11-12 23:02:53,325 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 45 transitions. Word has length 16 [2021-11-12 23:02:53,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:02:53,326 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 45 transitions. [2021-11-12 23:02:53,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.0) internal successors, (40), 19 states have internal predecessors, (40), 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) [2021-11-12 23:02:53,327 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 45 transitions. [2021-11-12 23:02:53,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-12 23:02:53,327 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:02:53,328 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:02:53,377 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-12 23:02:53,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:02:53,553 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:02:53,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:02:53,554 INFO L85 PathProgramCache]: Analyzing trace with hash -653734721, now seen corresponding path program 2 times [2021-11-12 23:02:53,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:02:53,554 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583375385] [2021-11-12 23:02:53,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:02:53,554 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:02:53,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:02:53,760 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:02:53,761 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:02:53,761 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583375385] [2021-11-12 23:02:53,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583375385] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 23:02:53,761 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56468724] [2021-11-12 23:02:53,761 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-12 23:02:53,761 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:02:53,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:02:53,763 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:02:53,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-12 23:02:53,832 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-12 23:02:53,832 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:02:53,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-12 23:02:53,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:02:53,930 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 27 treesize of output 23 [2021-11-12 23:02:54,185 INFO L354 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2021-11-12 23:02:54,186 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 39 [2021-11-12 23:02:54,221 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:02:54,221 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:02:54,914 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 25 [2021-11-12 23:02:54,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 40 [2021-11-12 23:02:55,165 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:02:55,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [56468724] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:02:55,166 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1062703692] [2021-11-12 23:02:55,168 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-12 23:02:55,169 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 23:02:55,169 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 23:02:55,169 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 23:02:55,169 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 23:02:55,175 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:55,176 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:02:55,177 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:55,178 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-11-12 23:02:55,178 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:02:55,179 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:55,179 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:02:55,181 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 163 [2021-11-12 23:02:55,185 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_18|], 36=[|v_#valid_33|]} [2021-11-12 23:02:55,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:55,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:55,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:55,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:55,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:55,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:55,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:55,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:55,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:55,210 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 16 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 23 [2021-11-12 23:02:55,211 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:55,211 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-12 23:02:55,212 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:55,213 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-12 23:02:55,213 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:02:55,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:55,219 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:55,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:55,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:55,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:55,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:55,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:55,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:55,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:55,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:55,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:55,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:55,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:55,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:55,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:55,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:55,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:55,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:55,251 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 38 [2021-11-12 23:02:55,252 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:55,255 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-12 23:02:55,256 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:55,257 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-12 23:02:55,257 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 23:02:55,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:55,263 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:55,265 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:55,267 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-11-12 23:02:55,268 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:02:55,268 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:160, output treesize:122 [2021-11-12 23:02:55,275 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:55,278 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 133 [2021-11-12 23:02:55,284 INFO L180 QuantifierPusher]: treesize reduction 8, result has 95.1 percent of original size [2021-11-12 23:02:55,286 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:02:55,287 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:55,288 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-12 23:02:55,291 INFO L185 QuantifierPusher]: treesize reduction 3, result has 97.9 percent of original size 138 [2021-11-12 23:02:55,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:55,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:55,306 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 [2021-11-12 23:02:55,307 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:55,308 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 23:02:55,309 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:55,310 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 23:02:55,310 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:02:55,311 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:55,316 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:55,319 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-11-12 23:02:55,322 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 132 [2021-11-12 23:02:55,323 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:02:55,323 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:139, output treesize:132 [2021-11-12 23:02:55,327 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:55,332 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 140 [2021-11-12 23:02:55,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:55,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:55,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:55,416 INFO L180 QuantifierPusher]: treesize reduction 8, result has 97.8 percent of original size [2021-11-12 23:02:55,431 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:02:55,435 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:55,437 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:02:55,437 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:55,438 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-12 23:02:55,439 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:02:55,440 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:55,440 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 23:02:55,445 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 322 [2021-11-12 23:02:55,445 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:02:55,449 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:55,452 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 298 [2021-11-12 23:02:55,457 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 373 [2021-11-12 23:02:55,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:55,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:55,484 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 38 treesize of output 40 [2021-11-12 23:02:55,485 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:55,486 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-12 23:02:55,487 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:55,487 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-12 23:02:55,488 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:02:55,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:55,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:55,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:02:55,513 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 45 treesize of output 50 [2021-11-12 23:02:55,514 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:55,516 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-12 23:02:55,517 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:55,517 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-12 23:02:55,518 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 23:02:55,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:55,551 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:55,571 INFO L180 QuantifierPusher]: treesize reduction 128, result has 71.9 percent of original size [2021-11-12 23:02:55,577 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 328 [2021-11-12 23:02:55,578 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-12 23:02:55,579 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:464, output treesize:328 [2021-11-12 23:02:55,586 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:55,594 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 334 [2021-11-12 23:02:55,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:55,639 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:55,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:55,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:55,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:55,646 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:55,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:55,659 INFO L180 QuantifierPusher]: treesize reduction 50, result has 59.0 percent of original size [2021-11-12 23:02:55,661 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:02:55,662 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:55,663 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 23:02:55,664 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-11-12 23:02:55,671 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-11-12 23:02:55,671 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:55,672 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:02:55,672 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:55,673 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:02:55,673 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:02:55,674 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:55,676 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:55,677 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:55,678 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-11-12 23:02:55,678 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:02:55,679 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:69, output treesize:65 [2021-11-12 23:02:55,680 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:55,683 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-11-12 23:02:55,695 INFO L180 QuantifierPusher]: treesize reduction 42, result has 70.6 percent of original size [2021-11-12 23:02:55,698 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 106 [2021-11-12 23:02:55,702 INFO L180 QuantifierPusher]: treesize reduction 7, result has 95.0 percent of original size [2021-11-12 23:02:55,707 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-11-12 23:02:55,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:55,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:55,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:55,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:55,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:55,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:55,742 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:55,746 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 146 [2021-11-12 23:02:55,751 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:55,757 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 163 [2021-11-12 23:02:55,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:55,779 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:55,780 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:55,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:55,783 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:55,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:55,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:55,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:55,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:55,802 INFO L180 QuantifierPusher]: treesize reduction 42, result has 64.4 percent of original size [2021-11-12 23:02:55,804 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-11-12 23:02:55,807 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:55,812 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-11-12 23:02:55,824 INFO L180 QuantifierPusher]: treesize reduction 42, result has 64.4 percent of original size [2021-11-12 23:02:55,826 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-11-12 23:02:55,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:55,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:55,846 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:55,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:55,877 INFO L180 QuantifierPusher]: treesize reduction 50, result has 59.0 percent of original size [2021-11-12 23:02:55,879 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:02:55,879 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:55,880 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 23:02:55,881 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-11-12 23:02:55,888 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-11-12 23:02:55,888 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:55,889 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:02:55,890 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:55,890 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:02:55,890 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:02:55,891 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:55,893 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:55,894 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:55,895 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-11-12 23:02:55,896 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:02:55,896 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:69, output treesize:65 [2021-11-12 23:02:55,897 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:55,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:55,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:55,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:02:55,946 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 23:02:57,673 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 23:02:57,673 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 23:02:57,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2021-11-12 23:02:57,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864935627] [2021-11-12 23:02:57,674 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 23:02:57,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-12 23:02:57,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:02:57,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-12 23:02:57,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=642, Unknown=1, NotChecked=0, Total=756 [2021-11-12 23:02:57,677 INFO L87 Difference]: Start difference. First operand 35 states and 45 transitions. Second operand has 21 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 20 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:02:57,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:02:57,884 INFO L93 Difference]: Finished difference Result 46 states and 56 transitions. [2021-11-12 23:02:57,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-12 23:02:57,885 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 20 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-12 23:02:57,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:02:57,887 INFO L225 Difference]: With dead ends: 46 [2021-11-12 23:02:57,887 INFO L226 Difference]: Without dead ends: 36 [2021-11-12 23:02:57,888 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=151, Invalid=840, Unknown=1, NotChecked=0, Total=992 [2021-11-12 23:02:57,889 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 5 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 60.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.11ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 35 IncrementalHoareTripleChecker+Unchecked, 80.78ms IncrementalHoareTripleChecker+Time [2021-11-12 23:02:57,889 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 45 Invalid, 107 Unknown, 0 Unchecked, 1.11ms Time], IncrementalHoareTripleChecker [3 Valid, 69 Invalid, 0 Unknown, 35 Unchecked, 80.78ms Time] [2021-11-12 23:02:57,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-11-12 23:02:57,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2021-11-12 23:02:57,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.2941176470588236) internal successors, (44), 34 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:02:57,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 44 transitions. [2021-11-12 23:02:57,897 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 44 transitions. Word has length 16 [2021-11-12 23:02:57,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:02:57,897 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 44 transitions. [2021-11-12 23:02:57,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 20 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:02:57,898 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 44 transitions. [2021-11-12 23:02:57,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-12 23:02:57,899 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:02:57,899 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1] [2021-11-12 23:02:57,946 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-12 23:02:58,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable134 [2021-11-12 23:02:58,125 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:02:58,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:02:58,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1663029757, now seen corresponding path program 3 times [2021-11-12 23:02:58,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:02:58,126 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326928403] [2021-11-12 23:02:58,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:02:58,126 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:02:58,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:02:58,319 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:02:58,319 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:02:58,319 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326928403] [2021-11-12 23:02:58,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326928403] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 23:02:58,320 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772216117] [2021-11-12 23:02:58,320 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-12 23:02:58,320 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:02:58,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:02:58,325 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:02:58,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-12 23:02:58,398 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-12 23:02:58,398 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:02:58,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-12 23:02:58,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:02:58,477 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2021-11-12 23:02:58,535 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 35 [2021-11-12 23:02:58,547 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-11-12 23:02:58,548 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 57 [2021-11-12 23:02:58,599 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 35 [2021-11-12 23:02:58,611 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-11-12 23:02:58,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 57 [2021-11-12 23:02:58,665 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-11-12 23:02:58,665 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-11-12 23:02:58,714 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2021-11-12 23:02:58,741 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:02:58,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:03:01,008 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 31 [2021-11-12 23:03:01,013 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 88 [2021-11-12 23:03:01,152 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 23:03:01,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772216117] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:03:01,152 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1284539349] [2021-11-12 23:03:01,155 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-12 23:03:01,155 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 23:03:01,156 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 23:03:01,156 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 23:03:01,156 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 23:03:01,164 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:01,165 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:03:01,166 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:01,171 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:03:01,171 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:03:01,172 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:01,172 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-11-12 23:03:01,174 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 163 [2021-11-12 23:03:01,176 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_19|], 36=[|v_#valid_34|]} [2021-11-12 23:03:01,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:01,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:01,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:01,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:01,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:01,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:01,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:01,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:01,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:01,193 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 16 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 23 [2021-11-12 23:03:01,193 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:01,194 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-12 23:03:01,194 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:01,195 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-12 23:03:01,196 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:03:01,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:01,205 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:01,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:01,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:01,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:01,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:01,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:01,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:01,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:01,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:01,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:01,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:01,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:01,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:01,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:01,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:01,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:01,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:01,265 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 38 [2021-11-12 23:03:01,266 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:01,269 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-12 23:03:01,270 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:01,270 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-12 23:03:01,271 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 23:03:01,271 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:01,276 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:01,278 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:01,280 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-11-12 23:03:01,281 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:03:01,282 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:160, output treesize:122 [2021-11-12 23:03:01,287 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:01,291 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 133 [2021-11-12 23:03:01,295 INFO L180 QuantifierPusher]: treesize reduction 8, result has 95.1 percent of original size [2021-11-12 23:03:01,297 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:03:01,298 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:01,298 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-12 23:03:01,300 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 152 [2021-11-12 23:03:01,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:01,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:01,316 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 [2021-11-12 23:03:01,317 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:01,319 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-12 23:03:01,320 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:01,320 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-12 23:03:01,321 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:03:01,321 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:01,325 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:01,326 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:01,327 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 146 [2021-11-12 23:03:01,328 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:03:01,328 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:150, output treesize:146 [2021-11-12 23:03:01,331 INFO L180 QuantifierPusher]: treesize reduction 7, result has 95.7 percent of original size [2021-11-12 23:03:01,336 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 147 [2021-11-12 23:03:01,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:01,354 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:01,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:01,403 INFO L180 QuantifierPusher]: treesize reduction 5, result has 98.7 percent of original size [2021-11-12 23:03:01,415 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:03:01,419 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:01,421 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:03:01,421 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:01,422 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 23:03:01,423 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:03:01,424 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:01,424 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-11-12 23:03:01,429 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 335 [2021-11-12 23:03:01,429 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:03:01,433 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:01,438 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 311 [2021-11-12 23:03:01,443 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 386 [2021-11-12 23:03:01,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:01,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:01,471 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 38 treesize of output 40 [2021-11-12 23:03:01,472 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:01,474 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-12 23:03:01,474 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:01,475 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-12 23:03:01,475 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:03:01,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:01,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:01,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:01,498 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 50 treesize of output 55 [2021-11-12 23:03:01,499 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:01,501 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-11-12 23:03:01,502 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:01,502 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-11-12 23:03:01,503 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 23:03:01,503 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:01,545 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:01,559 INFO L180 QuantifierPusher]: treesize reduction 124, result has 73.6 percent of original size [2021-11-12 23:03:01,564 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 345 [2021-11-12 23:03:01,565 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-12 23:03:01,566 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:477, output treesize:345 [2021-11-12 23:03:01,571 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:01,578 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 351 [2021-11-12 23:03:01,587 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:01,622 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:01,623 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:01,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:01,626 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:01,627 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:01,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:01,640 INFO L180 QuantifierPusher]: treesize reduction 50, result has 59.0 percent of original size [2021-11-12 23:03:01,642 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:03:01,642 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:01,643 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 23:03:01,644 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-11-12 23:03:01,651 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-11-12 23:03:01,651 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:01,652 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:03:01,653 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:01,653 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:03:01,653 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:03:01,654 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:01,656 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:01,657 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:01,658 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-11-12 23:03:01,659 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:03:01,659 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:69, output treesize:65 [2021-11-12 23:03:01,661 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:01,663 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-11-12 23:03:01,677 INFO L180 QuantifierPusher]: treesize reduction 50, result has 59.0 percent of original size [2021-11-12 23:03:01,679 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:03:01,680 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:01,680 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 23:03:01,681 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-11-12 23:03:01,688 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-11-12 23:03:01,689 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:01,689 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:03:01,690 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:01,690 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:03:01,691 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:03:01,691 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:01,693 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:01,694 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:01,695 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-11-12 23:03:01,696 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:03:01,696 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:69, output treesize:65 [2021-11-12 23:03:01,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:01,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:01,711 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:01,718 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:01,736 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 23:03:03,131 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 23:03:03,131 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 23:03:03,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 14 [2021-11-12 23:03:03,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167566014] [2021-11-12 23:03:03,132 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 23:03:03,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-12 23:03:03,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:03:03,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-12 23:03:03,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2021-11-12 23:03:03,142 INFO L87 Difference]: Start difference. First operand 35 states and 44 transitions. Second operand has 15 states, 15 states have (on average 2.066666666666667) internal successors, (31), 14 states have internal predecessors, (31), 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) [2021-11-12 23:03:03,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:03:03,322 INFO L93 Difference]: Finished difference Result 41 states and 50 transitions. [2021-11-12 23:03:03,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-12 23:03:03,323 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.066666666666667) internal successors, (31), 14 states have internal predecessors, (31), 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 17 [2021-11-12 23:03:03,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:03:03,324 INFO L225 Difference]: With dead ends: 41 [2021-11-12 23:03:03,325 INFO L226 Difference]: Without dead ends: 39 [2021-11-12 23:03:03,325 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 26 SyntacticMatches, 13 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=113, Invalid=487, Unknown=0, NotChecked=0, Total=600 [2021-11-12 23:03:03,326 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 23 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 88.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.17ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1 IncrementalHoareTripleChecker+Unchecked, 101.59ms IncrementalHoareTripleChecker+Time [2021-11-12 23:03:03,327 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 23 Invalid, 115 Unknown, 0 Unchecked, 1.17ms Time], IncrementalHoareTripleChecker [12 Valid, 102 Invalid, 0 Unknown, 1 Unchecked, 101.59ms Time] [2021-11-12 23:03:03,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-11-12 23:03:03,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 34. [2021-11-12 23:03:03,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.303030303030303) internal successors, (43), 33 states have internal predecessors, (43), 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) [2021-11-12 23:03:03,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 43 transitions. [2021-11-12 23:03:03,333 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 43 transitions. Word has length 17 [2021-11-12 23:03:03,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:03:03,334 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 43 transitions. [2021-11-12 23:03:03,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.066666666666667) internal successors, (31), 14 states have internal predecessors, (31), 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) [2021-11-12 23:03:03,334 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 43 transitions. [2021-11-12 23:03:03,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-12 23:03:03,335 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:03:03,336 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 2, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:03:03,366 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-12 23:03:03,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:03:03,542 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:03:03,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:03:03,543 INFO L85 PathProgramCache]: Analyzing trace with hash -979873480, now seen corresponding path program 3 times [2021-11-12 23:03:03,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:03:03,544 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195574470] [2021-11-12 23:03:03,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:03:03,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:03:03,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:03:03,757 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:03:03,757 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:03:03,757 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195574470] [2021-11-12 23:03:03,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195574470] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 23:03:03,758 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752881724] [2021-11-12 23:03:03,758 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-12 23:03:03,758 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:03:03,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:03:03,760 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:03:03,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-12 23:03:03,821 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-12 23:03:03,821 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:03:03,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-12 23:03:03,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:03:03,871 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 19 treesize of output 15 [2021-11-12 23:03:03,927 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-12 23:03:03,928 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2021-11-12 23:03:03,996 INFO L354 Elim1Store]: treesize reduction 72, result has 20.9 percent of original size [2021-11-12 23:03:03,996 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 43 [2021-11-12 23:03:04,258 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-12 23:03:04,259 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 30 [2021-11-12 23:03:04,295 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:03:04,295 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:03:06,717 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~j~0#1_80| Int) (|v_ULTIMATE.start_main_~i~0#1_94| Int)) (let ((.cse0 (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)) |c_ULTIMATE.start_main_~j~0#1|) (+ (* |v_ULTIMATE.start_main_~i~0#1_94| 4) |c_ULTIMATE.start_main_~#a~0#1.offset|) |v_ULTIMATE.start_main_~j~0#1_80|))) (or (< |v_ULTIMATE.start_main_~i~0#1_94| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (<= 0 (select .cse0 (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 8))) (<= |v_ULTIMATE.start_main_~i~0#1_94| 1) (< (select .cse0 (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 4)) 0)))) is different from false [2021-11-12 23:03:06,795 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 72 [2021-11-12 23:03:06,810 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-12 23:03:06,811 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 806 treesize of output 790 [2021-11-12 23:03:07,545 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 8 not checked. [2021-11-12 23:03:07,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [752881724] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:03:07,545 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [447148951] [2021-11-12 23:03:07,551 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-12 23:03:07,552 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 23:03:07,552 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 23:03:07,553 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 23:03:07,553 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 23:03:07,565 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:07,566 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:03:07,566 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:07,567 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:03:07,568 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:03:07,568 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:07,569 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-11-12 23:03:07,570 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 163 [2021-11-12 23:03:07,575 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_20|], 36=[|v_#valid_35|]} [2021-11-12 23:03:07,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:07,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:07,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:07,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:07,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:07,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:07,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:07,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:07,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:07,599 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 16 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 23 [2021-11-12 23:03:07,600 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:07,600 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-12 23:03:07,601 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:07,602 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-12 23:03:07,602 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:03:07,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:07,607 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:07,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:07,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:07,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:07,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:07,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:07,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:07,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:07,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:07,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:07,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:07,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:07,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:07,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:07,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:07,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:07,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:07,637 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 38 [2021-11-12 23:03:07,638 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:07,640 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-12 23:03:07,641 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:07,642 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-12 23:03:07,642 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 23:03:07,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:07,647 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:07,649 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:07,651 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-11-12 23:03:07,651 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:03:07,652 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:160, output treesize:122 [2021-11-12 23:03:07,657 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:07,659 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 133 [2021-11-12 23:03:07,663 INFO L180 QuantifierPusher]: treesize reduction 8, result has 95.1 percent of original size [2021-11-12 23:03:07,666 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:03:07,666 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:07,667 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-12 23:03:07,669 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 152 [2021-11-12 23:03:07,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:07,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:07,689 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 [2021-11-12 23:03:07,690 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:07,692 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-12 23:03:07,692 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:07,693 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-12 23:03:07,693 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:03:07,694 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:07,699 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:07,701 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:07,703 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 146 [2021-11-12 23:03:07,704 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:03:07,704 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:150, output treesize:146 [2021-11-12 23:03:07,708 INFO L180 QuantifierPusher]: treesize reduction 7, result has 95.7 percent of original size [2021-11-12 23:03:07,711 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 147 [2021-11-12 23:03:07,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:07,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:07,749 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:07,792 INFO L180 QuantifierPusher]: treesize reduction 5, result has 98.7 percent of original size [2021-11-12 23:03:07,802 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:03:07,806 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:07,807 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:03:07,808 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:07,808 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 23:03:07,809 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:03:07,810 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:07,811 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-11-12 23:03:07,815 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 335 [2021-11-12 23:03:07,816 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:03:07,819 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:07,823 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 311 [2021-11-12 23:03:07,828 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 386 [2021-11-12 23:03:07,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:07,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:07,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:07,860 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 50 treesize of output 55 [2021-11-12 23:03:07,861 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:07,862 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-11-12 23:03:07,863 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:07,864 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-11-12 23:03:07,864 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:03:07,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:07,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:07,888 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 38 treesize of output 40 [2021-11-12 23:03:07,889 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:07,891 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-12 23:03:07,891 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:07,892 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-12 23:03:07,893 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 23:03:07,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:07,924 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:07,938 INFO L180 QuantifierPusher]: treesize reduction 124, result has 73.6 percent of original size [2021-11-12 23:03:07,943 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 345 [2021-11-12 23:03:07,944 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-12 23:03:07,944 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:477, output treesize:345 [2021-11-12 23:03:07,951 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:07,957 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 351 [2021-11-12 23:03:07,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:08,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:08,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:08,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:08,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:08,005 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:08,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:08,017 INFO L180 QuantifierPusher]: treesize reduction 50, result has 59.0 percent of original size [2021-11-12 23:03:08,018 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:03:08,019 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:08,020 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 23:03:08,021 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-11-12 23:03:08,027 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-11-12 23:03:08,028 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:08,029 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:03:08,029 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:08,030 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:03:08,030 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:03:08,030 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:08,032 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:08,034 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:08,035 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-11-12 23:03:08,035 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:03:08,036 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:69, output treesize:65 [2021-11-12 23:03:08,038 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:08,040 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-11-12 23:03:08,060 INFO L180 QuantifierPusher]: treesize reduction 42, result has 70.6 percent of original size [2021-11-12 23:03:08,063 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 106 [2021-11-12 23:03:08,066 INFO L180 QuantifierPusher]: treesize reduction 7, result has 95.0 percent of original size [2021-11-12 23:03:08,071 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-11-12 23:03:08,074 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:08,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:08,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:08,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:08,090 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:08,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:08,103 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:08,107 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 146 [2021-11-12 23:03:08,112 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:08,117 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 163 [2021-11-12 23:03:08,121 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:08,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:08,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:08,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:08,143 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:08,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:08,146 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:08,147 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:08,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:08,162 INFO L180 QuantifierPusher]: treesize reduction 42, result has 64.4 percent of original size [2021-11-12 23:03:08,165 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-11-12 23:03:08,167 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:08,172 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-11-12 23:03:08,186 INFO L180 QuantifierPusher]: treesize reduction 42, result has 64.4 percent of original size [2021-11-12 23:03:08,188 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-11-12 23:03:08,191 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:08,199 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:08,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:08,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:08,240 INFO L180 QuantifierPusher]: treesize reduction 50, result has 59.0 percent of original size [2021-11-12 23:03:08,242 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:03:08,243 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:08,243 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 23:03:08,244 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-11-12 23:03:08,251 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-11-12 23:03:08,252 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:08,252 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:03:08,253 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:08,253 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:03:08,254 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:03:08,254 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:08,256 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:08,257 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:08,258 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-11-12 23:03:08,259 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:03:08,259 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:69, output treesize:65 [2021-11-12 23:03:08,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:08,267 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:08,282 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:08,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:08,338 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 23:03:09,955 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 23:03:09,955 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 23:03:09,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 26 [2021-11-12 23:03:09,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965910312] [2021-11-12 23:03:09,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 23:03:09,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-12 23:03:09,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:03:09,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-12 23:03:09,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=933, Unknown=1, NotChecked=62, Total=1122 [2021-11-12 23:03:09,958 INFO L87 Difference]: Start difference. First operand 34 states and 43 transitions. Second operand has 27 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 26 states have internal predecessors, (47), 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) [2021-11-12 23:03:11,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:03:11,355 INFO L93 Difference]: Finished difference Result 41 states and 50 transitions. [2021-11-12 23:03:11,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-12 23:03:11,356 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 26 states have internal predecessors, (47), 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 18 [2021-11-12 23:03:11,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:03:11,357 INFO L225 Difference]: With dead ends: 41 [2021-11-12 23:03:11,357 INFO L226 Difference]: Without dead ends: 39 [2021-11-12 23:03:11,358 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=244, Invalid=1481, Unknown=1, NotChecked=80, Total=1806 [2021-11-12 23:03:11,359 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 49 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 146.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.81ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 26 IncrementalHoareTripleChecker+Unchecked, 168.12ms IncrementalHoareTripleChecker+Time [2021-11-12 23:03:11,360 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 38 Invalid, 221 Unknown, 0 Unchecked, 1.81ms Time], IncrementalHoareTripleChecker [37 Valid, 158 Invalid, 0 Unknown, 26 Unchecked, 168.12ms Time] [2021-11-12 23:03:11,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-11-12 23:03:11,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2021-11-12 23:03:11,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.2777777777777777) internal successors, (46), 36 states have internal predecessors, (46), 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) [2021-11-12 23:03:11,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 46 transitions. [2021-11-12 23:03:11,367 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 46 transitions. Word has length 18 [2021-11-12 23:03:11,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:03:11,368 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 46 transitions. [2021-11-12 23:03:11,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 26 states have internal predecessors, (47), 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) [2021-11-12 23:03:11,369 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 46 transitions. [2021-11-12 23:03:11,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-12 23:03:11,370 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:03:11,370 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 3, 2, 2, 1, 1, 1, 1, 1] [2021-11-12 23:03:11,420 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-12 23:03:11,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:03:11,593 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:03:11,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:03:11,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1486991388, now seen corresponding path program 4 times [2021-11-12 23:03:11,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:03:11,594 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210760419] [2021-11-12 23:03:11,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:03:11,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:03:11,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:03:11,939 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:03:11,939 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:03:11,940 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210760419] [2021-11-12 23:03:11,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210760419] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 23:03:11,940 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094433332] [2021-11-12 23:03:11,940 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-12 23:03:11,940 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:03:11,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:03:11,957 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:03:11,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-12 23:03:12,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:03:12,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-12 23:03:12,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:03:12,199 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 29 treesize of output 25 [2021-11-12 23:03:12,591 INFO L354 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2021-11-12 23:03:12,592 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 36 [2021-11-12 23:03:12,624 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:03:12,625 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:03:12,784 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2021-11-12 23:03:12,787 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2021-11-12 23:03:13,001 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:03:13,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094433332] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:03:13,001 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [304632829] [2021-11-12 23:03:13,004 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-12 23:03:13,004 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 23:03:13,005 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 23:03:13,005 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 23:03:13,005 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 23:03:13,014 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:13,015 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:03:13,016 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:13,016 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:03:13,017 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:03:13,018 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:13,018 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-11-12 23:03:13,020 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 163 [2021-11-12 23:03:13,031 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_21|], 36=[|v_#valid_36|]} [2021-11-12 23:03:13,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:13,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:13,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:13,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:13,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:13,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:13,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:13,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:13,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:13,057 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 16 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 23 [2021-11-12 23:03:13,058 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:13,058 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-12 23:03:13,059 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:13,060 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-12 23:03:13,060 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:03:13,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:13,066 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:13,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:13,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:13,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:13,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:13,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:13,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:13,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:13,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:13,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:13,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:13,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:13,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:13,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:13,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:13,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:13,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:13,098 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 38 [2021-11-12 23:03:13,099 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:13,102 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-12 23:03:13,103 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:13,104 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-12 23:03:13,104 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 23:03:13,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:13,109 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:13,111 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:13,113 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-11-12 23:03:13,114 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:03:13,114 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:160, output treesize:122 [2021-11-12 23:03:13,119 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:13,122 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 133 [2021-11-12 23:03:13,126 INFO L180 QuantifierPusher]: treesize reduction 8, result has 95.1 percent of original size [2021-11-12 23:03:13,129 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:03:13,129 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:13,130 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 23:03:13,132 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 147 [2021-11-12 23:03:13,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:13,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:13,146 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 32 treesize of output 34 [2021-11-12 23:03:13,146 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:13,148 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-12 23:03:13,148 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:13,149 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-12 23:03:13,149 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:03:13,150 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:13,156 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:13,158 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:13,160 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 141 [2021-11-12 23:03:13,161 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:03:13,161 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:145, output treesize:141 [2021-11-12 23:03:13,164 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:13,168 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 149 [2021-11-12 23:03:13,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:13,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:13,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:13,233 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:13,243 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:03:13,248 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:13,249 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:03:13,249 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:13,250 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-11-12 23:03:13,251 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:03:13,252 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:13,252 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 23:03:13,257 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 358 [2021-11-12 23:03:13,257 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:03:13,261 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:13,266 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 334 [2021-11-12 23:03:13,271 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 409 [2021-11-12 23:03:13,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:13,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:13,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:13,315 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 53 treesize of output 58 [2021-11-12 23:03:13,316 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:13,318 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-12 23:03:13,319 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:13,319 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-12 23:03:13,320 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:03:13,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:13,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:13,341 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 38 treesize of output 40 [2021-11-12 23:03:13,341 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:13,343 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-12 23:03:13,344 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:13,344 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-12 23:03:13,345 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 23:03:13,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:13,383 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:13,397 INFO L180 QuantifierPusher]: treesize reduction 142, result has 71.1 percent of original size [2021-11-12 23:03:13,403 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 350 [2021-11-12 23:03:13,404 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-12 23:03:13,404 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:500, output treesize:350 [2021-11-12 23:03:13,411 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:13,419 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 356 [2021-11-12 23:03:13,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:13,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:13,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:13,489 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:13,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:13,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:13,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:13,506 INFO L180 QuantifierPusher]: treesize reduction 50, result has 59.0 percent of original size [2021-11-12 23:03:13,507 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:03:13,508 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:13,508 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 23:03:13,510 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-11-12 23:03:13,516 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-11-12 23:03:13,517 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:13,518 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:03:13,518 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:13,519 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:03:13,519 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:03:13,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:13,523 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:13,524 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:13,525 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-11-12 23:03:13,527 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:03:13,527 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:69, output treesize:65 [2021-11-12 23:03:13,529 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:13,531 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-11-12 23:03:13,546 INFO L180 QuantifierPusher]: treesize reduction 42, result has 70.6 percent of original size [2021-11-12 23:03:13,549 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 106 [2021-11-12 23:03:13,552 INFO L180 QuantifierPusher]: treesize reduction 7, result has 95.0 percent of original size [2021-11-12 23:03:13,556 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-11-12 23:03:13,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:13,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:13,574 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:13,575 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:13,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:13,599 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:13,610 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:13,614 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 146 [2021-11-12 23:03:13,618 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:13,629 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 163 [2021-11-12 23:03:13,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:13,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:13,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:13,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:13,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:13,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:13,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:13,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:13,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:13,682 INFO L180 QuantifierPusher]: treesize reduction 42, result has 64.4 percent of original size [2021-11-12 23:03:13,684 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-11-12 23:03:13,687 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:13,691 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-11-12 23:03:13,704 INFO L180 QuantifierPusher]: treesize reduction 42, result has 64.4 percent of original size [2021-11-12 23:03:13,707 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-11-12 23:03:13,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:13,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:13,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:13,741 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:13,763 INFO L180 QuantifierPusher]: treesize reduction 50, result has 59.0 percent of original size [2021-11-12 23:03:13,764 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:03:13,765 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:13,765 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 23:03:13,766 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-11-12 23:03:13,773 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-11-12 23:03:13,773 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:13,774 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:03:13,774 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:13,775 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:03:13,775 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:03:13,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:13,778 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:13,779 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:13,780 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-11-12 23:03:13,780 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:03:13,781 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:69, output treesize:65 [2021-11-12 23:03:13,781 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:13,789 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:13,799 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:13,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:13,825 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 23:03:15,466 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 23:03:15,466 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 23:03:15,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 24 [2021-11-12 23:03:15,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14899110] [2021-11-12 23:03:15,467 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 23:03:15,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-12 23:03:15,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:03:15,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-12 23:03:15,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=894, Unknown=0, NotChecked=0, Total=992 [2021-11-12 23:03:15,469 INFO L87 Difference]: Start difference. First operand 37 states and 46 transitions. Second operand has 25 states, 25 states have (on average 2.2) internal successors, (55), 24 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) [2021-11-12 23:03:15,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:03:15,899 INFO L93 Difference]: Finished difference Result 50 states and 59 transitions. [2021-11-12 23:03:15,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 23:03:15,899 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.2) internal successors, (55), 24 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 21 [2021-11-12 23:03:15,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:03:15,900 INFO L225 Difference]: With dead ends: 50 [2021-11-12 23:03:15,900 INFO L226 Difference]: Without dead ends: 37 [2021-11-12 23:03:15,901 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 38 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=155, Invalid=1251, Unknown=0, NotChecked=0, Total=1406 [2021-11-12 23:03:15,902 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 9 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 160.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.77ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 36 IncrementalHoareTripleChecker+Unchecked, 186.16ms IncrementalHoareTripleChecker+Time [2021-11-12 23:03:15,902 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 85 Invalid, 285 Unknown, 0 Unchecked, 1.77ms Time], IncrementalHoareTripleChecker [17 Valid, 232 Invalid, 0 Unknown, 36 Unchecked, 186.16ms Time] [2021-11-12 23:03:15,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-11-12 23:03:15,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-11-12 23:03:15,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.25) internal successors, (45), 36 states have internal predecessors, (45), 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) [2021-11-12 23:03:15,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2021-11-12 23:03:15,909 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 21 [2021-11-12 23:03:15,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:03:15,909 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2021-11-12 23:03:15,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.2) internal successors, (55), 24 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) [2021-11-12 23:03:15,910 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2021-11-12 23:03:15,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-12 23:03:15,911 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:03:15,911 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 3, 2, 2, 1, 1, 1, 1, 1] [2021-11-12 23:03:15,937 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-12 23:03:16,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable235 [2021-11-12 23:03:16,113 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:03:16,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:03:16,113 INFO L85 PathProgramCache]: Analyzing trace with hash -73461949, now seen corresponding path program 5 times [2021-11-12 23:03:16,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:03:16,113 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051750704] [2021-11-12 23:03:16,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:03:16,114 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:03:16,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:03:16,375 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:03:16,375 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:03:16,376 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051750704] [2021-11-12 23:03:16,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051750704] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 23:03:16,376 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443164546] [2021-11-12 23:03:16,376 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-12 23:03:16,376 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:03:16,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:03:16,377 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:03:16,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-12 23:03:16,443 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-11-12 23:03:16,443 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:03:16,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-12 23:03:16,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:03:16,580 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 17 treesize of output 13 [2021-11-12 23:03:16,634 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-11-12 23:03:16,635 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-11-12 23:03:16,814 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2021-11-12 23:03:16,850 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:03:16,850 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:03:17,057 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 27 [2021-11-12 23:03:17,061 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 191 treesize of output 183 [2021-11-12 23:03:17,399 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:03:17,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1443164546] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:03:17,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1060068229] [2021-11-12 23:03:17,403 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-12 23:03:17,404 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 23:03:17,404 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 23:03:17,405 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 23:03:17,405 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 23:03:17,415 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:17,415 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:03:17,416 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:17,417 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:03:17,417 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:03:17,418 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:17,419 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-11-12 23:03:17,421 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 163 [2021-11-12 23:03:17,428 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_22|], 36=[|v_#valid_37|]} [2021-11-12 23:03:17,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:17,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:17,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:17,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:17,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:17,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:17,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:17,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:17,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:17,447 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 16 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 23 [2021-11-12 23:03:17,448 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:17,448 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-12 23:03:17,449 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:17,449 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-12 23:03:17,450 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:03:17,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:17,454 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:17,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:17,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:17,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:17,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:17,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:17,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:17,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:17,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:17,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:17,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:17,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:17,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:17,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:17,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:17,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:17,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:17,483 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 38 [2021-11-12 23:03:17,484 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:17,487 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-12 23:03:17,487 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:17,488 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-12 23:03:17,488 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 23:03:17,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:17,492 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:17,494 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:17,496 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-11-12 23:03:17,497 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:03:17,498 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:160, output treesize:122 [2021-11-12 23:03:17,506 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:17,508 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 133 [2021-11-12 23:03:17,511 INFO L180 QuantifierPusher]: treesize reduction 8, result has 95.1 percent of original size [2021-11-12 23:03:17,513 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:03:17,513 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:17,514 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 23:03:17,516 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 160 [2021-11-12 23:03:17,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:17,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:17,529 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 38 treesize of output 40 [2021-11-12 23:03:17,529 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:17,531 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-12 23:03:17,532 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:17,533 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-12 23:03:17,533 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:03:17,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:17,539 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:17,541 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:17,544 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 154 [2021-11-12 23:03:17,544 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:03:17,545 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:158, output treesize:154 [2021-11-12 23:03:17,549 INFO L180 QuantifierPusher]: treesize reduction 11, result has 93.5 percent of original size [2021-11-12 23:03:17,553 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 151 [2021-11-12 23:03:17,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:17,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:17,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:17,618 INFO L180 QuantifierPusher]: treesize reduction 8, result has 97.9 percent of original size [2021-11-12 23:03:17,627 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:03:17,631 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:17,632 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:03:17,632 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:17,633 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 23:03:17,634 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:03:17,635 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:17,636 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-11-12 23:03:17,640 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 337 [2021-11-12 23:03:17,640 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:03:17,644 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:17,647 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 313 [2021-11-12 23:03:17,652 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 388 [2021-11-12 23:03:17,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:17,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:17,684 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 38 treesize of output 40 [2021-11-12 23:03:17,685 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:17,686 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-12 23:03:17,687 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:17,688 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-12 23:03:17,689 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:03:17,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:17,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:17,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:17,715 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 58 treesize of output 63 [2021-11-12 23:03:17,716 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:17,718 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-11-12 23:03:17,719 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:17,720 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-11-12 23:03:17,720 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 23:03:17,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:17,751 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:17,766 INFO L180 QuantifierPusher]: treesize reduction 120, result has 74.5 percent of original size [2021-11-12 23:03:17,771 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 351 [2021-11-12 23:03:17,772 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-12 23:03:17,773 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:479, output treesize:351 [2021-11-12 23:03:17,778 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:17,785 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 357 [2021-11-12 23:03:17,795 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:17,831 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:17,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:17,834 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:17,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:17,846 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:17,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:17,864 INFO L180 QuantifierPusher]: treesize reduction 50, result has 59.0 percent of original size [2021-11-12 23:03:17,866 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:03:17,866 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:17,867 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 23:03:17,868 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-11-12 23:03:17,875 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-11-12 23:03:17,875 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:17,876 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:03:17,876 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:17,877 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:03:17,877 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:03:17,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:17,880 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:17,881 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:17,882 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-11-12 23:03:17,882 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:03:17,883 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:69, output treesize:65 [2021-11-12 23:03:17,884 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:17,887 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-11-12 23:03:17,914 INFO L180 QuantifierPusher]: treesize reduction 42, result has 70.6 percent of original size [2021-11-12 23:03:17,918 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 106 [2021-11-12 23:03:17,921 INFO L180 QuantifierPusher]: treesize reduction 7, result has 95.0 percent of original size [2021-11-12 23:03:17,924 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-11-12 23:03:17,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:17,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:17,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:17,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:17,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:17,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:17,950 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:17,953 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 146 [2021-11-12 23:03:17,956 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:17,961 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 163 [2021-11-12 23:03:17,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:17,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:17,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:17,990 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:17,991 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:17,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:17,994 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:17,995 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:18,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:18,009 INFO L180 QuantifierPusher]: treesize reduction 42, result has 64.4 percent of original size [2021-11-12 23:03:18,011 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-11-12 23:03:18,014 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:18,018 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-11-12 23:03:18,027 INFO L180 QuantifierPusher]: treesize reduction 42, result has 64.4 percent of original size [2021-11-12 23:03:18,029 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-11-12 23:03:18,030 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:18,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:18,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:18,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:18,078 INFO L180 QuantifierPusher]: treesize reduction 50, result has 59.0 percent of original size [2021-11-12 23:03:18,079 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:03:18,080 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:18,081 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 23:03:18,082 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-11-12 23:03:18,088 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-11-12 23:03:18,089 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:18,089 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:03:18,090 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:18,090 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:03:18,091 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:03:18,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:18,093 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:18,094 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:18,095 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-11-12 23:03:18,095 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:03:18,096 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:69, output treesize:65 [2021-11-12 23:03:18,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:18,103 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:18,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:18,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:18,130 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 23:03:19,714 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 23:03:19,714 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 23:03:19,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2021-11-12 23:03:19,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315465972] [2021-11-12 23:03:19,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 23:03:19,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-12 23:03:19,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:03:19,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-12 23:03:19,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=1279, Unknown=0, NotChecked=0, Total=1406 [2021-11-12 23:03:19,717 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand has 31 states, 31 states have (on average 2.129032258064516) internal successors, (66), 30 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) [2021-11-12 23:03:20,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:03:20,434 INFO L93 Difference]: Finished difference Result 44 states and 52 transitions. [2021-11-12 23:03:20,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 23:03:20,435 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.129032258064516) internal successors, (66), 30 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 23 [2021-11-12 23:03:20,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:03:20,435 INFO L225 Difference]: With dead ends: 44 [2021-11-12 23:03:20,435 INFO L226 Difference]: Without dead ends: 42 [2021-11-12 23:03:20,437 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=242, Invalid=1920, Unknown=0, NotChecked=0, Total=2162 [2021-11-12 23:03:20,437 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 46 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 195.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.91ms SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 244.48ms IncrementalHoareTripleChecker+Time [2021-11-12 23:03:20,438 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 95 Invalid, 357 Unknown, 0 Unchecked, 2.91ms Time], IncrementalHoareTripleChecker [41 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 244.48ms Time] [2021-11-12 23:03:20,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-11-12 23:03:20,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2021-11-12 23:03:20,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.2307692307692308) internal successors, (48), 39 states have internal predecessors, (48), 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) [2021-11-12 23:03:20,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2021-11-12 23:03:20,445 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 23 [2021-11-12 23:03:20,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:03:20,446 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2021-11-12 23:03:20,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.129032258064516) internal successors, (66), 30 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) [2021-11-12 23:03:20,446 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2021-11-12 23:03:20,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-12 23:03:20,447 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:03:20,448 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 4, 3, 3, 1, 1, 1, 1, 1] [2021-11-12 23:03:20,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-12 23:03:20,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable275,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:03:20,661 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:03:20,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:03:20,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1933521457, now seen corresponding path program 6 times [2021-11-12 23:03:20,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:03:20,661 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390833314] [2021-11-12 23:03:20,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:03:20,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:03:20,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:03:20,954 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:03:20,954 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:03:20,954 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390833314] [2021-11-12 23:03:20,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390833314] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 23:03:20,955 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244313409] [2021-11-12 23:03:20,955 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-12 23:03:20,955 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:03:20,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:03:20,956 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:03:20,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-12 23:03:21,020 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-12 23:03:21,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:03:21,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-12 23:03:21,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:03:21,101 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 24 treesize of output 20 [2021-11-12 23:03:21,162 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-11-12 23:03:21,163 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 39 [2021-11-12 23:03:21,256 INFO L354 Elim1Store]: treesize reduction 96, result has 20.7 percent of original size [2021-11-12 23:03:21,257 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 65 treesize of output 58 [2021-11-12 23:03:24,160 INFO L354 Elim1Store]: treesize reduction 166, result has 4.0 percent of original size [2021-11-12 23:03:24,161 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 102 treesize of output 56 [2021-11-12 23:03:24,217 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 9 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:03:24,218 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:03:35,706 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 85 [2021-11-12 23:03:35,717 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-12 23:03:35,718 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1000 treesize of output 974 [2021-11-12 23:03:36,098 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:03:36,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244313409] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:03:36,099 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [416925909] [2021-11-12 23:03:36,101 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-12 23:03:36,101 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 23:03:36,101 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 23:03:36,101 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 23:03:36,102 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 23:03:36,107 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:36,108 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:03:36,109 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:36,110 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-11-12 23:03:36,110 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:03:36,110 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:36,111 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:03:36,112 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 163 [2021-11-12 23:03:36,114 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_23|], 36=[|v_#valid_38|]} [2021-11-12 23:03:36,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:36,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:36,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:36,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:36,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:36,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:36,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:36,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:36,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:36,143 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 16 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 23 [2021-11-12 23:03:36,143 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:36,144 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-12 23:03:36,145 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:36,146 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-12 23:03:36,146 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:03:36,146 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:36,151 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:36,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:36,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:36,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:36,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:36,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:36,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:36,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:36,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:36,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:36,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:36,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:36,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:36,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:36,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:36,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:36,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:36,184 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 38 [2021-11-12 23:03:36,185 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:36,187 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-12 23:03:36,188 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:36,189 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-12 23:03:36,189 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 23:03:36,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:36,194 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:36,196 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:36,198 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-11-12 23:03:36,198 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:03:36,199 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:160, output treesize:122 [2021-11-12 23:03:36,204 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:36,207 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 133 [2021-11-12 23:03:36,211 INFO L180 QuantifierPusher]: treesize reduction 8, result has 95.1 percent of original size [2021-11-12 23:03:36,213 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:03:36,213 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:36,214 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-12 23:03:36,217 INFO L185 QuantifierPusher]: treesize reduction 3, result has 97.9 percent of original size 138 [2021-11-12 23:03:36,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:36,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:36,231 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 [2021-11-12 23:03:36,231 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:36,233 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 23:03:36,233 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:36,234 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 23:03:36,234 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:03:36,235 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:36,240 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:36,242 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-11-12 23:03:36,244 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 132 [2021-11-12 23:03:36,245 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:03:36,245 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:139, output treesize:132 [2021-11-12 23:03:36,248 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:36,251 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 140 [2021-11-12 23:03:36,255 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:36,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:36,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:36,321 INFO L180 QuantifierPusher]: treesize reduction 8, result has 97.8 percent of original size [2021-11-12 23:03:36,331 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:03:36,335 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:36,336 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:03:36,337 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:36,337 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-12 23:03:36,338 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:03:36,339 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:36,339 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 23:03:36,343 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 322 [2021-11-12 23:03:36,344 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:03:36,347 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:36,351 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 298 [2021-11-12 23:03:36,355 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 373 [2021-11-12 23:03:36,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:36,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:36,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:36,388 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 45 treesize of output 50 [2021-11-12 23:03:36,389 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:36,390 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-12 23:03:36,391 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:36,392 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-12 23:03:36,392 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:03:36,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:36,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:03:36,412 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 38 treesize of output 40 [2021-11-12 23:03:36,413 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:36,414 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-12 23:03:36,415 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:36,415 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-12 23:03:36,416 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 23:03:36,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:36,446 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:36,458 INFO L180 QuantifierPusher]: treesize reduction 128, result has 71.9 percent of original size [2021-11-12 23:03:36,462 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 328 [2021-11-12 23:03:36,466 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-12 23:03:36,466 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:464, output treesize:328 [2021-11-12 23:03:36,472 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:36,484 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 334 [2021-11-12 23:03:36,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:36,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:36,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:36,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:36,530 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:36,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:36,539 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:36,547 INFO L180 QuantifierPusher]: treesize reduction 50, result has 59.0 percent of original size [2021-11-12 23:03:36,548 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:03:36,549 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:36,550 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 23:03:36,551 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-11-12 23:03:36,560 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-11-12 23:03:36,561 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:36,561 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:03:36,562 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:36,562 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:03:36,563 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:03:36,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:36,565 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:36,566 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:36,567 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-11-12 23:03:36,568 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:03:36,568 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:69, output treesize:65 [2021-11-12 23:03:36,570 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:36,577 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-11-12 23:03:36,586 INFO L180 QuantifierPusher]: treesize reduction 42, result has 70.6 percent of original size [2021-11-12 23:03:36,589 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 106 [2021-11-12 23:03:36,593 INFO L180 QuantifierPusher]: treesize reduction 7, result has 95.0 percent of original size [2021-11-12 23:03:36,597 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-11-12 23:03:36,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:36,615 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:36,616 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:36,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:36,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:36,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:36,633 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:36,637 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 146 [2021-11-12 23:03:36,641 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:36,646 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 163 [2021-11-12 23:03:36,651 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:36,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:36,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:36,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:36,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:36,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:36,673 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:36,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:36,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:36,694 INFO L180 QuantifierPusher]: treesize reduction 42, result has 64.4 percent of original size [2021-11-12 23:03:36,696 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-11-12 23:03:36,698 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:36,703 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-11-12 23:03:36,714 INFO L180 QuantifierPusher]: treesize reduction 42, result has 64.4 percent of original size [2021-11-12 23:03:36,716 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-11-12 23:03:36,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:36,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:36,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:36,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:36,762 INFO L180 QuantifierPusher]: treesize reduction 50, result has 59.0 percent of original size [2021-11-12 23:03:36,764 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:03:36,765 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:36,765 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 23:03:36,766 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-11-12 23:03:36,773 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-11-12 23:03:36,773 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:36,773 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:03:36,774 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:36,774 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:03:36,774 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:03:36,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:36,776 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:36,777 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:03:36,777 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-11-12 23:03:36,778 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:03:36,778 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:69, output treesize:65 [2021-11-12 23:03:36,778 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:36,783 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:36,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:36,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:03:36,823 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 23:03:38,575 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 23:03:38,575 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 23:03:38,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 14] total 34 [2021-11-12 23:03:38,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335562545] [2021-11-12 23:03:38,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 23:03:38,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-11-12 23:03:38,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:03:38,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-11-12 23:03:38,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=1505, Unknown=9, NotChecked=0, Total=1722 [2021-11-12 23:03:38,577 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand has 35 states, 35 states have (on average 1.9714285714285715) internal successors, (69), 34 states have internal predecessors, (69), 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) [2021-11-12 23:03:47,207 WARN L227 SmtUtils]: Spent 8.25s on a formula simplification. DAG size of input: 58 DAG size of output: 57 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-12 23:03:56,983 WARN L227 SmtUtils]: Spent 8.64s on a formula simplification. DAG size of input: 61 DAG size of output: 59 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-12 23:03:57,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:03:57,938 INFO L93 Difference]: Finished difference Result 67 states and 76 transitions. [2021-11-12 23:03:57,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-12 23:03:57,938 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.9714285714285715) internal successors, (69), 34 states have internal predecessors, (69), 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 26 [2021-11-12 23:03:57,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:03:57,939 INFO L225 Difference]: With dead ends: 67 [2021-11-12 23:03:57,939 INFO L226 Difference]: Without dead ends: 53 [2021-11-12 23:03:57,941 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 913 ImplicationChecksByTransitivity, 34.7s TimeCoverageRelationStatistics Valid=413, Invalid=3000, Unknown=9, NotChecked=0, Total=3422 [2021-11-12 23:03:57,942 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 14 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 69.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.15ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 70 IncrementalHoareTripleChecker+Unchecked, 88.49ms IncrementalHoareTripleChecker+Time [2021-11-12 23:03:57,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 65 Invalid, 194 Unknown, 0 Unchecked, 1.15ms Time], IncrementalHoareTripleChecker [6 Valid, 118 Invalid, 0 Unknown, 70 Unchecked, 88.49ms Time] [2021-11-12 23:03:57,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-11-12 23:03:57,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 44. [2021-11-12 23:03:57,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.186046511627907) internal successors, (51), 43 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) [2021-11-12 23:03:57,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2021-11-12 23:03:57,951 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 26 [2021-11-12 23:03:57,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:03:57,952 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2021-11-12 23:03:57,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.9714285714285715) internal successors, (69), 34 states have internal predecessors, (69), 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) [2021-11-12 23:03:57,952 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2021-11-12 23:03:57,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-12 23:03:57,954 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:03:57,954 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 4, 3, 3, 1, 1, 1, 1, 1] [2021-11-12 23:03:57,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-12 23:03:58,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable315 [2021-11-12 23:03:58,161 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:03:58,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:03:58,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1588185699, now seen corresponding path program 7 times [2021-11-12 23:03:58,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:03:58,162 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474312395] [2021-11-12 23:03:58,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:03:58,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:03:58,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:03:58,466 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:03:58,466 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:03:58,466 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474312395] [2021-11-12 23:03:58,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474312395] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 23:03:58,467 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281021607] [2021-11-12 23:03:58,467 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-12 23:03:58,467 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:03:58,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:03:58,468 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:03:58,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-12 23:03:58,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:03:58,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-12 23:03:58,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:03:58,685 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2021-11-12 23:03:58,754 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 35 [2021-11-12 23:03:58,769 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-11-12 23:03:58,769 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 57 [2021-11-12 23:03:58,826 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-11-12 23:03:58,826 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-11-12 23:03:58,972 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2021-11-12 23:03:59,011 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 2 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:03:59,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:04:00,292 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 39 [2021-11-12 23:04:00,295 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 396 treesize of output 388 [2021-11-12 23:04:00,874 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:04:00,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281021607] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:04:00,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1991118042] [2021-11-12 23:04:00,876 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-12 23:04:00,877 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 23:04:00,877 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 23:04:00,878 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 23:04:00,878 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 23:04:00,883 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:00,884 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:04:00,885 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:00,885 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:04:00,886 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:04:00,887 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:00,887 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-11-12 23:04:00,889 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 163 [2021-11-12 23:04:00,894 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_24|], 36=[|v_#valid_39|]} [2021-11-12 23:04:00,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:00,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:00,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:00,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:00,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:00,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:00,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:00,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:00,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:00,919 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 16 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 23 [2021-11-12 23:04:00,921 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:00,921 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-12 23:04:00,922 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:00,922 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-12 23:04:00,923 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:04:00,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:00,926 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:00,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:00,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:00,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:00,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:00,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:00,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:00,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:00,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:00,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:00,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:00,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:00,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:00,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:00,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:00,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:00,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:00,952 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 38 [2021-11-12 23:04:00,953 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:00,956 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-12 23:04:00,956 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:00,957 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-12 23:04:00,957 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 23:04:00,957 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:00,960 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:00,961 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:00,962 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-11-12 23:04:00,963 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:04:00,963 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:160, output treesize:122 [2021-11-12 23:04:00,966 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:00,968 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 133 [2021-11-12 23:04:00,971 INFO L180 QuantifierPusher]: treesize reduction 8, result has 95.1 percent of original size [2021-11-12 23:04:00,972 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:04:00,973 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:00,973 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 23:04:00,975 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 160 [2021-11-12 23:04:00,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:00,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:00,991 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 38 treesize of output 40 [2021-11-12 23:04:01,001 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:01,003 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-12 23:04:01,003 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:01,004 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-12 23:04:01,004 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:04:01,005 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:01,008 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:01,009 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:01,012 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 154 [2021-11-12 23:04:01,012 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:04:01,013 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:158, output treesize:154 [2021-11-12 23:04:01,015 INFO L180 QuantifierPusher]: treesize reduction 11, result has 93.5 percent of original size [2021-11-12 23:04:01,019 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 151 [2021-11-12 23:04:01,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:01,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:01,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:01,078 INFO L180 QuantifierPusher]: treesize reduction 8, result has 97.9 percent of original size [2021-11-12 23:04:01,089 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:04:01,093 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:01,094 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:04:01,095 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:01,095 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 23:04:01,096 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:04:01,097 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:01,098 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-11-12 23:04:01,102 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 337 [2021-11-12 23:04:01,103 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:04:01,106 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:01,110 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 313 [2021-11-12 23:04:01,115 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 388 [2021-11-12 23:04:01,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:01,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:01,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:01,148 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 58 treesize of output 63 [2021-11-12 23:04:01,149 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:01,151 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-12 23:04:01,151 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:01,152 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-12 23:04:01,153 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:04:01,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:01,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:01,173 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 38 treesize of output 40 [2021-11-12 23:04:01,173 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:01,175 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-12 23:04:01,175 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:01,176 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-12 23:04:01,177 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 23:04:01,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:01,206 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:01,218 INFO L180 QuantifierPusher]: treesize reduction 117, result has 75.0 percent of original size [2021-11-12 23:04:01,223 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 351 [2021-11-12 23:04:01,224 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-12 23:04:01,224 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:479, output treesize:351 [2021-11-12 23:04:01,229 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:01,236 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 357 [2021-11-12 23:04:01,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:01,282 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:01,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:01,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:01,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:01,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:01,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:01,305 INFO L180 QuantifierPusher]: treesize reduction 50, result has 59.0 percent of original size [2021-11-12 23:04:01,307 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:04:01,307 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:01,308 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 23:04:01,309 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-11-12 23:04:01,316 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-11-12 23:04:01,316 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:01,317 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:04:01,317 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:01,321 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:04:01,321 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:04:01,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:01,327 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:01,328 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:01,329 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-11-12 23:04:01,330 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:04:01,330 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:69, output treesize:65 [2021-11-12 23:04:01,332 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:01,334 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-11-12 23:04:01,346 INFO L180 QuantifierPusher]: treesize reduction 42, result has 70.6 percent of original size [2021-11-12 23:04:01,349 INFO L185 QuantifierPusher]: treesize reduction 3, result has 96.9 percent of original size 93 [2021-11-12 23:04:01,352 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.7 percent of original size [2021-11-12 23:04:01,356 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-11-12 23:04:01,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:01,370 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:01,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:01,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:01,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:01,384 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:01,393 INFO L180 QuantifierPusher]: treesize reduction 42, result has 64.4 percent of original size [2021-11-12 23:04:01,395 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-11-12 23:04:01,397 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:01,401 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-11-12 23:04:01,414 INFO L180 QuantifierPusher]: treesize reduction 42, result has 64.4 percent of original size [2021-11-12 23:04:01,416 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-11-12 23:04:01,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:01,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:01,434 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:01,443 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:01,461 INFO L180 QuantifierPusher]: treesize reduction 50, result has 59.0 percent of original size [2021-11-12 23:04:01,463 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:04:01,463 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:01,464 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 23:04:01,465 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-11-12 23:04:01,471 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-11-12 23:04:01,472 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:01,473 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:04:01,473 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:01,474 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:04:01,474 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:04:01,475 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:01,476 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:01,478 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:01,479 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-11-12 23:04:01,479 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:04:01,480 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:69, output treesize:65 [2021-11-12 23:04:01,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:01,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:01,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:01,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:01,546 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 23:04:03,295 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 23:04:03,295 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 23:04:03,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 32 [2021-11-12 23:04:03,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007039369] [2021-11-12 23:04:03,296 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 23:04:03,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-11-12 23:04:03,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:04:03,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-11-12 23:04:03,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=1431, Unknown=1, NotChecked=0, Total=1560 [2021-11-12 23:04:03,298 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand has 33 states, 33 states have (on average 2.212121212121212) internal successors, (73), 32 states have internal predecessors, (73), 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) [2021-11-12 23:04:03,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:04:03,842 INFO L93 Difference]: Finished difference Result 59 states and 66 transitions. [2021-11-12 23:04:03,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-12 23:04:03,843 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.212121212121212) internal successors, (73), 32 states have internal predecessors, (73), 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 30 [2021-11-12 23:04:03,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:04:03,844 INFO L225 Difference]: With dead ends: 59 [2021-11-12 23:04:03,844 INFO L226 Difference]: Without dead ends: 57 [2021-11-12 23:04:03,846 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 64 SyntacticMatches, 4 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 526 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=260, Invalid=2189, Unknown=1, NotChecked=0, Total=2450 [2021-11-12 23:04:03,847 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 72 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 246.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.90ms SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 11 IncrementalHoareTripleChecker+Unchecked, 294.81ms IncrementalHoareTripleChecker+Time [2021-11-12 23:04:03,847 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 99 Invalid, 494 Unknown, 0 Unchecked, 2.90ms Time], IncrementalHoareTripleChecker [49 Valid, 434 Invalid, 0 Unknown, 11 Unchecked, 294.81ms Time] [2021-11-12 23:04:03,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-11-12 23:04:03,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 43. [2021-11-12 23:04:03,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.1904761904761905) internal successors, (50), 42 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:04:03,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2021-11-12 23:04:03,857 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 30 [2021-11-12 23:04:03,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:04:03,858 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2021-11-12 23:04:03,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.212121212121212) internal successors, (73), 32 states have internal predecessors, (73), 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) [2021-11-12 23:04:03,858 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2021-11-12 23:04:03,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-12 23:04:03,860 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:04:03,860 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 5, 4, 4, 1, 1, 1, 1, 1] [2021-11-12 23:04:03,908 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-12 23:04:04,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable355 [2021-11-12 23:04:04,075 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:04:04,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:04:04,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1189394262, now seen corresponding path program 8 times [2021-11-12 23:04:04,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:04:04,076 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228087543] [2021-11-12 23:04:04,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:04:04,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:04:04,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:04:04,430 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 9 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:04:04,431 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:04:04,431 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228087543] [2021-11-12 23:04:04,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228087543] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 23:04:04,431 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [662080523] [2021-11-12 23:04:04,431 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-12 23:04:04,431 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:04:04,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:04:04,437 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:04:04,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-12 23:04:04,517 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-11-12 23:04:04,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:04:04,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-12 23:04:04,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:04:04,699 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 27 treesize of output 23 [2021-11-12 23:04:05,303 INFO L354 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2021-11-12 23:04:05,303 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 39 [2021-11-12 23:04:05,348 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 22 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:04:05,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:04:05,820 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 25 [2021-11-12 23:04:05,823 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 40 [2021-11-12 23:04:06,332 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 18 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:04:06,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [662080523] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:04:06,332 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [614227320] [2021-11-12 23:04:06,334 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-12 23:04:06,334 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 23:04:06,335 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 23:04:06,335 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 23:04:06,335 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 23:04:06,338 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:06,339 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:04:06,339 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:06,339 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:04:06,340 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:04:06,340 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:06,341 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-11-12 23:04:06,342 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 163 [2021-11-12 23:04:06,344 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_25|], 36=[|v_#valid_40|]} [2021-11-12 23:04:06,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:06,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:06,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:06,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:06,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:06,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:06,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:06,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:06,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:06,363 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 16 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 23 [2021-11-12 23:04:06,363 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:06,364 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-12 23:04:06,364 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:06,365 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-12 23:04:06,365 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:04:06,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:06,368 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:06,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:06,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:06,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:06,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:06,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:06,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:06,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:06,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:06,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:06,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:06,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:06,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:06,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:06,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:06,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:06,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:06,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 38 [2021-11-12 23:04:06,408 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:06,414 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-12 23:04:06,414 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:06,415 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-12 23:04:06,415 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 23:04:06,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:06,420 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:06,422 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:06,424 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-11-12 23:04:06,425 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:04:06,425 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:160, output treesize:122 [2021-11-12 23:04:06,430 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:06,433 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 133 [2021-11-12 23:04:06,438 INFO L180 QuantifierPusher]: treesize reduction 8, result has 95.1 percent of original size [2021-11-12 23:04:06,440 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:04:06,441 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:06,441 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-12 23:04:06,444 INFO L185 QuantifierPusher]: treesize reduction 3, result has 97.9 percent of original size 138 [2021-11-12 23:04:06,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:06,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:06,460 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 [2021-11-12 23:04:06,461 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:06,462 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 23:04:06,463 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:06,463 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 23:04:06,464 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:04:06,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:06,469 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:06,471 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-11-12 23:04:06,474 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 132 [2021-11-12 23:04:06,474 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:04:06,475 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:139, output treesize:132 [2021-11-12 23:04:06,477 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:06,481 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 140 [2021-11-12 23:04:06,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:06,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:06,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:06,542 INFO L180 QuantifierPusher]: treesize reduction 8, result has 97.8 percent of original size [2021-11-12 23:04:06,562 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:04:06,565 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:06,566 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:04:06,567 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:06,568 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 23:04:06,569 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:04:06,569 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:06,570 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-12 23:04:06,574 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 322 [2021-11-12 23:04:06,575 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:04:06,578 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:06,582 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 298 [2021-11-12 23:04:06,586 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 373 [2021-11-12 23:04:06,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:06,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:06,610 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 38 treesize of output 40 [2021-11-12 23:04:06,611 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:06,612 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-12 23:04:06,613 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:06,613 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-12 23:04:06,614 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:04:06,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:06,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:06,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:06,633 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 45 treesize of output 50 [2021-11-12 23:04:06,634 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:06,635 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-12 23:04:06,636 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:06,637 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-12 23:04:06,637 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 23:04:06,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:06,667 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:06,680 INFO L180 QuantifierPusher]: treesize reduction 128, result has 71.9 percent of original size [2021-11-12 23:04:06,684 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 328 [2021-11-12 23:04:06,686 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-12 23:04:06,686 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:464, output treesize:328 [2021-11-12 23:04:06,691 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:06,697 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 334 [2021-11-12 23:04:06,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:06,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:06,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:06,741 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:06,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:06,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:06,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:06,754 INFO L180 QuantifierPusher]: treesize reduction 50, result has 59.0 percent of original size [2021-11-12 23:04:06,755 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:04:06,756 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:06,756 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 23:04:06,757 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-11-12 23:04:06,764 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-11-12 23:04:06,764 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:06,765 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:04:06,765 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:06,766 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:04:06,766 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:04:06,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:06,768 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:06,769 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:06,770 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-11-12 23:04:06,771 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:04:06,771 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:69, output treesize:65 [2021-11-12 23:04:06,773 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:06,775 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-11-12 23:04:06,787 INFO L180 QuantifierPusher]: treesize reduction 42, result has 70.6 percent of original size [2021-11-12 23:04:06,790 INFO L185 QuantifierPusher]: treesize reduction 3, result has 96.9 percent of original size 93 [2021-11-12 23:04:06,796 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.7 percent of original size [2021-11-12 23:04:06,800 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-11-12 23:04:06,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:06,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:06,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:06,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:06,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:06,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:06,834 INFO L180 QuantifierPusher]: treesize reduction 42, result has 64.4 percent of original size [2021-11-12 23:04:06,835 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-11-12 23:04:06,838 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:06,842 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-11-12 23:04:06,853 INFO L180 QuantifierPusher]: treesize reduction 42, result has 64.4 percent of original size [2021-11-12 23:04:06,855 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-11-12 23:04:06,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:06,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:06,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:06,881 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:06,899 INFO L180 QuantifierPusher]: treesize reduction 50, result has 59.0 percent of original size [2021-11-12 23:04:06,901 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:04:06,901 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:06,902 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 23:04:06,903 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-11-12 23:04:06,909 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-11-12 23:04:06,909 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:06,910 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:04:06,910 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:06,911 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:04:06,911 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:04:06,912 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:06,913 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:06,915 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:06,915 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-11-12 23:04:06,916 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:04:06,916 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:69, output treesize:65 [2021-11-12 23:04:06,917 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:06,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:06,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:06,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:06,954 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 23:04:08,656 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 23:04:08,657 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 23:04:08,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 38 [2021-11-12 23:04:08,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932796839] [2021-11-12 23:04:08,657 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 23:04:08,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-11-12 23:04:08,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:04:08,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-11-12 23:04:08,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=269, Invalid=1801, Unknown=0, NotChecked=0, Total=2070 [2021-11-12 23:04:08,660 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand has 39 states, 39 states have (on average 2.282051282051282) internal successors, (89), 38 states have internal predecessors, (89), 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) [2021-11-12 23:04:08,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:04:08,884 INFO L93 Difference]: Finished difference Result 60 states and 67 transitions. [2021-11-12 23:04:08,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 23:04:08,885 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.282051282051282) internal successors, (89), 38 states have internal predecessors, (89), 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 31 [2021-11-12 23:04:08,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:04:08,886 INFO L225 Difference]: With dead ends: 60 [2021-11-12 23:04:08,886 INFO L226 Difference]: Without dead ends: 43 [2021-11-12 23:04:08,887 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 688 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=295, Invalid=1961, Unknown=0, NotChecked=0, Total=2256 [2021-11-12 23:04:08,888 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 3 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 116.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.40ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 53 IncrementalHoareTripleChecker+Unchecked, 137.09ms IncrementalHoareTripleChecker+Time [2021-11-12 23:04:08,889 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 107 Invalid, 229 Unknown, 0 Unchecked, 1.40ms Time], IncrementalHoareTripleChecker [6 Valid, 170 Invalid, 0 Unknown, 53 Unchecked, 137.09ms Time] [2021-11-12 23:04:08,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-11-12 23:04:08,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-11-12 23:04:08,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.1666666666666667) internal successors, (49), 42 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:04:08,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2021-11-12 23:04:08,899 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 31 [2021-11-12 23:04:08,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:04:08,899 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2021-11-12 23:04:08,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.282051282051282) internal successors, (89), 38 states have internal predecessors, (89), 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) [2021-11-12 23:04:08,900 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2021-11-12 23:04:08,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:04:08,901 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:04:08,901 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 5, 4, 4, 1, 1, 1, 1, 1] [2021-11-12 23:04:08,934 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-12 23:04:09,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable386 [2021-11-12 23:04:09,121 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:04:09,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:04:09,121 INFO L85 PathProgramCache]: Analyzing trace with hash 285549329, now seen corresponding path program 9 times [2021-11-12 23:04:09,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:04:09,121 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640791070] [2021-11-12 23:04:09,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:04:09,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:04:09,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:04:09,502 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:04:09,503 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:04:09,503 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640791070] [2021-11-12 23:04:09,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640791070] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 23:04:09,503 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173315303] [2021-11-12 23:04:09,503 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-12 23:04:09,503 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:04:09,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:04:09,509 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:04:09,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-12 23:04:09,638 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-12 23:04:09,639 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:04:09,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 42 conjunts are in the unsatisfiable core [2021-11-12 23:04:09,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:04:09,776 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 19 treesize of output 15 [2021-11-12 23:04:09,841 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-11-12 23:04:09,842 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 34 [2021-11-12 23:04:09,936 INFO L354 Elim1Store]: treesize reduction 64, result has 22.9 percent of original size [2021-11-12 23:04:09,936 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 38 [2021-11-12 23:04:10,043 INFO L354 Elim1Store]: treesize reduction 114, result has 19.7 percent of original size [2021-11-12 23:04:10,044 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 47 [2021-11-12 23:04:10,745 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-11-12 23:04:10,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 71 treesize of output 35 [2021-11-12 23:04:10,801 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:04:10,801 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:04:11,838 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 88 [2021-11-12 23:04:11,854 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-12 23:04:11,854 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 10166 treesize of output 10070 [2021-11-12 23:04:19,677 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-12 23:04:19,677 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1607795022] [2021-11-12 23:04:19,680 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-12 23:04:19,680 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 23:04:19,680 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 23:04:19,681 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 23:04:19,681 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 23:04:19,687 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:19,687 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:04:19,688 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:19,688 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-11-12 23:04:19,688 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:04:19,689 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:19,689 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:04:19,690 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 163 [2021-11-12 23:04:19,703 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_26|], 36=[|v_#valid_41|]} [2021-11-12 23:04:19,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:19,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:19,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:19,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:19,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:19,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:19,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:19,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:19,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:19,721 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 16 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 23 [2021-11-12 23:04:19,722 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:19,722 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-12 23:04:19,723 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:19,723 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-12 23:04:19,723 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:04:19,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:19,727 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:19,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:19,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:19,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:19,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:19,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:19,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:19,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:19,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:19,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:19,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:19,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:19,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:19,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:19,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:19,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:19,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:19,770 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 38 [2021-11-12 23:04:19,770 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:19,774 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-12 23:04:19,774 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:19,775 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-12 23:04:19,775 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 23:04:19,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:19,780 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:19,782 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:19,784 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-11-12 23:04:19,785 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:04:19,785 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:160, output treesize:122 [2021-11-12 23:04:19,791 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:19,794 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 133 [2021-11-12 23:04:19,798 INFO L180 QuantifierPusher]: treesize reduction 8, result has 95.1 percent of original size [2021-11-12 23:04:19,800 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:04:19,800 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:19,801 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-12 23:04:19,804 INFO L185 QuantifierPusher]: treesize reduction 3, result has 97.9 percent of original size 138 [2021-11-12 23:04:19,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:19,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:19,818 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 [2021-11-12 23:04:19,818 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:19,820 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 23:04:19,820 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:19,821 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 23:04:19,821 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:04:19,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:19,827 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:19,830 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-11-12 23:04:19,832 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 132 [2021-11-12 23:04:19,832 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:04:19,833 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:139, output treesize:132 [2021-11-12 23:04:19,835 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:19,839 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 140 [2021-11-12 23:04:19,843 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:19,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:19,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:19,900 INFO L180 QuantifierPusher]: treesize reduction 8, result has 97.8 percent of original size [2021-11-12 23:04:19,909 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:04:19,913 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:19,914 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:04:19,915 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:19,916 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-11-12 23:04:19,917 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:04:19,917 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:19,918 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 23:04:19,922 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 327 [2021-11-12 23:04:19,923 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:04:19,926 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:19,930 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 303 [2021-11-12 23:04:19,934 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 378 [2021-11-12 23:04:19,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:19,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:19,965 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 38 treesize of output 40 [2021-11-12 23:04:19,971 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:19,972 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-12 23:04:19,973 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:19,973 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-12 23:04:19,974 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:04:19,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:19,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:19,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:19,995 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 50 treesize of output 55 [2021-11-12 23:04:19,995 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:19,997 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-11-12 23:04:19,998 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:19,999 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-11-12 23:04:19,999 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 23:04:20,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:20,029 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:20,041 INFO L180 QuantifierPusher]: treesize reduction 129, result has 72.0 percent of original size [2021-11-12 23:04:20,045 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 332 [2021-11-12 23:04:20,046 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-12 23:04:20,047 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:469, output treesize:332 [2021-11-12 23:04:20,052 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:20,058 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 338 [2021-11-12 23:04:20,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:20,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:20,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:20,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:20,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:20,114 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:20,118 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:20,125 INFO L180 QuantifierPusher]: treesize reduction 50, result has 59.0 percent of original size [2021-11-12 23:04:20,127 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:04:20,127 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:20,128 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 23:04:20,129 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-11-12 23:04:20,135 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-11-12 23:04:20,136 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:20,137 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:04:20,137 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:20,138 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:04:20,138 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:04:20,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:20,140 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:20,141 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:20,142 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-11-12 23:04:20,142 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:04:20,143 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:69, output treesize:65 [2021-11-12 23:04:20,144 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:20,147 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-11-12 23:04:20,161 INFO L180 QuantifierPusher]: treesize reduction 42, result has 70.6 percent of original size [2021-11-12 23:04:20,164 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 106 [2021-11-12 23:04:20,167 INFO L180 QuantifierPusher]: treesize reduction 7, result has 95.0 percent of original size [2021-11-12 23:04:20,171 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-11-12 23:04:20,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:20,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:20,187 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:20,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:20,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:20,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:20,202 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:20,205 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 146 [2021-11-12 23:04:20,209 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:20,214 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 163 [2021-11-12 23:04:20,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:20,237 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:20,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:20,242 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:20,243 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:20,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:20,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:20,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:20,250 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:20,258 INFO L180 QuantifierPusher]: treesize reduction 42, result has 64.4 percent of original size [2021-11-12 23:04:20,260 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-11-12 23:04:20,263 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:20,267 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-11-12 23:04:20,277 INFO L180 QuantifierPusher]: treesize reduction 42, result has 64.4 percent of original size [2021-11-12 23:04:20,279 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-11-12 23:04:20,280 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:20,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:20,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:20,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:20,323 INFO L180 QuantifierPusher]: treesize reduction 50, result has 59.0 percent of original size [2021-11-12 23:04:20,325 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:04:20,325 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:20,326 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 23:04:20,327 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-11-12 23:04:20,346 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-11-12 23:04:20,347 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:20,347 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:04:20,348 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:20,348 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:04:20,349 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:04:20,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:20,351 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:20,352 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:20,353 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-11-12 23:04:20,353 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:04:20,354 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:69, output treesize:65 [2021-11-12 23:04:20,354 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:20,361 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:20,370 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:20,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:20,395 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 23:04:22,308 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 23:04:22,308 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:04:22,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-11-12 23:04:22,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402664079] [2021-11-12 23:04:22,309 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-12 23:04:22,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-12 23:04:22,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:04:22,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-12 23:04:22,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=2234, Unknown=0, NotChecked=0, Total=2450 [2021-11-12 23:04:22,310 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand has 16 states, 16 states have (on average 2.0625) internal successors, (33), 15 states have internal predecessors, (33), 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) [2021-11-12 23:04:22,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:04:22,877 INFO L93 Difference]: Finished difference Result 66 states and 72 transitions. [2021-11-12 23:04:22,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-12 23:04:22,877 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.0625) internal successors, (33), 15 states have internal predecessors, (33), 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 33 [2021-11-12 23:04:22,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:04:22,878 INFO L225 Difference]: With dead ends: 66 [2021-11-12 23:04:22,879 INFO L226 Difference]: Without dead ends: 64 [2021-11-12 23:04:22,881 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 716 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=291, Invalid=3249, Unknown=0, NotChecked=0, Total=3540 [2021-11-12 23:04:22,882 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 13 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 194.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.09ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 238.65ms IncrementalHoareTripleChecker+Time [2021-11-12 23:04:22,882 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 131 Invalid, 388 Unknown, 0 Unchecked, 2.09ms Time], IncrementalHoareTripleChecker [15 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 238.65ms Time] [2021-11-12 23:04:22,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-11-12 23:04:22,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 47. [2021-11-12 23:04:22,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.1521739130434783) internal successors, (53), 46 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:04:22,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2021-11-12 23:04:22,893 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 33 [2021-11-12 23:04:22,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:04:22,893 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2021-11-12 23:04:22,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.0625) internal successors, (33), 15 states have internal predecessors, (33), 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) [2021-11-12 23:04:22,894 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2021-11-12 23:04:22,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-12 23:04:22,895 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:04:22,895 INFO L514 BasicCegarLoop]: trace histogram [9, 8, 5, 4, 4, 1, 1, 1, 1, 1] [2021-11-12 23:04:22,940 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-11-12 23:04:23,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable417,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:04:23,121 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:04:23,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:04:23,121 INFO L85 PathProgramCache]: Analyzing trace with hash 367132600, now seen corresponding path program 10 times [2021-11-12 23:04:23,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:04:23,121 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462542547] [2021-11-12 23:04:23,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:04:23,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:04:23,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:04:23,463 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:04:23,463 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:04:23,463 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462542547] [2021-11-12 23:04:23,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462542547] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 23:04:23,464 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526724124] [2021-11-12 23:04:23,464 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-12 23:04:23,464 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:04:23,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:04:23,473 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:04:23,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-12 23:04:23,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:04:23,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 37 conjunts are in the unsatisfiable core [2021-11-12 23:04:23,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:04:23,671 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2021-11-12 23:04:23,737 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 35 [2021-11-12 23:04:23,751 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-11-12 23:04:23,751 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 57 [2021-11-12 23:04:23,815 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-11-12 23:04:23,815 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-11-12 23:04:24,024 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2021-11-12 23:04:24,064 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 2 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:04:24,064 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:04:26,112 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 39 [2021-11-12 23:04:26,115 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 396 treesize of output 388 [2021-11-12 23:04:26,825 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:04:26,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1526724124] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:04:26,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1421177579] [2021-11-12 23:04:26,827 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-12 23:04:26,827 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 23:04:26,828 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 23:04:26,828 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 23:04:26,828 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 23:04:26,833 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:26,834 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:04:26,835 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:26,835 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-11-12 23:04:26,836 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:04:26,836 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:26,837 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:04:26,839 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 163 [2021-11-12 23:04:26,842 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_27|], 36=[|v_#valid_42|]} [2021-11-12 23:04:26,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:26,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:26,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:26,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:26,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:26,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:26,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:26,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:26,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:26,868 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 16 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 23 [2021-11-12 23:04:26,868 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:26,869 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-12 23:04:26,870 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:26,870 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-12 23:04:26,871 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:04:26,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:26,875 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:26,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:26,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:26,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:26,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:26,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:26,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:26,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:26,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:26,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:26,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:26,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:26,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:26,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:26,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:26,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:26,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:26,910 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 38 [2021-11-12 23:04:26,910 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:26,914 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-12 23:04:26,915 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:26,915 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-12 23:04:26,916 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 23:04:26,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:26,920 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:26,922 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:26,924 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-11-12 23:04:26,925 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:04:26,925 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:160, output treesize:122 [2021-11-12 23:04:26,930 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:26,933 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 133 [2021-11-12 23:04:26,937 INFO L180 QuantifierPusher]: treesize reduction 8, result has 95.1 percent of original size [2021-11-12 23:04:26,939 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:04:26,940 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:26,940 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 23:04:26,943 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 160 [2021-11-12 23:04:26,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:26,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:26,957 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 38 treesize of output 40 [2021-11-12 23:04:26,958 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:26,960 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-12 23:04:26,960 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:26,961 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-12 23:04:26,961 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:04:26,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:26,967 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:26,969 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:26,984 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 154 [2021-11-12 23:04:26,985 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:04:26,985 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:158, output treesize:154 [2021-11-12 23:04:26,989 INFO L180 QuantifierPusher]: treesize reduction 11, result has 93.5 percent of original size [2021-11-12 23:04:26,993 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 151 [2021-11-12 23:04:26,998 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:27,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:27,030 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:27,068 INFO L180 QuantifierPusher]: treesize reduction 8, result has 97.9 percent of original size [2021-11-12 23:04:27,077 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:04:27,082 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:27,083 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:04:27,084 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:27,085 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 23:04:27,086 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:04:27,087 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:27,087 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-11-12 23:04:27,092 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 337 [2021-11-12 23:04:27,093 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:04:27,097 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:27,101 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 313 [2021-11-12 23:04:27,106 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 388 [2021-11-12 23:04:27,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:27,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:27,134 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 38 treesize of output 40 [2021-11-12 23:04:27,135 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:27,136 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-12 23:04:27,137 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:27,138 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-12 23:04:27,138 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:04:27,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:27,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:27,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:27,160 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 58 treesize of output 63 [2021-11-12 23:04:27,161 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:27,163 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-11-12 23:04:27,164 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:27,165 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-11-12 23:04:27,165 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 23:04:27,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:27,201 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:27,216 INFO L180 QuantifierPusher]: treesize reduction 120, result has 74.5 percent of original size [2021-11-12 23:04:27,222 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 351 [2021-11-12 23:04:27,223 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-12 23:04:27,223 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:479, output treesize:351 [2021-11-12 23:04:27,230 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:27,237 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 357 [2021-11-12 23:04:27,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:27,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:27,282 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:27,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:27,284 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:27,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:27,290 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:27,296 INFO L180 QuantifierPusher]: treesize reduction 50, result has 59.0 percent of original size [2021-11-12 23:04:27,298 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:04:27,298 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:27,299 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 23:04:27,300 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-11-12 23:04:27,306 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-11-12 23:04:27,307 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:27,307 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:04:27,308 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:27,308 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:04:27,309 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:04:27,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:27,311 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:27,312 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:27,313 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-11-12 23:04:27,313 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:04:27,314 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:69, output treesize:65 [2021-11-12 23:04:27,315 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:27,317 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-11-12 23:04:27,328 INFO L180 QuantifierPusher]: treesize reduction 42, result has 70.6 percent of original size [2021-11-12 23:04:27,331 INFO L185 QuantifierPusher]: treesize reduction 3, result has 96.9 percent of original size 93 [2021-11-12 23:04:27,334 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.7 percent of original size [2021-11-12 23:04:27,337 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-11-12 23:04:27,341 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:27,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:27,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:27,354 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:27,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:27,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:27,367 INFO L180 QuantifierPusher]: treesize reduction 42, result has 64.4 percent of original size [2021-11-12 23:04:27,369 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-11-12 23:04:27,371 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:27,375 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-11-12 23:04:27,386 INFO L180 QuantifierPusher]: treesize reduction 42, result has 64.4 percent of original size [2021-11-12 23:04:27,387 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-11-12 23:04:27,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:27,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:27,406 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:27,414 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:27,433 INFO L180 QuantifierPusher]: treesize reduction 50, result has 59.0 percent of original size [2021-11-12 23:04:27,434 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:04:27,435 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:27,435 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 23:04:27,437 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-11-12 23:04:27,443 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-11-12 23:04:27,443 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:27,447 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:04:27,448 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:27,448 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:04:27,449 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:04:27,449 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:27,450 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:27,451 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:27,452 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-11-12 23:04:27,452 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:04:27,452 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:69, output treesize:65 [2021-11-12 23:04:27,454 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:27,458 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:27,463 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:27,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:27,479 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 23:04:29,224 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 23:04:29,225 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 23:04:29,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 37 [2021-11-12 23:04:29,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197965152] [2021-11-12 23:04:29,225 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 23:04:29,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-11-12 23:04:29,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:04:29,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-11-12 23:04:29,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=1834, Unknown=2, NotChecked=0, Total=1980 [2021-11-12 23:04:29,228 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand has 38 states, 38 states have (on average 2.263157894736842) internal successors, (86), 37 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:04:29,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:04:29,961 INFO L93 Difference]: Finished difference Result 65 states and 71 transitions. [2021-11-12 23:04:29,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-12 23:04:29,962 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.263157894736842) internal successors, (86), 37 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-11-12 23:04:29,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:04:29,963 INFO L225 Difference]: With dead ends: 65 [2021-11-12 23:04:29,963 INFO L226 Difference]: Without dead ends: 63 [2021-11-12 23:04:29,965 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 72 SyntacticMatches, 4 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 666 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=303, Invalid=2887, Unknown=2, NotChecked=0, Total=3192 [2021-11-12 23:04:29,966 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 31 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 309.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.21ms SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 13 IncrementalHoareTripleChecker+Unchecked, 380.01ms IncrementalHoareTripleChecker+Time [2021-11-12 23:04:29,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 133 Invalid, 646 Unknown, 0 Unchecked, 3.21ms Time], IncrementalHoareTripleChecker [39 Valid, 594 Invalid, 0 Unknown, 13 Unchecked, 380.01ms Time] [2021-11-12 23:04:29,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-11-12 23:04:29,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 46. [2021-11-12 23:04:29,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.1555555555555554) internal successors, (52), 45 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:04:29,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 52 transitions. [2021-11-12 23:04:29,977 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 52 transitions. Word has length 35 [2021-11-12 23:04:29,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:04:29,978 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 52 transitions. [2021-11-12 23:04:29,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.263157894736842) internal successors, (86), 37 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:04:29,978 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 52 transitions. [2021-11-12 23:04:29,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-12 23:04:29,980 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:04:29,980 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 6, 5, 5, 1, 1, 1, 1, 1] [2021-11-12 23:04:30,027 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-12 23:04:30,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable457,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:04:30,203 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:04:30,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:04:30,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1525029981, now seen corresponding path program 11 times [2021-11-12 23:04:30,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:04:30,204 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106695349] [2021-11-12 23:04:30,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:04:30,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:04:30,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:04:30,613 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 18 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:04:30,613 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:04:30,613 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106695349] [2021-11-12 23:04:30,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106695349] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 23:04:30,613 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316467222] [2021-11-12 23:04:30,613 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-12 23:04:30,613 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:04:30,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:04:30,614 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:04:30,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-12 23:04:30,751 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-12 23:04:30,751 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:04:30,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-12 23:04:30,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:04:30,965 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 27 treesize of output 23 [2021-11-12 23:04:31,555 INFO L354 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2021-11-12 23:04:31,555 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 39 [2021-11-12 23:04:31,603 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 35 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:04:31,603 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:04:32,220 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 25 [2021-11-12 23:04:32,224 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 40 [2021-11-12 23:04:32,806 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 30 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:04:32,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [316467222] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:04:32,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1643180500] [2021-11-12 23:04:32,808 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-12 23:04:32,808 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 23:04:32,809 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 23:04:32,809 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 23:04:32,809 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 23:04:32,814 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:32,814 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:04:32,815 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:32,815 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:04:32,815 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:04:32,816 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:32,816 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-11-12 23:04:32,817 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 163 [2021-11-12 23:04:32,819 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_28|], 36=[|v_#valid_43|]} [2021-11-12 23:04:32,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:32,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:32,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:32,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:32,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:32,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:32,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:32,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:32,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:32,843 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 16 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 23 [2021-11-12 23:04:32,844 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:32,844 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-12 23:04:32,844 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:32,845 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-12 23:04:32,845 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:04:32,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:32,848 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:32,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:32,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:32,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:32,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:32,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:32,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:32,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:32,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:32,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:32,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:32,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:32,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:32,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:32,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:32,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:32,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:32,873 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 38 [2021-11-12 23:04:32,877 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:32,879 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-12 23:04:32,880 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:32,880 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-12 23:04:32,880 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 23:04:32,881 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:32,884 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:32,885 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:32,886 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-11-12 23:04:32,886 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:04:32,887 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:160, output treesize:122 [2021-11-12 23:04:32,891 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:32,893 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 133 [2021-11-12 23:04:32,895 INFO L180 QuantifierPusher]: treesize reduction 8, result has 95.1 percent of original size [2021-11-12 23:04:32,896 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:04:32,897 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:32,897 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-12 23:04:32,899 INFO L185 QuantifierPusher]: treesize reduction 3, result has 97.9 percent of original size 138 [2021-11-12 23:04:32,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:32,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:32,925 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 [2021-11-12 23:04:32,925 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:32,927 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 23:04:32,927 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:32,928 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 23:04:32,928 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:04:32,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:32,934 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:32,936 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-11-12 23:04:32,938 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 132 [2021-11-12 23:04:32,939 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:04:32,939 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:139, output treesize:132 [2021-11-12 23:04:32,942 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:32,945 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 140 [2021-11-12 23:04:32,949 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:32,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:32,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:33,010 INFO L180 QuantifierPusher]: treesize reduction 8, result has 97.8 percent of original size [2021-11-12 23:04:33,019 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:04:33,023 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:33,024 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:04:33,025 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:33,025 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 23:04:33,026 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:04:33,027 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:33,028 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-12 23:04:33,032 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 322 [2021-11-12 23:04:33,032 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:04:33,035 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:33,039 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 298 [2021-11-12 23:04:33,043 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 373 [2021-11-12 23:04:33,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:33,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:33,068 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 38 treesize of output 40 [2021-11-12 23:04:33,069 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:33,071 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-12 23:04:33,072 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:33,072 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-12 23:04:33,073 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:04:33,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:33,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:33,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:33,091 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 45 treesize of output 50 [2021-11-12 23:04:33,091 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:33,093 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-12 23:04:33,093 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:33,094 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-12 23:04:33,094 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 23:04:33,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:33,114 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:33,121 INFO L180 QuantifierPusher]: treesize reduction 128, result has 71.9 percent of original size [2021-11-12 23:04:33,123 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 328 [2021-11-12 23:04:33,124 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-12 23:04:33,124 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:464, output treesize:328 [2021-11-12 23:04:33,127 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:33,131 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 334 [2021-11-12 23:04:33,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:33,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:33,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:33,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:33,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:33,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:33,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:33,187 INFO L180 QuantifierPusher]: treesize reduction 50, result has 59.0 percent of original size [2021-11-12 23:04:33,188 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:04:33,189 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:33,189 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 23:04:33,190 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-11-12 23:04:33,196 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-11-12 23:04:33,197 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:33,197 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:04:33,197 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:33,198 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:04:33,198 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:04:33,198 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:33,200 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:33,201 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:33,202 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-11-12 23:04:33,203 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:04:33,203 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:69, output treesize:65 [2021-11-12 23:04:33,205 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:33,207 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-11-12 23:04:33,218 INFO L180 QuantifierPusher]: treesize reduction 42, result has 70.6 percent of original size [2021-11-12 23:04:33,221 INFO L185 QuantifierPusher]: treesize reduction 3, result has 96.9 percent of original size 93 [2021-11-12 23:04:33,224 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.7 percent of original size [2021-11-12 23:04:33,228 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-11-12 23:04:33,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:33,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:33,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:33,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:33,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:33,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:33,259 INFO L180 QuantifierPusher]: treesize reduction 42, result has 64.4 percent of original size [2021-11-12 23:04:33,261 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-11-12 23:04:33,264 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:33,268 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-11-12 23:04:33,278 INFO L180 QuantifierPusher]: treesize reduction 42, result has 64.4 percent of original size [2021-11-12 23:04:33,280 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-11-12 23:04:33,282 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:33,290 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:33,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:33,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:33,327 INFO L180 QuantifierPusher]: treesize reduction 50, result has 59.0 percent of original size [2021-11-12 23:04:33,328 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:04:33,329 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:33,329 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 23:04:33,330 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-11-12 23:04:33,337 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-11-12 23:04:33,337 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:33,338 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:04:33,338 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:33,338 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:04:33,339 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:04:33,339 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:33,340 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:33,341 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:33,341 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-11-12 23:04:33,342 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:04:33,342 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:69, output treesize:65 [2021-11-12 23:04:33,343 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:33,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:33,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:33,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:33,393 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 23:04:35,136 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 23:04:35,136 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 23:04:35,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 44 [2021-11-12 23:04:35,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480660879] [2021-11-12 23:04:35,136 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 23:04:35,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2021-11-12 23:04:35,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:04:35,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-11-12 23:04:35,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=339, Invalid=2313, Unknown=0, NotChecked=0, Total=2652 [2021-11-12 23:04:35,139 INFO L87 Difference]: Start difference. First operand 46 states and 52 transitions. Second operand has 45 states, 45 states have (on average 2.311111111111111) internal successors, (104), 44 states have internal predecessors, (104), 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) [2021-11-12 23:04:35,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:04:35,488 INFO L93 Difference]: Finished difference Result 66 states and 72 transitions. [2021-11-12 23:04:35,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-12 23:04:35,489 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.311111111111111) internal successors, (104), 44 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-11-12 23:04:35,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:04:35,490 INFO L225 Difference]: With dead ends: 66 [2021-11-12 23:04:35,490 INFO L226 Difference]: Without dead ends: 46 [2021-11-12 23:04:35,492 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 76 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 984 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=467, Invalid=2955, Unknown=0, NotChecked=0, Total=3422 [2021-11-12 23:04:35,493 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 9 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 82.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.19ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 64 IncrementalHoareTripleChecker+Unchecked, 103.97ms IncrementalHoareTripleChecker+Time [2021-11-12 23:04:35,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 97 Invalid, 197 Unknown, 0 Unchecked, 1.19ms Time], IncrementalHoareTripleChecker [9 Valid, 124 Invalid, 0 Unknown, 64 Unchecked, 103.97ms Time] [2021-11-12 23:04:35,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-11-12 23:04:35,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2021-11-12 23:04:35,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.1333333333333333) internal successors, (51), 45 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) [2021-11-12 23:04:35,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2021-11-12 23:04:35,507 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 36 [2021-11-12 23:04:35,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:04:35,509 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2021-11-12 23:04:35,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.311111111111111) internal successors, (104), 44 states have internal predecessors, (104), 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) [2021-11-12 23:04:35,510 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2021-11-12 23:04:35,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-12 23:04:35,515 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:04:35,515 INFO L514 BasicCegarLoop]: trace histogram [9, 8, 6, 5, 5, 1, 1, 1, 1, 1] [2021-11-12 23:04:35,558 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-12 23:04:35,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable488 [2021-11-12 23:04:35,733 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:04:35,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:04:35,733 INFO L85 PathProgramCache]: Analyzing trace with hash -2029293156, now seen corresponding path program 12 times [2021-11-12 23:04:35,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:04:35,734 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690321833] [2021-11-12 23:04:35,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:04:35,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:04:35,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:04:36,090 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:04:36,090 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:04:36,090 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690321833] [2021-11-12 23:04:36,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690321833] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 23:04:36,091 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [803679941] [2021-11-12 23:04:36,091 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-12 23:04:36,091 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:04:36,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:04:36,092 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:04:36,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-12 23:04:36,189 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-12 23:04:36,189 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:04:36,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 43 conjunts are in the unsatisfiable core [2021-11-12 23:04:36,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:04:36,347 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 24 treesize of output 20 [2021-11-12 23:04:36,401 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-12 23:04:36,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2021-11-12 23:04:36,468 INFO L354 Elim1Store]: treesize reduction 72, result has 20.9 percent of original size [2021-11-12 23:04:36,469 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 43 [2021-11-12 23:04:36,990 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-12 23:04:36,990 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 30 [2021-11-12 23:04:37,030 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:04:37,031 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:04:38,803 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_237| Int) (|v_ULTIMATE.start_main_~j~0#1_220| Int)) (let ((.cse0 (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)) |c_ULTIMATE.start_main_~j~0#1|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_237| 4)) |v_ULTIMATE.start_main_~j~0#1_220|))) (or (<= 0 (select .cse0 (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 24))) (< (select .cse0 (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 20)) 0) (<= |v_ULTIMATE.start_main_~i~0#1_237| 5) (< |v_ULTIMATE.start_main_~i~0#1_237| (+ |c_ULTIMATE.start_main_~i~0#1| 1))))) is different from false [2021-11-12 23:04:38,843 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 72 [2021-11-12 23:04:38,853 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-12 23:04:38,854 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1204 treesize of output 1180 [2021-11-12 23:04:39,446 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 16 not checked. [2021-11-12 23:04:39,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [803679941] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:04:39,446 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [926169040] [2021-11-12 23:04:39,448 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-12 23:04:39,448 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 23:04:39,448 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 23:04:39,448 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 23:04:39,448 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 23:04:39,454 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:39,454 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:04:39,455 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:39,455 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-11-12 23:04:39,455 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:04:39,456 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:39,456 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:04:39,457 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 163 [2021-11-12 23:04:39,459 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_29|], 36=[|v_#valid_44|]} [2021-11-12 23:04:39,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:39,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:39,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:39,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:39,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:39,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:39,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:39,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:39,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:39,476 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 16 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 23 [2021-11-12 23:04:39,477 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:39,477 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-12 23:04:39,478 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:39,478 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-12 23:04:39,478 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:04:39,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:39,481 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:39,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:39,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:39,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:39,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:39,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:39,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:39,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:39,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:39,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:39,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:39,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:39,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:39,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:39,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:39,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:39,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:39,504 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 38 [2021-11-12 23:04:39,505 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:39,507 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-12 23:04:39,508 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:39,508 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-12 23:04:39,508 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 23:04:39,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:39,512 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:39,513 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:39,514 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-11-12 23:04:39,514 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:04:39,515 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:160, output treesize:122 [2021-11-12 23:04:39,529 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:39,532 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 133 [2021-11-12 23:04:39,536 INFO L180 QuantifierPusher]: treesize reduction 8, result has 95.1 percent of original size [2021-11-12 23:04:39,538 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:04:39,538 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:39,539 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-12 23:04:39,542 INFO L185 QuantifierPusher]: treesize reduction 3, result has 97.9 percent of original size 138 [2021-11-12 23:04:39,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:39,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:39,555 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 [2021-11-12 23:04:39,556 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:39,557 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 23:04:39,558 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:39,558 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 23:04:39,559 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:04:39,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:39,563 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:39,564 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-11-12 23:04:39,566 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 132 [2021-11-12 23:04:39,566 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:04:39,566 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:139, output treesize:132 [2021-11-12 23:04:39,568 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:39,570 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 140 [2021-11-12 23:04:39,573 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:39,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:39,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:39,616 INFO L180 QuantifierPusher]: treesize reduction 8, result has 97.8 percent of original size [2021-11-12 23:04:39,622 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:04:39,624 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:39,625 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:04:39,625 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:39,626 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-11-12 23:04:39,626 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:04:39,627 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:39,627 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 23:04:39,629 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 327 [2021-11-12 23:04:39,630 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:04:39,632 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:39,634 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 303 [2021-11-12 23:04:39,636 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 378 [2021-11-12 23:04:39,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:39,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:39,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:39,679 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 50 treesize of output 55 [2021-11-12 23:04:39,680 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:39,681 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-11-12 23:04:39,682 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:39,683 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-11-12 23:04:39,683 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:04:39,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:39,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:39,702 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 38 treesize of output 40 [2021-11-12 23:04:39,702 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:39,704 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-12 23:04:39,705 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:39,705 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-12 23:04:39,705 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 23:04:39,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:39,725 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:39,732 INFO L180 QuantifierPusher]: treesize reduction 129, result has 72.0 percent of original size [2021-11-12 23:04:39,735 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 332 [2021-11-12 23:04:39,736 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-12 23:04:39,736 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:469, output treesize:332 [2021-11-12 23:04:39,739 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:39,743 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 338 [2021-11-12 23:04:39,749 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:39,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:39,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:39,773 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:39,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:39,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:39,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:39,789 INFO L180 QuantifierPusher]: treesize reduction 50, result has 59.0 percent of original size [2021-11-12 23:04:39,790 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:04:39,791 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:39,791 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 23:04:39,792 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-11-12 23:04:39,798 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-11-12 23:04:39,798 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:39,799 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:04:39,799 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:39,799 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:04:39,800 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:04:39,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:39,801 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:39,802 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:39,802 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-11-12 23:04:39,803 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:04:39,803 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:69, output treesize:65 [2021-11-12 23:04:39,804 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:39,806 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-11-12 23:04:39,825 INFO L180 QuantifierPusher]: treesize reduction 42, result has 70.6 percent of original size [2021-11-12 23:04:39,827 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 106 [2021-11-12 23:04:39,831 INFO L180 QuantifierPusher]: treesize reduction 7, result has 95.0 percent of original size [2021-11-12 23:04:39,835 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-11-12 23:04:39,838 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:39,849 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:39,851 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:39,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:39,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:39,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:39,870 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:39,873 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 146 [2021-11-12 23:04:39,878 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:39,883 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 163 [2021-11-12 23:04:39,886 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:39,902 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:39,903 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:39,905 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:39,906 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:39,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:39,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:39,909 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:39,915 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:39,924 INFO L180 QuantifierPusher]: treesize reduction 42, result has 64.4 percent of original size [2021-11-12 23:04:39,926 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-11-12 23:04:39,928 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:39,932 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-11-12 23:04:39,942 INFO L180 QuantifierPusher]: treesize reduction 42, result has 64.4 percent of original size [2021-11-12 23:04:39,944 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-11-12 23:04:39,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:39,953 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:39,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:39,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:39,989 INFO L180 QuantifierPusher]: treesize reduction 50, result has 59.0 percent of original size [2021-11-12 23:04:39,991 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:04:39,991 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:39,992 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 23:04:39,993 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-11-12 23:04:40,000 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-11-12 23:04:40,001 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:40,002 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:04:40,002 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:40,002 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:04:40,003 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:04:40,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:40,005 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:40,006 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:40,007 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-11-12 23:04:40,008 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:04:40,008 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:69, output treesize:65 [2021-11-12 23:04:40,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:40,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:40,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:40,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:40,046 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 23:04:42,037 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 23:04:42,038 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 23:04:42,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 19, 19] total 46 [2021-11-12 23:04:42,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532899884] [2021-11-12 23:04:42,038 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 23:04:42,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2021-11-12 23:04:42,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:04:42,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-11-12 23:04:42,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=2561, Unknown=1, NotChecked=102, Total=2862 [2021-11-12 23:04:42,041 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand has 47 states, 47 states have (on average 2.106382978723404) internal successors, (99), 46 states have internal predecessors, (99), 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) [2021-11-12 23:04:43,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:04:43,643 INFO L93 Difference]: Finished difference Result 53 states and 58 transitions. [2021-11-12 23:04:43,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-12 23:04:43,643 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.106382978723404) internal successors, (99), 46 states have internal predecessors, (99), 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 38 [2021-11-12 23:04:43,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:04:43,644 INFO L225 Difference]: With dead ends: 53 [2021-11-12 23:04:43,644 INFO L226 Difference]: Without dead ends: 51 [2021-11-12 23:04:43,646 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 75 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 866 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=425, Invalid=4408, Unknown=1, NotChecked=136, Total=4970 [2021-11-12 23:04:43,647 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 48 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 848 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 492.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.92ms SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 49 IncrementalHoareTripleChecker+Unchecked, 591.89ms IncrementalHoareTripleChecker+Time [2021-11-12 23:04:43,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 178 Invalid, 961 Unknown, 0 Unchecked, 3.92ms Time], IncrementalHoareTripleChecker [64 Valid, 848 Invalid, 0 Unknown, 49 Unchecked, 591.89ms Time] [2021-11-12 23:04:43,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-11-12 23:04:43,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2021-11-12 23:04:43,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.125) internal successors, (54), 48 states have internal predecessors, (54), 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) [2021-11-12 23:04:43,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 54 transitions. [2021-11-12 23:04:43,655 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 54 transitions. Word has length 38 [2021-11-12 23:04:43,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:04:43,655 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 54 transitions. [2021-11-12 23:04:43,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.106382978723404) internal successors, (99), 46 states have internal predecessors, (99), 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) [2021-11-12 23:04:43,656 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2021-11-12 23:04:43,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-12 23:04:43,657 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:04:43,657 INFO L514 BasicCegarLoop]: trace histogram [9, 8, 7, 6, 6, 1, 1, 1, 1, 1] [2021-11-12 23:04:43,687 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2021-11-12 23:04:43,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable519,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:04:43,859 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:04:43,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:04:43,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1292371256, now seen corresponding path program 13 times [2021-11-12 23:04:43,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:04:43,860 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009358629] [2021-11-12 23:04:43,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:04:43,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:04:43,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:04:44,305 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 30 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:04:44,305 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:04:44,305 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009358629] [2021-11-12 23:04:44,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009358629] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 23:04:44,305 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550874885] [2021-11-12 23:04:44,305 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-12 23:04:44,306 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:04:44,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:04:44,307 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:04:44,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-12 23:04:44,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:04:44,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 43 conjunts are in the unsatisfiable core [2021-11-12 23:04:44,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:04:44,641 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 17 treesize of output 13 [2021-11-12 23:04:45,046 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2021-11-12 23:04:45,083 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 129 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:04:45,084 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:04:45,445 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2021-11-12 23:04:45,447 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2021-11-12 23:04:45,907 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 129 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:04:45,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550874885] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:04:45,907 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [772401215] [2021-11-12 23:04:45,908 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-12 23:04:45,909 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 23:04:45,909 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 23:04:45,909 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 23:04:45,909 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 23:04:45,914 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:45,914 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:04:45,914 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:45,915 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:04:45,915 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:04:45,916 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:45,916 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-11-12 23:04:45,917 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 163 [2021-11-12 23:04:45,919 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_30|], 36=[|v_#valid_45|]} [2021-11-12 23:04:45,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:45,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:45,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:45,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:45,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:45,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:45,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:45,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:45,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:45,946 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 16 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 23 [2021-11-12 23:04:45,946 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:45,947 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-12 23:04:45,947 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:45,947 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-12 23:04:45,948 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:04:45,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:45,951 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:45,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:45,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:45,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:45,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:45,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:45,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:45,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:45,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:45,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:45,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:45,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:45,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:45,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:45,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:45,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:45,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:45,974 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 38 [2021-11-12 23:04:45,975 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:45,977 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-12 23:04:45,978 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:45,978 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-12 23:04:45,978 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 23:04:45,978 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:45,981 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:45,982 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:45,983 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-11-12 23:04:45,984 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:04:45,984 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:160, output treesize:122 [2021-11-12 23:04:45,987 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:45,989 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 133 [2021-11-12 23:04:45,991 INFO L180 QuantifierPusher]: treesize reduction 8, result has 95.1 percent of original size [2021-11-12 23:04:45,993 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:04:45,993 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:45,994 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 23:04:45,995 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 160 [2021-11-12 23:04:46,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:46,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:46,007 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 38 treesize of output 40 [2021-11-12 23:04:46,007 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:46,008 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-12 23:04:46,009 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:46,009 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-12 23:04:46,010 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:04:46,010 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:46,013 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:46,015 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:46,016 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 154 [2021-11-12 23:04:46,016 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:04:46,016 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:158, output treesize:154 [2021-11-12 23:04:46,023 INFO L180 QuantifierPusher]: treesize reduction 11, result has 93.5 percent of original size [2021-11-12 23:04:46,025 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 151 [2021-11-12 23:04:46,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:46,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:46,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:46,097 INFO L180 QuantifierPusher]: treesize reduction 8, result has 97.9 percent of original size [2021-11-12 23:04:46,105 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:04:46,109 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:46,110 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:04:46,110 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:46,111 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-11-12 23:04:46,112 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:04:46,112 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:46,113 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 23:04:46,117 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 337 [2021-11-12 23:04:46,117 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:04:46,121 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:46,125 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 313 [2021-11-12 23:04:46,129 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 388 [2021-11-12 23:04:46,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:46,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:46,157 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 40 [2021-11-12 23:04:46,158 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:46,159 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-12 23:04:46,160 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:46,161 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-12 23:04:46,161 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:04:46,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:46,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:46,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:46,179 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 58 treesize of output 63 [2021-11-12 23:04:46,180 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:46,181 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-12 23:04:46,182 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:46,182 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-12 23:04:46,182 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 23:04:46,183 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:46,202 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:46,209 INFO L180 QuantifierPusher]: treesize reduction 117, result has 75.0 percent of original size [2021-11-12 23:04:46,214 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 351 [2021-11-12 23:04:46,215 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-12 23:04:46,215 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:479, output treesize:351 [2021-11-12 23:04:46,221 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:46,224 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 357 [2021-11-12 23:04:46,230 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:46,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:46,271 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:46,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:46,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:46,274 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:46,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:46,299 INFO L180 QuantifierPusher]: treesize reduction 50, result has 59.0 percent of original size [2021-11-12 23:04:46,300 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:04:46,301 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:46,301 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 23:04:46,302 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-11-12 23:04:46,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-11-12 23:04:46,307 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:46,308 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:04:46,308 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:46,308 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:04:46,309 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:04:46,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:46,310 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:46,311 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:46,311 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-11-12 23:04:46,312 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:04:46,312 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:69, output treesize:65 [2021-11-12 23:04:46,313 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:46,314 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-11-12 23:04:46,322 INFO L180 QuantifierPusher]: treesize reduction 42, result has 70.6 percent of original size [2021-11-12 23:04:46,324 INFO L185 QuantifierPusher]: treesize reduction 3, result has 96.9 percent of original size 93 [2021-11-12 23:04:46,326 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.7 percent of original size [2021-11-12 23:04:46,329 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-11-12 23:04:46,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:46,338 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:46,339 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:46,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:46,341 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:46,343 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:46,349 INFO L180 QuantifierPusher]: treesize reduction 42, result has 64.4 percent of original size [2021-11-12 23:04:46,350 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-11-12 23:04:46,352 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:46,355 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-11-12 23:04:46,362 INFO L180 QuantifierPusher]: treesize reduction 42, result has 64.4 percent of original size [2021-11-12 23:04:46,363 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-11-12 23:04:46,364 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:46,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:46,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:46,391 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:46,411 INFO L180 QuantifierPusher]: treesize reduction 50, result has 59.0 percent of original size [2021-11-12 23:04:46,412 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:04:46,413 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:46,413 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 23:04:46,415 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-11-12 23:04:46,421 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-11-12 23:04:46,422 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:46,422 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:04:46,423 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:46,423 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:04:46,423 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:04:46,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:46,426 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:46,427 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:46,428 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-11-12 23:04:46,428 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:04:46,429 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:69, output treesize:65 [2021-11-12 23:04:46,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:46,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:46,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:46,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:46,468 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 23:04:48,285 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 23:04:48,285 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 23:04:48,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 51 [2021-11-12 23:04:48,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925767380] [2021-11-12 23:04:48,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 23:04:48,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2021-11-12 23:04:48,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:04:48,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-11-12 23:04:48,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=3222, Unknown=0, NotChecked=0, Total=3422 [2021-11-12 23:04:48,289 INFO L87 Difference]: Start difference. First operand 49 states and 54 transitions. Second operand has 52 states, 52 states have (on average 2.3076923076923075) internal successors, (120), 51 states have internal predecessors, (120), 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) [2021-11-12 23:04:49,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:04:49,820 INFO L93 Difference]: Finished difference Result 76 states and 82 transitions. [2021-11-12 23:04:49,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-12 23:04:49,821 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.3076923076923075) internal successors, (120), 51 states have internal predecessors, (120), 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 41 [2021-11-12 23:04:49,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:04:49,822 INFO L225 Difference]: With dead ends: 76 [2021-11-12 23:04:49,822 INFO L226 Difference]: Without dead ends: 49 [2021-11-12 23:04:49,824 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 81 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1413 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=409, Invalid=5291, Unknown=0, NotChecked=0, Total=5700 [2021-11-12 23:04:49,825 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 37 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 1099 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 550.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 1169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.03ms SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 667.77ms IncrementalHoareTripleChecker+Time [2021-11-12 23:04:49,825 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 277 Invalid, 1169 Unknown, 0 Unchecked, 4.03ms Time], IncrementalHoareTripleChecker [70 Valid, 1099 Invalid, 0 Unknown, 0 Unchecked, 667.77ms Time] [2021-11-12 23:04:49,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-11-12 23:04:49,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2021-11-12 23:04:49,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.1041666666666667) internal successors, (53), 48 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:04:49,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2021-11-12 23:04:49,839 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 41 [2021-11-12 23:04:49,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:04:49,839 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2021-11-12 23:04:49,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 2.3076923076923075) internal successors, (120), 51 states have internal predecessors, (120), 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) [2021-11-12 23:04:49,839 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2021-11-12 23:04:49,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-12 23:04:49,840 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:04:49,840 INFO L514 BasicCegarLoop]: trace histogram [10, 9, 7, 6, 6, 1, 1, 1, 1, 1] [2021-11-12 23:04:49,870 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-12 23:04:50,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable559,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:04:50,045 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:04:50,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:04:50,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1038961375, now seen corresponding path program 14 times [2021-11-12 23:04:50,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:04:50,045 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803303371] [2021-11-12 23:04:50,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:04:50,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:04:50,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:04:50,467 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:04:50,467 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:04:50,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803303371] [2021-11-12 23:04:50,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803303371] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 23:04:50,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035535410] [2021-11-12 23:04:50,468 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-12 23:04:50,468 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:04:50,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:04:50,469 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:04:50,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-12 23:04:50,718 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-11-12 23:04:50,718 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:04:50,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 45 conjunts are in the unsatisfiable core [2021-11-12 23:04:50,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:04:50,895 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2021-11-12 23:04:50,975 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-11-12 23:04:50,976 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-11-12 23:04:51,305 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2021-11-12 23:04:51,341 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:04:51,341 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:04:51,730 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 27 [2021-11-12 23:04:51,733 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 191 treesize of output 183 [2021-11-12 23:04:52,236 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:04:52,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2035535410] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:04:52,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2074465361] [2021-11-12 23:04:52,238 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-12 23:04:52,238 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 23:04:52,238 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 23:04:52,238 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 23:04:52,239 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 23:04:52,255 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:52,256 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:04:52,256 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:52,257 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-11-12 23:04:52,257 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:04:52,258 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:52,258 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:04:52,260 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 163 [2021-11-12 23:04:52,263 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_31|], 36=[|v_#valid_46|]} [2021-11-12 23:04:52,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:52,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:52,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:52,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:52,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:52,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:52,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:52,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:52,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:52,286 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 16 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 23 [2021-11-12 23:04:52,287 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:52,287 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-12 23:04:52,288 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:52,288 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-12 23:04:52,289 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:04:52,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:52,293 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:52,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:52,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:52,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:52,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:52,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:52,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:52,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:52,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:52,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:52,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:52,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:52,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:52,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:52,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:52,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:52,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:52,322 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 38 [2021-11-12 23:04:52,323 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:52,326 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-12 23:04:52,326 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:52,327 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-12 23:04:52,327 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 23:04:52,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:52,332 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:52,334 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:52,336 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-11-12 23:04:52,336 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:04:52,337 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:160, output treesize:122 [2021-11-12 23:04:52,342 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:52,345 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 133 [2021-11-12 23:04:52,349 INFO L180 QuantifierPusher]: treesize reduction 8, result has 95.1 percent of original size [2021-11-12 23:04:52,351 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:04:52,352 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:52,352 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 23:04:52,355 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 160 [2021-11-12 23:04:52,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:52,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:52,369 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 38 treesize of output 40 [2021-11-12 23:04:52,369 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:52,371 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-12 23:04:52,371 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:52,372 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-12 23:04:52,372 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:04:52,373 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:52,378 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:52,380 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:52,382 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 154 [2021-11-12 23:04:52,383 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:04:52,383 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:158, output treesize:154 [2021-11-12 23:04:52,386 INFO L180 QuantifierPusher]: treesize reduction 11, result has 93.5 percent of original size [2021-11-12 23:04:52,390 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 151 [2021-11-12 23:04:52,394 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:52,406 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:52,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:52,441 INFO L180 QuantifierPusher]: treesize reduction 8, result has 97.9 percent of original size [2021-11-12 23:04:52,446 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:04:52,449 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:52,449 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:04:52,450 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:52,450 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-11-12 23:04:52,451 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:04:52,451 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:52,452 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 23:04:52,454 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 337 [2021-11-12 23:04:52,454 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:04:52,456 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:52,458 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 313 [2021-11-12 23:04:52,461 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 388 [2021-11-12 23:04:52,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:52,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:52,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:52,486 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 58 treesize of output 63 [2021-11-12 23:04:52,487 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:52,488 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-12 23:04:52,489 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:52,489 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-12 23:04:52,489 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:04:52,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:52,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:04:52,506 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 38 treesize of output 40 [2021-11-12 23:04:52,506 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:52,507 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-12 23:04:52,508 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:52,508 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-12 23:04:52,508 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 23:04:52,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:52,528 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:52,535 INFO L180 QuantifierPusher]: treesize reduction 117, result has 75.0 percent of original size [2021-11-12 23:04:52,538 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 351 [2021-11-12 23:04:52,538 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-12 23:04:52,539 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:479, output treesize:351 [2021-11-12 23:04:52,542 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:52,546 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 357 [2021-11-12 23:04:52,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:52,575 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:52,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:52,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:52,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:52,578 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:52,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:52,585 INFO L180 QuantifierPusher]: treesize reduction 50, result has 59.0 percent of original size [2021-11-12 23:04:52,586 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:04:52,586 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:52,587 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 23:04:52,587 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-11-12 23:04:52,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-11-12 23:04:52,593 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:52,594 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:04:52,594 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:52,594 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:04:52,595 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:04:52,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:52,596 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:52,597 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:52,597 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-11-12 23:04:52,598 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:04:52,598 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:69, output treesize:65 [2021-11-12 23:04:52,599 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:52,600 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-11-12 23:04:52,608 INFO L180 QuantifierPusher]: treesize reduction 42, result has 70.6 percent of original size [2021-11-12 23:04:52,609 INFO L185 QuantifierPusher]: treesize reduction 3, result has 96.9 percent of original size 93 [2021-11-12 23:04:52,612 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.7 percent of original size [2021-11-12 23:04:52,614 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-11-12 23:04:52,616 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:52,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:52,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:52,626 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:52,626 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:52,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:52,634 INFO L180 QuantifierPusher]: treesize reduction 42, result has 64.4 percent of original size [2021-11-12 23:04:52,635 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-11-12 23:04:52,637 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:52,640 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-11-12 23:04:52,648 INFO L180 QuantifierPusher]: treesize reduction 42, result has 64.4 percent of original size [2021-11-12 23:04:52,649 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-11-12 23:04:52,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:52,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:52,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:52,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:52,680 INFO L180 QuantifierPusher]: treesize reduction 50, result has 59.0 percent of original size [2021-11-12 23:04:52,681 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:04:52,681 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:52,682 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 23:04:52,683 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-11-12 23:04:52,688 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-11-12 23:04:52,688 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:52,689 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:04:52,689 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:52,689 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 23:04:52,689 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:04:52,690 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:52,691 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:52,692 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:04:52,692 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-11-12 23:04:52,692 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:04:52,693 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:69, output treesize:65 [2021-11-12 23:04:52,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:52,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:52,702 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:52,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:04:52,718 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 23:04:54,602 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 23:04:54,602 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 23:04:54,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 45 [2021-11-12 23:04:54,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670276686] [2021-11-12 23:04:54,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 23:04:54,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-11-12 23:04:54,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:04:54,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-11-12 23:04:54,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=2593, Unknown=0, NotChecked=0, Total=2756 [2021-11-12 23:04:54,604 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand has 46 states, 46 states have (on average 2.347826086956522) internal successors, (108), 45 states have internal predecessors, (108), 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) [2021-11-12 23:04:55,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:04:55,642 INFO L93 Difference]: Finished difference Result 79 states and 83 transitions. [2021-11-12 23:04:55,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-12 23:04:55,642 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.347826086956522) internal successors, (108), 45 states have internal predecessors, (108), 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 43 [2021-11-12 23:04:55,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:04:55,643 INFO L225 Difference]: With dead ends: 79 [2021-11-12 23:04:55,643 INFO L226 Difference]: Without dead ends: 77 [2021-11-12 23:04:55,644 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 92 SyntacticMatches, 3 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 791 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=254, Invalid=3778, Unknown=0, NotChecked=0, Total=4032 [2021-11-12 23:04:55,644 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 22 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 825 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 505.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.54ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 23 IncrementalHoareTripleChecker+Unchecked, 598.10ms IncrementalHoareTripleChecker+Time [2021-11-12 23:04:55,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 285 Invalid, 875 Unknown, 0 Unchecked, 3.54ms Time], IncrementalHoareTripleChecker [27 Valid, 825 Invalid, 0 Unknown, 23 Unchecked, 598.10ms Time] [2021-11-12 23:04:55,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-11-12 23:04:55,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 53. [2021-11-12 23:04:55,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.0961538461538463) internal successors, (57), 52 states have internal predecessors, (57), 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) [2021-11-12 23:04:55,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2021-11-12 23:04:55,658 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 43 [2021-11-12 23:04:55,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:04:55,658 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2021-11-12 23:04:55,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.347826086956522) internal successors, (108), 45 states have internal predecessors, (108), 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) [2021-11-12 23:04:55,659 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2021-11-12 23:04:55,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-12 23:04:55,660 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:04:55,660 INFO L514 BasicCegarLoop]: trace histogram [11, 10, 7, 6, 6, 1, 1, 1, 1, 1] [2021-11-12 23:04:55,690 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-12 23:04:55,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable590,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:04:55,869 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:04:55,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:04:55,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1969765690, now seen corresponding path program 15 times [2021-11-12 23:04:55,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:04:55,869 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054656435] [2021-11-12 23:04:55,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:04:55,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:04:55,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:04:56,324 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 0 proven. 167 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:04:56,324 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:04:56,324 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054656435] [2021-11-12 23:04:56,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054656435] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 23:04:56,324 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126146925] [2021-11-12 23:04:56,324 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-12 23:04:56,325 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:04:56,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:04:56,326 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:04:56,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0ecc45-fe8d-40cd-af82-7dae2caaa67b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-12 23:04:56,574 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-12 23:04:56,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:04:56,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 61 conjunts are in the unsatisfiable core [2021-11-12 23:04:56,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:04:56,636 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 24 treesize of output 20 [2021-11-12 23:04:56,691 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-12 23:04:56,692 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 29 [2021-11-12 23:04:56,768 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-12 23:04:56,768 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 48 [2021-11-12 23:04:56,872 INFO L354 Elim1Store]: treesize reduction 147, result has 17.4 percent of original size [2021-11-12 23:04:56,873 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 77 treesize of output 67 [2021-11-12 23:04:57,024 INFO L354 Elim1Store]: treesize reduction 176, result has 17.4 percent of original size [2021-11-12 23:04:57,024 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 81 treesize of output 71 [2021-11-12 23:04:57,186 INFO L354 Elim1Store]: treesize reduction 280, result has 14.1 percent of original size [2021-11-12 23:04:57,186 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 103 treesize of output 90 [2021-11-12 23:04:57,411 INFO L354 Elim1Store]: treesize reduction 336, result has 14.1 percent of original size [2021-11-12 23:04:57,411 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 110 treesize of output 94 [2021-11-12 23:04:57,674 INFO L354 Elim1Store]: treesize reduction 434, result has 12.9 percent of original size [2021-11-12 23:04:57,674 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 116 treesize of output 103 [2021-11-12 23:04:57,968 INFO L354 Elim1Store]: treesize reduction 434, result has 12.9 percent of original size [2021-11-12 23:04:57,969 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 116 treesize of output 103 [2021-11-12 23:04:59,842 INFO L354 Elim1Store]: treesize reduction 252, result has 0.4 percent of original size [2021-11-12 23:04:59,843 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 139 treesize of output 55 [2021-11-12 23:04:59,903 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 0 proven. 167 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:04:59,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:05:19,729 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 196 treesize of output 192 [2021-11-12 23:05:25,349 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-12 23:05:25,672 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29318184946 treesize of output 29309665266