./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-tiling/poly1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb362fcc-f940-4591-b70e-5c99b52f0163/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb362fcc-f940-4591-b70e-5c99b52f0163/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb362fcc-f940-4591-b70e-5c99b52f0163/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb362fcc-f940-4591-b70e-5c99b52f0163/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-tiling/poly1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb362fcc-f940-4591-b70e-5c99b52f0163/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb362fcc-f940-4591-b70e-5c99b52f0163/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3116e607f032f81b099fa1792f5e25b70e1832d9d57f1b8b6500e90d2143faec --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:15:01,259 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:15:01,263 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:15:01,320 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:15:01,321 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:15:01,326 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:15:01,328 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:15:01,333 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:15:01,336 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:15:01,342 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:15:01,344 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:15:01,346 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:15:01,347 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:15:01,350 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:15:01,352 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:15:01,358 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:15:01,360 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:15:01,361 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:15:01,364 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:15:01,373 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:15:01,376 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:15:01,378 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:15:01,382 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:15:01,384 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:15:01,394 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:15:01,394 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:15:01,395 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:15:01,397 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:15:01,398 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:15:01,400 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:15:01,401 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:15:01,402 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:15:01,404 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:15:01,406 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:15:01,407 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:15:01,408 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:15:01,409 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:15:01,409 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:15:01,409 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:15:01,410 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:15:01,411 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:15:01,412 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb362fcc-f940-4591-b70e-5c99b52f0163/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:15:01,461 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:15:01,461 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:15:01,463 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:15:01,464 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:15:01,464 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:15:01,464 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:15:01,464 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:15:01,465 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:15:01,471 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:15:01,472 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:15:01,473 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:15:01,473 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:15:01,474 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:15:01,474 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:15:01,474 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:15:01,475 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:15:01,475 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:15:01,475 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:15:01,476 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:15:01,476 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:15:01,476 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:15:01,476 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:15:01,477 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:15:01,477 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:15:01,477 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:15:01,477 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:15:01,477 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:15:01,478 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:15:01,478 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:15:01,479 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:15:01,480 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:15:01,480 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:15:01,480 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:15:01,481 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:15:01,481 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:15:01,481 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:15:01,481 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:15:01,481 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:15:01,482 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:15:01,482 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_bb362fcc-f940-4591-b70e-5c99b52f0163/bin/utaipan-UUZaoUuFF8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb362fcc-f940-4591-b70e-5c99b52f0163/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3116e607f032f81b099fa1792f5e25b70e1832d9d57f1b8b6500e90d2143faec [2021-11-07 01:15:01,821 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:15:01,854 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:15:01,858 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:15:01,859 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:15:01,860 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:15:01,861 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb362fcc-f940-4591-b70e-5c99b52f0163/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/array-tiling/poly1.c [2021-11-07 01:15:01,948 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb362fcc-f940-4591-b70e-5c99b52f0163/bin/utaipan-UUZaoUuFF8/data/275336d96/f35ef716c82949268fb0390090b69ccc/FLAG11403bbab [2021-11-07 01:15:02,460 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:15:02,461 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb362fcc-f940-4591-b70e-5c99b52f0163/sv-benchmarks/c/array-tiling/poly1.c [2021-11-07 01:15:02,468 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb362fcc-f940-4591-b70e-5c99b52f0163/bin/utaipan-UUZaoUuFF8/data/275336d96/f35ef716c82949268fb0390090b69ccc/FLAG11403bbab [2021-11-07 01:15:02,822 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb362fcc-f940-4591-b70e-5c99b52f0163/bin/utaipan-UUZaoUuFF8/data/275336d96/f35ef716c82949268fb0390090b69ccc [2021-11-07 01:15:02,825 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:15:02,827 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:15:02,829 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:15:02,829 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:15:02,833 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:15:02,834 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:15:02" (1/1) ... [2021-11-07 01:15:02,836 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@decee00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:15:02, skipping insertion in model container [2021-11-07 01:15:02,836 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:15:02" (1/1) ... [2021-11-07 01:15:02,859 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:15:02,875 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:15:03,075 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb362fcc-f940-4591-b70e-5c99b52f0163/sv-benchmarks/c/array-tiling/poly1.c[396,409] [2021-11-07 01:15:03,091 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:15:03,101 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:15:03,113 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb362fcc-f940-4591-b70e-5c99b52f0163/sv-benchmarks/c/array-tiling/poly1.c[396,409] [2021-11-07 01:15:03,118 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:15:03,134 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:15:03,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:15:03 WrapperNode [2021-11-07 01:15:03,135 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:15:03,136 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:15:03,136 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:15:03,137 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:15:03,145 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:15:03" (1/1) ... [2021-11-07 01:15:03,153 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:15:03" (1/1) ... [2021-11-07 01:15:03,173 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:15:03,174 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:15:03,174 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:15:03,174 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:15:03,184 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:15:03" (1/1) ... [2021-11-07 01:15:03,184 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:15:03" (1/1) ... [2021-11-07 01:15:03,186 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:15:03" (1/1) ... [2021-11-07 01:15:03,186 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:15:03" (1/1) ... [2021-11-07 01:15:03,192 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:15:03" (1/1) ... [2021-11-07 01:15:03,196 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:15:03" (1/1) ... [2021-11-07 01:15:03,197 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:15:03" (1/1) ... [2021-11-07 01:15:03,199 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:15:03,200 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:15:03,201 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:15:03,201 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:15:03,202 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:15:03" (1/1) ... [2021-11-07 01:15:03,210 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:15:03,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb362fcc-f940-4591-b70e-5c99b52f0163/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:15:03,242 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb362fcc-f940-4591-b70e-5c99b52f0163/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:15:03,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb362fcc-f940-4591-b70e-5c99b52f0163/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:15:03,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 01:15:03,289 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:15:03,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 01:15:03,289 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:15:03,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:15:03,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:15:03,290 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 01:15:03,629 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:15:03,630 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-11-07 01:15:03,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:15:03 BoogieIcfgContainer [2021-11-07 01:15:03,632 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:15:03,634 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:15:03,634 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:15:03,638 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:15:03,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:15:02" (1/3) ... [2021-11-07 01:15:03,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1638cb45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:15:03, skipping insertion in model container [2021-11-07 01:15:03,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:15:03" (2/3) ... [2021-11-07 01:15:03,640 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1638cb45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:15:03, skipping insertion in model container [2021-11-07 01:15:03,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:15:03" (3/3) ... [2021-11-07 01:15:03,641 INFO L111 eAbstractionObserver]: Analyzing ICFG poly1.c [2021-11-07 01:15:03,647 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:15:03,648 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 01:15:03,701 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:15:03,708 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 01:15:03,709 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 01:15:03,723 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.625) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:03,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-07 01:15:03,728 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:15:03,729 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-07 01:15:03,730 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:15:03,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:15:03,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1912434953, now seen corresponding path program 1 times [2021-11-07 01:15:03,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:15:03,763 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805991294] [2021-11-07 01:15:03,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:15:03,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:15:03,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:15:04,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:15:04,023 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:15:04,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805991294] [2021-11-07 01:15:04,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805991294] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:15:04,025 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:15:04,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 01:15:04,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318902616] [2021-11-07 01:15:04,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:15:04,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:15:04,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:15:04,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:15:04,051 INFO L87 Difference]: Start difference. First operand has 10 states, 8 states have (on average 1.625) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:04,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:15:04,086 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2021-11-07 01:15:04,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:15:04,088 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-07 01:15:04,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:15:04,097 INFO L225 Difference]: With dead ends: 18 [2021-11-07 01:15:04,097 INFO L226 Difference]: Without dead ends: 9 [2021-11-07 01:15:04,100 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:15:04,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-11-07 01:15:04,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-11-07 01:15:04,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:04,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2021-11-07 01:15:04,132 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2021-11-07 01:15:04,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:15:04,133 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2021-11-07 01:15:04,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:04,134 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2021-11-07 01:15:04,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-07 01:15:04,134 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:15:04,135 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:15:04,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 01:15:04,135 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:15:04,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:15:04,137 INFO L85 PathProgramCache]: Analyzing trace with hash 840302022, now seen corresponding path program 1 times [2021-11-07 01:15:04,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:15:04,137 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251334388] [2021-11-07 01:15:04,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:15:04,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:15:04,157 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 01:15:04,158 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1029879224] [2021-11-07 01:15:04,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:15:04,159 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:15:04,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb362fcc-f940-4591-b70e-5c99b52f0163/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:15:04,161 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb362fcc-f940-4591-b70e-5c99b52f0163/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:15:04,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb362fcc-f940-4591-b70e-5c99b52f0163/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 01:15:04,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:15:04,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:15:04,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:15:04,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:15:04,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:15:04,445 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:15:04,446 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:15:04,446 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251334388] [2021-11-07 01:15:04,446 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 01:15:04,447 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029879224] [2021-11-07 01:15:04,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029879224] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:15:04,447 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1954214870] [2021-11-07 01:15:04,472 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2021-11-07 01:15:04,472 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 01:15:04,478 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 01:15:04,485 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 01:15:04,485 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 01:15:04,522 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:04,527 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:15:04,528 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:04,528 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 01:15:04,533 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:15:04,534 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:04,535 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 01:15:04,539 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 130 [2021-11-07 01:15:04,564 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_12|], 21=[|v_#valid_13|]} [2021-11-07 01:15:04,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:04,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:04,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:04,594 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-07 01:15:04,595 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:04,596 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:15:04,597 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:04,598 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:15:04,599 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:15:04,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:15:04,636 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:04,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:04,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:04,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:04,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:04,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:04,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:04,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:04,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:04,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:04,666 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-07 01:15:04,667 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:04,671 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 01:15:04,672 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:04,673 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 01:15:04,674 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 01:15:04,674 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:15:04,694 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:04,697 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:04,700 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 102 [2021-11-07 01:15:04,701 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:15:04,701 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:127, output treesize:102 [2021-11-07 01:15:04,713 INFO L180 QuantifierPusher]: treesize reduction 5, result has 96.5 percent of original size [2021-11-07 01:15:04,715 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:15:04,732 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:04,733 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-07 01:15:04,735 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:15:04,736 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:04,737 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-07 01:15:04,742 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 139 [2021-11-07 01:15:04,752 INFO L446 ElimStorePlain]: Different costs {6=[|v_#length_13|], 15=[|v_#valid_14|]} [2021-11-07 01:15:04,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:04,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:04,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:04,786 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-07 01:15:04,787 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 32 [2021-11-07 01:15:04,788 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:04,791 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-07 01:15:04,800 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:04,801 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-07 01:15:04,801 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:15:04,802 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:15:04,845 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:04,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:04,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:04,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:04,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:04,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:04,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:04,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 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 32 treesize of output 41 [2021-11-07 01:15:04,868 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:04,875 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-07 01:15:04,877 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:04,878 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-07 01:15:04,879 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 01:15:04,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:15:04,896 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:04,908 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:04,917 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 128 [2021-11-07 01:15:04,918 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:15:04,919 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:135, output treesize:128 [2021-11-07 01:15:04,928 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:04,935 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:15:04,937 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:04,939 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:15:04,939 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:04,940 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-11-07 01:15:04,942 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:15:04,943 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:04,944 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-07 01:15:04,946 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-07 01:15:04,948 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:15:04,949 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:04,951 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-11-07 01:15:04,955 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 206 [2021-11-07 01:15:04,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:04,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:04,990 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 42 treesize of output 44 [2021-11-07 01:15:04,993 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:04,996 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-07 01:15:04,997 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:04,998 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-07 01:15:04,999 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:15:05,010 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-07 01:15:05,011 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:05,011 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 01:15:05,012 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:05,013 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 01:15:05,013 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 01:15:05,014 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:15:05,024 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:05,028 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:05,033 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 163 [2021-11-07 01:15:05,034 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:15:05,034 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:337, output treesize:163 [2021-11-07 01:15:05,041 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:15:05,069 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:15:05,099 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:15:05,158 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:05,184 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:15:05,197 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:05,207 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:15:05,214 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:05,217 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:15:05,218 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:05,219 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-11-07 01:15:05,221 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:15:05,222 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:05,223 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-07 01:15:05,230 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 348 [2021-11-07 01:15:05,231 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:15:05,237 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:05,244 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 320 [2021-11-07 01:15:05,253 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:15:05,260 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:05,263 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:15:05,264 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:05,265 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-11-07 01:15:05,267 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:15:05,268 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:05,269 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-11-07 01:15:05,276 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 350 [2021-11-07 01:15:05,277 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:15:05,284 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:05,294 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 321 [2021-11-07 01:15:05,319 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 661 [2021-11-07 01:15:05,319 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:15:05,331 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:05,344 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 364 [2021-11-07 01:15:05,358 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 434 [2021-11-07 01:15:05,388 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-07 01:15:05,388 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:05,389 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 01:15:05,390 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:05,390 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 01:15:05,390 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:15:05,410 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-07 01:15:05,410 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:05,411 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 01:15:05,411 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:05,412 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 01:15:05,412 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 01:15:05,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:05,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:05,438 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 42 treesize of output 44 [2021-11-07 01:15:05,439 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:05,442 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-07 01:15:05,443 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:05,444 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-07 01:15:05,444 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-11-07 01:15:05,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:05,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:05,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:05,472 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 68 [2021-11-07 01:15:05,473 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:05,476 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-07 01:15:05,478 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:05,479 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-07 01:15:05,479 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-11-07 01:15:05,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:15:05,537 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:05,581 INFO L180 QuantifierPusher]: treesize reduction 111, result has 77.2 percent of original size [2021-11-07 01:15:05,595 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 375 [2021-11-07 01:15:05,596 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-07 01:15:05,597 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 1 variables, input treesize:991, output treesize:375 [2021-11-07 01:15:05,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:15:05,657 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:15:05,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:15:05,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:15:05,663 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:15:05,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:15:05,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:15:05,689 INFO L180 QuantifierPusher]: treesize reduction 42, result has 71.4 percent of original size [2021-11-07 01:15:05,692 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:15:05,693 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:05,693 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-07 01:15:05,694 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:15:05,695 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:05,695 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-07 01:15:05,698 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-11-07 01:15:05,711 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-11-07 01:15:05,712 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:05,712 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 01:15:05,713 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:05,713 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 01:15:05,714 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:15:05,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:15:05,721 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:05,728 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-07 01:15:05,729 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:05,729 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 01:15:05,730 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:05,730 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 01:15:05,731 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 01:15:05,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:15:05,734 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:05,736 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:05,737 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-11-07 01:15:05,738 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:15:05,738 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:163, output treesize:76 [2021-11-07 01:15:05,745 INFO L180 QuantifierPusher]: treesize reduction 43, result has 53.8 percent of original size [2021-11-07 01:15:05,747 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-11-07 01:15:05,753 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 01:15:06,278 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 01:15:06,278 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:15:06,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-11-07 01:15:06,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338768734] [2021-11-07 01:15:06,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:15:06,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:15:06,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:15:06,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:15:06,282 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:06,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:15:06,312 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2021-11-07 01:15:06,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:15:06,312 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 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 [2021-11-07 01:15:06,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:15:06,313 INFO L225 Difference]: With dead ends: 15 [2021-11-07 01:15:06,314 INFO L226 Difference]: Without dead ends: 10 [2021-11-07 01:15:06,315 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:15:06,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-11-07 01:15:06,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-11-07 01:15:06,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:06,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2021-11-07 01:15:06,318 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 7 [2021-11-07 01:15:06,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:15:06,318 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2021-11-07 01:15:06,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:06,319 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2021-11-07 01:15:06,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 01:15:06,320 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:15:06,320 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2021-11-07 01:15:06,356 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb362fcc-f940-4591-b70e-5c99b52f0163/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-07 01:15:06,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb362fcc-f940-4591-b70e-5c99b52f0163/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:15:06,536 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:15:06,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:15:06,537 INFO L85 PathProgramCache]: Analyzing trace with hash 275802327, now seen corresponding path program 2 times [2021-11-07 01:15:06,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:15:06,537 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595024402] [2021-11-07 01:15:06,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:15:06,538 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:15:06,560 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 01:15:06,560 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [602209109] [2021-11-07 01:15:06,560 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 01:15:06,561 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:15:06,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb362fcc-f940-4591-b70e-5c99b52f0163/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:15:06,577 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb362fcc-f940-4591-b70e-5c99b52f0163/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:15:06,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb362fcc-f940-4591-b70e-5c99b52f0163/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 01:15:06,659 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-07 01:15:06,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:15:06,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-07 01:15:06,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:15:06,688 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-07 01:15:06,722 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-07 01:15:06,722 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2021-11-07 01:15:06,835 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:15:06,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:15:07,063 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:07,063 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 79 treesize of output 79 [2021-11-07 01:15:07,101 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 6 [2021-11-07 01:15:07,145 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 6 [2021-11-07 01:15:07,199 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 65 [2021-11-07 01:15:07,223 INFO L354 Elim1Store]: treesize reduction 39, result has 23.5 percent of original size [2021-11-07 01:15:07,224 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 82 treesize of output 75 [2021-11-07 01:15:29,889 WARN L207 SmtUtils]: Spent 7.72 s on a formula simplification that was a NOOP. DAG size: 19 [2021-11-07 01:15:29,895 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:15:29,895 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:15:29,896 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595024402] [2021-11-07 01:15:29,896 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 01:15:29,896 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602209109] [2021-11-07 01:15:29,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602209109] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:15:29,896 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1547554120] [2021-11-07 01:15:29,900 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2021-11-07 01:15:29,900 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 01:15:29,900 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 01:15:29,900 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 01:15:29,901 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 01:15:29,906 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:29,907 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:15:29,908 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:29,908 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 01:15:29,909 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:15:29,910 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:29,911 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 01:15:29,913 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 130 [2021-11-07 01:15:29,916 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_15|], 21=[|v_#valid_16|]} [2021-11-07 01:15:29,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:29,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:29,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:29,930 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-07 01:15:29,930 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:29,931 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:15:29,932 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:29,933 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:15:29,933 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:15:29,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:15:29,938 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:29,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:29,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:29,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:29,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:29,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:29,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:29,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:29,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:29,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:29,961 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-07 01:15:29,962 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:29,964 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 01:15:29,965 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:29,968 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 01:15:29,968 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 01:15:29,969 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:15:29,973 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:29,975 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:29,977 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 102 [2021-11-07 01:15:29,978 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:15:29,978 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:127, output treesize:102 [2021-11-07 01:15:29,985 INFO L180 QuantifierPusher]: treesize reduction 5, result has 96.5 percent of original size [2021-11-07 01:15:29,987 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:15:29,987 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:29,989 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-07 01:15:29,990 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:15:29,991 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:29,992 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-07 01:15:29,994 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 139 [2021-11-07 01:15:29,997 INFO L446 ElimStorePlain]: Different costs {6=[|v_#length_16|], 15=[|v_#valid_17|]} [2021-11-07 01:15:30,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:30,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:30,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:30,017 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-07 01:15:30,018 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 32 [2021-11-07 01:15:30,022 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:30,024 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-07 01:15:30,024 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:30,026 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-07 01:15:30,034 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:15:30,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:15:30,041 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:30,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:30,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:30,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:30,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:30,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:30,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:30,057 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 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 32 treesize of output 41 [2021-11-07 01:15:30,058 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:30,061 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-07 01:15:30,062 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:30,062 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-07 01:15:30,063 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 01:15:30,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:15:30,069 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:30,071 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:30,073 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 128 [2021-11-07 01:15:30,074 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:15:30,074 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:135, output treesize:128 [2021-11-07 01:15:30,079 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:30,081 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:15:30,082 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:30,083 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-07 01:15:30,086 INFO L185 QuantifierPusher]: treesize reduction 3, result has 97.9 percent of original size 141 [2021-11-07 01:15:30,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:30,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:30,100 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2021-11-07 01:15:30,101 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:30,102 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-07 01:15:30,103 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:30,104 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-07 01:15:30,104 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:15:30,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:15:30,111 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:30,114 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-11-07 01:15:30,116 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 135 [2021-11-07 01:15:30,117 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:15:30,117 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:142, output treesize:135 [2021-11-07 01:15:30,121 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:15:30,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:15:30,153 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:15:30,184 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:30,196 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:15:30,201 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:30,203 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:15:30,204 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:30,205 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:15:30,206 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:30,207 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 01:15:30,208 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:15:30,208 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:30,209 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-11-07 01:15:30,210 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-11-07 01:15:30,211 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:15:30,211 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:30,212 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-11-07 01:15:30,214 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:15:30,215 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:30,216 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:15:30,217 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:30,218 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-07 01:15:30,218 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:15:30,219 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:30,220 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-11-07 01:15:30,221 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-07 01:15:30,222 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:15:30,223 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:30,223 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-11-07 01:15:30,229 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 410 [2021-11-07 01:15:30,229 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:15:30,233 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:30,237 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 338 [2021-11-07 01:15:30,243 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 408 [2021-11-07 01:15:30,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:30,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:30,273 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 42 treesize of output 44 [2021-11-07 01:15:30,274 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:30,275 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-07 01:15:30,276 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:30,277 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-07 01:15:30,277 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:15:30,289 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-07 01:15:30,290 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:30,290 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 01:15:30,291 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:30,291 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 01:15:30,292 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 01:15:30,304 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-07 01:15:30,304 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:30,305 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 01:15:30,305 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:30,306 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 01:15:30,306 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-11-07 01:15:30,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:30,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:30,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:30,326 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 54 [2021-11-07 01:15:30,327 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:30,329 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-07 01:15:30,329 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:30,330 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-07 01:15:30,330 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-11-07 01:15:30,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:15:30,372 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:30,387 INFO L180 QuantifierPusher]: treesize reduction 108, result has 76.5 percent of original size [2021-11-07 01:15:30,392 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 352 [2021-11-07 01:15:30,393 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-07 01:15:30,394 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 1 variables, input treesize:939, output treesize:352 [2021-11-07 01:15:30,400 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:15:30,438 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:15:30,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:15:30,441 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:15:30,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:15:30,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:15:30,449 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:15:30,458 INFO L180 QuantifierPusher]: treesize reduction 42, result has 71.4 percent of original size [2021-11-07 01:15:30,460 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:15:30,460 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:30,461 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-07 01:15:30,461 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:15:30,462 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:30,462 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-07 01:15:30,464 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-11-07 01:15:30,474 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-11-07 01:15:30,475 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:30,475 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 01:15:30,476 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:30,476 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 01:15:30,476 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:15:30,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:15:30,482 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:30,488 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-07 01:15:30,489 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:30,489 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 01:15:30,490 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:30,490 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 01:15:30,491 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 01:15:30,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:15:30,493 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:30,495 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:30,496 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-11-07 01:15:30,497 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:15:30,497 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:163, output treesize:76 [2021-11-07 01:15:30,502 INFO L180 QuantifierPusher]: treesize reduction 43, result has 53.8 percent of original size [2021-11-07 01:15:30,505 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-11-07 01:15:30,510 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 01:15:33,596 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 01:15:33,596 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:15:33,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2021-11-07 01:15:33,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195979495] [2021-11-07 01:15:33,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 01:15:33,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:15:33,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 01:15:33,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=184, Unknown=1, NotChecked=0, Total=240 [2021-11-07 01:15:33,598 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand has 11 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:36,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:15:36,649 INFO L93 Difference]: Finished difference Result 53 states and 58 transitions. [2021-11-07 01:15:36,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-07 01:15:36,650 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 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 8 [2021-11-07 01:15:36,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:15:36,651 INFO L225 Difference]: With dead ends: 53 [2021-11-07 01:15:36,651 INFO L226 Difference]: Without dead ends: 51 [2021-11-07 01:15:36,652 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=129, Invalid=422, Unknown=1, NotChecked=0, Total=552 [2021-11-07 01:15:36,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-11-07 01:15:36,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 17. [2021-11-07 01:15:36,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:36,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2021-11-07 01:15:36,658 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 8 [2021-11-07 01:15:36,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:15:36,658 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2021-11-07 01:15:36,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:36,658 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2021-11-07 01:15:36,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-07 01:15:36,659 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:15:36,659 INFO L513 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2021-11-07 01:15:36,681 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb362fcc-f940-4591-b70e-5c99b52f0163/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:15:36,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb362fcc-f940-4591-b70e-5c99b52f0163/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:15:36,864 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:15:36,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:15:36,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1362146633, now seen corresponding path program 3 times [2021-11-07 01:15:36,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:15:36,866 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105082162] [2021-11-07 01:15:36,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:15:36,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:15:36,892 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 01:15:36,893 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2005707552] [2021-11-07 01:15:36,893 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 01:15:36,894 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:15:36,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb362fcc-f940-4591-b70e-5c99b52f0163/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:15:36,895 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb362fcc-f940-4591-b70e-5c99b52f0163/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:15:36,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb362fcc-f940-4591-b70e-5c99b52f0163/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-07 01:15:37,049 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 01:15:37,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:15:37,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-07 01:15:37,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:15:37,072 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 [2021-11-07 01:15:37,132 INFO L354 Elim1Store]: treesize reduction 78, result has 16.1 percent of original size [2021-11-07 01:15:37,132 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 76 treesize of output 84 [2021-11-07 01:15:37,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:37,153 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 34 treesize of output 17 [2021-11-07 01:15:37,262 INFO L354 Elim1Store]: treesize reduction 220, result has 17.0 percent of original size [2021-11-07 01:15:37,263 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 99 treesize of output 125 [2021-11-07 01:15:37,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:37,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:37,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:37,290 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 57 treesize of output 28 [2021-11-07 01:15:37,382 INFO L354 Elim1Store]: treesize reduction 104, result has 20.0 percent of original size [2021-11-07 01:15:37,382 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 39 treesize of output 44 [2021-11-07 01:15:37,516 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:15:37,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:15:38,184 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:38,184 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 113 treesize of output 113 [2021-11-07 01:15:38,259 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 6 [2021-11-07 01:15:38,469 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 6 [2021-11-07 01:15:38,533 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 99 [2021-11-07 01:15:38,606 INFO L354 Elim1Store]: treesize reduction 39, result has 23.5 percent of original size [2021-11-07 01:15:38,607 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 2224 treesize of output 2203 [2021-11-07 01:15:40,322 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:15:40,322 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:15:40,322 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105082162] [2021-11-07 01:15:40,322 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 01:15:40,322 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005707552] [2021-11-07 01:15:40,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005707552] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:15:40,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1396841082] [2021-11-07 01:15:40,325 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2021-11-07 01:15:40,325 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 01:15:40,326 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 01:15:40,326 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 01:15:40,326 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 01:15:40,344 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:40,344 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:15:40,345 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:40,345 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 01:15:40,346 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:15:40,347 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:40,347 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 01:15:40,349 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 130 [2021-11-07 01:15:40,353 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_18|], 21=[|v_#valid_19|]} [2021-11-07 01:15:40,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:40,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:40,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:40,365 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-07 01:15:40,365 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:40,366 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:15:40,366 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:40,367 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:15:40,368 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:15:40,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:15:40,377 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:40,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:40,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:40,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:40,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:40,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:40,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:40,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:40,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:40,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:40,396 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-07 01:15:40,396 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:40,399 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 01:15:40,399 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:40,400 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 01:15:40,400 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 01:15:40,400 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:15:40,405 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:40,406 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:40,407 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 102 [2021-11-07 01:15:40,408 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:15:40,408 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:127, output treesize:102 [2021-11-07 01:15:40,414 INFO L180 QuantifierPusher]: treesize reduction 5, result has 96.5 percent of original size [2021-11-07 01:15:40,415 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:15:40,415 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:40,420 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-07 01:15:40,420 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:15:40,422 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:40,422 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-07 01:15:40,428 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 139 [2021-11-07 01:15:40,438 INFO L446 ElimStorePlain]: Different costs {6=[|v_#length_19|], 15=[|v_#valid_20|]} [2021-11-07 01:15:40,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:40,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:40,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:40,462 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-07 01:15:40,462 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 32 [2021-11-07 01:15:40,463 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:40,465 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-07 01:15:40,465 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:40,466 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-07 01:15:40,466 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:15:40,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:15:40,481 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:40,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:40,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:40,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:40,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:40,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:40,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:40,499 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 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 32 treesize of output 41 [2021-11-07 01:15:40,500 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:40,502 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-07 01:15:40,503 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:40,504 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-07 01:15:40,504 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 01:15:40,505 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:15:40,512 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:40,513 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:40,515 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 128 [2021-11-07 01:15:40,516 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:15:40,516 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:135, output treesize:128 [2021-11-07 01:15:40,520 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:40,532 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:15:40,533 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:40,533 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:15:40,534 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:40,535 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-11-07 01:15:40,536 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:15:40,536 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:40,537 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-07 01:15:40,539 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-07 01:15:40,539 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:15:40,540 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:40,541 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-11-07 01:15:40,543 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 206 [2021-11-07 01:15:40,554 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-07 01:15:40,555 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:40,556 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 01:15:40,556 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:40,557 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 01:15:40,558 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:15:40,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:40,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:40,568 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 42 treesize of output 44 [2021-11-07 01:15:40,569 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:40,571 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-07 01:15:40,572 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:40,572 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-07 01:15:40,573 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 01:15:40,573 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:15:40,579 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:40,581 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:40,583 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 163 [2021-11-07 01:15:40,584 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:15:40,584 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:337, output treesize:163 [2021-11-07 01:15:40,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:15:40,609 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:15:40,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:15:40,669 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:40,683 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:15:40,698 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:40,703 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:15:40,707 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:40,708 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:15:40,709 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:40,710 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-11-07 01:15:40,710 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:15:40,711 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:40,712 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-11-07 01:15:40,716 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 350 [2021-11-07 01:15:40,717 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:15:40,720 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:40,724 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 321 [2021-11-07 01:15:40,729 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:15:40,734 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:40,738 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:15:40,739 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:40,739 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-11-07 01:15:40,740 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:15:40,741 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:40,743 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-07 01:15:40,748 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 348 [2021-11-07 01:15:40,748 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:15:40,752 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:40,756 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 320 [2021-11-07 01:15:40,763 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 661 [2021-11-07 01:15:40,763 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:15:40,767 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:40,771 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 364 [2021-11-07 01:15:40,777 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 434 [2021-11-07 01:15:40,797 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-07 01:15:40,797 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:40,798 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 01:15:40,798 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:40,799 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 01:15:40,799 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:15:40,809 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-07 01:15:40,810 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:40,811 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 01:15:40,812 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:40,812 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 01:15:40,812 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 01:15:40,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:40,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:40,831 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 42 treesize of output 44 [2021-11-07 01:15:40,832 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:40,833 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-07 01:15:40,834 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:40,835 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-07 01:15:40,835 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-11-07 01:15:40,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:40,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:40,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:40,854 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 68 [2021-11-07 01:15:40,855 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:40,857 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-07 01:15:40,858 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:40,859 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-07 01:15:40,860 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-11-07 01:15:40,861 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:15:40,901 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:40,919 INFO L180 QuantifierPusher]: treesize reduction 111, result has 77.2 percent of original size [2021-11-07 01:15:40,924 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 375 [2021-11-07 01:15:40,926 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-07 01:15:40,926 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 1 variables, input treesize:991, output treesize:375 [2021-11-07 01:15:40,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:15:40,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:15:40,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:15:40,983 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:15:40,985 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:15:40,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:15:40,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:15:41,000 INFO L180 QuantifierPusher]: treesize reduction 42, result has 71.4 percent of original size [2021-11-07 01:15:41,001 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:15:41,002 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:41,002 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-07 01:15:41,003 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:15:41,003 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:41,004 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-07 01:15:41,005 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-11-07 01:15:41,013 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-07 01:15:41,014 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:41,014 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 01:15:41,015 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:41,015 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 01:15:41,016 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:15:41,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:15:41,020 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:41,025 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-11-07 01:15:41,026 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:41,026 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 01:15:41,026 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:41,027 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 01:15:41,028 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 01:15:41,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:15:41,031 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:41,032 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:41,033 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-11-07 01:15:41,034 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:15:41,034 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:163, output treesize:76 [2021-11-07 01:15:41,041 INFO L180 QuantifierPusher]: treesize reduction 43, result has 53.8 percent of original size [2021-11-07 01:15:41,043 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-11-07 01:15:41,050 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 01:15:41,624 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 01:15:41,625 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:15:41,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-11-07 01:15:41,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673308312] [2021-11-07 01:15:41,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-07 01:15:41,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:15:41,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-07 01:15:41,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2021-11-07 01:15:41,626 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 15 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:44,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:15:44,214 INFO L93 Difference]: Finished difference Result 90 states and 101 transitions. [2021-11-07 01:15:44,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-07 01:15:44,215 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 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 10 [2021-11-07 01:15:44,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:15:44,216 INFO L225 Difference]: With dead ends: 90 [2021-11-07 01:15:44,217 INFO L226 Difference]: Without dead ends: 88 [2021-11-07 01:15:44,217 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=268, Invalid=854, Unknown=0, NotChecked=0, Total=1122 [2021-11-07 01:15:44,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-11-07 01:15:44,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 27. [2021-11-07 01:15:44,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 26 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:44,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2021-11-07 01:15:44,225 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 34 transitions. Word has length 10 [2021-11-07 01:15:44,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:15:44,226 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 34 transitions. [2021-11-07 01:15:44,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:44,226 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions. [2021-11-07 01:15:44,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-07 01:15:44,226 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:15:44,227 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:15:44,253 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb362fcc-f940-4591-b70e-5c99b52f0163/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:15:44,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb362fcc-f940-4591-b70e-5c99b52f0163/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-11-07 01:15:44,444 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:15:44,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:15:44,445 INFO L85 PathProgramCache]: Analyzing trace with hash 262396842, now seen corresponding path program 1 times [2021-11-07 01:15:44,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:15:44,445 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507909920] [2021-11-07 01:15:44,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:15:44,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:15:44,465 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 01:15:44,465 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [665015955] [2021-11-07 01:15:44,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:15:44,466 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:15:44,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb362fcc-f940-4591-b70e-5c99b52f0163/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:15:44,467 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb362fcc-f940-4591-b70e-5c99b52f0163/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:15:44,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb362fcc-f940-4591-b70e-5c99b52f0163/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-07 01:15:44,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:15:44,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-07 01:15:44,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:15:44,613 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 13 treesize of output 9 [2021-11-07 01:15:44,642 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-07 01:15:44,642 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-11-07 01:15:44,763 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:15:44,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:15:45,280 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:45,280 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 81 treesize of output 81 [2021-11-07 01:15:45,454 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 6 [2021-11-07 01:15:45,650 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 6 [2021-11-07 01:15:45,820 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 67 [2021-11-07 01:15:45,954 INFO L354 Elim1Store]: treesize reduction 43, result has 21.8 percent of original size [2021-11-07 01:15:45,955 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 79 [2021-11-07 01:15:46,937 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:15:46,938 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:15:46,938 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507909920] [2021-11-07 01:15:46,938 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 01:15:46,938 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [665015955] [2021-11-07 01:15:46,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [665015955] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:15:46,938 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [702288207] [2021-11-07 01:15:46,940 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-07 01:15:46,940 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 01:15:46,941 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 01:15:46,941 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 01:15:46,941 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 01:15:46,946 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:46,947 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:15:46,947 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:46,948 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 01:15:46,948 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:15:46,948 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:46,949 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 01:15:46,950 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 130 [2021-11-07 01:15:46,952 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_21|], 21=[|v_#valid_22|]} [2021-11-07 01:15:46,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:46,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:46,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:46,963 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-07 01:15:46,964 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:46,964 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:15:46,965 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:46,965 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:15:46,966 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:15:46,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:15:46,970 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:46,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:46,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:46,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:46,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:46,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:46,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:46,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:46,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:46,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:46,989 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-07 01:15:46,989 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:46,991 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 01:15:46,992 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:46,992 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 01:15:46,992 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 01:15:46,993 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:15:46,996 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:46,998 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:47,000 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 102 [2021-11-07 01:15:47,000 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:15:47,000 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:127, output treesize:102 [2021-11-07 01:15:47,006 INFO L180 QuantifierPusher]: treesize reduction 5, result has 96.5 percent of original size [2021-11-07 01:15:47,007 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:15:47,008 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:47,009 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-07 01:15:47,009 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:15:47,010 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:47,010 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-07 01:15:47,017 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 139 [2021-11-07 01:15:47,020 INFO L446 ElimStorePlain]: Different costs {6=[|v_#length_22|], 15=[|v_#valid_23|]} [2021-11-07 01:15:47,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:47,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:47,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:47,051 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-07 01:15:47,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 32 [2021-11-07 01:15:47,052 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:47,054 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-07 01:15:47,055 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:47,055 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-07 01:15:47,055 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:15:47,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:15:47,061 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:47,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:47,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:47,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:47,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:47,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:47,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:47,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 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 32 treesize of output 41 [2021-11-07 01:15:47,083 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:47,085 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-07 01:15:47,086 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:47,086 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-07 01:15:47,086 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 01:15:47,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:15:47,093 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:47,095 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:47,096 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 128 [2021-11-07 01:15:47,097 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:15:47,097 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:135, output treesize:128 [2021-11-07 01:15:47,102 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:47,103 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:15:47,104 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:47,105 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-07 01:15:47,107 INFO L185 QuantifierPusher]: treesize reduction 3, result has 97.9 percent of original size 141 [2021-11-07 01:15:47,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:47,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:47,120 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2021-11-07 01:15:47,120 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:47,122 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-07 01:15:47,122 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:47,123 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-07 01:15:47,123 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:15:47,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:15:47,130 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:47,133 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-11-07 01:15:47,135 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 135 [2021-11-07 01:15:47,136 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:15:47,136 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:142, output treesize:135 [2021-11-07 01:15:47,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:15:47,154 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:15:47,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:15:47,206 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:47,217 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:15:47,222 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:47,224 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:15:47,225 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:47,226 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:15:47,227 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:47,228 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 01:15:47,228 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:15:47,229 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:47,229 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-11-07 01:15:47,230 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-11-07 01:15:47,231 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:15:47,231 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:47,232 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-11-07 01:15:47,233 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:15:47,234 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:47,235 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:15:47,235 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:47,236 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-07 01:15:47,236 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:15:47,237 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:47,237 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-11-07 01:15:47,238 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-07 01:15:47,239 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:15:47,239 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:47,240 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-11-07 01:15:47,244 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 410 [2021-11-07 01:15:47,244 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:15:47,247 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:47,251 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 338 [2021-11-07 01:15:47,255 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 408 [2021-11-07 01:15:47,271 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-07 01:15:47,271 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:47,272 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 01:15:47,272 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:47,273 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 01:15:47,273 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:15:47,283 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-07 01:15:47,283 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:47,284 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 01:15:47,284 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:47,284 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 01:15:47,285 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 01:15:47,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:47,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:47,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:47,309 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 54 [2021-11-07 01:15:47,309 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:47,311 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-07 01:15:47,312 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:47,312 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-07 01:15:47,312 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-11-07 01:15:47,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:47,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:47,330 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 42 treesize of output 44 [2021-11-07 01:15:47,331 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:47,332 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-07 01:15:47,333 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:47,334 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-07 01:15:47,334 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-11-07 01:15:47,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:15:47,368 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:47,387 INFO L180 QuantifierPusher]: treesize reduction 108, result has 76.5 percent of original size [2021-11-07 01:15:47,391 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 352 [2021-11-07 01:15:47,392 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-07 01:15:47,393 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 1 variables, input treesize:939, output treesize:352 [2021-11-07 01:15:47,400 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:15:47,446 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:15:47,447 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:15:47,449 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:15:47,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:15:47,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:15:47,457 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:15:47,464 INFO L180 QuantifierPusher]: treesize reduction 42, result has 71.4 percent of original size [2021-11-07 01:15:47,466 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:15:47,466 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:47,467 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-07 01:15:47,467 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:15:47,467 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:47,468 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-07 01:15:47,470 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-11-07 01:15:47,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-11-07 01:15:47,481 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:47,482 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 01:15:47,482 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:47,483 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 01:15:47,483 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:15:47,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:15:47,488 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:47,494 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-07 01:15:47,495 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:47,495 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 01:15:47,495 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:47,496 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 01:15:47,496 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 01:15:47,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:15:47,499 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:47,500 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:47,501 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-11-07 01:15:47,501 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:15:47,501 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:163, output treesize:76 [2021-11-07 01:15:47,506 INFO L180 QuantifierPusher]: treesize reduction 43, result has 53.8 percent of original size [2021-11-07 01:15:47,508 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-11-07 01:15:47,512 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:47,517 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 181 [2021-11-07 01:15:47,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:15:47,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:15:47,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:15:47,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:15:47,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:15:47,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:15:47,538 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:15:47,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:15:47,550 INFO L180 QuantifierPusher]: treesize reduction 42, result has 74.1 percent of original size [2021-11-07 01:15:47,557 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 179 [2021-11-07 01:15:47,565 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 01:15:48,488 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 01:15:48,492 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:15:48,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-11-07 01:15:48,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688251705] [2021-11-07 01:15:48,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-07 01:15:48,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:15:48,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-07 01:15:48,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2021-11-07 01:15:48,494 INFO L87 Difference]: Start difference. First operand 27 states and 34 transitions. Second operand has 15 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:49,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:15:49,311 INFO L93 Difference]: Finished difference Result 81 states and 89 transitions. [2021-11-07 01:15:49,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-07 01:15:49,313 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-07 01:15:49,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:15:49,314 INFO L225 Difference]: With dead ends: 81 [2021-11-07 01:15:49,314 INFO L226 Difference]: Without dead ends: 79 [2021-11-07 01:15:49,315 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=152, Invalid=660, Unknown=0, NotChecked=0, Total=812 [2021-11-07 01:15:49,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-11-07 01:15:49,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 27. [2021-11-07 01:15:49,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 26 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:49,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2021-11-07 01:15:49,322 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 34 transitions. Word has length 12 [2021-11-07 01:15:49,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:15:49,323 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 34 transitions. [2021-11-07 01:15:49,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:49,323 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions. [2021-11-07 01:15:49,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-07 01:15:49,324 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:15:49,324 INFO L513 BasicCegarLoop]: trace histogram [8, 1, 1, 1, 1, 1, 1] [2021-11-07 01:15:49,347 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb362fcc-f940-4591-b70e-5c99b52f0163/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:15:49,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb362fcc-f940-4591-b70e-5c99b52f0163/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2021-11-07 01:15:49,528 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:15:49,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:15:49,528 INFO L85 PathProgramCache]: Analyzing trace with hash -547871113, now seen corresponding path program 4 times [2021-11-07 01:15:49,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:15:49,529 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784561830] [2021-11-07 01:15:49,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:15:49,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:15:49,560 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 01:15:49,564 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [325299649] [2021-11-07 01:15:49,564 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 01:15:49,564 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:15:49,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb362fcc-f940-4591-b70e-5c99b52f0163/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:15:49,566 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb362fcc-f940-4591-b70e-5c99b52f0163/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:15:49,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb362fcc-f940-4591-b70e-5c99b52f0163/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-07 01:15:50,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:15:50,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-07 01:15:50,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:15:50,505 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-07 01:15:50,510 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-11-07 01:15:50,539 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-07 01:15:50,539 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2021-11-07 01:15:50,614 INFO L354 Elim1Store]: treesize reduction 178, result has 15.6 percent of original size [2021-11-07 01:15:50,614 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 85 treesize of output 105 [2021-11-07 01:15:50,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:50,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:50,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:50,641 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 39 treesize of output 16 [2021-11-07 01:15:50,766 INFO L354 Elim1Store]: treesize reduction 104, result has 20.0 percent of original size [2021-11-07 01:15:50,767 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 39 treesize of output 44 [2021-11-07 01:15:50,859 INFO L354 Elim1Store]: treesize reduction 164, result has 17.6 percent of original size [2021-11-07 01:15:50,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 48 treesize of output 56 [2021-11-07 01:15:51,032 INFO L354 Elim1Store]: treesize reduction 550, result has 13.7 percent of original size [2021-11-07 01:15:51,032 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 20 case distinctions, treesize of input 112 treesize of output 168 [2021-11-07 01:15:51,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:51,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:51,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:51,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:51,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:51,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:51,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:51,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:51,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:51,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:51,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:51,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:51,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:51,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:51,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:51,112 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 87 treesize of output 40 [2021-11-07 01:15:51,378 INFO L354 Elim1Store]: treesize reduction 764, result has 13.3 percent of original size [2021-11-07 01:15:51,378 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 27 case distinctions, treesize of input 135 treesize of output 209 [2021-11-07 01:15:51,405 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-07 01:15:51,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:51,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:51,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:51,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:51,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:51,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:51,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:51,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:51,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:51,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:51,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:51,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:51,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:51,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:51,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:51,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:51,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:51,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:51,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:51,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:51,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:15:51,519 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 119 treesize of output 56 [2021-11-07 01:15:51,710 INFO L354 Elim1Store]: treesize reduction 416, result has 13.0 percent of original size [2021-11-07 01:15:51,710 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 75 treesize of output 92 [2021-11-07 01:15:52,157 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:15:52,157 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:15:54,937 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:15:54,937 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 181 treesize of output 181 [2021-11-07 01:15:55,244 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 6 [2021-11-07 01:15:55,720 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 6 [2021-11-07 01:15:56,115 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 173 treesize of output 167 [2021-11-07 01:15:56,529 INFO L354 Elim1Store]: treesize reduction 39, result has 23.5 percent of original size [2021-11-07 01:15:56,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1145872 treesize of output 1145355 [2021-11-07 01:16:16,583 WARN L207 SmtUtils]: Spent 10.55 s on a formula simplification. DAG size of input: 584 DAG size of output: 584 [2021-11-07 01:17:36,090 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:17:36,091 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:17:36,091 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784561830] [2021-11-07 01:17:36,091 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 01:17:36,091 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325299649] [2021-11-07 01:17:36,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325299649] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:17:36,091 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [963187064] [2021-11-07 01:17:36,093 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2021-11-07 01:17:36,093 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 01:17:36,094 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 01:17:36,094 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 01:17:36,094 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 01:17:36,100 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:17:36,101 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:17:36,101 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:17:36,102 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 01:17:36,102 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:17:36,103 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:17:36,103 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 01:17:36,105 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 130 [2021-11-07 01:17:36,109 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_24|], 21=[|v_#valid_25|]} [2021-11-07 01:17:36,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:17:36,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:17:36,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:17:36,121 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-07 01:17:36,121 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:17:36,124 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:17:36,125 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:17:36,126 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:17:36,126 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:17:36,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:17:36,130 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:17:36,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:17:36,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:17:36,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:17:36,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:17:36,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:17:36,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:17:36,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:17:36,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:17:36,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:17:36,154 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-07 01:17:36,155 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:17:36,159 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 01:17:36,160 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:17:36,160 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 01:17:36,161 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 01:17:36,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:17:36,165 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:17:36,166 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:17:36,168 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 102 [2021-11-07 01:17:36,168 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:17:36,169 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:127, output treesize:102 [2021-11-07 01:17:36,174 INFO L180 QuantifierPusher]: treesize reduction 5, result has 96.5 percent of original size [2021-11-07 01:17:36,175 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:17:36,175 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:17:36,176 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-07 01:17:36,176 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:17:36,177 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:17:36,177 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-07 01:17:36,179 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 139 [2021-11-07 01:17:36,183 INFO L446 ElimStorePlain]: Different costs {6=[|v_#length_25|], 15=[|v_#valid_26|]} [2021-11-07 01:17:36,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:17:36,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:17:36,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:17:36,203 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-07 01:17:36,203 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 32 [2021-11-07 01:17:36,204 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:17:36,206 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-07 01:17:36,206 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:17:36,207 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-07 01:17:36,207 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:17:36,208 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:17:36,214 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:17:36,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:17:36,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:17:36,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:17:36,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:17:36,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:17:36,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:17:36,230 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 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 32 treesize of output 41 [2021-11-07 01:17:36,231 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:17:36,233 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-07 01:17:36,234 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:17:36,234 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-07 01:17:36,235 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 01:17:36,235 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:17:36,240 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:17:36,241 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:17:36,243 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 128 [2021-11-07 01:17:36,244 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:17:36,244 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:135, output treesize:128 [2021-11-07 01:17:36,248 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:17:36,250 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:17:36,250 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:17:36,251 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-07 01:17:36,253 INFO L185 QuantifierPusher]: treesize reduction 3, result has 97.9 percent of original size 141 [2021-11-07 01:17:36,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:17:36,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:17:36,265 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2021-11-07 01:17:36,266 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:17:36,267 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-07 01:17:36,267 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:17:36,268 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-07 01:17:36,268 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:17:36,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:17:36,273 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:17:36,275 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-11-07 01:17:36,277 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 135 [2021-11-07 01:17:36,278 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:17:36,278 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:142, output treesize:135 [2021-11-07 01:17:36,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:17:36,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:17:36,307 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:17:36,329 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:17:36,338 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:17:36,341 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:17:36,342 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:17:36,343 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:17:36,344 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:17:36,347 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:17:36,348 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-11-07 01:17:36,349 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:17:36,349 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:17:36,350 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-07 01:17:36,351 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-07 01:17:36,351 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:17:36,352 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:17:36,352 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-11-07 01:17:36,355 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:17:36,356 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:17:36,356 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:17:36,357 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:17:36,357 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 01:17:36,358 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:17:36,359 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:17:36,359 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-11-07 01:17:36,360 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-11-07 01:17:36,360 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:17:36,361 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:17:36,361 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-11-07 01:17:36,365 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 410 [2021-11-07 01:17:36,365 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:17:36,368 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:17:36,377 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 338 [2021-11-07 01:17:36,381 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 408 [2021-11-07 01:17:36,399 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-07 01:17:36,400 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:17:36,400 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 01:17:36,400 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:17:36,401 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 01:17:36,401 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:17:36,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:17:36,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:17:36,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:17:36,427 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 54 [2021-11-07 01:17:36,432 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:17:36,434 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-07 01:17:36,435 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:17:36,436 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-07 01:17:36,436 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 01:17:36,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:17:36,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:17:36,457 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 44 [2021-11-07 01:17:36,457 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:17:36,458 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-07 01:17:36,458 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:17:36,459 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-07 01:17:36,459 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-11-07 01:17:36,468 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-07 01:17:36,468 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:17:36,468 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 01:17:36,469 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:17:36,469 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 01:17:36,469 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-11-07 01:17:36,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:17:36,512 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:17:36,541 INFO L180 QuantifierPusher]: treesize reduction 108, result has 76.5 percent of original size [2021-11-07 01:17:36,545 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 352 [2021-11-07 01:17:36,546 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-07 01:17:36,547 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 1 variables, input treesize:939, output treesize:352 [2021-11-07 01:17:36,554 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:17:36,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:17:36,589 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:17:36,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:17:36,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:17:36,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:17:36,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:17:36,604 INFO L180 QuantifierPusher]: treesize reduction 42, result has 71.4 percent of original size [2021-11-07 01:17:36,605 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:17:36,606 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:17:36,606 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-07 01:17:36,607 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:17:36,607 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:17:36,607 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-07 01:17:36,609 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-11-07 01:17:36,618 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-11-07 01:17:36,619 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:17:36,619 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 01:17:36,620 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:17:36,620 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 01:17:36,620 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:17:36,621 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:17:36,625 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:17:36,631 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-07 01:17:36,631 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:17:36,632 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 01:17:36,632 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:17:36,633 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 01:17:36,633 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 01:17:36,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:17:36,635 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:17:36,636 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:17:36,637 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-11-07 01:17:36,638 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:17:36,638 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:163, output treesize:76 [2021-11-07 01:17:36,642 INFO L180 QuantifierPusher]: treesize reduction 43, result has 53.8 percent of original size [2021-11-07 01:17:36,644 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-11-07 01:17:36,649 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 01:17:37,588 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 01:17:37,588 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:17:37,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-11-07 01:17:37,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111029662] [2021-11-07 01:17:37,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-07 01:17:37,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:17:37,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-07 01:17:37,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=593, Unknown=0, NotChecked=0, Total=756 [2021-11-07 01:17:37,590 INFO L87 Difference]: Start difference. First operand 27 states and 34 transitions. Second operand has 23 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 23 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) [2021-11-07 01:18:00,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:18:00,706 INFO L93 Difference]: Finished difference Result 169 states and 192 transitions. [2021-11-07 01:18:00,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-07 01:18:00,707 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 23 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 [2021-11-07 01:18:00,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:18:00,710 INFO L225 Difference]: With dead ends: 169 [2021-11-07 01:18:00,711 INFO L226 Difference]: Without dead ends: 167 [2021-11-07 01:18:00,713 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=726, Invalid=2136, Unknown=0, NotChecked=0, Total=2862 [2021-11-07 01:18:00,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-11-07 01:18:00,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 47. [2021-11-07 01:18:00,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.3478260869565217) internal successors, (62), 46 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:18:00,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2021-11-07 01:18:00,725 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 14 [2021-11-07 01:18:00,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:18:00,726 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2021-11-07 01:18:00,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 23 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) [2021-11-07 01:18:00,726 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2021-11-07 01:18:00,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-07 01:18:00,727 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:18:00,727 INFO L513 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:18:00,761 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb362fcc-f940-4591-b70e-5c99b52f0163/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:18:00,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb362fcc-f940-4591-b70e-5c99b52f0163/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable85 [2021-11-07 01:18:00,952 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:18:00,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:18:00,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1107374710, now seen corresponding path program 2 times [2021-11-07 01:18:00,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:18:00,953 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243133650] [2021-11-07 01:18:00,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:18:00,953 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:18:00,963 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 01:18:00,974 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [366592094] [2021-11-07 01:18:00,974 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 01:18:00,974 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:18:00,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb362fcc-f940-4591-b70e-5c99b52f0163/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:18:00,975 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb362fcc-f940-4591-b70e-5c99b52f0163/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:18:00,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb362fcc-f940-4591-b70e-5c99b52f0163/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-07 01:18:01,341 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-07 01:18:01,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:18:01,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-07 01:18:01,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:18:01,399 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-07 01:18:01,403 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-11-07 01:18:01,437 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-07 01:18:01,437 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-11-07 01:18:01,564 INFO L354 Elim1Store]: treesize reduction 172, result has 24.9 percent of original size [2021-11-07 01:18:01,564 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 87 treesize of output 129 [2021-11-07 01:18:01,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:18:01,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:18:01,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:18:01,608 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 72 treesize of output 48 [2021-11-07 01:18:01,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:18:01,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:18:01,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:18:01,907 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 91 treesize of output 54 [2021-11-07 01:18:02,402 INFO L354 Elim1Store]: treesize reduction 469, result has 19.7 percent of original size [2021-11-07 01:18:02,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 14 case distinctions, treesize of input 181 treesize of output 244 [2021-11-07 01:18:02,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:18:02,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:18:02,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:18:02,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:18:02,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:18:02,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:18:02,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:18:02,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:18:02,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:18:02,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:18:02,939 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 126 treesize of output 66 [2021-11-07 01:18:03,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:18:03,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:18:03,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:18:03,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:18:03,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:18:03,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:18:03,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:18:03,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:18:03,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:18:03,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:18:03,465 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 102 treesize of output 55 [2021-11-07 01:18:05,685 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-07 01:18:07,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:18:07,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:18:07,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:18:07,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:18:07,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:18:07,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:18:07,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:18:07,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:18:07,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:18:07,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:18:07,945 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 129 treesize of output 63 [2021-11-07 01:18:08,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:18:08,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:18:08,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:18:08,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:18:08,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:18:08,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:18:08,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:18:08,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:18:08,088 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-11-07 01:18:08,088 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 144 treesize of output 72 [2021-11-07 01:18:08,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:18:08,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:18:08,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:18:08,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:18:08,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:18:08,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:18:08,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:18:08,453 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:18:08,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:18:08,490 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 135 treesize of output 69 [2021-11-07 01:18:09,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:18:09,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:18:09,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:18:09,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:18:09,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:18:09,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:18:09,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:18:09,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:18:09,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:18:09,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:18:09,057 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 121 treesize of output 61 [2021-11-07 01:18:09,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:18:09,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:18:09,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:18:09,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:18:09,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:18:09,384 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:18:09,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:18:09,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:18:09,389 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 93 treesize of output 45 [2021-11-07 01:19:01,918 WARN L207 SmtUtils]: Spent 43.73 s on a formula simplification that was a NOOP. DAG size: 169 [2021-11-07 01:19:05,626 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-07 01:19:05,626 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 80 treesize of output 56 [2021-11-07 01:19:05,692 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:19:05,692 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:19:08,831 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:19:08,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243133650] [2021-11-07 01:19:08,831 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 01:19:08,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366592094] [2021-11-07 01:19:08,832 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [ULTIMATE.start_main_~i~0] [2021-11-07 01:19:08,832 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1827625331] [2021-11-07 01:19:08,834 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-07 01:19:08,834 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 01:19:08,834 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 01:19:08,834 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 01:19:08,835 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 01:19:08,844 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:19:08,844 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:19:08,845 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:19:08,845 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 01:19:08,846 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:19:08,846 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:19:08,847 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 01:19:08,848 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 130 [2021-11-07 01:19:08,851 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_26|], 21=[|v_#valid_27|]} [2021-11-07 01:19:08,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:19:08,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:19:08,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:19:08,862 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-07 01:19:08,863 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:19:08,863 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:19:08,863 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:19:08,864 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:19:08,864 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:19:08,864 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:19:08,867 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:19:08,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:19:08,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:19:08,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:19:08,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:19:08,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:19:08,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:19:08,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:19:08,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:19:08,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:19:08,887 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-07 01:19:08,888 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:19:08,891 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 01:19:08,891 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:19:08,892 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 01:19:08,892 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 01:19:08,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:19:08,896 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:19:08,897 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:19:08,898 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 102 [2021-11-07 01:19:08,899 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:19:08,899 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:127, output treesize:102 [2021-11-07 01:19:08,904 INFO L180 QuantifierPusher]: treesize reduction 5, result has 96.5 percent of original size [2021-11-07 01:19:08,905 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:19:08,906 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:19:08,906 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-07 01:19:08,907 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:19:08,907 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:19:08,907 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-07 01:19:08,909 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 139 [2021-11-07 01:19:08,916 INFO L446 ElimStorePlain]: Different costs {6=[|v_#length_27|], 15=[|v_#valid_28|]} [2021-11-07 01:19:08,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:19:08,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:19:08,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:19:08,940 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-07 01:19:08,940 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 32 [2021-11-07 01:19:08,941 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:19:08,943 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-07 01:19:08,943 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:19:08,944 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-07 01:19:08,944 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:19:08,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:19:08,950 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:19:08,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:19:08,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:19:08,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:19:08,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:19:08,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:19:08,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:19:08,969 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 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 32 treesize of output 41 [2021-11-07 01:19:08,970 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:19:08,972 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-07 01:19:08,973 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:19:08,974 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-07 01:19:08,974 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 01:19:08,974 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:19:08,979 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:19:08,981 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:19:08,983 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 128 [2021-11-07 01:19:08,983 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:19:08,983 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:135, output treesize:128 [2021-11-07 01:19:08,986 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:19:08,988 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:19:08,989 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:19:08,989 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-07 01:19:08,992 INFO L185 QuantifierPusher]: treesize reduction 3, result has 97.9 percent of original size 141 [2021-11-07 01:19:09,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:19:09,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:19:09,005 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2021-11-07 01:19:09,006 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:19:09,007 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-07 01:19:09,008 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:19:09,008 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-07 01:19:09,009 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:19:09,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:19:09,015 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:19:09,017 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-11-07 01:19:09,019 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 135 [2021-11-07 01:19:09,019 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:19:09,019 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:142, output treesize:135 [2021-11-07 01:19:09,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:19:09,037 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:19:09,051 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:19:09,076 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:19:09,085 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:19:09,090 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:19:09,093 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:19:09,096 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:19:09,097 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:19:09,098 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:19:09,098 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 01:19:09,099 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:19:09,099 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:19:09,100 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-07 01:19:09,103 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 322 [2021-11-07 01:19:09,103 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:19:09,106 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:19:09,109 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 294 [2021-11-07 01:19:09,112 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:19:09,115 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:19:09,116 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:19:09,117 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:19:09,117 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-11-07 01:19:09,118 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:19:09,118 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:19:09,119 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-11-07 01:19:09,122 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 324 [2021-11-07 01:19:09,123 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:19:09,125 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:19:09,128 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 295 [2021-11-07 01:19:09,133 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 609 [2021-11-07 01:19:09,134 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:19:09,137 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:19:09,140 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 338 [2021-11-07 01:19:09,143 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 408 [2021-11-07 01:19:09,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:19:09,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:19:09,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:19:09,182 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 54 [2021-11-07 01:19:09,183 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:19:09,184 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-07 01:19:09,185 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:19:09,185 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-07 01:19:09,186 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:19:09,196 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-07 01:19:09,197 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:19:09,197 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 01:19:09,197 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:19:09,198 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 01:19:09,198 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 01:19:09,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:19:09,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:19:09,222 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 42 treesize of output 44 [2021-11-07 01:19:09,223 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:19:09,224 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-07 01:19:09,225 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:19:09,226 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-07 01:19:09,226 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-11-07 01:19:09,236 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-07 01:19:09,236 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:19:09,237 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 01:19:09,237 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:19:09,238 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 01:19:09,238 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-11-07 01:19:09,238 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:19:09,273 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:19:09,283 INFO L180 QuantifierPusher]: treesize reduction 108, result has 76.5 percent of original size [2021-11-07 01:19:09,287 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 352 [2021-11-07 01:19:09,288 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-07 01:19:09,288 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 1 variables, input treesize:939, output treesize:352 [2021-11-07 01:19:09,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:19:09,346 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:19:09,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:19:09,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:19:09,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:19:09,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:19:09,358 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:19:09,365 INFO L180 QuantifierPusher]: treesize reduction 42, result has 71.4 percent of original size [2021-11-07 01:19:09,366 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:19:09,367 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:19:09,367 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-07 01:19:09,368 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:19:09,368 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:19:09,369 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-07 01:19:09,370 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-11-07 01:19:09,378 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-07 01:19:09,378 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:19:09,379 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 01:19:09,379 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:19:09,379 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 01:19:09,379 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:19:09,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:19:09,382 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:19:09,387 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-11-07 01:19:09,388 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:19:09,388 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 01:19:09,389 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:19:09,389 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 01:19:09,389 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 01:19:09,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:19:09,392 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:19:09,393 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:19:09,394 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-11-07 01:19:09,394 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:19:09,394 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:163, output treesize:76 [2021-11-07 01:19:09,399 INFO L180 QuantifierPusher]: treesize reduction 43, result has 53.8 percent of original size [2021-11-07 01:19:09,401 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-11-07 01:19:09,406 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:19:09,410 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 181 [2021-11-07 01:19:09,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:19:09,423 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:19:09,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:19:09,426 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:19:09,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:19:09,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:19:09,435 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:19:09,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:19:09,448 INFO L180 QuantifierPusher]: treesize reduction 42, result has 74.1 percent of original size [2021-11-07 01:19:09,453 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 179 [2021-11-07 01:19:09,463 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 01:19:10,546 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 01:19:10,546 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:19:10,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-11-07 01:19:10,546 ERROR L172 FreeRefinementEngine]: Strategy SIFA_TAIPAN failed to provide any proof altough trace is infeasible [2021-11-07 01:19:10,547 INFO L627 BasicCegarLoop]: Counterexample might be feasible [2021-11-07 01:19:10,554 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:19:10,565 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb362fcc-f940-4591-b70e-5c99b52f0163/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:19:10,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb362fcc-f940-4591-b70e-5c99b52f0163/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:19:10,764 INFO L731 BasicCegarLoop]: Path program histogram: [4, 2, 1] [2021-11-07 01:19:10,766 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 01:19:10,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:19:10 BoogieIcfgContainer [2021-11-07 01:19:10,778 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 01:19:10,778 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 01:19:10,778 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 01:19:10,779 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 01:19:10,779 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:15:03" (3/4) ... [2021-11-07 01:19:10,782 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-07 01:19:10,783 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 01:19:10,783 INFO L168 Benchmark]: Toolchain (without parser) took 247956.44 ms. Allocated memory was 98.6 MB in the beginning and 327.2 MB in the end (delta: 228.6 MB). Free memory was 57.3 MB in the beginning and 200.5 MB in the end (delta: -143.2 MB). Peak memory consumption was 85.5 MB. Max. memory is 16.1 GB. [2021-11-07 01:19:10,783 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 98.6 MB. Free memory was 73.5 MB in the beginning and 73.4 MB in the end (delta: 53.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:19:10,784 INFO L168 Benchmark]: CACSL2BoogieTranslator took 306.22 ms. Allocated memory is still 98.6 MB. Free memory was 57.1 MB in the beginning and 73.3 MB in the end (delta: -16.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-11-07 01:19:10,784 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.11 ms. Allocated memory is still 98.6 MB. Free memory was 73.3 MB in the beginning and 71.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:19:10,784 INFO L168 Benchmark]: Boogie Preprocessor took 25.70 ms. Allocated memory is still 98.6 MB. Free memory was 71.6 MB in the beginning and 70.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:19:10,784 INFO L168 Benchmark]: RCFGBuilder took 432.24 ms. Allocated memory is still 98.6 MB. Free memory was 70.5 MB in the beginning and 58.9 MB in the end (delta: 11.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 01:19:10,785 INFO L168 Benchmark]: TraceAbstraction took 247143.57 ms. Allocated memory was 98.6 MB in the beginning and 327.2 MB in the end (delta: 228.6 MB). Free memory was 58.5 MB in the beginning and 201.5 MB in the end (delta: -143.0 MB). Peak memory consumption was 87.7 MB. Max. memory is 16.1 GB. [2021-11-07 01:19:10,785 INFO L168 Benchmark]: Witness Printer took 4.48 ms. Allocated memory is still 327.2 MB. Free memory is still 200.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:19:10,786 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 98.6 MB. Free memory was 73.5 MB in the beginning and 73.4 MB in the end (delta: 53.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 306.22 ms. Allocated memory is still 98.6 MB. Free memory was 57.1 MB in the beginning and 73.3 MB in the end (delta: -16.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.11 ms. Allocated memory is still 98.6 MB. Free memory was 73.3 MB in the beginning and 71.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.70 ms. Allocated memory is still 98.6 MB. Free memory was 71.6 MB in the beginning and 70.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 432.24 ms. Allocated memory is still 98.6 MB. Free memory was 70.5 MB in the beginning and 58.9 MB in the end (delta: 11.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 247143.57 ms. Allocated memory was 98.6 MB in the beginning and 327.2 MB in the end (delta: 228.6 MB). Free memory was 58.5 MB in the beginning and 201.5 MB in the end (delta: -143.0 MB). Peak memory consumption was 87.7 MB. Max. memory is 16.1 GB. * Witness Printer took 4.48 ms. Allocated memory is still 327.2 MB. Free memory is still 200.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 8]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L12] int SIZE; [L14] const int MAX = 100000; [L18] SIZE = __VERIFIER_nondet_int() [L19] COND TRUE SIZE > 1 && SIZE < MAX [L21] long long i; [L22] long long *a = malloc(sizeof(long long)*SIZE); [L24] i=0 [L24] COND TRUE i main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb362fcc-f940-4591-b70e-5c99b52f0163/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3116e607f032f81b099fa1792f5e25b70e1832d9d57f1b8b6500e90d2143faec [2021-11-07 01:19:13,998 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:19:14,024 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:19:14,027 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:19:14,028 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:19:14,029 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:19:14,030 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb362fcc-f940-4591-b70e-5c99b52f0163/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/array-tiling/poly1.c [2021-11-07 01:19:14,117 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb362fcc-f940-4591-b70e-5c99b52f0163/bin/utaipan-UUZaoUuFF8/data/6ede2a559/3a5f8d62c9594950bc9b645a33ae2f71/FLAG8d2a85c2e [2021-11-07 01:19:14,641 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:19:14,642 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb362fcc-f940-4591-b70e-5c99b52f0163/sv-benchmarks/c/array-tiling/poly1.c [2021-11-07 01:19:14,650 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb362fcc-f940-4591-b70e-5c99b52f0163/bin/utaipan-UUZaoUuFF8/data/6ede2a559/3a5f8d62c9594950bc9b645a33ae2f71/FLAG8d2a85c2e [2021-11-07 01:19:15,017 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb362fcc-f940-4591-b70e-5c99b52f0163/bin/utaipan-UUZaoUuFF8/data/6ede2a559/3a5f8d62c9594950bc9b645a33ae2f71 [2021-11-07 01:19:15,021 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:19:15,022 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:19:15,024 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:19:15,025 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:19:15,029 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:19:15,030 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:19:15" (1/1) ... [2021-11-07 01:19:15,031 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f12210 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:15, skipping insertion in model container [2021-11-07 01:19:15,032 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:19:15" (1/1) ... [2021-11-07 01:19:15,040 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:19:15,057 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:19:15,210 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb362fcc-f940-4591-b70e-5c99b52f0163/sv-benchmarks/c/array-tiling/poly1.c[396,409] [2021-11-07 01:19:15,226 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:19:15,243 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:19:15,271 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb362fcc-f940-4591-b70e-5c99b52f0163/sv-benchmarks/c/array-tiling/poly1.c[396,409] [2021-11-07 01:19:15,280 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:19:15,318 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:19:15,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:15 WrapperNode [2021-11-07 01:19:15,349 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:19:15,350 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:19:15,351 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:19:15,351 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:19:15,359 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:15" (1/1) ... [2021-11-07 01:19:15,369 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:15" (1/1) ... [2021-11-07 01:19:15,389 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:19:15,390 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:19:15,391 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:19:15,391 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:19:15,400 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:15" (1/1) ... [2021-11-07 01:19:15,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:15" (1/1) ... [2021-11-07 01:19:15,404 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:15" (1/1) ... [2021-11-07 01:19:15,405 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:15" (1/1) ... [2021-11-07 01:19:15,412 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:15" (1/1) ... [2021-11-07 01:19:15,416 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:15" (1/1) ... [2021-11-07 01:19:15,418 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:15" (1/1) ... [2021-11-07 01:19:15,421 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:19:15,422 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:19:15,422 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:19:15,422 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:19:15,423 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:15" (1/1) ... [2021-11-07 01:19:15,430 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:19:15,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb362fcc-f940-4591-b70e-5c99b52f0163/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:19:15,457 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb362fcc-f940-4591-b70e-5c99b52f0163/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:19:15,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb362fcc-f940-4591-b70e-5c99b52f0163/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:19:15,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:19:15,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:19:15,501 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 01:19:15,501 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:19:15,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:19:15,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:19:15,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-07 01:19:15,934 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:19:15,934 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-11-07 01:19:15,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:19:15 BoogieIcfgContainer [2021-11-07 01:19:15,937 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:19:15,939 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:19:15,939 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:19:15,943 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:19:15,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:19:15" (1/3) ... [2021-11-07 01:19:15,957 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a112832 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:19:15, skipping insertion in model container [2021-11-07 01:19:15,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:15" (2/3) ... [2021-11-07 01:19:15,958 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a112832 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:19:15, skipping insertion in model container [2021-11-07 01:19:15,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:19:15" (3/3) ... [2021-11-07 01:19:15,960 INFO L111 eAbstractionObserver]: Analyzing ICFG poly1.c [2021-11-07 01:19:15,965 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:19:15,972 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 01:19:16,040 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:19:16,053 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 01:19:16,053 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 01:19:16,071 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 14 states have (on average 1.5) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:19:16,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 01:19:16,113 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:19:16,114 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:19:16,115 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:19:16,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:19:16,122 INFO L85 PathProgramCache]: Analyzing trace with hash 126991449, now seen corresponding path program 1 times [2021-11-07 01:19:16,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:19:16,137 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [659818246] [2021-11-07 01:19:16,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:19:16,138 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:19:16,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb362fcc-f940-4591-b70e-5c99b52f0163/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:19:16,142 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb362fcc-f940-4591-b70e-5c99b52f0163/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:19:16,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb362fcc-f940-4591-b70e-5c99b52f0163/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:19:16,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:19:16,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 01:19:16,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:19:16,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:19:16,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:19:16,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:19:16,408 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:19:16,408 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [659818246] [2021-11-07 01:19:16,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [659818246] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:19:16,410 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:19:16,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:19:16,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322175703] [2021-11-07 01:19:16,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:19:16,420 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:19:16,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:19:16,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:19:16,443 INFO L87 Difference]: Start difference. First operand has 16 states, 14 states have (on average 1.5) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:19:16,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:19:16,461 INFO L93 Difference]: Finished difference Result 27 states and 34 transitions. [2021-11-07 01:19:16,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:19:16,463 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-07 01:19:16,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:19:16,472 INFO L225 Difference]: With dead ends: 27 [2021-11-07 01:19:16,472 INFO L226 Difference]: Without dead ends: 12 [2021-11-07 01:19:16,475 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:19:16,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-11-07 01:19:16,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-11-07 01:19:16,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:19:16,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2021-11-07 01:19:16,509 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 8 [2021-11-07 01:19:16,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:19:16,509 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2021-11-07 01:19:16,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:19:16,511 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2021-11-07 01:19:16,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 01:19:16,511 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:19:16,511 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:19:16,526 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb362fcc-f940-4591-b70e-5c99b52f0163/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:19:16,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb362fcc-f940-4591-b70e-5c99b52f0163/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:19:16,718 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:19:16,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:19:16,719 INFO L85 PathProgramCache]: Analyzing trace with hash 121450323, now seen corresponding path program 1 times [2021-11-07 01:19:16,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:19:16,720 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [237057113] [2021-11-07 01:19:16,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:19:16,720 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:19:16,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb362fcc-f940-4591-b70e-5c99b52f0163/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:19:16,722 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb362fcc-f940-4591-b70e-5c99b52f0163/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:19:16,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb362fcc-f940-4591-b70e-5c99b52f0163/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:19:16,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:19:16,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:19:16,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:19:17,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:19:17,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:19:17,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:19:17,079 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:19:17,080 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [237057113] [2021-11-07 01:19:17,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [237057113] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:19:17,080 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:19:17,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-07 01:19:17,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073505288] [2021-11-07 01:19:17,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:19:17,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:19:17,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:19:17,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:19:17,084 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 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) [2021-11-07 01:19:17,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:19:17,370 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2021-11-07 01:19:17,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:19:17,372 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 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) Word has length 8 [2021-11-07 01:19:17,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:19:17,373 INFO L225 Difference]: With dead ends: 22 [2021-11-07 01:19:17,373 INFO L226 Difference]: Without dead ends: 15 [2021-11-07 01:19:17,374 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:19:17,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-11-07 01:19:17,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-11-07 01:19:17,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:19:17,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2021-11-07 01:19:17,379 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 8 [2021-11-07 01:19:17,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:19:17,380 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-11-07 01:19:17,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 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) [2021-11-07 01:19:17,380 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2021-11-07 01:19:17,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-07 01:19:17,381 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:19:17,381 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:19:17,397 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb362fcc-f940-4591-b70e-5c99b52f0163/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:19:17,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb362fcc-f940-4591-b70e-5c99b52f0163/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:19:17,582 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:19:17,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:19:17,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1163175951, now seen corresponding path program 1 times [2021-11-07 01:19:17,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:19:17,584 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [958273521] [2021-11-07 01:19:17,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:19:17,584 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:19:17,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb362fcc-f940-4591-b70e-5c99b52f0163/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:19:17,594 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb362fcc-f940-4591-b70e-5c99b52f0163/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:19:17,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb362fcc-f940-4591-b70e-5c99b52f0163/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:19:17,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:19:17,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 01:19:17,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:19:17,952 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:19:17,988 INFO L354 Elim1Store]: treesize reduction 47, result has 24.2 percent of original size [2021-11-07 01:19:17,989 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 1 case distinctions, treesize of input 31 treesize of output 32 [2021-11-07 01:19:18,762 INFO L354 Elim1Store]: treesize reduction 138, result has 15.9 percent of original size [2021-11-07 01:19:18,763 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 4 case distinctions, treesize of input 35 treesize of output 41 [2021-11-07 01:19:19,228 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-07 01:19:19,228 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 75 treesize of output 33 [2021-11-07 01:19:19,398 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:19:19,398 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:19:31,539 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 131 treesize of output 127 [2021-11-07 01:19:31,790 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-11-07 01:19:31,794 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 2845166 treesize of output 2820590 [2021-11-07 01:19:39,711 WARN L207 SmtUtils]: Spent 7.91 s on a formula simplification that was a NOOP. DAG size: 1281 [2021-11-07 01:20:01,385 WARN L207 SmtUtils]: Spent 21.50 s on a formula simplification. DAG size of input: 1283 DAG size of output: 1283 [2021-11-07 01:20:28,665 WARN L207 SmtUtils]: Spent 6.92 s on a formula simplification that was a NOOP. DAG size: 1274 [2021-11-07 01:20:50,457 WARN L207 SmtUtils]: Spent 9.73 s on a formula simplification. DAG size of input: 1020 DAG size of output: 1020 [2021-11-07 01:21:33,845 WARN L207 SmtUtils]: Spent 15.05 s on a formula simplification. DAG size of input: 1272 DAG size of output: 1272 [2021-11-07 01:21:52,027 WARN L207 SmtUtils]: Spent 5.76 s on a formula simplification that was a NOOP. DAG size: 1266 [2021-11-07 01:22:08,392 WARN L207 SmtUtils]: Spent 6.37 s on a formula simplification. DAG size of input: 1259 DAG size of output: 1257 [2021-11-07 01:22:27,130 WARN L207 SmtUtils]: Spent 7.35 s on a formula simplification. DAG size of input: 1262 DAG size of output: 1260 [2021-11-07 01:22:53,309 WARN L207 SmtUtils]: Spent 5.39 s on a formula simplification. DAG size of input: 1252 DAG size of output: 1249