./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-tiling/mbpr3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-tiling/mbpr3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a50e57e46342104030586dde3ea26bc2e3984490f4fdef34fa383d24842d8980 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 06:16:26,076 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 06:16:26,080 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 06:16:26,135 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 06:16:26,135 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 06:16:26,140 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 06:16:26,142 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 06:16:26,146 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 06:16:26,148 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 06:16:26,154 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 06:16:26,155 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 06:16:26,157 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 06:16:26,158 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 06:16:26,160 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 06:16:26,162 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 06:16:26,170 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 06:16:26,172 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 06:16:26,173 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 06:16:26,176 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 06:16:26,186 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 06:16:26,188 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 06:16:26,190 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 06:16:26,193 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 06:16:26,194 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 06:16:26,204 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 06:16:26,204 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 06:16:26,205 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 06:16:26,207 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 06:16:26,207 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 06:16:26,209 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 06:16:26,209 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 06:16:26,210 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 06:16:26,212 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 06:16:26,214 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 06:16:26,215 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 06:16:26,216 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 06:16:26,216 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 06:16:26,217 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 06:16:26,217 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 06:16:26,218 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 06:16:26,219 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 06:16:26,220 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-20 06:16:26,260 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 06:16:26,260 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 06:16:26,260 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 06:16:26,261 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 06:16:26,261 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 06:16:26,261 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 06:16:26,262 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 06:16:26,262 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 06:16:26,262 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 06:16:26,262 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 06:16:26,263 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 06:16:26,263 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 06:16:26,263 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 06:16:26,263 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 06:16:26,263 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 06:16:26,263 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 06:16:26,264 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 06:16:26,264 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 06:16:26,264 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 06:16:26,264 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 06:16:26,264 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 06:16:26,265 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 06:16:26,265 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 06:16:26,265 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 06:16:26,265 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:16:26,265 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 06:16:26,266 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 06:16:26,266 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 06:16:26,266 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 06:16:26,266 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 06:16:26,266 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 06:16:26,267 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 06:16:26,267 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 06:16:26,267 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 06:16:26,267 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a50e57e46342104030586dde3ea26bc2e3984490f4fdef34fa383d24842d8980 [2021-11-20 06:16:26,536 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 06:16:26,563 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 06:16:26,566 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 06:16:26,567 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 06:16:26,568 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 06:16:26,570 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/array-tiling/mbpr3.c [2021-11-20 06:16:26,654 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/data/f18b37fd9/4583bb152a0a47c0aff485dae3acff45/FLAGef91269e7 [2021-11-20 06:16:27,215 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 06:16:27,215 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/sv-benchmarks/c/array-tiling/mbpr3.c [2021-11-20 06:16:27,234 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/data/f18b37fd9/4583bb152a0a47c0aff485dae3acff45/FLAGef91269e7 [2021-11-20 06:16:27,542 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/data/f18b37fd9/4583bb152a0a47c0aff485dae3acff45 [2021-11-20 06:16:27,548 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 06:16:27,551 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 06:16:27,557 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 06:16:27,558 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 06:16:27,563 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 06:16:27,565 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:16:27" (1/1) ... [2021-11-20 06:16:27,568 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b47830f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:16:27, skipping insertion in model container [2021-11-20 06:16:27,568 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:16:27" (1/1) ... [2021-11-20 06:16:27,578 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 06:16:27,606 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:16:27,852 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/sv-benchmarks/c/array-tiling/mbpr3.c[396,409] [2021-11-20 06:16:27,885 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:16:27,895 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 06:16:27,913 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/sv-benchmarks/c/array-tiling/mbpr3.c[396,409] [2021-11-20 06:16:27,932 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:16:27,948 INFO L208 MainTranslator]: Completed translation [2021-11-20 06:16:27,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:16:27 WrapperNode [2021-11-20 06:16:27,949 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 06:16:27,950 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 06:16:27,950 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 06:16:27,950 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 06:16:27,957 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:16:27" (1/1) ... [2021-11-20 06:16:27,967 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:16:27" (1/1) ... [2021-11-20 06:16:27,995 INFO L137 Inliner]: procedures = 15, calls = 32, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 107 [2021-11-20 06:16:27,995 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 06:16:27,996 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 06:16:27,996 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 06:16:27,996 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 06:16:28,006 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:16:27" (1/1) ... [2021-11-20 06:16:28,006 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:16:27" (1/1) ... [2021-11-20 06:16:28,010 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:16:27" (1/1) ... [2021-11-20 06:16:28,010 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:16:27" (1/1) ... [2021-11-20 06:16:28,018 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:16:27" (1/1) ... [2021-11-20 06:16:28,024 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:16:27" (1/1) ... [2021-11-20 06:16:28,026 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:16:27" (1/1) ... [2021-11-20 06:16:28,029 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 06:16:28,033 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 06:16:28,033 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 06:16:28,033 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 06:16:28,043 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:16:27" (1/1) ... [2021-11-20 06:16:28,052 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:16:28,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:16:28,084 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 06:16:28,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 06:16:28,140 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 06:16:28,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 06:16:28,140 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 06:16:28,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 06:16:28,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 06:16:28,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 06:16:28,141 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 06:16:28,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 06:16:28,218 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 06:16:28,219 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 06:16:28,517 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 06:16:28,525 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 06:16:28,525 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-20 06:16:28,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:16:28 BoogieIcfgContainer [2021-11-20 06:16:28,527 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 06:16:28,534 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 06:16:28,534 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 06:16:28,554 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 06:16:28,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 06:16:27" (1/3) ... [2021-11-20 06:16:28,555 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5614db6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:16:28, skipping insertion in model container [2021-11-20 06:16:28,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:16:27" (2/3) ... [2021-11-20 06:16:28,556 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5614db6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:16:28, skipping insertion in model container [2021-11-20 06:16:28,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:16:28" (3/3) ... [2021-11-20 06:16:28,558 INFO L111 eAbstractionObserver]: Analyzing ICFG mbpr3.c [2021-11-20 06:16:28,564 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 06:16:28,564 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 06:16:28,650 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 06:16:28,660 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=PETRI_NET, 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 [2021-11-20 06:16:28,660 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 06:16:28,678 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 32 states have (on average 1.53125) internal successors, (49), 33 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:16:28,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-20 06:16:28,686 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:16:28,686 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:16:28,687 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:16:28,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:16:28,694 INFO L85 PathProgramCache]: Analyzing trace with hash -565609025, now seen corresponding path program 1 times [2021-11-20 06:16:28,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:16:28,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667683688] [2021-11-20 06:16:28,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:16:28,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:16:28,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:16:28,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:16:28,920 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:16:28,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667683688] [2021-11-20 06:16:28,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667683688] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:16:28,923 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:16:28,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 06:16:28,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054512823] [2021-11-20 06:16:28,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:16:28,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 06:16:28,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:16:28,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 06:16:28,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 06:16:28,985 INFO L87 Difference]: Start difference. First operand has 34 states, 32 states have (on average 1.53125) internal successors, (49), 33 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 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) [2021-11-20 06:16:29,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:16:29,013 INFO L93 Difference]: Finished difference Result 63 states and 90 transitions. [2021-11-20 06:16:29,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 06:16:29,017 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 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 17 [2021-11-20 06:16:29,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:16:29,026 INFO L225 Difference]: With dead ends: 63 [2021-11-20 06:16:29,026 INFO L226 Difference]: Without dead ends: 29 [2021-11-20 06:16:29,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 06:16:29,036 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:16:29,038 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:16:29,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-11-20 06:16:29,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-11-20 06:16:29,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 28 states have internal predecessors, (36), 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) [2021-11-20 06:16:29,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2021-11-20 06:16:29,097 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 17 [2021-11-20 06:16:29,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:16:29,097 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2021-11-20 06:16:29,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 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) [2021-11-20 06:16:29,098 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2021-11-20 06:16:29,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-20 06:16:29,100 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:16:29,100 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:16:29,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 06:16:29,102 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:16:29,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:16:29,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1539779609, now seen corresponding path program 1 times [2021-11-20 06:16:29,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:16:29,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475579362] [2021-11-20 06:16:29,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:16:29,110 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:16:29,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:16:29,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:16:29,226 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:16:29,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475579362] [2021-11-20 06:16:29,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475579362] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:16:29,227 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:16:29,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 06:16:29,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048315905] [2021-11-20 06:16:29,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:16:29,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:16:29,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:16:29,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:16:29,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:16:29,235 INFO L87 Difference]: Start difference. First operand 29 states and 36 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 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) [2021-11-20 06:16:29,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:16:29,332 INFO L93 Difference]: Finished difference Result 38 states and 46 transitions. [2021-11-20 06:16:29,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 06:16:29,333 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 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 17 [2021-11-20 06:16:29,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:16:29,335 INFO L225 Difference]: With dead ends: 38 [2021-11-20 06:16:29,335 INFO L226 Difference]: Without dead ends: 36 [2021-11-20 06:16:29,336 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:16:29,338 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 9 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:16:29,339 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 98 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:16:29,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-11-20 06:16:29,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 31. [2021-11-20 06:16:29,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 30 states have internal predecessors, (38), 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) [2021-11-20 06:16:29,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2021-11-20 06:16:29,349 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 17 [2021-11-20 06:16:29,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:16:29,352 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2021-11-20 06:16:29,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 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) [2021-11-20 06:16:29,356 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2021-11-20 06:16:29,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-20 06:16:29,358 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:16:29,359 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:16:29,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 06:16:29,360 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:16:29,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:16:29,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1539720027, now seen corresponding path program 1 times [2021-11-20 06:16:29,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:16:29,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820963151] [2021-11-20 06:16:29,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:16:29,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:16:29,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:16:29,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:16:29,694 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:16:29,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820963151] [2021-11-20 06:16:29,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820963151] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:16:29,695 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:16:29,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 06:16:29,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985809349] [2021-11-20 06:16:29,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:16:29,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:16:29,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:16:29,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:16:29,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:16:29,700 INFO L87 Difference]: Start difference. First operand 31 states and 38 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 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) [2021-11-20 06:16:29,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:16:29,870 INFO L93 Difference]: Finished difference Result 64 states and 82 transitions. [2021-11-20 06:16:29,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 06:16:29,871 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 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 17 [2021-11-20 06:16:29,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:16:29,874 INFO L225 Difference]: With dead ends: 64 [2021-11-20 06:16:29,874 INFO L226 Difference]: Without dead ends: 43 [2021-11-20 06:16:29,875 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:16:29,885 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 86 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:16:29,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 23 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:16:29,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-11-20 06:16:29,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 34. [2021-11-20 06:16:29,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 33 states have internal predecessors, (41), 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) [2021-11-20 06:16:29,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2021-11-20 06:16:29,910 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 17 [2021-11-20 06:16:29,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:16:29,910 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2021-11-20 06:16:29,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 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) [2021-11-20 06:16:29,911 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2021-11-20 06:16:29,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-20 06:16:29,914 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:16:29,914 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:16:29,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 06:16:29,915 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:16:29,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:16:29,916 INFO L85 PathProgramCache]: Analyzing trace with hash -2048606314, now seen corresponding path program 1 times [2021-11-20 06:16:29,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:16:29,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813121156] [2021-11-20 06:16:29,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:16:29,917 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:16:29,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:16:30,085 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 06:16:30,086 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:16:30,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813121156] [2021-11-20 06:16:30,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813121156] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:16:30,087 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:16:30,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:16:30,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848351215] [2021-11-20 06:16:30,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:16:30,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:16:30,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:16:30,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:16:30,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:16:30,089 INFO L87 Difference]: Start difference. First operand 34 states and 41 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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) [2021-11-20 06:16:30,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:16:30,119 INFO L93 Difference]: Finished difference Result 49 states and 59 transitions. [2021-11-20 06:16:30,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:16:30,121 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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 29 [2021-11-20 06:16:30,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:16:30,123 INFO L225 Difference]: With dead ends: 49 [2021-11-20 06:16:30,123 INFO L226 Difference]: Without dead ends: 34 [2021-11-20 06:16:30,124 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:16:30,128 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 16 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:16:30,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 30 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:16:30,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-11-20 06:16:30,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-11-20 06:16:30,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.2121212121212122) internal successors, (40), 33 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:16:30,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2021-11-20 06:16:30,135 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 29 [2021-11-20 06:16:30,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:16:30,139 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2021-11-20 06:16:30,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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) [2021-11-20 06:16:30,140 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2021-11-20 06:16:30,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-20 06:16:30,142 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:16:30,142 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:16:30,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 06:16:30,142 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:16:30,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:16:30,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1853333972, now seen corresponding path program 1 times [2021-11-20 06:16:30,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:16:30,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381351708] [2021-11-20 06:16:30,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:16:30,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:16:30,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:16:30,780 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:16:30,781 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:16:30,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381351708] [2021-11-20 06:16:30,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381351708] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:16:30,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167893868] [2021-11-20 06:16:30,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:16:30,784 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:16:30,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:16:30,788 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:16:30,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 06:16:30,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:16:30,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-20 06:16:30,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:16:31,158 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 20 treesize of output 16 [2021-11-20 06:16:31,215 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 38 [2021-11-20 06:16:31,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:16:31,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:16:31,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:16:31,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:16:31,245 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 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 29 treesize of output 29 [2021-11-20 06:16:31,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:16:31,435 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2021-11-20 06:16:31,487 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 59 [2021-11-20 06:16:31,561 INFO L354 Elim1Store]: treesize reduction 232, result has 11.8 percent of original size [2021-11-20 06:16:31,562 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 109 treesize of output 97 [2021-11-20 06:16:31,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:16:31,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:16:31,622 INFO L354 Elim1Store]: treesize reduction 12, result has 7.7 percent of original size [2021-11-20 06:16:31,622 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 19 [2021-11-20 06:16:31,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:16:31,735 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2021-11-20 06:16:31,792 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 69 [2021-11-20 06:16:31,884 INFO L354 Elim1Store]: treesize reduction 455, result has 11.1 percent of original size [2021-11-20 06:16:31,885 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 119 treesize of output 126 [2021-11-20 06:16:31,923 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-20 06:16:31,995 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-20 06:16:32,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:16:32,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:16:32,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:16:32,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:16:32,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:16:32,058 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 06:16:32,059 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 135 treesize of output 97 [2021-11-20 06:16:32,394 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-20 06:16:32,395 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 44 treesize of output 28 [2021-11-20 06:16:32,433 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:16:32,434 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:16:32,676 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 15 treesize of output 13 [2021-11-20 06:16:32,679 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 26 [2021-11-20 06:16:32,755 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 06:16:32,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1167893868] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:16:32,755 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:16:32,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 7] total 21 [2021-11-20 06:16:32,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905006857] [2021-11-20 06:16:32,756 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:16:32,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-20 06:16:32,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:16:32,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-20 06:16:32,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2021-11-20 06:16:32,760 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand has 21 states, 21 states have (on average 3.619047619047619) internal successors, (76), 21 states have internal predecessors, (76), 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) [2021-11-20 06:16:33,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:16:33,284 INFO L93 Difference]: Finished difference Result 82 states and 99 transitions. [2021-11-20 06:16:33,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-20 06:16:33,299 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.619047619047619) internal successors, (76), 21 states have internal predecessors, (76), 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 29 [2021-11-20 06:16:33,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:16:33,300 INFO L225 Difference]: With dead ends: 82 [2021-11-20 06:16:33,300 INFO L226 Difference]: Without dead ends: 55 [2021-11-20 06:16:33,301 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 43 SyntacticMatches, 12 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=177, Invalid=635, Unknown=0, NotChecked=0, Total=812 [2021-11-20 06:16:33,302 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 50 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 29 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:16:33,303 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 87 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 180 Invalid, 0 Unknown, 29 Unchecked, 0.2s Time] [2021-11-20 06:16:33,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-11-20 06:16:33,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 36. [2021-11-20 06:16:33,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 35 states have internal predecessors, (41), 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) [2021-11-20 06:16:33,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2021-11-20 06:16:33,327 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 29 [2021-11-20 06:16:33,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:16:33,328 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2021-11-20 06:16:33,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.619047619047619) internal successors, (76), 21 states have internal predecessors, (76), 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) [2021-11-20 06:16:33,328 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2021-11-20 06:16:33,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-20 06:16:33,330 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:16:33,330 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:16:33,394 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 06:16:33,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:16:33,551 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:16:33,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:16:33,552 INFO L85 PathProgramCache]: Analyzing trace with hash -166695065, now seen corresponding path program 1 times [2021-11-20 06:16:33,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:16:33,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488230787] [2021-11-20 06:16:33,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:16:33,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:16:33,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:16:33,854 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:16:33,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:16:33,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488230787] [2021-11-20 06:16:33,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488230787] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:16:33,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122845309] [2021-11-20 06:16:33,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:16:33,858 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:16:33,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:16:33,863 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:16:33,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 06:16:33,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:16:33,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-20 06:16:33,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:16:34,033 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 20 treesize of output 16 [2021-11-20 06:16:34,065 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 32 [2021-11-20 06:16:34,102 INFO L354 Elim1Store]: treesize reduction 168, result has 13.0 percent of original size [2021-11-20 06:16:34,103 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 58 treesize of output 66 [2021-11-20 06:16:34,145 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-20 06:16:34,145 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 41 treesize of output 23 [2021-11-20 06:16:34,223 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-11-20 06:16:34,224 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 26 treesize of output 25 [2021-11-20 06:16:34,262 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 71 [2021-11-20 06:16:34,369 INFO L354 Elim1Store]: treesize reduction 495, result has 10.0 percent of original size [2021-11-20 06:16:34,369 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 121 treesize of output 124 [2021-11-20 06:16:34,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:16:34,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:16:34,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:16:34,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:16:34,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:16:34,397 INFO L354 Elim1Store]: treesize reduction 14, result has 6.7 percent of original size [2021-11-20 06:16:34,398 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 31 [2021-11-20 06:16:34,695 INFO L354 Elim1Store]: treesize reduction 14, result has 6.7 percent of original size [2021-11-20 06:16:34,695 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 49 treesize of output 28 [2021-11-20 06:16:34,716 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 06:16:34,716 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:16:34,884 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 15 [2021-11-20 06:16:34,887 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2021-11-20 06:16:34,974 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 06:16:34,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [122845309] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:16:34,975 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:16:34,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 8] total 23 [2021-11-20 06:16:34,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917582784] [2021-11-20 06:16:34,975 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:16:34,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-20 06:16:34,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:16:34,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-20 06:16:34,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2021-11-20 06:16:34,978 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand has 23 states, 23 states have (on average 4.043478260869565) internal successors, (93), 23 states have internal predecessors, (93), 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) [2021-11-20 06:16:35,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:16:35,418 INFO L93 Difference]: Finished difference Result 86 states and 98 transitions. [2021-11-20 06:16:35,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-20 06:16:35,419 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.043478260869565) internal successors, (93), 23 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-11-20 06:16:35,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:16:35,420 INFO L225 Difference]: With dead ends: 86 [2021-11-20 06:16:35,420 INFO L226 Difference]: Without dead ends: 63 [2021-11-20 06:16:35,421 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 57 SyntacticMatches, 8 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=194, Invalid=736, Unknown=0, NotChecked=0, Total=930 [2021-11-20 06:16:35,421 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 63 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 66 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:16:35,422 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 126 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 154 Invalid, 0 Unknown, 66 Unchecked, 0.2s Time] [2021-11-20 06:16:35,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-11-20 06:16:35,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 42. [2021-11-20 06:16:35,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.1219512195121952) internal successors, (46), 41 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:16:35,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2021-11-20 06:16:35,430 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 35 [2021-11-20 06:16:35,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:16:35,430 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2021-11-20 06:16:35,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.043478260869565) internal successors, (93), 23 states have internal predecessors, (93), 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) [2021-11-20 06:16:35,431 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2021-11-20 06:16:35,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-20 06:16:35,432 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:16:35,432 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:16:35,473 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-20 06:16:35,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:16:35,655 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:16:35,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:16:35,655 INFO L85 PathProgramCache]: Analyzing trace with hash 693076666, now seen corresponding path program 2 times [2021-11-20 06:16:35,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:16:35,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471879229] [2021-11-20 06:16:35,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:16:35,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:16:35,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:16:35,884 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 06:16:35,885 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:16:35,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471879229] [2021-11-20 06:16:35,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471879229] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:16:35,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300305362] [2021-11-20 06:16:35,885 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 06:16:35,886 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:16:35,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:16:35,887 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:16:35,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-20 06:16:35,959 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 06:16:35,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:16:35,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-20 06:16:35,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:16:36,014 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-20 06:16:36,034 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 36 [2021-11-20 06:16:36,072 INFO L354 Elim1Store]: treesize reduction 168, result has 14.7 percent of original size [2021-11-20 06:16:36,073 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 62 treesize of output 66 [2021-11-20 06:16:36,102 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-20 06:16:36,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:16:36,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:16:36,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:16:36,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 22 [2021-11-20 06:16:36,318 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 06:16:36,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:16:36,458 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 15 [2021-11-20 06:16:36,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2021-11-20 06:16:36,506 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 06:16:36,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1300305362] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:16:36,507 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:16:36,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 19 [2021-11-20 06:16:36,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478015775] [2021-11-20 06:16:36,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:16:36,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-20 06:16:36,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:16:36,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-20 06:16:36,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2021-11-20 06:16:36,512 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 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) [2021-11-20 06:16:36,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:16:36,930 INFO L93 Difference]: Finished difference Result 76 states and 83 transitions. [2021-11-20 06:16:36,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-20 06:16:36,931 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-11-20 06:16:36,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:16:36,932 INFO L225 Difference]: With dead ends: 76 [2021-11-20 06:16:36,932 INFO L226 Difference]: Without dead ends: 74 [2021-11-20 06:16:36,933 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 69 SyntacticMatches, 6 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=195, Invalid=675, Unknown=0, NotChecked=0, Total=870 [2021-11-20 06:16:36,934 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 137 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:16:36,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 123 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 06:16:36,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-11-20 06:16:36,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 48. [2021-11-20 06:16:36,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.127659574468085) internal successors, (53), 47 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:16:36,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 53 transitions. [2021-11-20 06:16:36,943 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 53 transitions. Word has length 41 [2021-11-20 06:16:36,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:16:36,943 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 53 transitions. [2021-11-20 06:16:36,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 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) [2021-11-20 06:16:36,944 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 53 transitions. [2021-11-20 06:16:36,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-20 06:16:36,945 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:16:36,945 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:16:36,984 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-20 06:16:37,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:16:37,159 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:16:37,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:16:37,159 INFO L85 PathProgramCache]: Analyzing trace with hash -296121395, now seen corresponding path program 3 times [2021-11-20 06:16:37,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:16:37,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749579393] [2021-11-20 06:16:37,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:16:37,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:16:37,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:16:37,485 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 17 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 06:16:37,486 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:16:37,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749579393] [2021-11-20 06:16:37,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749579393] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:16:37,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468119646] [2021-11-20 06:16:37,486 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 06:16:37,487 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:16:37,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:16:37,491 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:16:37,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-20 06:16:37,559 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-20 06:16:37,559 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:16:37,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-20 06:16:37,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:16:38,124 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 06:16:38,125 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:16:38,446 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 06:16:38,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468119646] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:16:38,447 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:16:38,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 28 [2021-11-20 06:16:38,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977546630] [2021-11-20 06:16:38,448 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:16:38,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-20 06:16:38,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:16:38,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-20 06:16:38,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=561, Unknown=0, NotChecked=0, Total=756 [2021-11-20 06:16:38,450 INFO L87 Difference]: Start difference. First operand 48 states and 53 transitions. Second operand has 28 states, 28 states have (on average 4.607142857142857) internal successors, (129), 28 states have internal predecessors, (129), 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) [2021-11-20 06:16:38,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:16:38,857 INFO L93 Difference]: Finished difference Result 136 states and 151 transitions. [2021-11-20 06:16:38,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-20 06:16:38,857 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.607142857142857) internal successors, (129), 28 states have internal predecessors, (129), 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 47 [2021-11-20 06:16:38,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:16:38,858 INFO L225 Difference]: With dead ends: 136 [2021-11-20 06:16:38,858 INFO L226 Difference]: Without dead ends: 69 [2021-11-20 06:16:38,859 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=289, Invalid=767, Unknown=0, NotChecked=0, Total=1056 [2021-11-20 06:16:38,860 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 365 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 06:16:38,860 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [365 Valid, 120 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 06:16:38,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-11-20 06:16:38,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 60. [2021-11-20 06:16:38,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.1016949152542372) internal successors, (65), 59 states have internal predecessors, (65), 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) [2021-11-20 06:16:38,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 65 transitions. [2021-11-20 06:16:38,869 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 65 transitions. Word has length 47 [2021-11-20 06:16:38,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:16:38,869 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 65 transitions. [2021-11-20 06:16:38,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 4.607142857142857) internal successors, (129), 28 states have internal predecessors, (129), 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) [2021-11-20 06:16:38,870 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 65 transitions. [2021-11-20 06:16:38,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-20 06:16:38,871 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:16:38,872 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:16:38,893 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-20 06:16:39,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:16:39,075 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:16:39,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:16:39,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1825837756, now seen corresponding path program 4 times [2021-11-20 06:16:39,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:16:39,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009251952] [2021-11-20 06:16:39,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:16:39,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:16:39,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:16:39,612 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 19 proven. 26 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-20 06:16:39,612 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:16:39,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009251952] [2021-11-20 06:16:39,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009251952] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:16:39,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [312762667] [2021-11-20 06:16:39,613 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-20 06:16:39,613 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:16:39,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:16:39,614 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:16:39,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-20 06:16:39,677 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-20 06:16:39,677 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:16:39,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-20 06:16:39,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:16:39,762 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-20 06:16:39,792 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 61 [2021-11-20 06:16:39,834 INFO L354 Elim1Store]: treesize reduction 312, result has 11.6 percent of original size [2021-11-20 06:16:39,834 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 111 treesize of output 104 [2021-11-20 06:16:39,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:16:39,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:16:39,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:16:39,855 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 31 [2021-11-20 06:16:39,914 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-11-20 06:16:39,914 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 26 treesize of output 25 [2021-11-20 06:16:39,946 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 71 [2021-11-20 06:16:40,012 INFO L354 Elim1Store]: treesize reduction 495, result has 10.0 percent of original size [2021-11-20 06:16:40,012 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 121 treesize of output 124 [2021-11-20 06:16:40,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:16:40,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:16:40,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:16:40,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:16:40,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:16:40,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:16:40,086 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 40 [2021-11-20 06:16:40,492 INFO L354 Elim1Store]: treesize reduction 14, result has 6.7 percent of original size [2021-11-20 06:16:40,493 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 49 treesize of output 28 [2021-11-20 06:16:40,534 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-20 06:16:40,534 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:16:41,169 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_83| Int)) (or (< (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 4) (* |v_ULTIMATE.start_main_~i~0#1_83| 12)) 0) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 8)) |c_ULTIMATE.start_main_~MINVAL~0#1|) (< |v_ULTIMATE.start_main_~i~0#1_83| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) is different from false [2021-11-20 06:16:41,698 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_83| Int)) (or (< (select (store (let ((.cse2 (* |c_ULTIMATE.start_main_~i~0#1| 12))) (let ((.cse0 (let ((.cse3 (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|)) (.cse4 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse2 (- 8)))) (store .cse3 .cse4 (select .cse3 .cse4)))) (.cse1 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 12) .cse2))) (store .cse0 .cse1 (select .cse0 .cse1)))) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 4) (* |v_ULTIMATE.start_main_~i~0#1_83| 12)) 0) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 8)) |c_ULTIMATE.start_main_~MINVAL~0#1|) (< |v_ULTIMATE.start_main_~i~0#1_83| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) is different from false [2021-11-20 06:16:41,723 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 106 treesize of output 98 [2021-11-20 06:16:41,739 INFO L354 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2021-11-20 06:16:41,740 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 5021 treesize of output 4613 [2021-11-20 06:16:42,377 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 18 proven. 14 refuted. 0 times theorem prover too weak. 14 trivial. 2 not checked. [2021-11-20 06:16:42,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [312762667] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:16:42,378 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:16:42,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 30 [2021-11-20 06:16:42,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008315907] [2021-11-20 06:16:42,378 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:16:42,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-11-20 06:16:42,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:16:42,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-11-20 06:16:42,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=608, Unknown=2, NotChecked=106, Total=870 [2021-11-20 06:16:42,380 INFO L87 Difference]: Start difference. First operand 60 states and 65 transitions. Second operand has 30 states, 30 states have (on average 4.566666666666666) internal successors, (137), 30 states have internal predecessors, (137), 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) [2021-11-20 06:16:43,076 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_main_~i~0#1| 1) (= 2 |c_ULTIMATE.start_main_~MINVAL~0#1|) (= |c_ULTIMATE.start_main_~#volArray~0#1.offset| 0) (forall ((|v_ULTIMATE.start_main_~i~0#1_83| Int)) (or (< (select (store (let ((.cse2 (* |c_ULTIMATE.start_main_~i~0#1| 12))) (let ((.cse0 (let ((.cse3 (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|)) (.cse4 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse2 (- 8)))) (store .cse3 .cse4 (select .cse3 .cse4)))) (.cse1 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 12) .cse2))) (store .cse0 .cse1 (select .cse0 .cse1)))) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 4) (* |v_ULTIMATE.start_main_~i~0#1_83| 12)) 0) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 8)) |c_ULTIMATE.start_main_~MINVAL~0#1|) (< |v_ULTIMATE.start_main_~i~0#1_83| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) (= (let ((.cse7 (* |c_ULTIMATE.start_main_~i~0#1| 12))) (select (let ((.cse5 (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|)) (.cse8 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 12) .cse7))) (store (let ((.cse6 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse7 (- 8)))) (store .cse5 .cse6 (select .cse5 .cse6))) .cse8 (select .cse5 .cse8))) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 4) .cse7))) 0)) is different from false [2021-11-20 06:16:43,532 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_main_~i~0#1| 1) (forall ((|v_ULTIMATE.start_main_~i~0#1_83| Int)) (or (< (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 4) (* |v_ULTIMATE.start_main_~i~0#1_83| 12)) 0) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 8)) |c_ULTIMATE.start_main_~MINVAL~0#1|) (< |v_ULTIMATE.start_main_~i~0#1_83| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) (= 2 |c_ULTIMATE.start_main_~MINVAL~0#1|) (= |c_ULTIMATE.start_main_~#volArray~0#1.offset| 0) (= (let ((.cse2 (* |c_ULTIMATE.start_main_~i~0#1| 12))) (select (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|)) (.cse3 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 12) .cse2))) (store (let ((.cse1 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse2 (- 8)))) (store .cse0 .cse1 (select .cse0 .cse1))) .cse3 (select .cse0 .cse3))) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 4) .cse2))) 0)) is different from false [2021-11-20 06:16:44,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:16:44,609 INFO L93 Difference]: Finished difference Result 77 states and 83 transitions. [2021-11-20 06:16:44,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 06:16:44,610 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.566666666666666) internal successors, (137), 30 states have internal predecessors, (137), 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 59 [2021-11-20 06:16:44,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:16:44,611 INFO L225 Difference]: With dead ends: 77 [2021-11-20 06:16:44,611 INFO L226 Difference]: Without dead ends: 67 [2021-11-20 06:16:44,612 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 110 SyntacticMatches, 5 SemanticMatches, 37 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=256, Invalid=946, Unknown=4, NotChecked=276, Total=1482 [2021-11-20 06:16:44,613 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 85 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 179 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:16:44,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 169 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 239 Invalid, 0 Unknown, 179 Unchecked, 0.2s Time] [2021-11-20 06:16:44,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-11-20 06:16:44,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 60. [2021-11-20 06:16:44,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.0847457627118644) internal successors, (64), 59 states have internal predecessors, (64), 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) [2021-11-20 06:16:44,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2021-11-20 06:16:44,622 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 59 [2021-11-20 06:16:44,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:16:44,623 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2021-11-20 06:16:44,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 4.566666666666666) internal successors, (137), 30 states have internal predecessors, (137), 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) [2021-11-20 06:16:44,623 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2021-11-20 06:16:44,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-20 06:16:44,624 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:16:44,625 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:16:44,653 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-20 06:16:44,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:16:44,847 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:16:44,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:16:44,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1432810746, now seen corresponding path program 5 times [2021-11-20 06:16:44,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:16:44,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028001181] [2021-11-20 06:16:44,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:16:44,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:16:44,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:16:45,680 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 6 proven. 41 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 06:16:45,681 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:16:45,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028001181] [2021-11-20 06:16:45,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028001181] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:16:45,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278348373] [2021-11-20 06:16:45,681 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-20 06:16:45,681 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:16:45,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:16:45,682 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:16:45,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-20 06:16:45,808 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-11-20 06:16:45,808 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:16:45,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-20 06:16:45,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:16:45,921 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 20 treesize of output 16 [2021-11-20 06:16:45,949 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 40 [2021-11-20 06:16:45,994 INFO L354 Elim1Store]: treesize reduction 192, result has 13.1 percent of original size [2021-11-20 06:16:45,995 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 72 treesize of output 74 [2021-11-20 06:16:46,033 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-11-20 06:16:46,033 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 47 treesize of output 31 [2021-11-20 06:16:46,102 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-11-20 06:16:46,102 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 26 treesize of output 25 [2021-11-20 06:16:46,150 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 68 [2021-11-20 06:16:46,230 INFO L354 Elim1Store]: treesize reduction 495, result has 10.0 percent of original size [2021-11-20 06:16:46,230 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 118 treesize of output 121 [2021-11-20 06:16:46,267 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-20 06:16:46,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:16:46,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:16:46,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:16:46,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:16:46,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:16:46,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:16:46,290 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 28 [2021-11-20 06:16:46,383 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-20 06:16:46,384 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 34 [2021-11-20 06:16:46,434 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 75 [2021-11-20 06:16:46,567 INFO L354 Elim1Store]: treesize reduction 690, result has 9.1 percent of original size [2021-11-20 06:16:46,567 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 125 treesize of output 138 [2021-11-20 06:16:46,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:16:46,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:16:46,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:16:46,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:16:46,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:16:46,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:16:46,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:16:46,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:16:46,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:16:46,611 INFO L354 Elim1Store]: treesize reduction 14, result has 6.7 percent of original size [2021-11-20 06:16:46,611 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 35 [2021-11-20 06:16:46,906 INFO L354 Elim1Store]: treesize reduction 147, result has 17.4 percent of original size [2021-11-20 06:16:46,906 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 47 treesize of output 52 [2021-11-20 06:16:46,984 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 85 [2021-11-20 06:16:47,155 INFO L354 Elim1Store]: treesize reduction 968, result has 7.2 percent of original size [2021-11-20 06:16:47,156 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 147 [2021-11-20 06:16:47,203 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-20 06:16:47,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:16:47,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:16:47,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:16:47,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:16:47,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:16:47,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:16:47,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:16:47,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:16:47,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:16:47,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:16:47,240 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 111 treesize of output 61 [2021-11-20 06:16:47,391 INFO L354 Elim1Store]: treesize reduction 218, result has 15.5 percent of original size [2021-11-20 06:16:47,392 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 56 treesize of output 64 [2021-11-20 06:16:47,487 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 95 [2021-11-20 06:16:47,736 INFO L354 Elim1Store]: treesize reduction 1170, result has 8.5 percent of original size [2021-11-20 06:16:47,736 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 35 case distinctions, treesize of input 145 treesize of output 187 [2021-11-20 06:16:47,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:16:47,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:16:47,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:16:47,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:16:47,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:16:47,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:16:47,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:16:47,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:16:47,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:16:47,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:16:47,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:16:47,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:16:47,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:16:47,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:16:47,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:16:47,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:16:47,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:16:47,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:16:47,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:16:47,987 INFO L354 Elim1Store]: treesize reduction 24, result has 29.4 percent of original size [2021-11-20 06:16:47,987 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 19 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 2 case distinctions, treesize of input 140 treesize of output 89 [2021-11-20 06:16:48,975 INFO L354 Elim1Store]: treesize reduction 144, result has 0.7 percent of original size [2021-11-20 06:16:48,976 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 79 treesize of output 37 [2021-11-20 06:16:49,018 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 6 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:16:49,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:16:49,447 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 15 [2021-11-20 06:16:49,449 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2021-11-20 06:16:49,566 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-20 06:16:49,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [278348373] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:16:49,566 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:16:49,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 22, 11] total 39 [2021-11-20 06:16:49,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157022190] [2021-11-20 06:16:49,567 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:16:49,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-11-20 06:16:49,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:16:49,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-11-20 06:16:49,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=1299, Unknown=0, NotChecked=0, Total=1482 [2021-11-20 06:16:49,570 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand has 39 states, 39 states have (on average 4.051282051282051) internal successors, (158), 39 states have internal predecessors, (158), 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) [2021-11-20 06:16:50,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:16:50,945 INFO L93 Difference]: Finished difference Result 164 states and 178 transitions. [2021-11-20 06:16:50,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-11-20 06:16:50,946 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 4.051282051282051) internal successors, (158), 39 states have internal predecessors, (158), 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 59 [2021-11-20 06:16:50,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:16:50,949 INFO L225 Difference]: With dead ends: 164 [2021-11-20 06:16:50,949 INFO L226 Difference]: Without dead ends: 154 [2021-11-20 06:16:50,951 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 93 SyntacticMatches, 24 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1629 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=504, Invalid=3528, Unknown=0, NotChecked=0, Total=4032 [2021-11-20 06:16:50,952 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 146 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 131 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 06:16:50,952 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 411 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 435 Invalid, 0 Unknown, 131 Unchecked, 0.3s Time] [2021-11-20 06:16:50,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-11-20 06:16:50,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 66. [2021-11-20 06:16:50,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.0769230769230769) internal successors, (70), 65 states have internal predecessors, (70), 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) [2021-11-20 06:16:50,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2021-11-20 06:16:50,964 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 59 [2021-11-20 06:16:50,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:16:50,964 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2021-11-20 06:16:50,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 4.051282051282051) internal successors, (158), 39 states have internal predecessors, (158), 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) [2021-11-20 06:16:50,965 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2021-11-20 06:16:50,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-20 06:16:50,966 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:16:50,966 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:16:51,010 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-20 06:16:51,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-20 06:16:51,171 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:16:51,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:16:51,171 INFO L85 PathProgramCache]: Analyzing trace with hash 757222925, now seen corresponding path program 6 times [2021-11-20 06:16:51,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:16:51,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747427463] [2021-11-20 06:16:51,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:16:51,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:16:51,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:16:51,959 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 8 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:16:51,960 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:16:51,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747427463] [2021-11-20 06:16:51,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747427463] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:16:51,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169543839] [2021-11-20 06:16:51,960 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-20 06:16:51,961 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:16:51,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:16:51,974 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:16:51,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-20 06:16:52,080 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-11-20 06:16:52,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:16:52,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-20 06:16:52,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:16:52,421 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2021-11-20 06:16:52,460 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 40 [2021-11-20 06:16:52,496 INFO L354 Elim1Store]: treesize reduction 192, result has 13.1 percent of original size [2021-11-20 06:16:52,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 72 treesize of output 74 [2021-11-20 06:16:52,525 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-11-20 06:16:52,526 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 47 treesize of output 31 [2021-11-20 06:16:52,648 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-11-20 06:16:52,649 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 26 treesize of output 25 [2021-11-20 06:16:52,716 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 71 [2021-11-20 06:16:52,803 INFO L354 Elim1Store]: treesize reduction 495, result has 10.0 percent of original size [2021-11-20 06:16:52,803 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 121 treesize of output 124 [2021-11-20 06:16:52,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:16:52,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:16:52,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:16:52,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:16:52,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:16:52,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:16:52,842 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 38 [2021-11-20 06:16:52,981 INFO L354 Elim1Store]: treesize reduction 88, result has 20.0 percent of original size [2021-11-20 06:16:52,981 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 43 [2021-11-20 06:16:53,077 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 81 [2021-11-20 06:16:53,216 INFO L354 Elim1Store]: treesize reduction 744, result has 9.2 percent of original size [2021-11-20 06:16:53,216 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 131 treesize of output 147 [2021-11-20 06:16:53,256 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-20 06:16:53,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:16:53,277 INFO L354 Elim1Store]: treesize reduction 153, result has 0.6 percent of original size [2021-11-20 06:16:53,277 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 96 treesize of output 46 [2021-11-20 06:16:54,637 INFO L354 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2021-11-20 06:16:54,637 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 64 treesize of output 34 [2021-11-20 06:16:54,684 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 11 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:16:54,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:17:05,480 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 15 [2021-11-20 06:17:05,482 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2021-11-20 06:17:05,699 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 8 proven. 54 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-20 06:17:05,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169543839] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:17:05,700 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:17:05,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 22, 14] total 51 [2021-11-20 06:17:05,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376996050] [2021-11-20 06:17:05,700 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:17:05,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2021-11-20 06:17:05,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:17:05,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-11-20 06:17:05,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=2297, Unknown=0, NotChecked=0, Total=2550 [2021-11-20 06:17:05,704 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand has 51 states, 51 states have (on average 3.5098039215686274) internal successors, (179), 51 states have internal predecessors, (179), 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) [2021-11-20 06:17:43,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:17:43,439 INFO L93 Difference]: Finished difference Result 167 states and 180 transitions. [2021-11-20 06:17:43,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-11-20 06:17:43,440 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 3.5098039215686274) internal successors, (179), 51 states have internal predecessors, (179), 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 65 [2021-11-20 06:17:43,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:17:43,441 INFO L225 Difference]: With dead ends: 167 [2021-11-20 06:17:43,441 INFO L226 Difference]: Without dead ends: 157 [2021-11-20 06:17:43,444 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 106 SyntacticMatches, 14 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2558 ImplicationChecksByTransitivity, 49.0s TimeCoverageRelationStatistics Valid=1070, Invalid=7104, Unknown=16, NotChecked=0, Total=8190 [2021-11-20 06:17:43,445 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 230 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 1224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 245 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 203 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-20 06:17:43,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [230 Valid, 446 Invalid, 1224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [245 Valid, 776 Invalid, 0 Unknown, 203 Unchecked, 0.6s Time] [2021-11-20 06:17:43,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-11-20 06:17:43,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 72. [2021-11-20 06:17:43,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.0704225352112675) internal successors, (76), 71 states have internal predecessors, (76), 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) [2021-11-20 06:17:43,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 76 transitions. [2021-11-20 06:17:43,463 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 76 transitions. Word has length 65 [2021-11-20 06:17:43,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:17:43,464 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 76 transitions. [2021-11-20 06:17:43,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 3.5098039215686274) internal successors, (179), 51 states have internal predecessors, (179), 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) [2021-11-20 06:17:43,465 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 76 transitions. [2021-11-20 06:17:43,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-20 06:17:43,466 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:17:43,466 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:17:43,497 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-20 06:17:43,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:17:43,668 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:17:43,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:17:43,669 INFO L85 PathProgramCache]: Analyzing trace with hash 72174816, now seen corresponding path program 7 times [2021-11-20 06:17:43,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:17:43,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323197501] [2021-11-20 06:17:43,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:17:43,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:17:43,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:17:43,899 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-20 06:17:43,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:17:43,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323197501] [2021-11-20 06:17:43,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323197501] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:17:43,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288840188] [2021-11-20 06:17:43,900 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-20 06:17:43,900 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:17:43,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:17:43,903 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:17:43,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-20 06:17:43,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:17:43,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-20 06:17:43,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:17:44,029 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-20 06:17:44,041 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 58 [2021-11-20 06:17:44,082 INFO L354 Elim1Store]: treesize reduction 192, result has 13.1 percent of original size [2021-11-20 06:17:44,083 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 147 treesize of output 137 [2021-11-20 06:17:44,096 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-20 06:17:44,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:17:44,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:17:44,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:17:44,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 22 [2021-11-20 06:17:44,436 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 57 treesize of output 47 [2021-11-20 06:17:44,441 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-11-20 06:17:44,441 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 204 treesize of output 164 [2021-11-20 06:17:44,482 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-20 06:17:44,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:17:44,625 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 15 [2021-11-20 06:17:44,627 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2021-11-20 06:17:44,686 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-20 06:17:44,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288840188] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:17:44,686 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:17:44,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 20 [2021-11-20 06:17:44,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463245536] [2021-11-20 06:17:44,687 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:17:44,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-20 06:17:44,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:17:44,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-20 06:17:44,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2021-11-20 06:17:44,688 INFO L87 Difference]: Start difference. First operand 72 states and 76 transitions. Second operand has 20 states, 20 states have (on average 5.6) internal successors, (112), 20 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:17:45,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:17:45,670 INFO L93 Difference]: Finished difference Result 131 states and 143 transitions. [2021-11-20 06:17:45,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-20 06:17:45,670 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.6) internal successors, (112), 20 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-20 06:17:45,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:17:45,671 INFO L225 Difference]: With dead ends: 131 [2021-11-20 06:17:45,671 INFO L226 Difference]: Without dead ends: 129 [2021-11-20 06:17:45,672 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 131 SyntacticMatches, 9 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 591 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=296, Invalid=1960, Unknown=0, NotChecked=0, Total=2256 [2021-11-20 06:17:45,673 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 137 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 862 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-20 06:17:45,673 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 230 Invalid, 949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 862 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-20 06:17:45,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-11-20 06:17:45,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 78. [2021-11-20 06:17:45,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.077922077922078) internal successors, (83), 77 states have internal predecessors, (83), 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) [2021-11-20 06:17:45,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 83 transitions. [2021-11-20 06:17:45,684 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 83 transitions. Word has length 71 [2021-11-20 06:17:45,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:17:45,685 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 83 transitions. [2021-11-20 06:17:45,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.6) internal successors, (112), 20 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:17:45,685 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 83 transitions. [2021-11-20 06:17:45,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-20 06:17:45,687 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:17:45,687 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:17:45,711 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-20 06:17:45,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:17:45,891 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:17:45,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:17:45,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1552195955, now seen corresponding path program 8 times [2021-11-20 06:17:45,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:17:45,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402071701] [2021-11-20 06:17:45,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:17:45,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:17:45,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:17:46,382 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 83 proven. 37 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-20 06:17:46,382 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:17:46,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402071701] [2021-11-20 06:17:46,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402071701] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:17:46,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928240349] [2021-11-20 06:17:46,382 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 06:17:46,383 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:17:46,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:17:46,390 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:17:46,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-20 06:17:46,457 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 06:17:46,457 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:17:46,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-20 06:17:46,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:17:47,482 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 114 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-20 06:17:47,483 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:17:47,949 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 114 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-20 06:17:47,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [928240349] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:17:47,949 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:17:47,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 14] total 40 [2021-11-20 06:17:47,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740136197] [2021-11-20 06:17:47,950 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:17:47,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-11-20 06:17:47,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:17:47,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-11-20 06:17:47,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=382, Invalid=1178, Unknown=0, NotChecked=0, Total=1560 [2021-11-20 06:17:47,952 INFO L87 Difference]: Start difference. First operand 78 states and 83 transitions. Second operand has 40 states, 40 states have (on average 4.875) internal successors, (195), 40 states have internal predecessors, (195), 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) [2021-11-20 06:17:48,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:17:48,512 INFO L93 Difference]: Finished difference Result 216 states and 231 transitions. [2021-11-20 06:17:48,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-20 06:17:48,513 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 4.875) internal successors, (195), 40 states have internal predecessors, (195), 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 77 [2021-11-20 06:17:48,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:17:48,514 INFO L225 Difference]: With dead ends: 216 [2021-11-20 06:17:48,514 INFO L226 Difference]: Without dead ends: 99 [2021-11-20 06:17:48,515 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 729 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=546, Invalid=1616, Unknown=0, NotChecked=0, Total=2162 [2021-11-20 06:17:48,519 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 619 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 619 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 06:17:48,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [619 Valid, 170 Invalid, 554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-20 06:17:48,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-11-20 06:17:48,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 90. [2021-11-20 06:17:48,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 1.0674157303370786) internal successors, (95), 89 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:17:48,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 95 transitions. [2021-11-20 06:17:48,538 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 95 transitions. Word has length 77 [2021-11-20 06:17:48,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:17:48,538 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 95 transitions. [2021-11-20 06:17:48,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 4.875) internal successors, (195), 40 states have internal predecessors, (195), 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) [2021-11-20 06:17:48,539 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 95 transitions. [2021-11-20 06:17:48,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-20 06:17:48,547 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:17:48,547 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:17:48,583 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-11-20 06:17:48,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:17:48,763 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:17:48,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:17:48,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1369982430, now seen corresponding path program 9 times [2021-11-20 06:17:48,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:17:48,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97120118] [2021-11-20 06:17:48,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:17:48,763 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:17:48,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:17:49,123 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 43 proven. 99 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-20 06:17:49,124 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:17:49,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97120118] [2021-11-20 06:17:49,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97120118] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:17:49,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978718759] [2021-11-20 06:17:49,124 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 06:17:49,125 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:17:49,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:17:49,126 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:17:49,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-20 06:17:49,447 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-11-20 06:17:49,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:17:49,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-20 06:17:49,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:17:49,570 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-20 06:17:49,601 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 61 [2021-11-20 06:17:49,637 INFO L354 Elim1Store]: treesize reduction 312, result has 11.6 percent of original size [2021-11-20 06:17:49,637 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 111 treesize of output 104 [2021-11-20 06:17:49,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:17:49,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:17:49,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:17:49,677 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 24 [2021-11-20 06:17:49,741 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-11-20 06:17:49,741 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 26 treesize of output 25 [2021-11-20 06:17:49,781 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 71 [2021-11-20 06:17:49,853 INFO L354 Elim1Store]: treesize reduction 495, result has 10.0 percent of original size [2021-11-20 06:17:49,853 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 121 treesize of output 124 [2021-11-20 06:17:49,879 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-20 06:17:49,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:17:49,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:17:49,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:17:49,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:17:49,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:17:49,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:17:49,935 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 43 [2021-11-20 06:17:50,869 INFO L354 Elim1Store]: treesize reduction 14, result has 6.7 percent of original size [2021-11-20 06:17:50,869 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 49 treesize of output 28 [2021-11-20 06:17:50,900 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 42 proven. 85 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-20 06:17:50,900 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:17:51,762 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_192| Int)) (or (< (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_192| 12) (- 4)) 0) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 20)) |c_ULTIMATE.start_main_~MINVAL~0#1|) (< |v_ULTIMATE.start_main_~i~0#1_192| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) is different from false [2021-11-20 06:17:52,300 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_192| Int)) (or (< (select (store (let ((.cse2 (* |c_ULTIMATE.start_main_~i~0#1| 12))) (let ((.cse0 (let ((.cse3 (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|)) (.cse4 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse2 (- 8)))) (store .cse3 .cse4 (select .cse3 .cse4)))) (.cse1 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 12) .cse2))) (store .cse0 .cse1 (select .cse0 .cse1)))) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_192| 12) (- 4)) 0) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 20)) |c_ULTIMATE.start_main_~MINVAL~0#1|) (< |v_ULTIMATE.start_main_~i~0#1_192| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) is different from false [2021-11-20 06:17:52,307 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 106 treesize of output 98 [2021-11-20 06:17:52,315 INFO L354 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2021-11-20 06:17:52,315 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 5021 treesize of output 4613 [2021-11-20 06:17:52,863 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 42 proven. 81 refuted. 0 times theorem prover too weak. 32 trivial. 4 not checked. [2021-11-20 06:17:52,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1978718759] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:17:52,864 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:17:52,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 42 [2021-11-20 06:17:52,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024675451] [2021-11-20 06:17:52,864 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:17:52,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2021-11-20 06:17:52,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:17:52,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-11-20 06:17:52,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=1341, Unknown=2, NotChecked=154, Total=1722 [2021-11-20 06:17:52,867 INFO L87 Difference]: Start difference. First operand 90 states and 95 transitions. Second operand has 42 states, 42 states have (on average 4.809523809523809) internal successors, (202), 42 states have internal predecessors, (202), 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) [2021-11-20 06:17:53,751 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse5 (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|))) (and (forall ((|v_ULTIMATE.start_main_~i~0#1_192| Int)) (or (< (select (store (let ((.cse2 (* |c_ULTIMATE.start_main_~i~0#1| 12))) (let ((.cse0 (let ((.cse3 (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|)) (.cse4 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse2 (- 8)))) (store .cse3 .cse4 (select .cse3 .cse4)))) (.cse1 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 12) .cse2))) (store .cse0 .cse1 (select .cse0 .cse1)))) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_192| 12) (- 4)) 0) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 20)) |c_ULTIMATE.start_main_~MINVAL~0#1|) (< |v_ULTIMATE.start_main_~i~0#1_192| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) (= 2 |c_ULTIMATE.start_main_~MINVAL~0#1|) (= (* 12 |c_ULTIMATE.start_main_~i~0#1|) 24) (= (select .cse5 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4))) 0) (= (let ((.cse7 (* |c_ULTIMATE.start_main_~i~0#1| 12))) (select (let ((.cse8 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 12) .cse7))) (store (let ((.cse6 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse7 (- 8)))) (store .cse5 .cse6 (select .cse5 .cse6))) .cse8 (select .cse5 .cse8))) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 4) .cse7))) 0))) is different from false [2021-11-20 06:17:54,261 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_main_~i~0#1_192| Int)) (or (< (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_192| 12) (- 4)) 0) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 20)) |c_ULTIMATE.start_main_~MINVAL~0#1|) (< |v_ULTIMATE.start_main_~i~0#1_192| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) (= 2 |c_ULTIMATE.start_main_~MINVAL~0#1|) (= (* 12 |c_ULTIMATE.start_main_~i~0#1|) 24) (= (let ((.cse2 (* |c_ULTIMATE.start_main_~i~0#1| 12))) (select (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|)) (.cse3 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 12) .cse2))) (store (let ((.cse1 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse2 (- 8)))) (store .cse0 .cse1 (select .cse0 .cse1))) .cse3 (select .cse0 .cse3))) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 4) .cse2))) 0)) is different from false [2021-11-20 06:17:55,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:17:55,531 INFO L93 Difference]: Finished difference Result 106 states and 112 transitions. [2021-11-20 06:17:55,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-20 06:17:55,532 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 4.809523809523809) internal successors, (202), 42 states have internal predecessors, (202), 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 89 [2021-11-20 06:17:55,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:17:55,532 INFO L225 Difference]: With dead ends: 106 [2021-11-20 06:17:55,532 INFO L226 Difference]: Without dead ends: 96 [2021-11-20 06:17:55,533 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 157 SyntacticMatches, 8 SemanticMatches, 54 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 957 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=401, Invalid=2263, Unknown=4, NotChecked=412, Total=3080 [2021-11-20 06:17:55,534 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 166 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 677 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 1027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 319 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 06:17:55,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [166 Valid, 413 Invalid, 1027 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 677 Invalid, 0 Unknown, 319 Unchecked, 0.4s Time] [2021-11-20 06:17:55,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-11-20 06:17:55,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 90. [2021-11-20 06:17:55,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 1.0561797752808988) internal successors, (94), 89 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:17:55,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 94 transitions. [2021-11-20 06:17:55,545 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 94 transitions. Word has length 89 [2021-11-20 06:17:55,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:17:55,545 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 94 transitions. [2021-11-20 06:17:55,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 4.809523809523809) internal successors, (202), 42 states have internal predecessors, (202), 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) [2021-11-20 06:17:55,546 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 94 transitions. [2021-11-20 06:17:55,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-20 06:17:55,547 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:17:55,547 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:17:55,570 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-20 06:17:55,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:17:55,755 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:17:55,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:17:55,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1763009440, now seen corresponding path program 10 times [2021-11-20 06:17:55,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:17:55,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994040307] [2021-11-20 06:17:55,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:17:55,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:17:55,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:17:57,343 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 12 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:17:57,343 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:17:57,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994040307] [2021-11-20 06:17:57,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994040307] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:17:57,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159947346] [2021-11-20 06:17:57,344 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-20 06:17:57,344 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:17:57,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:17:57,356 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:17:57,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-20 06:17:57,421 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-20 06:17:57,421 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:17:57,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 49 conjunts are in the unsatisfiable core [2021-11-20 06:17:57,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:17:57,643 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 20 treesize of output 16 [2021-11-20 06:17:57,694 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 40 [2021-11-20 06:17:57,730 INFO L354 Elim1Store]: treesize reduction 192, result has 13.1 percent of original size [2021-11-20 06:17:57,731 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 72 treesize of output 74 [2021-11-20 06:17:57,777 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-11-20 06:17:57,777 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 45 treesize of output 25 [2021-11-20 06:17:57,880 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-11-20 06:17:57,881 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 26 treesize of output 25 [2021-11-20 06:17:57,920 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 68 [2021-11-20 06:17:57,979 INFO L354 Elim1Store]: treesize reduction 495, result has 10.0 percent of original size [2021-11-20 06:17:57,979 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 118 treesize of output 121 [2021-11-20 06:17:58,001 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-20 06:17:58,020 INFO L354 Elim1Store]: treesize reduction 99, result has 1.0 percent of original size [2021-11-20 06:17:58,020 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 88 treesize of output 52 [2021-11-20 06:17:58,098 INFO L354 Elim1Store]: treesize reduction 88, result has 20.0 percent of original size [2021-11-20 06:17:58,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 40 [2021-11-20 06:17:58,149 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 78 [2021-11-20 06:17:58,252 INFO L354 Elim1Store]: treesize reduction 744, result has 9.2 percent of original size [2021-11-20 06:17:58,252 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 128 treesize of output 144 [2021-11-20 06:17:58,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:17:58,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:17:58,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:17:58,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:17:58,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:17:58,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:17:58,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:17:58,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:17:58,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:17:58,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:17:58,271 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 51 [2021-11-20 06:17:58,418 INFO L354 Elim1Store]: treesize reduction 132, result has 17.5 percent of original size [2021-11-20 06:17:58,419 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 47 treesize of output 46 [2021-11-20 06:17:58,479 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 86 [2021-11-20 06:17:58,647 INFO L354 Elim1Store]: treesize reduction 897, result has 8.5 percent of original size [2021-11-20 06:17:58,648 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 136 treesize of output 155 [2021-11-20 06:17:58,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:17:58,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:17:58,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:17:58,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:17:58,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:17:58,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:17:58,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:17:58,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:17:58,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:17:58,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:17:58,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:17:58,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:17:58,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:17:58,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:17:58,732 INFO L354 Elim1Store]: treesize reduction 14, result has 6.7 percent of original size [2021-11-20 06:17:58,733 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 14 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 1 case distinctions, treesize of input 92 treesize of output 48 [2021-11-20 06:18:04,134 INFO L354 Elim1Store]: treesize reduction 218, result has 15.5 percent of original size [2021-11-20 06:18:04,134 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 62 treesize of output 64 [2021-11-20 06:18:04,971 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 96 [2021-11-20 06:18:05,149 INFO L354 Elim1Store]: treesize reduction 1193, result has 6.7 percent of original size [2021-11-20 06:18:05,149 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 35 case distinctions, treesize of input 146 treesize of output 161 [2021-11-20 06:18:05,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:05,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:05,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:05,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:05,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:05,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:05,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:05,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:05,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:05,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:05,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:05,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:05,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:05,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:05,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:05,216 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 64 [2021-11-20 06:18:06,033 INFO L354 Elim1Store]: treesize reduction 301, result has 14.0 percent of original size [2021-11-20 06:18:06,033 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 71 treesize of output 76 [2021-11-20 06:18:06,164 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 103 [2021-11-20 06:18:06,469 INFO L354 Elim1Store]: treesize reduction 1421, result has 6.9 percent of original size [2021-11-20 06:18:06,470 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 10 new quantified variables, introduced 44 case distinctions, treesize of input 153 treesize of output 184 [2021-11-20 06:18:06,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:06,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:06,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:06,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:06,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:06,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:06,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:06,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:06,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:06,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:06,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:06,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:06,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:06,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:06,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:06,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:06,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:06,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:06,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:06,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:06,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:06,516 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 123 treesize of output 62 [2021-11-20 06:18:06,873 INFO L354 Elim1Store]: treesize reduction 396, result has 12.8 percent of original size [2021-11-20 06:18:06,873 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 80 treesize of output 88 [2021-11-20 06:18:06,970 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 138 treesize of output 113 [2021-11-20 06:18:07,380 INFO L354 Elim1Store]: treesize reduction 1650, result has 7.7 percent of original size [2021-11-20 06:18:07,381 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 11 new quantified variables, introduced 54 case distinctions, treesize of input 163 treesize of output 221 [2021-11-20 06:18:07,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:07,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:07,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:07,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:07,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:07,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:07,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:07,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:07,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:07,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:07,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:07,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:07,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:07,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:07,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:07,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:07,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:07,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:07,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:07,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:07,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:07,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:07,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:07,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:07,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:07,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:07,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:07,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:07,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:07,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:07,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:07,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:07,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:07,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:07,600 INFO L354 Elim1Store]: treesize reduction 24, result has 29.4 percent of original size [2021-11-20 06:18:07,600 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 34 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 2 case distinctions, treesize of input 116 treesize of output 71 [2021-11-20 06:18:09,795 INFO L354 Elim1Store]: treesize reduction 288, result has 0.3 percent of original size [2021-11-20 06:18:09,796 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 103 treesize of output 43 [2021-11-20 06:18:09,845 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 12 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:18:09,845 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:18:10,791 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 15 [2021-11-20 06:18:10,793 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2021-11-20 06:18:11,008 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 12 proven. 117 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-20 06:18:11,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159947346] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:18:11,008 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:18:11,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 30, 15] total 65 [2021-11-20 06:18:11,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924508356] [2021-11-20 06:18:11,009 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:18:11,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2021-11-20 06:18:11,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:18:11,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2021-11-20 06:18:11,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=326, Invalid=3832, Unknown=2, NotChecked=0, Total=4160 [2021-11-20 06:18:11,012 INFO L87 Difference]: Start difference. First operand 90 states and 94 transitions. Second operand has 65 states, 65 states have (on average 3.6923076923076925) internal successors, (240), 65 states have internal predecessors, (240), 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) [2021-11-20 06:18:48,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:18:48,332 INFO L93 Difference]: Finished difference Result 248 states and 263 transitions. [2021-11-20 06:18:48,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2021-11-20 06:18:48,332 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 3.6923076923076925) internal successors, (240), 65 states have internal predecessors, (240), 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 89 [2021-11-20 06:18:48,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:18:48,334 INFO L225 Difference]: With dead ends: 248 [2021-11-20 06:18:48,334 INFO L226 Difference]: Without dead ends: 238 [2021-11-20 06:18:48,339 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 134 SyntacticMatches, 33 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5214 ImplicationChecksByTransitivity, 46.2s TimeCoverageRelationStatistics Valid=1137, Invalid=12656, Unknown=13, NotChecked=0, Total=13806 [2021-11-20 06:18:48,340 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 335 mSDsluCounter, 918 mSDsCounter, 0 mSdLazyCounter, 1029 mSolverCounterSat, 302 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 968 SdHoareTripleChecker+Invalid, 1941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 302 IncrementalHoareTripleChecker+Valid, 1029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 610 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-20 06:18:48,340 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [335 Valid, 968 Invalid, 1941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [302 Valid, 1029 Invalid, 0 Unknown, 610 Unchecked, 0.8s Time] [2021-11-20 06:18:48,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2021-11-20 06:18:48,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 96. [2021-11-20 06:18:48,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 1.0526315789473684) internal successors, (100), 95 states have internal predecessors, (100), 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) [2021-11-20 06:18:48,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 100 transitions. [2021-11-20 06:18:48,351 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 100 transitions. Word has length 89 [2021-11-20 06:18:48,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:18:48,352 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 100 transitions. [2021-11-20 06:18:48,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 3.6923076923076925) internal successors, (240), 65 states have internal predecessors, (240), 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) [2021-11-20 06:18:48,352 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 100 transitions. [2021-11-20 06:18:48,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-20 06:18:48,353 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:18:48,353 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:18:48,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-20 06:18:48,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-20 06:18:48,559 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:18:48,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:18:48,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1153978611, now seen corresponding path program 11 times [2021-11-20 06:18:48,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:18:48,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796035413] [2021-11-20 06:18:48,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:18:48,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:18:48,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:49,092 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 14 proven. 185 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:18:49,092 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:18:49,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796035413] [2021-11-20 06:18:49,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796035413] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:18:49,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498795573] [2021-11-20 06:18:49,093 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-20 06:18:49,093 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:18:49,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:18:49,094 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:18:49,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-20 06:18:49,360 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-11-20 06:18:49,360 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:18:49,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 40 conjunts are in the unsatisfiable core [2021-11-20 06:18:49,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:18:49,561 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 20 treesize of output 16 [2021-11-20 06:18:49,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 40 [2021-11-20 06:18:49,619 INFO L354 Elim1Store]: treesize reduction 192, result has 13.1 percent of original size [2021-11-20 06:18:49,619 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 72 treesize of output 74 [2021-11-20 06:18:49,633 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-20 06:18:49,642 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-11-20 06:18:49,642 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 45 treesize of output 25 [2021-11-20 06:18:49,713 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-11-20 06:18:49,714 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 26 treesize of output 25 [2021-11-20 06:18:49,749 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 68 [2021-11-20 06:18:49,806 INFO L354 Elim1Store]: treesize reduction 495, result has 10.0 percent of original size [2021-11-20 06:18:49,807 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 118 treesize of output 121 [2021-11-20 06:18:49,825 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-20 06:18:49,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:49,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:49,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:49,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:49,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:49,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:49,855 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 40 [2021-11-20 06:18:49,934 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-20 06:18:49,934 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 37 [2021-11-20 06:18:49,985 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 75 [2021-11-20 06:18:50,077 INFO L354 Elim1Store]: treesize reduction 690, result has 9.1 percent of original size [2021-11-20 06:18:50,077 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 125 treesize of output 138 [2021-11-20 06:18:50,097 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-20 06:18:50,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:50,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:50,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:50,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:50,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:50,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:50,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:50,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:50,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:50,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:50,132 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 43 [2021-11-20 06:18:50,219 INFO L354 Elim1Store]: treesize reduction 132, result has 17.5 percent of original size [2021-11-20 06:18:50,219 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 44 treesize of output 49 [2021-11-20 06:18:50,287 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 85 [2021-11-20 06:18:50,447 INFO L354 Elim1Store]: treesize reduction 897, result has 8.5 percent of original size [2021-11-20 06:18:50,448 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 158 [2021-11-20 06:18:50,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:50,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:50,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:50,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:50,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:50,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:50,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:50,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:50,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:50,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:50,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:50,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:50,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:50,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:18:50,533 INFO L354 Elim1Store]: treesize reduction 14, result has 6.7 percent of original size [2021-11-20 06:18:50,534 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 14 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 1 case distinctions, treesize of input 84 treesize of output 47 [2021-11-20 06:18:57,057 INFO L354 Elim1Store]: treesize reduction 81, result has 1.2 percent of original size [2021-11-20 06:18:57,057 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 67 treesize of output 34 [2021-11-20 06:18:57,075 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 14 proven. 170 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-20 06:18:57,075 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:18:57,637 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 15 [2021-11-20 06:18:57,638 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2021-11-20 06:18:57,859 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 14 proven. 155 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-20 06:18:57,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [498795573] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:18:57,859 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:18:57,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 24, 16] total 53 [2021-11-20 06:18:57,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107615873] [2021-11-20 06:18:57,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:18:57,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2021-11-20 06:18:57,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:18:57,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-11-20 06:18:57,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=2522, Unknown=3, NotChecked=0, Total=2756 [2021-11-20 06:18:57,863 INFO L87 Difference]: Start difference. First operand 96 states and 100 transitions. Second operand has 53 states, 53 states have (on average 4.69811320754717) internal successors, (249), 53 states have internal predecessors, (249), 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) [2021-11-20 06:19:10,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:19:10,815 INFO L93 Difference]: Finished difference Result 174 states and 182 transitions. [2021-11-20 06:19:10,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-11-20 06:19:10,815 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 4.69811320754717) internal successors, (249), 53 states have internal predecessors, (249), 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 95 [2021-11-20 06:19:10,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:19:10,816 INFO L225 Difference]: With dead ends: 174 [2021-11-20 06:19:10,816 INFO L226 Difference]: Without dead ends: 164 [2021-11-20 06:19:10,818 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 159 SyntacticMatches, 20 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2256 ImplicationChecksByTransitivity, 19.1s TimeCoverageRelationStatistics Valid=569, Invalid=5745, Unknown=6, NotChecked=0, Total=6320 [2021-11-20 06:19:10,819 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 183 mSDsluCounter, 712 mSDsCounter, 0 mSdLazyCounter, 612 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 754 SdHoareTripleChecker+Invalid, 1006 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 262 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 06:19:10,819 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 754 Invalid, 1006 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 612 Invalid, 0 Unknown, 262 Unchecked, 0.3s Time] [2021-11-20 06:19:10,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-11-20 06:19:10,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 102. [2021-11-20 06:19:10,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 1.0495049504950495) internal successors, (106), 101 states have internal predecessors, (106), 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) [2021-11-20 06:19:10,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 106 transitions. [2021-11-20 06:19:10,828 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 106 transitions. Word has length 95 [2021-11-20 06:19:10,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:19:10,828 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 106 transitions. [2021-11-20 06:19:10,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 4.69811320754717) internal successors, (249), 53 states have internal predecessors, (249), 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) [2021-11-20 06:19:10,828 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 106 transitions. [2021-11-20 06:19:10,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-20 06:19:10,829 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:19:10,829 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:19:10,855 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-11-20 06:19:11,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-20 06:19:11,037 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:19:11,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:19:11,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1698493626, now seen corresponding path program 12 times [2021-11-20 06:19:11,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:19:11,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154983047] [2021-11-20 06:19:11,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:19:11,037 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:19:11,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:11,337 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 230 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-20 06:19:11,338 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:19:11,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154983047] [2021-11-20 06:19:11,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154983047] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:19:11,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246173410] [2021-11-20 06:19:11,339 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-20 06:19:11,339 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:19:11,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:19:11,341 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:19:11,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-20 06:19:11,594 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-11-20 06:19:11,595 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:19:11,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-20 06:19:11,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:19:11,679 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-20 06:19:11,693 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 58 [2021-11-20 06:19:11,724 INFO L354 Elim1Store]: treesize reduction 192, result has 13.1 percent of original size [2021-11-20 06:19:11,725 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 247 treesize of output 221 [2021-11-20 06:19:11,801 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-11-20 06:19:11,802 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 45 treesize of output 25 [2021-11-20 06:19:12,250 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 57 treesize of output 47 [2021-11-20 06:19:12,262 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-11-20 06:19:12,262 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 204 treesize of output 164 [2021-11-20 06:19:12,316 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 215 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-20 06:19:12,317 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:19:12,526 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 15 [2021-11-20 06:19:12,528 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2021-11-20 06:19:12,619 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 215 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-20 06:19:12,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1246173410] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:19:12,619 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:19:12,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 27 [2021-11-20 06:19:12,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420522150] [2021-11-20 06:19:12,619 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:19:12,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-20 06:19:12,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:19:12,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-20 06:19:12,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=629, Unknown=0, NotChecked=0, Total=702 [2021-11-20 06:19:12,621 INFO L87 Difference]: Start difference. First operand 102 states and 106 transitions. Second operand has 27 states, 27 states have (on average 5.777777777777778) internal successors, (156), 27 states have internal predecessors, (156), 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) [2021-11-20 06:19:14,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:19:14,363 INFO L93 Difference]: Finished difference Result 210 states and 224 transitions. [2021-11-20 06:19:14,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-11-20 06:19:14,363 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.777777777777778) internal successors, (156), 27 states have internal predecessors, (156), 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 101 [2021-11-20 06:19:14,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:19:14,364 INFO L225 Difference]: With dead ends: 210 [2021-11-20 06:19:14,364 INFO L226 Difference]: Without dead ends: 208 [2021-11-20 06:19:14,365 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 188 SyntacticMatches, 10 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2205 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=676, Invalid=6464, Unknown=0, NotChecked=0, Total=7140 [2021-11-20 06:19:14,366 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 249 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 1969 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 2124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 1969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-20 06:19:14,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [249 Valid, 425 Invalid, 2124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 1969 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-20 06:19:14,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-11-20 06:19:14,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 108. [2021-11-20 06:19:14,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 1.0560747663551402) internal successors, (113), 107 states have internal predecessors, (113), 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) [2021-11-20 06:19:14,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 113 transitions. [2021-11-20 06:19:14,378 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 113 transitions. Word has length 101 [2021-11-20 06:19:14,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:19:14,378 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 113 transitions. [2021-11-20 06:19:14,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 5.777777777777778) internal successors, (156), 27 states have internal predecessors, (156), 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) [2021-11-20 06:19:14,379 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 113 transitions. [2021-11-20 06:19:14,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-20 06:19:14,380 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:19:14,380 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:19:14,409 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-20 06:19:14,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-20 06:19:14,595 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:19:14,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:19:14,595 INFO L85 PathProgramCache]: Analyzing trace with hash 2062515033, now seen corresponding path program 13 times [2021-11-20 06:19:14,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:19:14,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229873715] [2021-11-20 06:19:14,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:19:14,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:19:14,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:15,171 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 203 proven. 64 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-20 06:19:15,171 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:19:15,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229873715] [2021-11-20 06:19:15,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229873715] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:19:15,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665099728] [2021-11-20 06:19:15,171 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-20 06:19:15,172 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:19:15,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:19:15,175 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:19:15,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-20 06:19:15,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:15,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-20 06:19:15,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:19:16,594 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 252 proven. 15 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-20 06:19:16,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:19:17,113 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 252 proven. 15 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-20 06:19:17,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1665099728] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:19:17,113 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:19:17,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 18] total 52 [2021-11-20 06:19:17,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142196854] [2021-11-20 06:19:17,114 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:19:17,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2021-11-20 06:19:17,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:19:17,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-11-20 06:19:17,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=635, Invalid=2017, Unknown=0, NotChecked=0, Total=2652 [2021-11-20 06:19:17,116 INFO L87 Difference]: Start difference. First operand 108 states and 113 transitions. Second operand has 52 states, 52 states have (on average 5.019230769230769) internal successors, (261), 52 states have internal predecessors, (261), 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) [2021-11-20 06:19:17,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:19:17,664 INFO L93 Difference]: Finished difference Result 294 states and 309 transitions. [2021-11-20 06:19:17,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-20 06:19:17,664 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 5.019230769230769) internal successors, (261), 52 states have internal predecessors, (261), 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 107 [2021-11-20 06:19:17,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:19:17,665 INFO L225 Difference]: With dead ends: 294 [2021-11-20 06:19:17,665 INFO L226 Difference]: Without dead ends: 129 [2021-11-20 06:19:17,666 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1314 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=852, Invalid=2688, Unknown=0, NotChecked=0, Total=3540 [2021-11-20 06:19:17,667 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 351 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 06:19:17,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [351 Valid, 357 Invalid, 772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 637 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-20 06:19:17,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-11-20 06:19:17,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 120. [2021-11-20 06:19:17,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 1.050420168067227) internal successors, (125), 119 states have internal predecessors, (125), 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) [2021-11-20 06:19:17,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 125 transitions. [2021-11-20 06:19:17,682 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 125 transitions. Word has length 107 [2021-11-20 06:19:17,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:19:17,682 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 125 transitions. [2021-11-20 06:19:17,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 5.019230769230769) internal successors, (261), 52 states have internal predecessors, (261), 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) [2021-11-20 06:19:17,683 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 125 transitions. [2021-11-20 06:19:17,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-20 06:19:17,683 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:19:17,684 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:19:17,710 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-20 06:19:17,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-20 06:19:17,899 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:19:17,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:19:17,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1198320184, now seen corresponding path program 14 times [2021-11-20 06:19:17,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:19:17,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317655520] [2021-11-20 06:19:17,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:19:17,899 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:19:17,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:18,359 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 67 proven. 239 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-20 06:19:18,359 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:19:18,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317655520] [2021-11-20 06:19:18,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317655520] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:19:18,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353165206] [2021-11-20 06:19:18,360 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 06:19:18,360 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:19:18,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:19:18,363 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:19:18,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-20 06:19:18,447 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 06:19:18,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:19:18,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-20 06:19:18,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:19:18,647 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-20 06:19:18,681 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 61 [2021-11-20 06:19:18,723 INFO L354 Elim1Store]: treesize reduction 312, result has 11.6 percent of original size [2021-11-20 06:19:18,723 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 111 treesize of output 104 [2021-11-20 06:19:18,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:18,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:18,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:18,753 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 19 [2021-11-20 06:19:18,803 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-11-20 06:19:18,804 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 26 treesize of output 25 [2021-11-20 06:19:18,844 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 71 [2021-11-20 06:19:18,934 INFO L354 Elim1Store]: treesize reduction 495, result has 10.0 percent of original size [2021-11-20 06:19:18,934 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 121 treesize of output 124 [2021-11-20 06:19:18,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:18,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:18,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:18,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:18,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:18,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:18,956 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 27 [2021-11-20 06:19:20,174 INFO L354 Elim1Store]: treesize reduction 14, result has 6.7 percent of original size [2021-11-20 06:19:20,174 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 49 treesize of output 28 [2021-11-20 06:19:20,208 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 66 proven. 212 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2021-11-20 06:19:20,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:19:21,072 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_351| Int)) (or (< (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 4) (* |v_ULTIMATE.start_main_~i~0#1_351| 12)) 0) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 32)) |c_ULTIMATE.start_main_~MINVAL~0#1|) (< |v_ULTIMATE.start_main_~i~0#1_351| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) is different from false [2021-11-20 06:19:21,627 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_351| Int)) (or (< (select (store (let ((.cse2 (* |c_ULTIMATE.start_main_~i~0#1| 12))) (let ((.cse0 (let ((.cse3 (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|)) (.cse4 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse2 (- 8)))) (store .cse3 .cse4 (select .cse3 .cse4)))) (.cse1 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 12) .cse2))) (store .cse0 .cse1 (select .cse0 .cse1)))) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 4) (* |v_ULTIMATE.start_main_~i~0#1_351| 12)) 0) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 32)) |c_ULTIMATE.start_main_~MINVAL~0#1|) (< |v_ULTIMATE.start_main_~i~0#1_351| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) is different from false [2021-11-20 06:19:21,632 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 106 treesize of output 98 [2021-11-20 06:19:21,641 INFO L354 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2021-11-20 06:19:21,642 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 8525 treesize of output 7781 [2021-11-20 06:19:22,529 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 66 proven. 206 refuted. 0 times theorem prover too weak. 58 trivial. 6 not checked. [2021-11-20 06:19:22,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [353165206] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:19:22,530 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:19:22,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 54 [2021-11-20 06:19:22,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29426350] [2021-11-20 06:19:22,530 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:19:22,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2021-11-20 06:19:22,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:19:22,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-11-20 06:19:22,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=292, Invalid=2366, Unknown=2, NotChecked=202, Total=2862 [2021-11-20 06:19:22,532 INFO L87 Difference]: Start difference. First operand 120 states and 125 transitions. Second operand has 54 states, 54 states have (on average 5.037037037037037) internal successors, (272), 54 states have internal predecessors, (272), 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) [2021-11-20 06:19:23,598 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|))) (and (< (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 8 (* |c_ULTIMATE.start_main_~i~0#1| 4))) |c_ULTIMATE.start_main_~MINVAL~0#1|) (= 2 |c_ULTIMATE.start_main_~MINVAL~0#1|) (= (* 12 |c_ULTIMATE.start_main_~i~0#1|) 36) (forall ((|v_ULTIMATE.start_main_~i~0#1_351| Int)) (or (< (select (store (let ((.cse3 (* |c_ULTIMATE.start_main_~i~0#1| 12))) (let ((.cse1 (let ((.cse4 (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|)) (.cse5 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse3 (- 8)))) (store .cse4 .cse5 (select .cse4 .cse5)))) (.cse2 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 12) .cse3))) (store .cse1 .cse2 (select .cse1 .cse2)))) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 4) (* |v_ULTIMATE.start_main_~i~0#1_351| 12)) 0) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 32)) |c_ULTIMATE.start_main_~MINVAL~0#1|) (< |v_ULTIMATE.start_main_~i~0#1_351| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) (= (let ((.cse7 (* |c_ULTIMATE.start_main_~i~0#1| 12))) (select (let ((.cse8 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 12) .cse7))) (store (let ((.cse6 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse7 (- 8)))) (store .cse0 .cse6 (select .cse0 .cse6))) .cse8 (select .cse0 .cse8))) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 4) .cse7))) 0))) is different from false [2021-11-20 06:19:24,060 WARN L838 $PredicateComparison]: unable to prove that (and (= 2 |c_ULTIMATE.start_main_~MINVAL~0#1|) (forall ((|v_ULTIMATE.start_main_~i~0#1_351| Int)) (or (< (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 4) (* |v_ULTIMATE.start_main_~i~0#1_351| 12)) 0) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 32)) |c_ULTIMATE.start_main_~MINVAL~0#1|) (< |v_ULTIMATE.start_main_~i~0#1_351| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) (= (* 12 |c_ULTIMATE.start_main_~i~0#1|) 36) (= (let ((.cse2 (* |c_ULTIMATE.start_main_~i~0#1| 12))) (select (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|)) (.cse3 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 12) .cse2))) (store (let ((.cse1 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse2 (- 8)))) (store .cse0 .cse1 (select .cse0 .cse1))) .cse3 (select .cse0 .cse3))) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 4) .cse2))) 0)) is different from false [2021-11-20 06:19:24,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:19:24,809 INFO L93 Difference]: Finished difference Result 136 states and 142 transitions. [2021-11-20 06:19:24,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-20 06:19:24,809 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 5.037037037037037) internal successors, (272), 54 states have internal predecessors, (272), 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 119 [2021-11-20 06:19:24,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:19:24,810 INFO L225 Difference]: With dead ends: 136 [2021-11-20 06:19:24,810 INFO L226 Difference]: Without dead ends: 126 [2021-11-20 06:19:24,810 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 209 SyntacticMatches, 12 SemanticMatches, 72 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 1742 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=554, Invalid=4288, Unknown=4, NotChecked=556, Total=5402 [2021-11-20 06:19:24,811 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 211 mSDsluCounter, 928 mSDsCounter, 0 mSdLazyCounter, 1268 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 971 SdHoareTripleChecker+Invalid, 1792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 483 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-20 06:19:24,811 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [211 Valid, 971 Invalid, 1792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1268 Invalid, 0 Unknown, 483 Unchecked, 0.5s Time] [2021-11-20 06:19:24,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-11-20 06:19:24,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 120. [2021-11-20 06:19:24,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 1.0420168067226891) internal successors, (124), 119 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:19:24,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 124 transitions. [2021-11-20 06:19:24,821 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 124 transitions. Word has length 119 [2021-11-20 06:19:24,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:19:24,822 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 124 transitions. [2021-11-20 06:19:24,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 5.037037037037037) internal successors, (272), 54 states have internal predecessors, (272), 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) [2021-11-20 06:19:24,822 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 124 transitions. [2021-11-20 06:19:24,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-20 06:19:24,822 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:19:24,823 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:19:24,846 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-20 06:19:25,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:19:25,023 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:19:25,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:19:25,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1591347194, now seen corresponding path program 15 times [2021-11-20 06:19:25,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:19:25,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725877601] [2021-11-20 06:19:25,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:19:25,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:19:25,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:25,885 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 18 proven. 318 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:19:25,886 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:19:25,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725877601] [2021-11-20 06:19:25,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725877601] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:19:25,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777891866] [2021-11-20 06:19:25,886 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 06:19:25,886 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:19:25,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:19:25,887 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:19:25,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-20 06:19:26,361 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-11-20 06:19:26,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:19:26,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 74 conjunts are in the unsatisfiable core [2021-11-20 06:19:26,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:19:26,602 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 20 treesize of output 16 [2021-11-20 06:19:26,639 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 61 [2021-11-20 06:19:26,673 INFO L354 Elim1Store]: treesize reduction 312, result has 11.6 percent of original size [2021-11-20 06:19:26,674 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 111 treesize of output 104 [2021-11-20 06:19:26,716 INFO L354 Elim1Store]: treesize reduction 54, result has 1.8 percent of original size [2021-11-20 06:19:26,716 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 68 treesize of output 40 [2021-11-20 06:19:26,881 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-11-20 06:19:26,881 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 26 treesize of output 25 [2021-11-20 06:19:26,936 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 71 [2021-11-20 06:19:26,998 INFO L354 Elim1Store]: treesize reduction 495, result has 10.0 percent of original size [2021-11-20 06:19:26,999 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 121 treesize of output 124 [2021-11-20 06:19:27,026 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-20 06:19:27,053 INFO L354 Elim1Store]: treesize reduction 99, result has 1.0 percent of original size [2021-11-20 06:19:27,053 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 88 treesize of output 52 [2021-11-20 06:19:27,165 INFO L354 Elim1Store]: treesize reduction 88, result has 20.0 percent of original size [2021-11-20 06:19:27,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 43 [2021-11-20 06:19:27,232 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 81 [2021-11-20 06:19:27,329 INFO L354 Elim1Store]: treesize reduction 744, result has 9.2 percent of original size [2021-11-20 06:19:27,330 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 131 treesize of output 147 [2021-11-20 06:19:27,361 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-20 06:19:27,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:27,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:27,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:27,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:27,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:27,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:27,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:27,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:27,392 INFO L354 Elim1Store]: treesize reduction 33, result has 2.9 percent of original size [2021-11-20 06:19:27,392 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 86 treesize of output 43 [2021-11-20 06:19:27,569 INFO L354 Elim1Store]: treesize reduction 162, result has 17.3 percent of original size [2021-11-20 06:19:27,570 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 58 treesize of output 63 [2021-11-20 06:19:29,707 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 96 [2021-11-20 06:19:29,857 INFO L354 Elim1Store]: treesize reduction 1011, result has 8.6 percent of original size [2021-11-20 06:19:29,857 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 146 treesize of output 175 [2021-11-20 06:19:29,905 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-20 06:19:29,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:29,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:29,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:29,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:29,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:29,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:29,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:29,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:29,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:29,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:29,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:29,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:29,946 INFO L354 Elim1Store]: treesize reduction 51, result has 1.9 percent of original size [2021-11-20 06:19:29,947 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 108 treesize of output 55 [2021-11-20 06:19:38,232 INFO L354 Elim1Store]: treesize reduction 254, result has 15.3 percent of original size [2021-11-20 06:19:38,232 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 85 treesize of output 75 [2021-11-20 06:19:38,357 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 140 treesize of output 117 [2021-11-20 06:19:38,594 INFO L354 Elim1Store]: treesize reduction 1296, result has 8.2 percent of original size [2021-11-20 06:19:38,594 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 35 case distinctions, treesize of input 167 treesize of output 195 [2021-11-20 06:19:38,652 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-20 06:19:38,682 INFO L354 Elim1Store]: treesize reduction 360, result has 0.3 percent of original size [2021-11-20 06:19:38,682 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 186 treesize of output 94 [2021-11-20 06:19:42,649 INFO L354 Elim1Store]: treesize reduction 364, result has 13.7 percent of original size [2021-11-20 06:19:42,650 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 109 treesize of output 102 [2021-11-20 06:19:42,817 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 167 treesize of output 142 [2021-11-20 06:19:43,130 INFO L354 Elim1Store]: treesize reduction 1599, result has 7.8 percent of original size [2021-11-20 06:19:43,130 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 10 new quantified variables, introduced 44 case distinctions, treesize of input 192 treesize of output 233 [2021-11-20 06:19:43,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:43,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:43,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:43,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:43,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:43,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:43,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:43,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:43,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:43,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:43,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:43,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:43,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:43,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:43,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:43,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:43,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:43,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:43,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:43,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:43,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:43,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:43,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:43,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:43,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:43,286 INFO L354 Elim1Store]: treesize reduction 54, result has 1.8 percent of original size [2021-11-20 06:19:43,286 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 25 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 3 case distinctions, treesize of input 172 treesize of output 94 [2021-11-20 06:19:43,683 INFO L354 Elim1Store]: treesize reduction 492, result has 12.5 percent of original size [2021-11-20 06:19:43,684 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 124 treesize of output 120 [2021-11-20 06:19:43,864 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 179 treesize of output 152 [2021-11-20 06:19:44,355 INFO L354 Elim1Store]: treesize reduction 1914, result has 7.8 percent of original size [2021-11-20 06:19:44,356 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 11 new quantified variables, introduced 54 case distinctions, treesize of input 202 treesize of output 262 [2021-11-20 06:19:44,719 INFO L354 Elim1Store]: treesize reduction 602, result has 3.7 percent of original size [2021-11-20 06:19:44,719 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 403 treesize of output 274 [2021-11-20 06:19:45,522 INFO L354 Elim1Store]: treesize reduction 638, result has 11.4 percent of original size [2021-11-20 06:19:45,522 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 141 treesize of output 140 [2021-11-20 06:19:45,711 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 196 treesize of output 167 [2021-11-20 06:19:46,249 INFO L354 Elim1Store]: treesize reduction 2253, result has 7.4 percent of original size [2021-11-20 06:19:46,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 12 new quantified variables, introduced 65 case distinctions, treesize of input 217 treesize of output 290 [2021-11-20 06:19:46,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:46,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:46,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:46,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:46,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:46,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:46,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:46,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:46,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:46,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:46,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:46,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:46,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:46,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:46,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:46,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:46,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:46,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:46,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:46,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:46,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:46,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:46,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:46,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:46,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:46,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:46,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:46,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:46,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:46,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:46,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:46,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:46,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:46,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:46,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:46,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:46,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:46,416 INFO L354 Elim1Store]: treesize reduction 132, result has 7.0 percent of original size [2021-11-20 06:19:46,417 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 37 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 8 case distinctions, treesize of input 168 treesize of output 104 [2021-11-20 06:19:46,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:46,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:46,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:46,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:46,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:46,494 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 06:19:46,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:46,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:46,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:46,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:46,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:46,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:46,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:46,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:46,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:46,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:46,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:46,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:46,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:46,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:46,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:46,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:46,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:46,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:46,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:46,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:46,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:46,520 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-11-20 06:19:46,520 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 26 disjoint index pairs (out of 36 index pairs), introduced 8 new quantified variables, introduced 2 case distinctions, treesize of input 157 treesize of output 87 [2021-11-20 06:19:47,225 INFO L354 Elim1Store]: treesize reduction 802, result has 10.5 percent of original size [2021-11-20 06:19:47,226 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 153 treesize of output 155 [2021-11-20 06:19:47,465 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 208 treesize of output 177 [2021-11-20 06:19:48,206 INFO L354 Elim1Store]: treesize reduction 2610, result has 7.2 percent of original size [2021-11-20 06:19:48,207 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 13 new quantified variables, introduced 77 case distinctions, treesize of input 227 treesize of output 313 [2021-11-20 06:19:48,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:48,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:48,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:48,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:48,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:48,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:48,358 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 06:19:48,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:48,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:48,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:48,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:48,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:48,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:48,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:48,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:48,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:48,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:48,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:48,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:48,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:48,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:48,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:48,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:48,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:48,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:48,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:48,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:48,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:48,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:48,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:48,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:48,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:48,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:48,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:48,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:48,386 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-11-20 06:19:48,386 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 34 disjoint index pairs (out of 45 index pairs), introduced 9 new quantified variables, introduced 2 case distinctions, treesize of input 184 treesize of output 93 [2021-11-20 06:19:48,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:48,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:48,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:48,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:48,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:48,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:48,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:48,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:48,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:48,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:48,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:48,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:48,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:48,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:48,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:48,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:48,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:48,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:48,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:48,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:48,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:48,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:48,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:48,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:48,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:48,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:48,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:48,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:48,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:48,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:48,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:48,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:48,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:48,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:48,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:48,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:48,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:48,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:48,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:48,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:48,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:48,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:48,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:48,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:48,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:48,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:19:48,478 INFO L354 Elim1Store]: treesize reduction 159, result has 0.6 percent of original size [2021-11-20 06:19:48,479 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 11 select indices, 11 select index equivalence classes, 46 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 9 case distinctions, treesize of input 195 treesize of output 100 [2021-11-20 06:19:57,412 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 44 proven. 292 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:19:57,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:21:09,031 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 35 treesize of output 31 [2021-11-20 06:21:09,034 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 59 [2021-11-20 06:21:09,888 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 0 proven. 332 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-20 06:21:09,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1777891866] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:21:09,888 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:21:09,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 44, 27] total 89 [2021-11-20 06:21:09,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562056512] [2021-11-20 06:21:09,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:21:09,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2021-11-20 06:21:09,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:21:09,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2021-11-20 06:21:09,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=629, Invalid=7202, Unknown=1, NotChecked=0, Total=7832 [2021-11-20 06:21:09,891 INFO L87 Difference]: Start difference. First operand 120 states and 124 transitions. Second operand has 89 states, 89 states have (on average 3.898876404494382) internal successors, (347), 89 states have internal predecessors, (347), 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) [2021-11-20 06:21:23,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:21:23,970 INFO L93 Difference]: Finished difference Result 437 states and 460 transitions. [2021-11-20 06:21:23,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2021-11-20 06:21:23,970 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 3.898876404494382) internal successors, (347), 89 states have internal predecessors, (347), 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 119 [2021-11-20 06:21:23,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:21:23,973 INFO L225 Difference]: With dead ends: 437 [2021-11-20 06:21:23,973 INFO L226 Difference]: Without dead ends: 427 [2021-11-20 06:21:23,976 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 169 SyntacticMatches, 49 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12616 ImplicationChecksByTransitivity, 100.5s TimeCoverageRelationStatistics Valid=1935, Invalid=28514, Unknown=1, NotChecked=0, Total=30450 [2021-11-20 06:21:23,976 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 499 mSDsluCounter, 1726 mSDsCounter, 0 mSdLazyCounter, 2264 mSolverCounterSat, 299 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 499 SdHoareTripleChecker+Valid, 1785 SdHoareTripleChecker+Invalid, 3372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 299 IncrementalHoareTripleChecker+Valid, 2264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 809 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-20 06:21:23,977 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [499 Valid, 1785 Invalid, 3372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [299 Valid, 2264 Invalid, 0 Unknown, 809 Unchecked, 1.3s Time] [2021-11-20 06:21:23,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2021-11-20 06:21:24,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 310. [2021-11-20 06:21:24,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 309 states have (on average 1.0420711974110033) internal successors, (322), 309 states have internal predecessors, (322), 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) [2021-11-20 06:21:24,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 322 transitions. [2021-11-20 06:21:24,012 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 322 transitions. Word has length 119 [2021-11-20 06:21:24,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:21:24,013 INFO L470 AbstractCegarLoop]: Abstraction has 310 states and 322 transitions. [2021-11-20 06:21:24,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 3.898876404494382) internal successors, (347), 89 states have internal predecessors, (347), 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) [2021-11-20 06:21:24,013 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 322 transitions. [2021-11-20 06:21:24,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-20 06:21:24,022 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:21:24,022 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:21:24,050 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-20 06:21:24,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:21:24,239 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:21:24,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:21:24,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1692542951, now seen corresponding path program 16 times [2021-11-20 06:21:24,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:21:24,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292481653] [2021-11-20 06:21:24,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:21:24,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:21:24,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:25,534 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 24 proven. 370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:21:25,534 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:21:25,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292481653] [2021-11-20 06:21:25,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292481653] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:21:25,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64758743] [2021-11-20 06:21:25,535 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-20 06:21:25,535 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:21:25,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:21:25,536 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:21:25,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-20 06:21:25,608 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-20 06:21:25,608 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:21:25,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 52 conjunts are in the unsatisfiable core [2021-11-20 06:21:25,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:21:25,957 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 20 treesize of output 16 [2021-11-20 06:21:25,996 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 40 [2021-11-20 06:21:26,027 INFO L354 Elim1Store]: treesize reduction 192, result has 13.1 percent of original size [2021-11-20 06:21:26,027 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 72 treesize of output 74 [2021-11-20 06:21:26,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:21:26,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:21:26,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:21:26,042 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 18 [2021-11-20 06:21:26,142 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-11-20 06:21:26,142 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 26 treesize of output 25 [2021-11-20 06:21:26,191 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 68 [2021-11-20 06:21:26,252 INFO L354 Elim1Store]: treesize reduction 495, result has 10.0 percent of original size [2021-11-20 06:21:26,252 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 118 treesize of output 121 [2021-11-20 06:21:26,271 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-20 06:21:26,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:21:26,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:21:26,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:21:26,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:21:26,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:21:26,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:21:26,290 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 28 [2021-11-20 06:21:26,370 INFO L354 Elim1Store]: treesize reduction 88, result has 20.0 percent of original size [2021-11-20 06:21:26,370 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 40 [2021-11-20 06:21:26,430 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 78 [2021-11-20 06:21:26,521 INFO L354 Elim1Store]: treesize reduction 744, result has 9.2 percent of original size [2021-11-20 06:21:26,522 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 128 treesize of output 144 [2021-11-20 06:21:26,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:21:26,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:21:26,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:21:26,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:21:26,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:21:26,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:21:26,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:21:26,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:21:26,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:21:26,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:21:26,562 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 34 [2021-11-20 06:21:26,674 INFO L354 Elim1Store]: treesize reduction 132, result has 17.5 percent of original size [2021-11-20 06:21:26,674 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 44 treesize of output 49 [2021-11-20 06:21:26,739 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 99 treesize of output 82 [2021-11-20 06:21:26,882 INFO L354 Elim1Store]: treesize reduction 897, result has 8.5 percent of original size [2021-11-20 06:21:26,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 132 treesize of output 155 [2021-11-20 06:21:26,893 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-20 06:21:26,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:21:26,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:21:26,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:21:26,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:21:26,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:21:26,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:21:26,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:21:26,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:21:26,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:21:26,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:21:26,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:21:26,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:21:26,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:21:26,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:21:26,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:21:26,933 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 37 [2021-11-20 06:21:27,056 INFO L354 Elim1Store]: treesize reduction 200, result has 15.6 percent of original size [2021-11-20 06:21:27,058 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 53 treesize of output 61 [2021-11-20 06:21:27,129 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 111 treesize of output 92 [2021-11-20 06:21:27,344 INFO L354 Elim1Store]: treesize reduction 1116, result has 8.0 percent of original size [2021-11-20 06:21:27,345 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 35 case distinctions, treesize of input 142 treesize of output 175 [2021-11-20 06:21:27,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:21:27,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:21:27,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:21:27,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:21:27,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:21:27,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:21:27,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:21:27,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:21:27,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:21:27,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:21:27,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:21:27,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:21:27,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:21:27,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:21:27,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:21:27,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:21:27,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:21:27,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:21:27,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:21:27,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:21:27,419 INFO L354 Elim1Store]: treesize reduction 14, result has 6.7 percent of original size [2021-11-20 06:21:27,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 20 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 61 [2021-11-20 06:21:37,988 INFO L354 Elim1Store]: treesize reduction 132, result has 0.8 percent of original size [2021-11-20 06:21:37,988 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 76 treesize of output 37 [2021-11-20 06:21:38,004 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 20 proven. 346 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-20 06:21:38,004 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:21:39,056 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 15 [2021-11-20 06:21:39,058 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2021-11-20 06:21:39,388 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 20 proven. 318 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-11-20 06:21:39,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [64758743] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:21:39,389 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:21:39,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 30, 20] total 76 [2021-11-20 06:21:39,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846446247] [2021-11-20 06:21:39,389 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:21:39,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2021-11-20 06:21:39,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:21:39,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2021-11-20 06:21:39,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=355, Invalid=5342, Unknown=3, NotChecked=0, Total=5700 [2021-11-20 06:21:39,391 INFO L87 Difference]: Start difference. First operand 310 states and 322 transitions. Second operand has 76 states, 76 states have (on average 4.302631578947368) internal successors, (327), 76 states have internal predecessors, (327), 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) [2021-11-20 06:22:13,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:22:13,145 INFO L93 Difference]: Finished difference Result 573 states and 607 transitions. [2021-11-20 06:22:13,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2021-11-20 06:22:13,146 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 4.302631578947368) internal successors, (327), 76 states have internal predecessors, (327), 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 125 [2021-11-20 06:22:13,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:22:13,148 INFO L225 Difference]: With dead ends: 573 [2021-11-20 06:22:13,148 INFO L226 Difference]: Without dead ends: 557 [2021-11-20 06:22:13,150 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 208 SyntacticMatches, 23 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10158 ImplicationChecksByTransitivity, 42.8s TimeCoverageRelationStatistics Valid=2420, Invalid=28012, Unknown=18, NotChecked=0, Total=30450 [2021-11-20 06:22:13,150 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 551 mSDsluCounter, 1503 mSDsCounter, 0 mSdLazyCounter, 3751 mSolverCounterSat, 724 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 551 SdHoareTripleChecker+Valid, 1559 SdHoareTripleChecker+Invalid, 5034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 724 IncrementalHoareTripleChecker+Valid, 3751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 559 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:22:13,151 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [551 Valid, 1559 Invalid, 5034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [724 Valid, 3751 Invalid, 0 Unknown, 559 Unchecked, 2.1s Time] [2021-11-20 06:22:13,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2021-11-20 06:22:13,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 320. [2021-11-20 06:22:13,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 319 states have (on average 1.0376175548589341) internal successors, (331), 319 states have internal predecessors, (331), 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) [2021-11-20 06:22:13,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 331 transitions. [2021-11-20 06:22:13,202 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 331 transitions. Word has length 125 [2021-11-20 06:22:13,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:22:13,203 INFO L470 AbstractCegarLoop]: Abstraction has 320 states and 331 transitions. [2021-11-20 06:22:13,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 4.302631578947368) internal successors, (327), 76 states have internal predecessors, (327), 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) [2021-11-20 06:22:13,203 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 331 transitions. [2021-11-20 06:22:13,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-20 06:22:13,204 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:22:13,204 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:22:13,233 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-20 06:22:13,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-11-20 06:22:13,417 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:22:13,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:22:13,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1993944587, now seen corresponding path program 17 times [2021-11-20 06:22:13,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:22:13,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056725191] [2021-11-20 06:22:13,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:22:13,418 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:22:13,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:13,787 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 15 proven. 58 refuted. 0 times theorem prover too weak. 355 trivial. 0 not checked. [2021-11-20 06:22:13,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:22:13,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056725191] [2021-11-20 06:22:13,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056725191] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:22:13,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539433516] [2021-11-20 06:22:13,788 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-20 06:22:13,788 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:22:13,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:22:13,790 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:22:13,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-20 06:22:14,653 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2021-11-20 06:22:14,653 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:22:14,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-20 06:22:14,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:22:15,101 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 45 proven. 28 refuted. 0 times theorem prover too weak. 355 trivial. 0 not checked. [2021-11-20 06:22:15,101 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:22:15,775 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 45 proven. 28 refuted. 0 times theorem prover too weak. 355 trivial. 0 not checked. [2021-11-20 06:22:15,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [539433516] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:22:15,776 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:22:15,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 13] total 31 [2021-11-20 06:22:15,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336132190] [2021-11-20 06:22:15,776 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:22:15,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-20 06:22:15,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:22:15,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-20 06:22:15,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=777, Unknown=0, NotChecked=0, Total=930 [2021-11-20 06:22:15,778 INFO L87 Difference]: Start difference. First operand 320 states and 331 transitions. Second operand has 31 states, 31 states have (on average 4.0) internal successors, (124), 31 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:22:17,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:22:17,373 INFO L93 Difference]: Finished difference Result 511 states and 530 transitions. [2021-11-20 06:22:17,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-11-20 06:22:17,373 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.0) internal successors, (124), 31 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2021-11-20 06:22:17,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:22:17,375 INFO L225 Difference]: With dead ends: 511 [2021-11-20 06:22:17,375 INFO L226 Difference]: Without dead ends: 268 [2021-11-20 06:22:17,376 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1114 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=634, Invalid=3656, Unknown=0, NotChecked=0, Total=4290 [2021-11-20 06:22:17,377 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 724 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 1255 mSolverCounterSat, 223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 724 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 1478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 223 IncrementalHoareTripleChecker+Valid, 1255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 06:22:17,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [724 Valid, 214 Invalid, 1478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [223 Valid, 1255 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-20 06:22:17,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2021-11-20 06:22:17,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 249. [2021-11-20 06:22:17,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 248 states have (on average 1.032258064516129) internal successors, (256), 248 states have internal predecessors, (256), 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) [2021-11-20 06:22:17,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 256 transitions. [2021-11-20 06:22:17,432 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 256 transitions. Word has length 133 [2021-11-20 06:22:17,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:22:17,432 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 256 transitions. [2021-11-20 06:22:17,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.0) internal successors, (124), 31 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:22:17,433 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 256 transitions. [2021-11-20 06:22:17,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-20 06:22:17,434 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:22:17,434 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:22:17,448 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-20 06:22:17,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-11-20 06:22:17,648 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:22:17,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:22:17,649 INFO L85 PathProgramCache]: Analyzing trace with hash 2040887679, now seen corresponding path program 18 times [2021-11-20 06:22:17,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:22:17,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424657328] [2021-11-20 06:22:17,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:22:17,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:22:17,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:18,344 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 377 proven. 95 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-11-20 06:22:18,344 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:22:18,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424657328] [2021-11-20 06:22:18,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424657328] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:22:18,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821035821] [2021-11-20 06:22:18,344 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-20 06:22:18,344 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:22:18,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:22:18,345 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:22:18,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-20 06:22:19,232 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-11-20 06:22:19,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:22:19,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-20 06:22:19,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:22:20,865 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 444 proven. 28 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-11-20 06:22:20,865 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:22:21,584 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 444 proven. 28 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-11-20 06:22:21,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1821035821] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:22:21,584 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:22:21,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 22] total 64 [2021-11-20 06:22:21,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842796597] [2021-11-20 06:22:21,584 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:22:21,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2021-11-20 06:22:21,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:22:21,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-11-20 06:22:21,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=954, Invalid=3078, Unknown=0, NotChecked=0, Total=4032 [2021-11-20 06:22:21,587 INFO L87 Difference]: Start difference. First operand 249 states and 256 transitions. Second operand has 64 states, 64 states have (on average 5.109375) internal successors, (327), 64 states have internal predecessors, (327), 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) [2021-11-20 06:22:22,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:22:22,252 INFO L93 Difference]: Finished difference Result 273 states and 281 transitions. [2021-11-20 06:22:22,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-20 06:22:22,253 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 5.109375) internal successors, (327), 64 states have internal predecessors, (327), 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 137 [2021-11-20 06:22:22,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:22:22,254 INFO L225 Difference]: With dead ends: 273 [2021-11-20 06:22:22,254 INFO L226 Difference]: Without dead ends: 153 [2021-11-20 06:22:22,255 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2064 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1231, Invalid=4025, Unknown=0, NotChecked=0, Total=5256 [2021-11-20 06:22:22,256 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 606 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 709 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 606 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 06:22:22,256 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [606 Valid, 374 Invalid, 900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 709 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-20 06:22:22,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-11-20 06:22:22,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 144. [2021-11-20 06:22:22,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 1.0419580419580419) internal successors, (149), 143 states have internal predecessors, (149), 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) [2021-11-20 06:22:22,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 149 transitions. [2021-11-20 06:22:22,275 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 149 transitions. Word has length 137 [2021-11-20 06:22:22,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:22:22,275 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 149 transitions. [2021-11-20 06:22:22,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 5.109375) internal successors, (327), 64 states have internal predecessors, (327), 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) [2021-11-20 06:22:22,276 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 149 transitions. [2021-11-20 06:22:22,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-20 06:22:22,277 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:22:22,277 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:22:22,299 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2021-11-20 06:22:22,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:22:22,486 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:22:22,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:22:22,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1140959994, now seen corresponding path program 19 times [2021-11-20 06:22:22,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:22:22,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147992396] [2021-11-20 06:22:22,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:22:22,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:22:22,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:24,889 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 86 proven. 357 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 06:22:24,889 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:22:24,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147992396] [2021-11-20 06:22:24,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147992396] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:22:24,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952337765] [2021-11-20 06:22:24,890 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-20 06:22:24,890 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:22:24,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:22:24,890 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:22:24,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-20 06:22:24,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:24,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 58 conjunts are in the unsatisfiable core [2021-11-20 06:22:24,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:22:25,319 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-20 06:22:25,372 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 61 [2021-11-20 06:22:25,406 INFO L354 Elim1Store]: treesize reduction 312, result has 11.6 percent of original size [2021-11-20 06:22:25,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 111 treesize of output 104 [2021-11-20 06:22:25,416 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-20 06:22:25,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:25,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:25,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:25,443 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 28 [2021-11-20 06:22:25,517 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-11-20 06:22:25,517 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 32 treesize of output 25 [2021-11-20 06:22:25,569 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 75 [2021-11-20 06:22:25,629 INFO L354 Elim1Store]: treesize reduction 495, result has 10.0 percent of original size [2021-11-20 06:22:25,629 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 125 treesize of output 124 [2021-11-20 06:22:25,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:25,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:25,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:25,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:25,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:25,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:25,652 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 28 [2021-11-20 06:22:26,049 INFO L354 Elim1Store]: treesize reduction 88, result has 20.0 percent of original size [2021-11-20 06:22:26,049 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 43 [2021-11-20 06:22:26,125 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 85 [2021-11-20 06:22:26,221 INFO L354 Elim1Store]: treesize reduction 744, result has 9.2 percent of original size [2021-11-20 06:22:26,221 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 135 treesize of output 147 [2021-11-20 06:22:26,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:26,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:26,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:26,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:26,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:26,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:26,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:26,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:26,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:26,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:26,249 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 51 [2021-11-20 06:22:27,030 INFO L354 Elim1Store]: treesize reduction 162, result has 17.3 percent of original size [2021-11-20 06:22:27,031 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 59 treesize of output 58 [2021-11-20 06:22:27,115 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 98 [2021-11-20 06:22:27,252 INFO L354 Elim1Store]: treesize reduction 1011, result has 8.6 percent of original size [2021-11-20 06:22:27,253 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 148 treesize of output 170 [2021-11-20 06:22:27,276 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-20 06:22:27,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:27,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:27,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:27,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:27,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:27,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:27,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:27,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:27,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:27,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:27,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:27,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:27,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:27,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:27,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:27,318 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 61 [2021-11-20 06:22:27,496 INFO L354 Elim1Store]: treesize reduction 254, result has 15.3 percent of original size [2021-11-20 06:22:27,496 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 74 treesize of output 73 [2021-11-20 06:22:27,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 108 [2021-11-20 06:22:27,784 INFO L354 Elim1Store]: treesize reduction 1296, result has 8.2 percent of original size [2021-11-20 06:22:27,784 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 35 case distinctions, treesize of input 158 treesize of output 193 [2021-11-20 06:22:27,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:27,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:27,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:27,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:27,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:27,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:27,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:27,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:27,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:27,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:27,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:27,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:27,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:27,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:27,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:27,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:27,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:27,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:27,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:27,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:27,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:27,863 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 146 treesize of output 79 [2021-11-20 06:22:28,048 INFO L354 Elim1Store]: treesize reduction 301, result has 14.0 percent of original size [2021-11-20 06:22:28,048 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 77 treesize of output 79 [2021-11-20 06:22:28,156 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 132 treesize of output 109 [2021-11-20 06:22:28,441 INFO L354 Elim1Store]: treesize reduction 1410, result has 7.7 percent of original size [2021-11-20 06:22:28,442 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 10 new quantified variables, introduced 44 case distinctions, treesize of input 159 treesize of output 198 [2021-11-20 06:22:28,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:28,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:28,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:28,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:28,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:28,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:28,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:28,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:28,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:28,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:28,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:28,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:28,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:28,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:28,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:28,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:28,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:28,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:28,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:28,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:28,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:28,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:28,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:28,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:28,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:28,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:28,491 INFO L354 Elim1Store]: treesize reduction 33, result has 2.9 percent of original size [2021-11-20 06:22:28,491 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 26 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 2 case distinctions, treesize of input 118 treesize of output 60 [2021-11-20 06:22:28,760 INFO L354 Elim1Store]: treesize reduction 420, result has 12.7 percent of original size [2021-11-20 06:22:28,761 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 97 treesize of output 102 [2021-11-20 06:22:28,906 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 149 treesize of output 124 [2021-11-20 06:22:29,281 INFO L354 Elim1Store]: treesize reduction 1722, result has 7.4 percent of original size [2021-11-20 06:22:29,281 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 11 new quantified variables, introduced 54 case distinctions, treesize of input 174 treesize of output 229 [2021-11-20 06:22:29,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:29,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:29,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:29,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:29,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:29,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:29,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:29,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:29,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:29,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:29,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:29,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:29,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:29,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:29,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:29,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:29,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:29,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:29,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:29,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:29,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:29,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:29,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:29,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:29,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:29,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:29,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:29,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:29,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:29,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:29,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:29,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:29,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:29,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:29,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:29,398 INFO L354 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2021-11-20 06:22:29,399 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 35 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 1 case distinctions, treesize of input 119 treesize of output 61 [2021-11-20 06:22:37,485 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 3 proven. 87 refuted. 0 times theorem prover too weak. 355 trivial. 0 not checked. [2021-11-20 06:22:37,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:23:36,133 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 31 treesize of output 29 [2021-11-20 06:23:36,135 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 89 [2021-11-20 06:23:36,511 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 20 proven. 335 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-11-20 06:23:36,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952337765] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:23:36,511 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:23:36,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 22, 22] total 75 [2021-11-20 06:23:36,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623307861] [2021-11-20 06:23:36,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:23:36,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2021-11-20 06:23:36,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:23:36,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2021-11-20 06:23:36,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=5184, Unknown=45, NotChecked=0, Total=5550 [2021-11-20 06:23:36,513 INFO L87 Difference]: Start difference. First operand 144 states and 149 transitions. Second operand has 75 states, 75 states have (on average 3.8666666666666667) internal successors, (290), 75 states have internal predecessors, (290), 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) [2021-11-20 06:23:43,380 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (div c_~CELLCOUNT~0 3)) (.cse0 (<= 7 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 12) (- 8)) |c_ULTIMATE.start_main_~CCCELVOL2~0#1|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 36)))) (.cse1 (= 2 |c_ULTIMATE.start_main_~MINVAL~0#1|))) (and .cse0 (forall ((|v_ULTIMATE.start_main_~i~0#1_558| Int)) (or (<= |c_ULTIMATE.start_main_~MINVAL~0#1| (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 8) (* |v_ULTIMATE.start_main_~i~0#1_558| 12)) |c_ULTIMATE.start_main_~CCCELVOL2~0#1|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 40))) (< |v_ULTIMATE.start_main_~i~0#1_558| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) .cse1 (<= |c_ULTIMATE.start_main_~MINVAL~0#1| |c_ULTIMATE.start_main_~CCCELVOL2~0#1|) (<= .cse2 (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (or (and (<= .cse2 |c_ULTIMATE.start_main_~i~0#1|) (or (<= 0 c_~CELLCOUNT~0) (= (* 3 .cse2) c_~CELLCOUNT~0))) (< .cse2 |c_ULTIMATE.start_main_~i~0#1|) (and .cse0 .cse1 (<= 4 |c_ULTIMATE.start_main_~i~0#1|))) (not (= (* 12 |c_ULTIMATE.start_main_~i~0#1|) 48)))) is different from false [2021-11-20 06:24:23,754 WARN L838 $PredicateComparison]: unable to prove that (and (<= |c_ULTIMATE.start_main_~MINVAL~0#1| (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 12) (- 8)) |c_ULTIMATE.start_main_~CCCELVOL2~0#1|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 40))) (forall ((|v_ULTIMATE.start_main_~i~0#1_558| Int)) (or (<= |c_ULTIMATE.start_main_~MINVAL~0#1| (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 8) (* |v_ULTIMATE.start_main_~i~0#1_558| 12)) |c_ULTIMATE.start_main_~CCCELVOL2~0#1|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 40))) (< |v_ULTIMATE.start_main_~i~0#1_558| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) (<= |c_ULTIMATE.start_main_~MINVAL~0#1| |c_ULTIMATE.start_main_~CCCELVOL2~0#1|)) is different from false [2021-11-20 06:24:50,396 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|))) (and (forall ((|v_ULTIMATE.start_main_~i~0#1_558| Int)) (or (<= |c_ULTIMATE.start_main_~MINVAL~0#1| (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 8) (* |v_ULTIMATE.start_main_~i~0#1_558| 12)) |c_ULTIMATE.start_main_~CCCELVOL2~0#1|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 40))) (< |v_ULTIMATE.start_main_~i~0#1_558| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) (= (* 12 |c_ULTIMATE.start_main_~i~0#1|) 48) (= 2 |c_ULTIMATE.start_main_~MINVAL~0#1|) (<= |c_ULTIMATE.start_main_~MINVAL~0#1| (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4) 24))) (<= 7 (let ((.cse1 (* |c_ULTIMATE.start_main_~i~0#1| 12))) (select (store .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 4) .cse1) 0) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 12) .cse1)))))) is different from false [2021-11-20 06:25:00,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:25:00,362 INFO L93 Difference]: Finished difference Result 417 states and 439 transitions. [2021-11-20 06:25:00,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2021-11-20 06:25:00,362 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 3.8666666666666667) internal successors, (290), 75 states have internal predecessors, (290), 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 137 [2021-11-20 06:25:00,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:25:00,364 INFO L225 Difference]: With dead ends: 417 [2021-11-20 06:25:00,364 INFO L226 Difference]: Without dead ends: 322 [2021-11-20 06:25:00,367 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 463 GetRequests, 241 SyntacticMatches, 38 SemanticMatches, 184 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 12026 ImplicationChecksByTransitivity, 151.3s TimeCoverageRelationStatistics Valid=1959, Invalid=31274, Unknown=85, NotChecked=1092, Total=34410 [2021-11-20 06:25:00,367 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 437 mSDsluCounter, 1511 mSDsCounter, 0 mSdLazyCounter, 3050 mSolverCounterSat, 609 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 1571 SdHoareTripleChecker+Invalid, 4169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 609 IncrementalHoareTripleChecker+Valid, 3050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 510 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-20 06:25:00,368 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [437 Valid, 1571 Invalid, 4169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [609 Valid, 3050 Invalid, 0 Unknown, 510 Unchecked, 1.9s Time] [2021-11-20 06:25:00,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2021-11-20 06:25:00,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 257. [2021-11-20 06:25:00,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 256 states have (on average 1.03515625) internal successors, (265), 256 states have internal predecessors, (265), 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) [2021-11-20 06:25:00,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 265 transitions. [2021-11-20 06:25:00,404 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 265 transitions. Word has length 137 [2021-11-20 06:25:00,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:25:00,405 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 265 transitions. [2021-11-20 06:25:00,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 3.8666666666666667) internal successors, (290), 75 states have internal predecessors, (290), 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) [2021-11-20 06:25:00,405 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 265 transitions. [2021-11-20 06:25:00,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-11-20 06:25:00,406 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:25:00,407 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 8, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:25:00,434 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-20 06:25:00,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-11-20 06:25:00,619 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:25:00,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:25:00,619 INFO L85 PathProgramCache]: Analyzing trace with hash -570318186, now seen corresponding path program 20 times [2021-11-20 06:25:00,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:25:00,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150513775] [2021-11-20 06:25:00,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:25:00,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:25:00,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:25:01,139 INFO L134 CoverageAnalysis]: Checked inductivity of 530 backedges. 49 proven. 62 refuted. 0 times theorem prover too weak. 419 trivial. 0 not checked. [2021-11-20 06:25:01,139 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:25:01,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150513775] [2021-11-20 06:25:01,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150513775] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:25:01,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400621842] [2021-11-20 06:25:01,139 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 06:25:01,139 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:25:01,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:25:01,141 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:25:01,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-20 06:25:01,223 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 06:25:01,223 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:25:01,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-20 06:25:01,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:25:01,775 INFO L134 CoverageAnalysis]: Checked inductivity of 530 backedges. 45 proven. 66 refuted. 0 times theorem prover too weak. 419 trivial. 0 not checked. [2021-11-20 06:25:01,775 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:25:02,583 INFO L134 CoverageAnalysis]: Checked inductivity of 530 backedges. 45 proven. 66 refuted. 0 times theorem prover too weak. 419 trivial. 0 not checked. [2021-11-20 06:25:02,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [400621842] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:25:02,584 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:25:02,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15, 15] total 36 [2021-11-20 06:25:02,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584607691] [2021-11-20 06:25:02,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:25:02,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-11-20 06:25:02,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:25:02,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-11-20 06:25:02,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=1051, Unknown=0, NotChecked=0, Total=1260 [2021-11-20 06:25:02,586 INFO L87 Difference]: Start difference. First operand 257 states and 265 transitions. Second operand has 36 states, 36 states have (on average 4.111111111111111) internal successors, (148), 36 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:25:03,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:25:03,939 INFO L93 Difference]: Finished difference Result 347 states and 359 transitions. [2021-11-20 06:25:03,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-11-20 06:25:03,940 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.111111111111111) internal successors, (148), 36 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 147 [2021-11-20 06:25:03,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:25:03,940 INFO L225 Difference]: With dead ends: 347 [2021-11-20 06:25:03,941 INFO L226 Difference]: Without dead ends: 165 [2021-11-20 06:25:03,941 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1302 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=652, Invalid=3638, Unknown=0, NotChecked=0, Total=4290 [2021-11-20 06:25:03,942 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 706 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 1317 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 706 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 1534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 1317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 06:25:03,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [706 Valid, 118 Invalid, 1534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 1317 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-20 06:25:03,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-11-20 06:25:03,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 156. [2021-11-20 06:25:03,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 155 states have (on average 1.038709677419355) internal successors, (161), 155 states have internal predecessors, (161), 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) [2021-11-20 06:25:03,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 161 transitions. [2021-11-20 06:25:03,964 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 161 transitions. Word has length 147 [2021-11-20 06:25:03,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:25:03,965 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 161 transitions. [2021-11-20 06:25:03,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 4.111111111111111) internal successors, (148), 36 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:25:03,965 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 161 transitions. [2021-11-20 06:25:03,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-11-20 06:25:03,966 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:25:03,966 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:25:04,004 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-11-20 06:25:04,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-11-20 06:25:04,182 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:25:04,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:25:04,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1764015030, now seen corresponding path program 21 times [2021-11-20 06:25:04,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:25:04,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63568832] [2021-11-20 06:25:04,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:25:04,183 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:25:04,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:25:04,753 INFO L134 CoverageAnalysis]: Checked inductivity of 572 backedges. 1 proven. 499 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-11-20 06:25:04,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:25:04,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63568832] [2021-11-20 06:25:04,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63568832] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:25:04,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376543185] [2021-11-20 06:25:04,754 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 06:25:04,754 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:25:04,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:25:04,755 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:25:04,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380a4eca-0072-401a-afd5-d2a58d0eedbf/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-11-20 06:25:06,390 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2021-11-20 06:25:06,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:25:06,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 44 conjunts are in the unsatisfiable core [2021-11-20 06:25:06,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:25:06,562 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-20 06:25:06,577 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 58 [2021-11-20 06:25:06,614 INFO L354 Elim1Store]: treesize reduction 192, result has 13.1 percent of original size [2021-11-20 06:25:06,614 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 147 treesize of output 137 [2021-11-20 06:25:06,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:25:06,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:25:06,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:25:06,650 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 22 [2021-11-20 06:25:06,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 51 [2021-11-20 06:25:06,710 INFO L354 Elim1Store]: treesize reduction 162, result has 17.3 percent of original size [2021-11-20 06:25:06,710 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 256 treesize of output 238 [2021-11-20 06:25:06,765 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 68 [2021-11-20 06:25:06,832 INFO L354 Elim1Store]: treesize reduction 495, result has 10.0 percent of original size [2021-11-20 06:25:06,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 118 treesize of output 121 [2021-11-20 06:25:06,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:25:06,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:25:06,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:25:06,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:25:06,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:25:06,858 INFO L354 Elim1Store]: treesize reduction 14, result has 6.7 percent of original size [2021-11-20 06:25:06,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 31 [2021-11-20 06:25:08,727 INFO L354 Elim1Store]: treesize reduction 88, result has 20.0 percent of original size [2021-11-20 06:25:08,727 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 40 [2021-11-20 06:25:09,532 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 78 [2021-11-20 06:25:09,635 INFO L354 Elim1Store]: treesize reduction 744, result has 9.2 percent of original size [2021-11-20 06:25:09,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 128 treesize of output 144 [2021-11-20 06:25:09,685 INFO L354 Elim1Store]: treesize reduction 168, result has 0.6 percent of original size [2021-11-20 06:25:09,685 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 90 treesize of output 51 [2021-11-20 06:25:11,400 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 57 treesize of output 47 [2021-11-20 06:25:11,403 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-11-20 06:25:11,404 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 204 treesize of output 164 [2021-11-20 06:25:11,483 INFO L134 CoverageAnalysis]: Checked inductivity of 572 backedges. 4 proven. 432 refuted. 2 times theorem prover too weak. 134 trivial. 0 not checked. [2021-11-20 06:25:11,483 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:25:12,308 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~i~0#1| Int)) (= (select (let ((.cse2 (* |ULTIMATE.start_main_~i~0#1| 12))) (let ((.cse0 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 4) .cse2) 0)) (.cse3 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 12) .cse2))) (store (let ((.cse1 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse2 (- 8)))) (store .cse0 .cse1 (select .cse0 .cse1))) .cse3 (select .cse0 .cse3)))) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 44)) 0)) is different from false [2021-11-20 06:25:12,904 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_642| Int)) (= (select (let ((.cse2 (* |v_ULTIMATE.start_main_~i~0#1_642| 12))) (let ((.cse0 (store (let ((.cse6 (* |c_ULTIMATE.start_main_~i~0#1| 12))) (let ((.cse4 (let ((.cse7 (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|)) (.cse8 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse6 (- 8)))) (store .cse7 .cse8 (select .cse7 .cse8)))) (.cse5 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 12) .cse6))) (store .cse4 .cse5 (select .cse4 .cse5)))) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 4) .cse2) 0)) (.cse3 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 12) .cse2))) (store (let ((.cse1 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse2 (- 8)))) (store .cse0 .cse1 (select .cse0 .cse1))) .cse3 (select .cse0 .cse3)))) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 44)) 0)) is different from false [2021-11-20 06:25:13,541 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_642| Int) (|ULTIMATE.start_main_~i~0#1| Int)) (= (select (let ((.cse2 (* |v_ULTIMATE.start_main_~i~0#1_642| 12))) (let ((.cse0 (store (let ((.cse6 (* |ULTIMATE.start_main_~i~0#1| 12))) (let ((.cse4 (let ((.cse7 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 4) .cse6) 0)) (.cse8 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse6 (- 8)))) (store .cse7 .cse8 (select .cse7 .cse8)))) (.cse5 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 12) .cse6))) (store .cse4 .cse5 (select .cse4 .cse5)))) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 4) .cse2) 0)) (.cse3 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 12) .cse2))) (store (let ((.cse1 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse2 (- 8)))) (store .cse0 .cse1 (select .cse0 .cse1))) .cse3 (select .cse0 .cse3)))) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 44)) 0)) is different from false [2021-11-20 06:25:14,160 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_642| Int) (|v_ULTIMATE.start_main_~i~0#1_644| Int)) (= 0 (select (let ((.cse2 (* |v_ULTIMATE.start_main_~i~0#1_642| 12))) (let ((.cse0 (store (let ((.cse6 (* |v_ULTIMATE.start_main_~i~0#1_644| 12))) (let ((.cse4 (let ((.cse7 (store (let ((.cse11 (* |c_ULTIMATE.start_main_~i~0#1| 12))) (let ((.cse9 (let ((.cse12 (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|)) (.cse13 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse11 (- 8)))) (store .cse12 .cse13 (select .cse12 .cse13)))) (.cse10 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 12) .cse11))) (store .cse9 .cse10 (select .cse9 .cse10)))) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 4) .cse6) 0)) (.cse8 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse6 (- 8)))) (store .cse7 .cse8 (select .cse7 .cse8)))) (.cse5 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 12) .cse6))) (store .cse4 .cse5 (select .cse4 .cse5)))) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 4) .cse2) 0)) (.cse3 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 12) .cse2))) (store (let ((.cse1 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse2 (- 8)))) (store .cse0 .cse1 (select .cse0 .cse1))) .cse3 (select .cse0 .cse3)))) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 44)))) is different from false [2021-11-20 06:25:14,165 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 1312 treesize of output 1216 [2021-11-20 06:25:15,098 INFO L354 Elim1Store]: treesize reduction 288, result has 20.2 percent of original size [2021-11-20 06:25:15,107 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 720431913294525672 treesize of output 659341444199331120