./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/sqm-if.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54cb4b2-c6a1-491d-becc-0a06205e9977/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54cb4b2-c6a1-491d-becc-0a06205e9977/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54cb4b2-c6a1-491d-becc-0a06205e9977/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54cb4b2-c6a1-491d-becc-0a06205e9977/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-fpi/sqm-if.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54cb4b2-c6a1-491d-becc-0a06205e9977/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54cb4b2-c6a1-491d-becc-0a06205e9977/bin/utaipan-TEXQjIfE4P --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 ec5a38bdcfa55d3eade09a482c32f3a3863eaa8e13e2a337e00dc10a9c55f830 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:46:07,141 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:46:07,149 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:46:07,202 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:46:07,203 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:46:07,205 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:46:07,207 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:46:07,210 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:46:07,217 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:46:07,219 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:46:07,220 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:46:07,224 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:46:07,225 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:46:07,235 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:46:07,237 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:46:07,240 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:46:07,246 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:46:07,247 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:46:07,249 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:46:07,252 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:46:07,255 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:46:07,259 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:46:07,261 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:46:07,263 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:46:07,272 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:46:07,273 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:46:07,273 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:46:07,275 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:46:07,275 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:46:07,277 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:46:07,277 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:46:07,278 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:46:07,279 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:46:07,280 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:46:07,281 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:46:07,282 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:46:07,282 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:46:07,283 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:46:07,283 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:46:07,284 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:46:07,285 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:46:07,287 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54cb4b2-c6a1-491d-becc-0a06205e9977/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-21 01:46:07,351 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:46:07,352 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:46:07,352 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:46:07,361 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:46:07,362 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:46:07,362 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:46:07,363 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:46:07,363 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:46:07,363 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:46:07,363 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:46:07,365 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:46:07,365 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:46:07,366 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:46:07,366 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:46:07,366 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:46:07,367 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:46:07,367 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:46:07,367 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:46:07,369 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:46:07,370 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 01:46:07,370 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:46:07,370 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 01:46:07,371 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:46:07,371 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:46:07,371 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:46:07,371 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:46:07,374 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 01:46:07,374 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:46:07,375 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:46:07,375 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:46:07,375 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:46:07,376 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:46:07,376 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:46:07,377 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:46:07,377 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:46:07,377 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:46:07,377 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:46:07,378 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:46:07,378 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:46:07,378 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:46:07,379 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:46:07,379 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_c54cb4b2-c6a1-491d-becc-0a06205e9977/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54cb4b2-c6a1-491d-becc-0a06205e9977/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ec5a38bdcfa55d3eade09a482c32f3a3863eaa8e13e2a337e00dc10a9c55f830 [2021-11-21 01:46:07,712 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:46:07,748 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:46:07,764 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:46:07,766 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:46:07,767 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:46:07,768 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54cb4b2-c6a1-491d-becc-0a06205e9977/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/array-fpi/sqm-if.c [2021-11-21 01:46:07,879 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54cb4b2-c6a1-491d-becc-0a06205e9977/bin/utaipan-TEXQjIfE4P/data/fc9614fb1/abe1b391c47a41168e9ff3c1e6c48d77/FLAG1c1ea5d44 [2021-11-21 01:46:08,399 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:46:08,400 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54cb4b2-c6a1-491d-becc-0a06205e9977/sv-benchmarks/c/array-fpi/sqm-if.c [2021-11-21 01:46:08,408 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54cb4b2-c6a1-491d-becc-0a06205e9977/bin/utaipan-TEXQjIfE4P/data/fc9614fb1/abe1b391c47a41168e9ff3c1e6c48d77/FLAG1c1ea5d44 [2021-11-21 01:46:08,746 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54cb4b2-c6a1-491d-becc-0a06205e9977/bin/utaipan-TEXQjIfE4P/data/fc9614fb1/abe1b391c47a41168e9ff3c1e6c48d77 [2021-11-21 01:46:08,749 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:46:08,751 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:46:08,759 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:46:08,759 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:46:08,763 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:46:08,764 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:46:08" (1/1) ... [2021-11-21 01:46:08,768 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cd1de1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:08, skipping insertion in model container [2021-11-21 01:46:08,768 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:46:08" (1/1) ... [2021-11-21 01:46:08,777 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:46:08,800 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:46:08,982 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54cb4b2-c6a1-491d-becc-0a06205e9977/sv-benchmarks/c/array-fpi/sqm-if.c[589,602] [2021-11-21 01:46:09,012 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:46:09,021 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:46:09,036 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54cb4b2-c6a1-491d-becc-0a06205e9977/sv-benchmarks/c/array-fpi/sqm-if.c[589,602] [2021-11-21 01:46:09,047 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:46:09,063 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:46:09,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:09 WrapperNode [2021-11-21 01:46:09,064 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:46:09,065 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:46:09,066 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:46:09,066 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:46:09,075 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:09" (1/1) ... [2021-11-21 01:46:09,083 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:09" (1/1) ... [2021-11-21 01:46:09,110 INFO L137 Inliner]: procedures = 16, calls = 19, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 74 [2021-11-21 01:46:09,110 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:46:09,111 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:46:09,112 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:46:09,112 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:46:09,122 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:09" (1/1) ... [2021-11-21 01:46:09,124 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:09" (1/1) ... [2021-11-21 01:46:09,130 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:09" (1/1) ... [2021-11-21 01:46:09,131 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:09" (1/1) ... [2021-11-21 01:46:09,140 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:09" (1/1) ... [2021-11-21 01:46:09,145 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:09" (1/1) ... [2021-11-21 01:46:09,149 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:09" (1/1) ... [2021-11-21 01:46:09,152 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:46:09,154 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:46:09,154 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:46:09,154 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:46:09,155 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:09" (1/1) ... [2021-11-21 01:46:09,182 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:46:09,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54cb4b2-c6a1-491d-becc-0a06205e9977/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:46:09,216 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54cb4b2-c6a1-491d-becc-0a06205e9977/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:46:09,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54cb4b2-c6a1-491d-becc-0a06205e9977/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:46:09,279 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:46:09,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 01:46:09,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 01:46:09,280 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 01:46:09,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:46:09,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:46:09,281 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 01:46:09,353 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:46:09,354 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:46:09,524 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:46:09,605 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:46:09,605 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-21 01:46:09,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:46:09 BoogieIcfgContainer [2021-11-21 01:46:09,609 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:46:09,611 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:46:09,611 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:46:09,615 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:46:09,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:46:08" (1/3) ... [2021-11-21 01:46:09,617 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64c382fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:46:09, skipping insertion in model container [2021-11-21 01:46:09,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:09" (2/3) ... [2021-11-21 01:46:09,618 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64c382fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:46:09, skipping insertion in model container [2021-11-21 01:46:09,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:46:09" (3/3) ... [2021-11-21 01:46:09,620 INFO L111 eAbstractionObserver]: Analyzing ICFG sqm-if.c [2021-11-21 01:46:09,626 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:46:09,627 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 01:46:09,704 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:46:09,727 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 [2021-11-21 01:46:09,727 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 01:46:09,759 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 states have internal predecessors, (15), 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) [2021-11-21 01:46:09,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-21 01:46:09,777 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:46:09,777 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:46:09,778 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:46:09,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:46:09,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1095923036, now seen corresponding path program 1 times [2021-11-21 01:46:09,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:46:09,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913510364] [2021-11-21 01:46:09,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:46:09,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:46:09,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:46:10,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:46:10,114 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:46:10,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913510364] [2021-11-21 01:46:10,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913510364] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:46:10,116 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:46:10,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:46:10,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815335998] [2021-11-21 01:46:10,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:46:10,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:46:10,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:46:10,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:46:10,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:46:10,187 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 states have internal predecessors, (15), 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 2.3333333333333335) 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) [2021-11-21 01:46:10,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:46:10,302 INFO L93 Difference]: Finished difference Result 20 states and 27 transitions. [2021-11-21 01:46:10,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:46:10,305 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) 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 [2021-11-21 01:46:10,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:46:10,314 INFO L225 Difference]: With dead ends: 20 [2021-11-21 01:46:10,322 INFO L226 Difference]: Without dead ends: 10 [2021-11-21 01:46:10,328 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 [2021-11-21 01:46:10,332 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:46:10,336 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 8 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:46:10,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-11-21 01:46:10,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-11-21 01:46:10,373 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) [2021-11-21 01:46:10,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2021-11-21 01:46:10,376 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 7 [2021-11-21 01:46:10,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:46:10,377 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2021-11-21 01:46:10,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) 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) [2021-11-21 01:46:10,380 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2021-11-21 01:46:10,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-21 01:46:10,381 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:46:10,382 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:46:10,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 01:46:10,384 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:46:10,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:46:10,389 INFO L85 PathProgramCache]: Analyzing trace with hash 255696374, now seen corresponding path program 1 times [2021-11-21 01:46:10,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:46:10,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077426008] [2021-11-21 01:46:10,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:46:10,391 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:46:10,465 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:46:10,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [184785210] [2021-11-21 01:46:10,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:46:10,472 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:46:10,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54cb4b2-c6a1-491d-becc-0a06205e9977/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:46:10,475 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54cb4b2-c6a1-491d-becc-0a06205e9977/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:46:10,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54cb4b2-c6a1-491d-becc-0a06205e9977/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 01:46:10,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:46:10,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:46:10,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:46:10,637 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 01:46:10,638 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:46:10,638 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:46:10,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077426008] [2021-11-21 01:46:10,639 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:46:10,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184785210] [2021-11-21 01:46:10,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184785210] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:46:10,640 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:46:10,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:46:10,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177582871] [2021-11-21 01:46:10,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:46:10,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:46:10,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:46:10,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:46:10,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:46:10,644 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:46:10,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:46:10,691 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2021-11-21 01:46:10,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:46:10,692 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-21 01:46:10,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:46:10,693 INFO L225 Difference]: With dead ends: 21 [2021-11-21 01:46:10,693 INFO L226 Difference]: Without dead ends: 16 [2021-11-21 01:46:10,693 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:46:10,696 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 11 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:46:10,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 6 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:46:10,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-11-21 01:46:10,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 11. [2021-11-21 01:46:10,702 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) [2021-11-21 01:46:10,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2021-11-21 01:46:10,703 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 8 [2021-11-21 01:46:10,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:46:10,703 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2021-11-21 01:46:10,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:46:10,704 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2021-11-21 01:46:10,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-21 01:46:10,704 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:46:10,705 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:46:10,750 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54cb4b2-c6a1-491d-becc-0a06205e9977/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-21 01:46:10,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54cb4b2-c6a1-491d-becc-0a06205e9977/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:46:10,927 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:46:10,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:46:10,928 INFO L85 PathProgramCache]: Analyzing trace with hash -652476163, now seen corresponding path program 1 times [2021-11-21 01:46:10,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:46:10,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681194794] [2021-11-21 01:46:10,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:46:10,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:46:10,988 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:46:10,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1453590853] [2021-11-21 01:46:10,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:46:10,989 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:46:10,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54cb4b2-c6a1-491d-becc-0a06205e9977/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:46:10,997 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54cb4b2-c6a1-491d-becc-0a06205e9977/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:46:11,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54cb4b2-c6a1-491d-becc-0a06205e9977/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-21 01:46:11,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:46:11,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-21 01:46:11,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:46:11,194 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 11 treesize of output 7 [2021-11-21 01:46:11,369 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 01:46:11,369 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:46:12,884 INFO L354 Elim1Store]: treesize reduction 1103, result has 37.2 percent of original size [2021-11-21 01:46:12,884 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 5 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 9 new quantified variables, introduced 31 case distinctions, treesize of input 267 treesize of output 742 [2021-11-21 01:46:13,572 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:46:13,572 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:46:13,573 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:46:13,709 INFO L354 Elim1Store]: treesize reduction 113, result has 32.7 percent of original size [2021-11-21 01:46:13,710 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 206 treesize of output 206 [2021-11-21 01:46:16,036 INFO L354 Elim1Store]: treesize reduction 244, result has 30.3 percent of original size [2021-11-21 01:46:16,037 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 852 treesize of output 770 [2021-11-21 01:46:16,283 INFO L354 Elim1Store]: treesize reduction 227, result has 34.2 percent of original size [2021-11-21 01:46:16,284 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 873 treesize of output 811 [2021-11-21 01:46:16,544 INFO L354 Elim1Store]: treesize reduction 227, result has 34.2 percent of original size [2021-11-21 01:46:16,545 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 855 treesize of output 836 [2021-11-21 01:46:16,967 INFO L354 Elim1Store]: treesize reduction 196, result has 44.0 percent of original size [2021-11-21 01:46:16,968 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 905 treesize of output 816 [2021-11-21 01:46:43,173 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 01:46:43,173 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:46:43,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681194794] [2021-11-21 01:46:43,173 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:46:43,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453590853] [2021-11-21 01:46:43,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1453590853] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:46:43,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1066408479] [2021-11-21 01:46:43,195 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-21 01:46:43,195 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:46:43,200 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:46:43,205 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:46:43,206 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:46:43,376 INFO L354 Elim1Store]: treesize reduction 97, result has 31.2 percent of original size [2021-11-21 01:46:43,377 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 29 treesize of output 60 [2021-11-21 01:46:43,559 INFO L354 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2021-11-21 01:46:43,560 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 44 treesize of output 77 [2021-11-21 01:46:43,726 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 11 treesize of output 7 [2021-11-21 01:46:43,739 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:46:43,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:43,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:43,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:43,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:43,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:43,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:43,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:43,885 INFO L354 Elim1Store]: treesize reduction 139, result has 9.7 percent of original size [2021-11-21 01:46:43,886 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 5 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 8 new quantified variables, introduced 6 case distinctions, treesize of input 234 treesize of output 344 [2021-11-21 01:46:44,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:44,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:44,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:44,023 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 50 [2021-11-21 01:46:44,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:44,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:44,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:44,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:44,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:44,054 INFO L354 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2021-11-21 01:46:44,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 99 treesize of output 57 [2021-11-21 01:46:44,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:44,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:44,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:44,135 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 143 treesize of output 70 [2021-11-21 01:46:44,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:44,201 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 36 [2021-11-21 01:46:44,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:44,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:44,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:44,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:44,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:44,306 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:46:44,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 244 treesize of output 167 [2021-11-21 01:46:44,513 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 11 treesize of output 7 [2021-11-21 01:46:44,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:44,535 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 33 [2021-11-21 01:46:44,548 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:46:44,565 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:46:44,700 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 11 treesize of output 7 [2021-11-21 01:46:44,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:44,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:44,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:44,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:44,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:44,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:44,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:44,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:44,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:44,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:44,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:44,811 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:46:44,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:44,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:44,817 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:46:44,873 INFO L354 Elim1Store]: treesize reduction 224, result has 12.2 percent of original size [2021-11-21 01:46:44,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 5 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 10 new quantified variables, introduced 14 case distinctions, treesize of input 291 treesize of output 506 [2021-11-21 01:46:45,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:45,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:45,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:45,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:45,058 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:46:45,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:45,063 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:46:45,073 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-21 01:46:45,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 157 treesize of output 95 [2021-11-21 01:46:45,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:45,113 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:46:45,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:45,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:45,119 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:46:45,120 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:46:45,131 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-21 01:46:45,132 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 120 treesize of output 66 [2021-11-21 01:46:45,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:45,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:45,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:45,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:45,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:45,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:45,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:45,296 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:46:45,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:45,300 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:46:45,311 INFO L354 Elim1Store]: treesize reduction 52, result has 1.9 percent of original size [2021-11-21 01:46:45,312 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 167 treesize of output 100 [2021-11-21 01:46:45,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:45,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:45,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:45,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:45,336 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:46:45,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:45,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:45,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:45,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:45,344 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:46:45,373 INFO L354 Elim1Store]: treesize reduction 39, result has 26.4 percent of original size [2021-11-21 01:46:45,373 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 350 treesize of output 221 [2021-11-21 01:46:45,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:45,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:45,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:45,432 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:46:45,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:45,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:45,436 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:46:45,443 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-21 01:46:45,443 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 155 treesize of output 69 [2021-11-21 01:46:45,597 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 11 treesize of output 7 [2021-11-21 01:46:45,614 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:46:45,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:45,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:45,641 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:46:45,647 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:46:45,648 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 49 [2021-11-21 01:46:45,667 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:46:45,987 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:46:46,205 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:46:46,205 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-21 01:46:46,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2021-11-21 01:46:46,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897473360] [2021-11-21 01:46:46,206 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-21 01:46:46,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 01:46:46,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:46:46,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 01:46:46,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-11-21 01:46:46,207 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:46:46,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:46:46,335 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2021-11-21 01:46:46,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:46:46,336 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-21 01:46:46,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:46:46,336 INFO L225 Difference]: With dead ends: 28 [2021-11-21 01:46:46,336 INFO L226 Difference]: Without dead ends: 26 [2021-11-21 01:46:46,337 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-11-21 01:46:46,338 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 19 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:46:46,338 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 18 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:46:46,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-11-21 01:46:46,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 14. [2021-11-21 01:46:46,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:46:46,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2021-11-21 01:46:46,343 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 9 [2021-11-21 01:46:46,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:46:46,343 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 17 transitions. [2021-11-21 01:46:46,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:46:46,343 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2021-11-21 01:46:46,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-21 01:46:46,344 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:46:46,344 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:46:46,382 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54cb4b2-c6a1-491d-becc-0a06205e9977/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-21 01:46:46,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54cb4b2-c6a1-491d-becc-0a06205e9977/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:46:46,559 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:46:46,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:46:46,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1258946262, now seen corresponding path program 2 times [2021-11-21 01:46:46,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:46:46,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772015011] [2021-11-21 01:46:46,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:46:46,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:46:46,589 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:46:46,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1131962173] [2021-11-21 01:46:46,590 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 01:46:46,590 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:46:46,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54cb4b2-c6a1-491d-becc-0a06205e9977/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:46:46,591 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54cb4b2-c6a1-491d-becc-0a06205e9977/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:46:46,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54cb4b2-c6a1-491d-becc-0a06205e9977/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-21 01:46:46,642 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-21 01:46:46,643 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:46:46,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-21 01:46:46,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:46:46,692 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:46:46,692 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:46:46,726 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:46:46,726 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:46:46,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772015011] [2021-11-21 01:46:46,726 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:46:46,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131962173] [2021-11-21 01:46:46,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1131962173] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:46:46,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [53971454] [2021-11-21 01:46:46,729 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-21 01:46:46,729 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:46:46,729 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:46:46,730 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:46:46,730 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:46:46,958 INFO L354 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2021-11-21 01:46:46,958 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 44 treesize of output 77 [2021-11-21 01:46:47,011 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 39 [2021-11-21 01:46:47,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:47,150 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 26 treesize of output 28 [2021-11-21 01:46:47,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:47,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:47,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:47,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:47,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:47,320 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:46:47,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:47,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:47,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:47,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:47,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:47,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:47,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:47,421 INFO L354 Elim1Store]: treesize reduction 266, result has 12.2 percent of original size [2021-11-21 01:46:47,421 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 5 stores, 5 select indices, 5 select index equivalence classes, 12 disjoint index pairs (out of 10 index pairs), introduced 10 new quantified variables, introduced 15 case distinctions, treesize of input 488 treesize of output 652 [2021-11-21 01:46:47,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:47,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:47,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:47,633 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:46:47,635 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 51 [2021-11-21 01:46:47,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:47,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:47,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:47,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:47,836 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 110 treesize of output 65 [2021-11-21 01:46:48,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:48,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:48,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:48,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:48,073 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 372 treesize of output 267 [2021-11-21 01:46:48,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:48,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:48,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:48,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:48,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:48,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:48,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:48,211 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:46:48,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:48,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:48,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:48,228 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-11-21 01:46:48,229 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 608 treesize of output 490 [2021-11-21 01:46:48,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:48,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:48,887 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:46:48,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:48,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:48,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:48,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:48,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:48,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:48,932 INFO L354 Elim1Store]: treesize reduction 31, result has 31.1 percent of original size [2021-11-21 01:46:48,933 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 14 case distinctions, treesize of input 436 treesize of output 326 [2021-11-21 01:46:49,585 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 11 treesize of output 7 [2021-11-21 01:46:49,599 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:46:49,613 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:46:49,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:49,623 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 33 [2021-11-21 01:46:49,703 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 11 treesize of output 7 [2021-11-21 01:46:49,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:49,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:49,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:49,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:49,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:49,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:49,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:49,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:49,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:49,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:49,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:49,828 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:46:49,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:49,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:49,831 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:46:49,908 INFO L354 Elim1Store]: treesize reduction 224, result has 12.2 percent of original size [2021-11-21 01:46:49,908 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 5 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 10 new quantified variables, introduced 14 case distinctions, treesize of input 288 treesize of output 503 [2021-11-21 01:46:50,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:50,109 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:46:50,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:50,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:50,113 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:46:50,113 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:46:50,122 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-21 01:46:50,122 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 137 treesize of output 83 [2021-11-21 01:46:50,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:50,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:50,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:50,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:50,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:50,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:50,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:50,234 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:46:50,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:50,236 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:46:50,249 INFO L354 Elim1Store]: treesize reduction 52, result has 1.9 percent of original size [2021-11-21 01:46:50,249 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 184 treesize of output 117 [2021-11-21 01:46:50,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:50,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:50,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:50,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:50,363 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:46:50,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:50,365 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:46:50,371 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-21 01:46:50,372 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 368 treesize of output 228 [2021-11-21 01:46:50,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:50,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:50,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:50,506 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:46:50,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:50,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:50,517 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:46:50,527 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-21 01:46:50,528 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 644 treesize of output 412 [2021-11-21 01:46:50,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:50,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:50,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:50,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:50,633 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:46:50,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:50,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:50,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:50,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:50,640 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:46:50,667 INFO L354 Elim1Store]: treesize reduction 39, result has 26.4 percent of original size [2021-11-21 01:46:50,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 421 treesize of output 255 [2021-11-21 01:46:50,837 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:46:50,849 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:46:50,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:50,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:50,868 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:46:50,872 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:46:50,873 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 49 [2021-11-21 01:46:50,890 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 11 treesize of output 7 [2021-11-21 01:46:51,136 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:46:51,345 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:46:51,346 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-21 01:46:51,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2021-11-21 01:46:51,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129934236] [2021-11-21 01:46:51,346 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-21 01:46:51,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-21 01:46:51,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:46:51,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-21 01:46:51,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-11-21 01:46:51,347 INFO L87 Difference]: Start difference. First operand 14 states and 17 transitions. Second operand has 8 states, 8 states have (on average 1.625) internal successors, (13), 8 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) [2021-11-21 01:46:51,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:46:51,448 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2021-11-21 01:46:51,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:46:51,448 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-21 01:46:51,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:46:51,449 INFO L225 Difference]: With dead ends: 35 [2021-11-21 01:46:51,449 INFO L226 Difference]: Without dead ends: 23 [2021-11-21 01:46:51,450 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2021-11-21 01:46:51,451 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 14 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:46:51,451 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 18 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:46:51,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-11-21 01:46:51,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 13. [2021-11-21 01:46:51,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 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) [2021-11-21 01:46:51,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2021-11-21 01:46:51,456 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 10 [2021-11-21 01:46:51,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:46:51,456 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2021-11-21 01:46:51,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 8 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) [2021-11-21 01:46:51,457 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2021-11-21 01:46:51,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-21 01:46:51,457 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:46:51,457 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:46:51,489 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54cb4b2-c6a1-491d-becc-0a06205e9977/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-21 01:46:51,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54cb4b2-c6a1-491d-becc-0a06205e9977/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:46:51,675 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:46:51,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:46:51,675 INFO L85 PathProgramCache]: Analyzing trace with hash 2034389572, now seen corresponding path program 3 times [2021-11-21 01:46:51,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:46:51,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762102922] [2021-11-21 01:46:51,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:46:51,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:46:51,727 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:46:51,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [909444945] [2021-11-21 01:46:51,727 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-21 01:46:51,727 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:46:51,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54cb4b2-c6a1-491d-becc-0a06205e9977/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:46:51,739 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54cb4b2-c6a1-491d-becc-0a06205e9977/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:46:51,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54cb4b2-c6a1-491d-becc-0a06205e9977/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-21 01:46:51,901 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-21 01:46:51,901 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:46:51,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-21 01:46:51,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:46:51,927 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 11 treesize of output 7 [2021-11-21 01:46:51,970 INFO L354 Elim1Store]: treesize reduction 56, result has 30.9 percent of original size [2021-11-21 01:46:51,970 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 32 treesize of output 40 [2021-11-21 01:46:52,028 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 01:46:52,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:46:53,357 INFO L354 Elim1Store]: treesize reduction 1103, result has 37.2 percent of original size [2021-11-21 01:46:53,357 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 5 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 9 new quantified variables, introduced 31 case distinctions, treesize of input 303 treesize of output 778 [2021-11-21 01:46:53,643 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:46:53,650 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:46:53,651 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:46:53,821 INFO L354 Elim1Store]: treesize reduction 113, result has 32.7 percent of original size [2021-11-21 01:46:53,821 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 206 treesize of output 206 [2021-11-21 01:47:29,092 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:29,093 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:29,094 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:29,095 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:29,096 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:29,096 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:29,098 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 128 treesize of output 81 [2021-11-21 01:47:29,227 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:29,228 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:29,229 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:29,230 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:29,231 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:29,231 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:29,232 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 128 treesize of output 81 [2021-11-21 01:47:29,589 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:29,589 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:29,590 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:29,591 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:29,725 INFO L354 Elim1Store]: treesize reduction 139, result has 15.2 percent of original size [2021-11-21 01:47:29,725 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 174 treesize of output 139 [2021-11-21 01:47:30,054 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:30,054 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:30,055 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:30,056 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:30,150 INFO L354 Elim1Store]: treesize reduction 139, result has 15.2 percent of original size [2021-11-21 01:47:30,151 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 174 treesize of output 139 [2021-11-21 01:47:31,291 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:31,292 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:31,293 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:31,294 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:31,295 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:31,296 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:31,298 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 82 [2021-11-21 01:47:31,618 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:31,619 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:31,620 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:31,621 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:31,622 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:31,623 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:31,625 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 82 [2021-11-21 01:47:32,939 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:32,940 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:32,941 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:32,942 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:32,942 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:32,943 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:32,944 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:32,945 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:32,946 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:32,946 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:32,948 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 290 treesize of output 196 [2021-11-21 01:47:33,023 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:33,024 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:33,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:47:33,027 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:33,027 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:33,028 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:33,028 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:33,030 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 265 treesize of output 182 [2021-11-21 01:47:33,105 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:33,106 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:33,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:47:33,108 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:33,109 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:33,110 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:33,111 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:33,112 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 336 treesize of output 231 [2021-11-21 01:47:33,485 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:33,486 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:33,487 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:33,488 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:33,642 INFO L354 Elim1Store]: treesize reduction 118, result has 28.9 percent of original size [2021-11-21 01:47:33,643 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 265 treesize of output 229 [2021-11-21 01:47:33,827 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:33,828 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:33,829 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:33,830 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:33,969 INFO L354 Elim1Store]: treesize reduction 118, result has 28.9 percent of original size [2021-11-21 01:47:33,969 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 336 treesize of output 278 [2021-11-21 01:47:35,249 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:35,250 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:35,251 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:35,251 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:35,252 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:35,252 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:35,253 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 290 treesize of output 209 [2021-11-21 01:47:35,433 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:35,434 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:35,435 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:35,436 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:35,437 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:35,438 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:35,439 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 215 treesize of output 156 [2021-11-21 01:47:35,573 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:35,574 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:35,575 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:35,576 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:35,577 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:35,577 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:35,579 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 286 treesize of output 205 [2021-11-21 01:47:37,097 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:37,097 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:37,098 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:37,099 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:37,099 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:37,100 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:37,101 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 292 treesize of output 199 [2021-11-21 01:47:37,373 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:37,374 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:37,374 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:37,375 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:37,376 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:37,378 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:37,379 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 221 treesize of output 150 [2021-11-21 01:47:38,697 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:38,698 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:38,699 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:38,700 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:38,701 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:38,702 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:38,703 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:38,704 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:38,705 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:38,706 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:38,709 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 219 treesize of output 147 [2021-11-21 01:47:38,838 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:38,839 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:38,840 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:38,840 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:38,841 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:38,842 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:38,842 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:38,843 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:38,844 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:38,845 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:38,846 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 290 treesize of output 196 [2021-11-21 01:47:39,257 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:39,258 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:39,258 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:39,259 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:39,260 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:39,260 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:39,261 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:39,262 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:39,263 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:39,263 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:39,264 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 240 treesize of output 157 [2021-11-21 01:47:40,734 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:47:40,735 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 566 treesize of output 540 [2021-11-21 01:47:40,818 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:40,818 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:40,819 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:40,820 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 92 [2021-11-21 01:47:40,894 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:40,894 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:40,897 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:40,901 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:40,903 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:40,907 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:40,912 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:40,913 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:40,917 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:41,166 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:47:41,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 9 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 12 case distinctions, treesize of input 332 treesize of output 496 [2021-11-21 01:47:45,695 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:45,710 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:45,711 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:45,711 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:45,712 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:45,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:47:45,717 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 99 treesize of output 68 [2021-11-21 01:47:45,804 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:45,814 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:45,815 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:45,816 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:45,824 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:45,825 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:45,826 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:45,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:47:45,881 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:47:45,881 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 297 treesize of output 357 [2021-11-21 01:47:47,113 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 192 treesize of output 178 [2021-11-21 01:47:47,127 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:47,128 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:47,128 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:47,129 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:47,130 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:47,131 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:47,132 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:47,133 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:47,134 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:47,135 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:47,136 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:47,137 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:47,138 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:47,139 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:47,175 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:47:47,176 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 14 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 1 case distinctions, treesize of input 195 treesize of output 150 [2021-11-21 01:47:47,421 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 190 treesize of output 174 [2021-11-21 01:47:47,434 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:47,442 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:47,443 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:47,444 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:47,444 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:47,445 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:47,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:47:47,448 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:47,448 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:47,449 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 142 treesize of output 92 [2021-11-21 01:47:47,619 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 240 treesize of output 222 [2021-11-21 01:47:47,631 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:47,632 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:47,632 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:47,633 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:47,633 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:47,634 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:47,635 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:47,636 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:47,636 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:47,637 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:47,637 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:47,638 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:47,638 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:47,639 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:47,640 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:47,641 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 239 treesize of output 160 [2021-11-21 01:47:47,933 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 189 treesize of output 175 [2021-11-21 01:47:47,940 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:47,947 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:47,947 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:47,948 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:47,949 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:47,949 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:47,950 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:47,950 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:47,951 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:47,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:47:47,955 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 143 treesize of output 102 [2021-11-21 01:47:48,007 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 238 treesize of output 220 [2021-11-21 01:47:48,025 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:48,025 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:48,026 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:48,027 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:48,028 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:48,029 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:48,029 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:48,030 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:48,031 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:48,032 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:48,032 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:48,033 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:48,034 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:48,034 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:48,035 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:48,035 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:48,036 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:48,037 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:48,037 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:48,038 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:48,039 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:48,040 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 237 treesize of output 157 [2021-11-21 01:47:49,065 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:47:49,066 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 1141 treesize of output 1109 [2021-11-21 01:47:49,152 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:49,154 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:49,155 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:49,156 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 49 [2021-11-21 01:47:49,530 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:49,554 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:49,555 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:49,559 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:49,559 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:49,561 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:49,588 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:47:49,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 139 treesize of output 124 [2021-11-21 01:47:50,973 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:50,975 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:50,975 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:50,990 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:50,990 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:50,991 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:50,992 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:50,999 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:51,000 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:51,005 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:51,016 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:47:51,562 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:47:51,562 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 11 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 17 case distinctions, treesize of input 1381 treesize of output 1478 [2021-11-21 01:48:22,787 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:48:22,790 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 818 treesize of output 784 [2021-11-21 01:48:25,871 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 65 treesize of output 55 [2021-11-21 01:48:25,883 INFO L354 Elim1Store]: treesize reduction 22, result has 4.3 percent of original size [2021-11-21 01:48:25,883 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 55 treesize of output 36 [2021-11-21 01:48:25,915 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:25,921 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:25,927 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:25,983 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:48:25,984 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 185 treesize of output 214 [2021-11-21 01:48:26,272 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:26,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 220 treesize of output 201 [2021-11-21 01:48:26,282 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:26,288 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:26,289 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:26,290 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:26,291 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 178 treesize of output 138 [2021-11-21 01:48:26,352 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-21 01:48:26,353 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:48:26,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762102922] [2021-11-21 01:48:26,353 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:48:26,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909444945] [2021-11-21 01:48:26,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [909444945] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:48:26,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1411133761] [2021-11-21 01:48:26,356 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-21 01:48:26,356 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:48:26,357 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:48:26,357 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:48:26,357 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:48:26,573 INFO L354 Elim1Store]: treesize reduction 97, result has 31.2 percent of original size [2021-11-21 01:48:26,574 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 29 treesize of output 60 [2021-11-21 01:48:26,766 INFO L354 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2021-11-21 01:48:26,766 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 44 treesize of output 77 [2021-11-21 01:48:26,950 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 11 treesize of output 7 [2021-11-21 01:48:26,966 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:48:27,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:27,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:27,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:27,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:27,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:27,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:27,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:27,097 INFO L354 Elim1Store]: treesize reduction 139, result has 9.7 percent of original size [2021-11-21 01:48:27,098 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 5 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 8 new quantified variables, introduced 6 case distinctions, treesize of input 234 treesize of output 344 [2021-11-21 01:48:27,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:27,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:27,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:27,262 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 50 [2021-11-21 01:48:27,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:27,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:27,284 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:27,285 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 177 treesize of output 100 [2021-11-21 01:48:27,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:27,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:27,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:27,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:27,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:27,447 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:48:27,448 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 351 treesize of output 325 [2021-11-21 01:48:27,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:27,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:27,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:27,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:27,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:27,595 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:48:27,595 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 307 treesize of output 232 [2021-11-21 01:48:27,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:27,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:27,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:27,625 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 49 [2021-11-21 01:48:27,835 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 11 treesize of output 7 [2021-11-21 01:48:27,854 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:48:27,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:27,868 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 33 [2021-11-21 01:48:27,976 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 11 treesize of output 7 [2021-11-21 01:48:28,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:28,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:28,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:28,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:28,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:28,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:28,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:28,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:28,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:28,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:28,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:28,117 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:28,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:28,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:28,121 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:28,213 INFO L354 Elim1Store]: treesize reduction 224, result has 12.2 percent of original size [2021-11-21 01:48:28,214 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 5 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 10 new quantified variables, introduced 14 case distinctions, treesize of input 291 treesize of output 506 [2021-11-21 01:48:28,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:28,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:28,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:28,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:28,495 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:28,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:28,499 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:28,518 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-21 01:48:28,519 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 159 treesize of output 97 [2021-11-21 01:48:28,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:28,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:28,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:28,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:28,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:28,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:28,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:28,761 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:28,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:28,764 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:28,780 INFO L354 Elim1Store]: treesize reduction 52, result has 1.9 percent of original size [2021-11-21 01:48:28,780 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 205 treesize of output 134 [2021-11-21 01:48:28,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:28,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:28,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:28,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:28,843 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:28,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:28,847 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:28,864 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-21 01:48:28,864 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 394 treesize of output 279 [2021-11-21 01:48:28,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:28,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:28,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:28,958 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:28,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:28,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:28,963 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:28,973 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-21 01:48:28,974 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 326 treesize of output 188 [2021-11-21 01:48:29,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:29,029 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:29,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:29,031 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:29,032 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:29,039 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-21 01:48:29,039 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 162 treesize of output 84 [2021-11-21 01:48:29,137 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-21 01:48:29,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:29,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:29,151 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:29,155 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:48:29,155 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 49 [2021-11-21 01:48:29,173 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:48:29,193 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:48:29,532 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:48:29,745 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:48:29,745 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-21 01:48:29,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2021-11-21 01:48:29,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351512222] [2021-11-21 01:48:29,746 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-21 01:48:29,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-21 01:48:29,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:48:29,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-21 01:48:29,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2021-11-21 01:48:29,748 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 10 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:48:30,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:48:30,012 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2021-11-21 01:48:30,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-21 01:48:30,013 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-21 01:48:30,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:48:30,014 INFO L225 Difference]: With dead ends: 40 [2021-11-21 01:48:30,014 INFO L226 Difference]: Without dead ends: 38 [2021-11-21 01:48:30,015 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2021-11-21 01:48:30,016 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 34 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:48:30,016 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 30 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 01:48:30,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-11-21 01:48:30,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 17. [2021-11-21 01:48:30,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:48:30,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2021-11-21 01:48:30,023 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 11 [2021-11-21 01:48:30,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:48:30,023 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2021-11-21 01:48:30,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:48:30,023 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2021-11-21 01:48:30,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-21 01:48:30,024 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:48:30,024 INFO L514 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:48:30,051 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54cb4b2-c6a1-491d-becc-0a06205e9977/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-21 01:48:30,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54cb4b2-c6a1-491d-becc-0a06205e9977/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:48:30,235 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:48:30,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:48:30,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1186125732, now seen corresponding path program 4 times [2021-11-21 01:48:30,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:48:30,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89220010] [2021-11-21 01:48:30,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:48:30,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:48:30,268 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:48:30,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1521864439] [2021-11-21 01:48:30,268 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-21 01:48:30,268 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:48:30,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54cb4b2-c6a1-491d-becc-0a06205e9977/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:48:30,270 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54cb4b2-c6a1-491d-becc-0a06205e9977/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:48:30,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54cb4b2-c6a1-491d-becc-0a06205e9977/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-21 01:48:30,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:48:30,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-21 01:48:30,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:48:30,398 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 01:48:30,398 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:48:30,454 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 01:48:30,454 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:48:30,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89220010] [2021-11-21 01:48:30,455 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:48:30,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521864439] [2021-11-21 01:48:30,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1521864439] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:48:30,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1334163027] [2021-11-21 01:48:30,457 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-21 01:48:30,458 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:48:30,458 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:48:30,458 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:48:30,459 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:48:30,607 INFO L354 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2021-11-21 01:48:30,608 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 44 treesize of output 77 [2021-11-21 01:48:30,709 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 39 [2021-11-21 01:48:30,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:30,898 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2021-11-21 01:48:31,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:31,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:31,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:31,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:31,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:31,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:31,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:31,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:31,110 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:31,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:31,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:31,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:31,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:31,232 INFO L354 Elim1Store]: treesize reduction 266, result has 12.2 percent of original size [2021-11-21 01:48:31,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 5 stores, 5 select indices, 5 select index equivalence classes, 12 disjoint index pairs (out of 10 index pairs), introduced 10 new quantified variables, introduced 15 case distinctions, treesize of input 480 treesize of output 644 [2021-11-21 01:48:31,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:31,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:31,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:31,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:31,489 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 112 treesize of output 67 [2021-11-21 01:48:31,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:31,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:31,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:31,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:31,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:31,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:31,547 INFO L354 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2021-11-21 01:48:31,548 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 1 case distinctions, treesize of input 211 treesize of output 109 [2021-11-21 01:48:31,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:31,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:31,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:31,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:31,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:31,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:31,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:31,619 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:31,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:31,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:31,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:31,639 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-11-21 01:48:31,639 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 403 treesize of output 327 [2021-11-21 01:48:32,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:32,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:32,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:32,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:32,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:32,108 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:32,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:32,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:32,116 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:48:32,116 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 299 treesize of output 234 [2021-11-21 01:48:32,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:32,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:32,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:32,831 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:32,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 52 [2021-11-21 01:48:33,560 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 11 treesize of output 7 [2021-11-21 01:48:33,572 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:48:33,585 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:48:33,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:33,597 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 33 [2021-11-21 01:48:33,700 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 11 treesize of output 7 [2021-11-21 01:48:33,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:33,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:33,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:33,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:33,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:33,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:33,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:33,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:33,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:33,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:33,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:33,827 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:33,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:33,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:33,830 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:33,906 INFO L354 Elim1Store]: treesize reduction 224, result has 12.2 percent of original size [2021-11-21 01:48:33,906 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 5 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 10 new quantified variables, introduced 14 case distinctions, treesize of input 291 treesize of output 506 [2021-11-21 01:48:34,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:34,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:34,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:34,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:34,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:34,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:34,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:34,085 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:34,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:34,102 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:34,118 INFO L354 Elim1Store]: treesize reduction 52, result has 1.9 percent of original size [2021-11-21 01:48:34,118 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 203 treesize of output 132 [2021-11-21 01:48:34,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:34,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:34,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:34,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:34,209 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:34,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:34,213 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:34,227 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-21 01:48:34,227 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 227 treesize of output 129 [2021-11-21 01:48:34,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:34,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:34,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:34,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:34,526 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:34,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:34,531 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:34,550 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-21 01:48:34,551 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 454 treesize of output 332 [2021-11-21 01:48:34,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:34,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:34,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:34,700 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:34,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:34,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:34,706 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:34,718 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-21 01:48:34,718 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 388 treesize of output 287 [2021-11-21 01:48:34,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:34,803 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:34,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:34,807 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:34,808 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:34,817 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-21 01:48:34,818 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 194 treesize of output 102 [2021-11-21 01:48:35,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:35,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:35,045 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:35,049 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:48:35,050 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 49 [2021-11-21 01:48:35,064 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:48:35,091 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 11 treesize of output 7 [2021-11-21 01:48:35,410 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:48:35,618 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:48:35,619 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-21 01:48:35,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-11-21 01:48:35,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797754249] [2021-11-21 01:48:35,619 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-21 01:48:35,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-21 01:48:35,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:48:35,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-21 01:48:35,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2021-11-21 01:48:35,620 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand has 11 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:48:35,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:48:35,801 INFO L93 Difference]: Finished difference Result 54 states and 62 transitions. [2021-11-21 01:48:35,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-21 01:48:35,801 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-21 01:48:35,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:48:35,802 INFO L225 Difference]: With dead ends: 54 [2021-11-21 01:48:35,802 INFO L226 Difference]: Without dead ends: 43 [2021-11-21 01:48:35,803 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2021-11-21 01:48:35,804 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 46 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:48:35,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 30 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:48:35,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-11-21 01:48:35,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 26. [2021-11-21 01:48:35,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.24) internal successors, (31), 25 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) [2021-11-21 01:48:35,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2021-11-21 01:48:35,811 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 13 [2021-11-21 01:48:35,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:48:35,811 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2021-11-21 01:48:35,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:48:35,812 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2021-11-21 01:48:35,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-21 01:48:35,812 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:48:35,812 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:48:35,836 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54cb4b2-c6a1-491d-becc-0a06205e9977/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-21 01:48:36,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54cb4b2-c6a1-491d-becc-0a06205e9977/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-21 01:48:36,013 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:48:36,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:48:36,014 INFO L85 PathProgramCache]: Analyzing trace with hash 221349744, now seen corresponding path program 1 times [2021-11-21 01:48:36,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:48:36,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061785220] [2021-11-21 01:48:36,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:48:36,014 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:48:36,039 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:48:36,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [516297339] [2021-11-21 01:48:36,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:48:36,040 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:48:36,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54cb4b2-c6a1-491d-becc-0a06205e9977/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:48:36,041 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54cb4b2-c6a1-491d-becc-0a06205e9977/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:48:36,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54cb4b2-c6a1-491d-becc-0a06205e9977/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-21 01:48:36,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:48:36,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-21 01:48:36,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:48:36,231 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 10 treesize of output 8 [2021-11-21 01:48:36,256 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-21 01:48:36,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:36,280 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 22 [2021-11-21 01:48:36,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:36,353 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 32 [2021-11-21 01:48:36,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:36,390 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:36,396 INFO L354 Elim1Store]: treesize reduction 28, result has 20.0 percent of original size [2021-11-21 01:48:36,397 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 56 treesize of output 49 [2021-11-21 01:48:36,613 INFO L354 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2021-11-21 01:48:36,613 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 68 treesize of output 40 [2021-11-21 01:48:36,631 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:48:36,631 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:48:40,692 INFO L354 Elim1Store]: treesize reduction 559, result has 31.0 percent of original size [2021-11-21 01:48:40,693 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 5 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 7 new quantified variables, introduced 16 case distinctions, treesize of input 275 treesize of output 401 [2021-11-21 01:48:41,133 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:41,134 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:41,202 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:48:41,203 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 65 [2021-11-21 01:48:42,126 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:42,127 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:42,127 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:42,127 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:42,128 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:42,253 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:48:42,253 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 434 treesize of output 399 [2021-11-21 01:48:43,048 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:43,048 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:43,049 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:43,049 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:43,050 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:43,051 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:43,051 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:43,054 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:43,181 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:48:43,181 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 395 treesize of output 351 [2021-11-21 01:48:43,954 INFO L354 Elim1Store]: treesize reduction 107, result has 11.6 percent of original size [2021-11-21 01:48:43,955 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 415 treesize of output 329 [2021-11-21 01:48:44,022 INFO L354 Elim1Store]: treesize reduction 174, result has 13.4 percent of original size [2021-11-21 01:48:44,022 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 411 treesize of output 334 [2021-11-21 01:48:44,578 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:48:44,578 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:48:44,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061785220] [2021-11-21 01:48:44,578 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:48:44,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516297339] [2021-11-21 01:48:44,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516297339] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:48:44,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [858086347] [2021-11-21 01:48:44,583 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-21 01:48:44,583 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:48:44,583 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:48:44,583 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:48:44,583 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:48:44,768 INFO L354 Elim1Store]: treesize reduction 97, result has 31.2 percent of original size [2021-11-21 01:48:44,769 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 29 treesize of output 60 [2021-11-21 01:48:44,929 INFO L354 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2021-11-21 01:48:44,929 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 44 treesize of output 77 [2021-11-21 01:48:45,069 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 11 treesize of output 7 [2021-11-21 01:48:45,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:45,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:45,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:45,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:45,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:45,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:45,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:45,172 INFO L354 Elim1Store]: treesize reduction 139, result has 9.7 percent of original size [2021-11-21 01:48:45,172 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 5 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 8 new quantified variables, introduced 6 case distinctions, treesize of input 234 treesize of output 344 [2021-11-21 01:48:45,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:45,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:45,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:45,303 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 50 [2021-11-21 01:48:45,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:45,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:45,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:45,386 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 175 treesize of output 99 [2021-11-21 01:48:45,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:45,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:45,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:45,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:45,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:45,493 INFO L354 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2021-11-21 01:48:45,493 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 367 treesize of output 282 [2021-11-21 01:48:45,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:45,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:45,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:45,578 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 250 treesize of output 173 [2021-11-21 01:48:45,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:45,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:45,634 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:45,639 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:48:45,639 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 93 treesize of output 55 [2021-11-21 01:48:45,788 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 11 treesize of output 7 [2021-11-21 01:48:45,800 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:48:45,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:45,809 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 33 [2021-11-21 01:48:45,823 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:48:45,989 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 11 treesize of output 7 [2021-11-21 01:48:46,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:46,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:46,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:46,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:46,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:46,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:46,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:46,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:46,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:46,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:46,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:46,094 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:46,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:46,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:46,097 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:46,162 INFO L354 Elim1Store]: treesize reduction 224, result has 12.2 percent of original size [2021-11-21 01:48:46,163 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 5 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 10 new quantified variables, introduced 14 case distinctions, treesize of input 291 treesize of output 506 [2021-11-21 01:48:46,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:46,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:46,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:46,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:46,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:46,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:46,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:46,358 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:46,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:46,360 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:46,377 INFO L354 Elim1Store]: treesize reduction 52, result has 1.9 percent of original size [2021-11-21 01:48:46,378 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 186 treesize of output 119 [2021-11-21 01:48:46,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:46,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:46,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:46,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:46,546 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:46,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:46,549 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:46,563 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-21 01:48:46,563 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 279 treesize of output 181 [2021-11-21 01:48:46,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:46,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:46,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:46,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:46,752 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:46,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:46,757 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:46,767 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-21 01:48:46,767 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 570 treesize of output 448 [2021-11-21 01:48:46,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:46,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:46,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:46,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:46,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:46,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:46,906 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:46,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:46,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:46,910 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:46,920 INFO L354 Elim1Store]: treesize reduction 52, result has 1.9 percent of original size [2021-11-21 01:48:46,920 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 400 treesize of output 321 [2021-11-21 01:48:47,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:47,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:47,004 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:47,005 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:47,006 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:47,020 INFO L354 Elim1Store]: treesize reduction 25, result has 10.7 percent of original size [2021-11-21 01:48:47,020 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 177 treesize of output 102 [2021-11-21 01:48:47,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:47,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:47,146 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:47,150 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:48:47,151 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 49 [2021-11-21 01:48:47,163 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:48:47,179 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:48:47,195 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 11 treesize of output 7 [2021-11-21 01:48:48,218 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:48:48,812 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:48:48,812 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-21 01:48:48,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-11-21 01:48:48,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157363067] [2021-11-21 01:48:48,813 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-21 01:48:48,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-21 01:48:48,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:48:48,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-21 01:48:48,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=517, Unknown=0, NotChecked=0, Total=600 [2021-11-21 01:48:48,814 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 19 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 19 states have internal predecessors, (25), 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) [2021-11-21 01:48:51,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:48:51,012 INFO L93 Difference]: Finished difference Result 48 states and 57 transitions. [2021-11-21 01:48:51,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-21 01:48:51,014 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 19 states have internal predecessors, (25), 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 [2021-11-21 01:48:51,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:48:51,014 INFO L225 Difference]: With dead ends: 48 [2021-11-21 01:48:51,015 INFO L226 Difference]: Without dead ends: 38 [2021-11-21 01:48:51,015 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=126, Invalid=744, Unknown=0, NotChecked=0, Total=870 [2021-11-21 01:48:51,016 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 3 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 14 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-21 01:48:51,017 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 23 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 91 Invalid, 0 Unknown, 14 Unchecked, 0.8s Time] [2021-11-21 01:48:51,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-11-21 01:48:51,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2021-11-21 01:48:51,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 33 states have internal predecessors, (42), 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) [2021-11-21 01:48:51,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2021-11-21 01:48:51,026 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 14 [2021-11-21 01:48:51,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:48:51,026 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2021-11-21 01:48:51,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 19 states have internal predecessors, (25), 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) [2021-11-21 01:48:51,027 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2021-11-21 01:48:51,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-21 01:48:51,028 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:48:51,028 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:48:51,081 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54cb4b2-c6a1-491d-becc-0a06205e9977/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-21 01:48:51,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54cb4b2-c6a1-491d-becc-0a06205e9977/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:48:51,255 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:48:51,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:48:51,255 INFO L85 PathProgramCache]: Analyzing trace with hash -211311242, now seen corresponding path program 5 times [2021-11-21 01:48:51,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:48:51,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731776630] [2021-11-21 01:48:51,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:48:51,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:48:51,302 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:48:51,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1909942254] [2021-11-21 01:48:51,309 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 01:48:51,309 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:48:51,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54cb4b2-c6a1-491d-becc-0a06205e9977/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:48:51,310 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54cb4b2-c6a1-491d-becc-0a06205e9977/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:48:51,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54cb4b2-c6a1-491d-becc-0a06205e9977/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-21 01:48:51,490 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-21 01:48:51,490 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:48:51,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-21 01:48:51,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:48:51,580 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:48:51,580 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:48:51,667 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:48:51,667 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:48:51,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731776630] [2021-11-21 01:48:51,668 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:48:51,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909942254] [2021-11-21 01:48:51,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1909942254] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:48:51,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [734415905] [2021-11-21 01:48:51,670 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-21 01:48:51,670 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:48:51,670 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:48:51,670 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:48:51,671 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:48:51,899 INFO L354 Elim1Store]: treesize reduction 97, result has 31.2 percent of original size [2021-11-21 01:48:51,899 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 29 treesize of output 60 [2021-11-21 01:48:52,110 INFO L354 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2021-11-21 01:48:52,110 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 44 treesize of output 77 [2021-11-21 01:48:52,212 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 11 treesize of output 7 [2021-11-21 01:48:52,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:52,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:52,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:52,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:52,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:52,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:52,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:52,310 INFO L354 Elim1Store]: treesize reduction 139, result has 9.7 percent of original size [2021-11-21 01:48:52,311 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 5 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 8 new quantified variables, introduced 6 case distinctions, treesize of input 234 treesize of output 344 [2021-11-21 01:48:52,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:52,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:52,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:52,435 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 50 [2021-11-21 01:48:52,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:52,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:52,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:52,460 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 49 [2021-11-21 01:48:52,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:52,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:52,563 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:52,564 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 35 [2021-11-21 01:48:52,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:52,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:52,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:52,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:52,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:52,649 INFO L354 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2021-11-21 01:48:52,650 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 289 treesize of output 199 [2021-11-21 01:48:52,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:52,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:52,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:52,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:52,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:52,730 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:48:52,730 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 214 treesize of output 136 [2021-11-21 01:48:52,909 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 11 treesize of output 7 [2021-11-21 01:48:52,917 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:48:52,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:52,927 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 33 [2021-11-21 01:48:52,950 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:48:53,061 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 11 treesize of output 7 [2021-11-21 01:48:53,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:53,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:53,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:53,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:53,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:53,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:53,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:53,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:53,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:53,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:53,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:53,142 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:53,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:53,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:53,145 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:53,206 INFO L354 Elim1Store]: treesize reduction 224, result has 12.2 percent of original size [2021-11-21 01:48:53,206 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 5 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 10 new quantified variables, introduced 14 case distinctions, treesize of input 291 treesize of output 506 [2021-11-21 01:48:53,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:53,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:53,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:53,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:53,434 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:53,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:53,437 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:53,451 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-21 01:48:53,452 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 159 treesize of output 97 [2021-11-21 01:48:53,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:53,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:53,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:53,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:53,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:53,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:53,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:53,481 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:53,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:53,484 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:53,494 INFO L354 Elim1Store]: treesize reduction 52, result has 1.9 percent of original size [2021-11-21 01:48:53,495 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 422 treesize of output 268 [2021-11-21 01:48:53,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:53,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:53,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:53,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:53,612 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:53,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:53,615 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:53,623 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-21 01:48:53,623 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 155 treesize of output 93 [2021-11-21 01:48:53,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:53,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:53,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:53,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:53,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:53,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:53,725 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:53,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:53,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:53,731 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:53,744 INFO L354 Elim1Store]: treesize reduction 52, result has 1.9 percent of original size [2021-11-21 01:48:53,744 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 343 treesize of output 263 [2021-11-21 01:48:53,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:53,838 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:53,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:53,840 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:53,841 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:53,847 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-21 01:48:53,847 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 162 treesize of output 84 [2021-11-21 01:48:54,007 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 11 treesize of output 7 [2021-11-21 01:48:54,043 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:48:54,066 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:48:54,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:54,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:54,088 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:54,094 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:48:54,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 49 [2021-11-21 01:48:54,407 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:48:54,609 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:48:54,609 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-21 01:48:54,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-11-21 01:48:54,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932344290] [2021-11-21 01:48:54,610 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-21 01:48:54,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-21 01:48:54,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:48:54,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-21 01:48:54,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2021-11-21 01:48:54,611 INFO L87 Difference]: Start difference. First operand 34 states and 42 transitions. Second operand has 14 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 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) [2021-11-21 01:48:54,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:48:54,981 INFO L93 Difference]: Finished difference Result 79 states and 87 transitions. [2021-11-21 01:48:54,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-21 01:48:54,982 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 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) Word has length 14 [2021-11-21 01:48:54,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:48:54,983 INFO L225 Difference]: With dead ends: 79 [2021-11-21 01:48:54,983 INFO L226 Difference]: Without dead ends: 65 [2021-11-21 01:48:54,984 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=140, Invalid=460, Unknown=0, NotChecked=0, Total=600 [2021-11-21 01:48:54,985 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 77 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:48:54,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 48 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 01:48:54,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-11-21 01:48:54,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 34. [2021-11-21 01:48:54,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.2121212121212122) internal successors, (40), 33 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) [2021-11-21 01:48:54,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2021-11-21 01:48:54,999 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 14 [2021-11-21 01:48:54,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:48:54,999 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2021-11-21 01:48:54,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 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) [2021-11-21 01:48:55,000 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2021-11-21 01:48:55,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-21 01:48:55,001 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:48:55,001 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:48:55,025 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54cb4b2-c6a1-491d-becc-0a06205e9977/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-21 01:48:55,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54cb4b2-c6a1-491d-becc-0a06205e9977/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:48:55,207 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:48:55,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:48:55,207 INFO L85 PathProgramCache]: Analyzing trace with hash -582184476, now seen corresponding path program 6 times [2021-11-21 01:48:55,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:48:55,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299067794] [2021-11-21 01:48:55,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:48:55,208 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:48:55,258 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:48:55,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [764306700] [2021-11-21 01:48:55,265 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-21 01:48:55,265 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:48:55,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54cb4b2-c6a1-491d-becc-0a06205e9977/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:48:55,266 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54cb4b2-c6a1-491d-becc-0a06205e9977/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:48:55,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54cb4b2-c6a1-491d-becc-0a06205e9977/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-21 01:48:55,980 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-21 01:48:55,980 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:48:55,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-21 01:48:55,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:48:56,047 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 11 treesize of output 7 [2021-11-21 01:48:56,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:56,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:56,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:56,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:56,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:56,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:56,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:56,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:56,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:56,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:56,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:56,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:56,099 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:56,099 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:56,101 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:56,112 INFO L354 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2021-11-21 01:48:56,113 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 249 treesize of output 417 [2021-11-21 01:48:56,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:56,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:56,213 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:56,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:56,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:56,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:56,218 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:56,219 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:56,232 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-21 01:48:56,232 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 182 treesize of output 115 [2021-11-21 01:48:56,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:56,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:56,292 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:56,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:56,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:56,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:56,298 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:56,298 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:56,308 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-21 01:48:56,309 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 182 treesize of output 115 [2021-11-21 01:48:56,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:56,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:56,359 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:56,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:56,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:56,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:56,363 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:56,363 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:56,367 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-21 01:48:56,368 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 200 treesize of output 96 [2021-11-21 01:48:56,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:56,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:56,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:56,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:56,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:56,424 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:56,428 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-21 01:48:56,429 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 56 treesize of output 54 [2021-11-21 01:48:56,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:56,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:56,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:56,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:56,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:56,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:56,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:56,478 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:56,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:56,479 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:48:56,484 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-21 01:48:56,485 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 81 treesize of output 75 [2021-11-21 01:48:58,609 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:48:58,610 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 6 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 100 treesize of output 68 [2021-11-21 01:48:58,634 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 01:48:58,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:51:41,682 WARN L227 SmtUtils]: Spent 2.51m on a formula simplification. DAG size of input: 255 DAG size of output: 152 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-21 01:51:41,682 INFO L354 Elim1Store]: treesize reduction 1103, result has 37.2 percent of original size [2021-11-21 01:51:41,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 5 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 9 new quantified variables, introduced 31 case distinctions, treesize of input 1622 treesize of output 2097 [2021-11-21 01:51:48,526 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:51:48,527 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:51:48,527 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:51:48,528 INFO L244 Elim1Store]: Index analysis took 434 ms [2021-11-21 01:52:08,632 WARN L227 SmtUtils]: Spent 17.52s on a formula simplification. DAG size of input: 51 DAG size of output: 33 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-21 01:52:08,633 INFO L354 Elim1Store]: treesize reduction 113, result has 32.7 percent of original size [2021-11-21 01:52:08,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 206 treesize of output 206 [2021-11-21 01:52:15,089 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:52:15,089 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:52:15,107 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:52:15,109 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:52:15,109 INFO L244 Elim1Store]: Index analysis took 283 ms [2021-11-21 01:52:50,437 WARN L227 SmtUtils]: Spent 33.08s on a formula simplification. DAG size of input: 50 DAG size of output: 30 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-21 01:52:50,438 INFO L354 Elim1Store]: treesize reduction 112, result has 31.7 percent of original size [2021-11-21 01:52:50,438 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 420 treesize of output 333 [2021-11-21 01:53:10,394 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:53:10,395 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:53:10,397 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:53:10,397 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:53:10,397 INFO L244 Elim1Store]: Index analysis took 318 ms [2021-11-21 01:53:41,286 WARN L227 SmtUtils]: Spent 29.01s on a formula simplification. DAG size of input: 50 DAG size of output: 30 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-21 01:53:41,287 INFO L354 Elim1Store]: treesize reduction 112, result has 31.7 percent of original size [2021-11-21 01:53:41,287 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 420 treesize of output 333 [2021-11-21 01:54:40,704 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:54:40,705 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:54:40,706 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:54:40,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:54:40,738 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:54:40,739 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:54:40,740 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:54:40,742 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 374 treesize of output 249 [2021-11-21 01:54:49,095 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:54:49,096 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:54:49,096 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:54:49,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:54:49,324 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:54:49,325 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:54:49,325 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:54:49,326 INFO L244 Elim1Store]: Index analysis took 236 ms [2021-11-21 01:54:49,328 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 374 treesize of output 249 [2021-11-21 01:55:32,825 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:55:32,826 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:55:32,830 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:55:32,831 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:55:32,832 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:55:32,833 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:55:32,834 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 374 treesize of output 262 [2021-11-21 01:55:43,946 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:55:43,947 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:55:43,952 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:55:43,953 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:55:43,956 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:55:43,957 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:55:43,959 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 374 treesize of output 262 [2021-11-21 01:55:50,923 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:55:50,924 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:55:50,930 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:55:50,931 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:55:50,933 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:55:50,933 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:55:50,935 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 326 treesize of output 227 [2021-11-21 01:55:59,399 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:55:59,400 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:55:59,406 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:55:59,407 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:55:59,410 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:55:59,411 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:55:59,413 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 326 treesize of output 227 [2021-11-21 01:56:43,667 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:56:43,671 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:56:43,671 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:56:43,672 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:56:43,673 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:56:43,676 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:56:43,682 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:56:43,683 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:56:43,685 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:56:43,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:56:43,728 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 374 treesize of output 249 [2021-11-21 01:56:45,622 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:56:45,628 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:56:45,628 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:56:45,629 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:56:45,629 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:56:45,637 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:56:45,642 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:56:45,643 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:56:45,644 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:56:45,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:56:45,677 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 374 treesize of output 249 [2021-11-21 01:57:38,590 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:57:38,666 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-11-21 01:57:44,668 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:57:44,818 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-11-21 01:58:15,293 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:58:15,439 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-11-21 01:59:15,083 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:59:15,083 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 6127 treesize of output 5537 [2021-11-21 01:59:15,364 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:59:15,365 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:59:15,366 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:59:15,367 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:59:15,368 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:59:15,370 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:59:15,372 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:59:15,373 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:59:15,376 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:59:15,378 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:59:15,380 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 3271 treesize of output 2494 [2021-11-21 01:59:20,014 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:59:20,015 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:59:20,016 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:59:20,016 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:59:20,017 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:59:20,020 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:59:20,022 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:59:20,023 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:59:20,029 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:59:20,031 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:59:20,032 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 2974 treesize of output 2275 [2021-11-21 01:59:28,816 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:59:28,817 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:59:28,818 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:59:28,819 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:59:28,820 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:59:28,824 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:59:28,826 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:59:28,827 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:59:28,831 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:59:28,833 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:59:28,834 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 2974 treesize of output 2275 [2021-11-21 01:59:35,572 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:59:35,573 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:59:35,575 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:59:35,576 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:59:35,577 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:59:35,580 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:59:35,581 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:59:35,582 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:59:35,585 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:59:35,586 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:59:35,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 2427 treesize of output 1862 [2021-11-21 01:59:43,254 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:59:43,255 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:59:43,256 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:59:43,256 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:59:43,257 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:59:43,259 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:59:43,260 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:59:43,261 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:59:43,262 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:59:43,264 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:59:43,265 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 2427 treesize of output 1862 [2021-11-21 01:59:51,247 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:59:51,249 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:59:51,251 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:59:51,285 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:59:51,286 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:59:51,287 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:59:51,295 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:59:51,296 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:59:51,297 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:59:51,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:51,406 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:59:51,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 405 treesize of output 426 [2021-11-21 01:59:57,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:57,297 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:59:57,297 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:59:57,298 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:59:57,312 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 503 treesize of output 457 [2021-11-21 01:59:57,324 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:59:57,328 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:59:57,330 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:59:57,342 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:59:57,343 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:59:57,344 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:59:57,344 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:59:57,345 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:59:57,346 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:59:57,347 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:59:57,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:57,355 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:59:57,357 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 221 treesize of output 135 [2021-11-21 02:00:03,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:03,911 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 02:00:03,912 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 02:00:03,913 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 02:00:03,930 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 549 treesize of output 503 [2021-11-21 02:00:03,943 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 02:00:03,948 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 02:00:03,957 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 02:00:03,969 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 02:00:03,971 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 02:00:03,971 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 02:00:03,972 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 02:00:03,973 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 02:00:03,974 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 02:00:03,975 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 02:00:03,975 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 02:00:03,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:03,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 267 treesize of output 182