./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-lit/mcmillan2006.i --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_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/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_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-lit/mcmillan2006.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/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_55c881ec-a2aa-46f4-8eff-99fd20702668/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 45cd9f1eda35cecb580d3b7fe5199506be9e5041f2297c1c3e22e0a862fa68be --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 06:06:56,282 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 06:06:56,286 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 06:06:56,331 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 06:06:56,332 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 06:06:56,333 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 06:06:56,335 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 06:06:56,338 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 06:06:56,341 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 06:06:56,342 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 06:06:56,344 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 06:06:56,346 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 06:06:56,346 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 06:06:56,348 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 06:06:56,363 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 06:06:56,365 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 06:06:56,369 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 06:06:56,371 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 06:06:56,374 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 06:06:56,379 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 06:06:56,385 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 06:06:56,392 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 06:06:56,396 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 06:06:56,397 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 06:06:56,404 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 06:06:56,405 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 06:06:56,405 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 06:06:56,414 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 06:06:56,414 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 06:06:56,416 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 06:06:56,417 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 06:06:56,418 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 06:06:56,420 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 06:06:56,422 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 06:06:56,424 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 06:06:56,424 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 06:06:56,425 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 06:06:56,425 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 06:06:56,426 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 06:06:56,427 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 06:06:56,428 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 06:06:56,429 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-20 06:06:56,481 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 06:06:56,481 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 06:06:56,482 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 06:06:56,482 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 06:06:56,483 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 06:06:56,484 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 06:06:56,484 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 06:06:56,485 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 06:06:56,485 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 06:06:56,485 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 06:06:56,486 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 06:06:56,487 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 06:06:56,487 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 06:06:56,487 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 06:06:56,487 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 06:06:56,488 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 06:06:56,488 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 06:06:56,488 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 06:06:56,488 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 06:06:56,488 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 06:06:56,489 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 06:06:56,489 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 06:06:56,489 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 06:06:56,489 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 06:06:56,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:06:56,490 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 06:06:56,490 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 06:06:56,490 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 06:06:56,491 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 06:06:56,492 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 06:06:56,492 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 06:06:56,493 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 06:06:56,493 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 06:06:56,493 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 06:06:56,493 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_55c881ec-a2aa-46f4-8eff-99fd20702668/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 45cd9f1eda35cecb580d3b7fe5199506be9e5041f2297c1c3e22e0a862fa68be [2021-11-20 06:06:56,810 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 06:06:56,836 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 06:06:56,840 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 06:06:56,841 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 06:06:56,842 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 06:06:56,844 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/loop-lit/mcmillan2006.i [2021-11-20 06:06:56,926 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/data/b3fe97c66/5fc7321ce9724d60b7f7596dfec35ef6/FLAG2e1d5e732 [2021-11-20 06:06:57,480 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 06:06:57,480 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/sv-benchmarks/c/loop-lit/mcmillan2006.i [2021-11-20 06:06:57,497 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/data/b3fe97c66/5fc7321ce9724d60b7f7596dfec35ef6/FLAG2e1d5e732 [2021-11-20 06:06:57,809 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/data/b3fe97c66/5fc7321ce9724d60b7f7596dfec35ef6 [2021-11-20 06:06:57,811 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 06:06:57,813 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 06:06:57,814 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 06:06:57,815 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 06:06:57,818 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 06:06:57,819 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:06:57" (1/1) ... [2021-11-20 06:06:57,820 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f7e9efb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:06:57, skipping insertion in model container [2021-11-20 06:06:57,820 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:06:57" (1/1) ... [2021-11-20 06:06:57,827 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 06:06:57,840 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:06:57,976 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_55c881ec-a2aa-46f4-8eff-99fd20702668/sv-benchmarks/c/loop-lit/mcmillan2006.i[1009,1022] [2021-11-20 06:06:57,989 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:06:57,999 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 06:06:58,012 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_55c881ec-a2aa-46f4-8eff-99fd20702668/sv-benchmarks/c/loop-lit/mcmillan2006.i[1009,1022] [2021-11-20 06:06:58,018 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:06:58,034 INFO L208 MainTranslator]: Completed translation [2021-11-20 06:06:58,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:06:58 WrapperNode [2021-11-20 06:06:58,035 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 06:06:58,036 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 06:06:58,036 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 06:06:58,037 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 06:06:58,044 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:06:58" (1/1) ... [2021-11-20 06:06:58,055 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:06:58" (1/1) ... [2021-11-20 06:06:58,084 INFO L137 Inliner]: procedures = 18, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 46 [2021-11-20 06:06:58,084 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 06:06:58,085 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 06:06:58,086 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 06:06:58,086 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 06:06:58,095 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:06:58" (1/1) ... [2021-11-20 06:06:58,096 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:06:58" (1/1) ... [2021-11-20 06:06:58,111 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:06:58" (1/1) ... [2021-11-20 06:06:58,113 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:06:58" (1/1) ... [2021-11-20 06:06:58,118 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:06:58" (1/1) ... [2021-11-20 06:06:58,122 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:06:58" (1/1) ... [2021-11-20 06:06:58,124 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:06:58" (1/1) ... [2021-11-20 06:06:58,126 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 06:06:58,127 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 06:06:58,127 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 06:06:58,128 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 06:06:58,129 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:06:58" (1/1) ... [2021-11-20 06:06:58,138 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:06:58,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:06:58,164 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 06:06:58,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 06:06:58,217 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 06:06:58,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 06:06:58,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 06:06:58,218 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 06:06:58,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 06:06:58,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 06:06:58,218 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 06:06:58,278 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 06:06:58,280 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 06:06:58,397 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 06:06:58,404 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 06:06:58,404 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-20 06:06:58,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:06:58 BoogieIcfgContainer [2021-11-20 06:06:58,407 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 06:06:58,409 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 06:06:58,410 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 06:06:58,414 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 06:06:58,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 06:06:57" (1/3) ... [2021-11-20 06:06:58,415 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@661f5edd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:06:58, skipping insertion in model container [2021-11-20 06:06:58,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:06:58" (2/3) ... [2021-11-20 06:06:58,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@661f5edd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:06:58, skipping insertion in model container [2021-11-20 06:06:58,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:06:58" (3/3) ... [2021-11-20 06:06:58,418 INFO L111 eAbstractionObserver]: Analyzing ICFG mcmillan2006.i [2021-11-20 06:06:58,425 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 06:06:58,425 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 06:06:58,487 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 06:06:58,496 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 06:06:58,497 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 06:06:58,513 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 14 states have (on average 1.5) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:06:58,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-20 06:06:58,519 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:06:58,520 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:06:58,521 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:06:58,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:06:58,527 INFO L85 PathProgramCache]: Analyzing trace with hash 186158361, now seen corresponding path program 1 times [2021-11-20 06:06:58,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:06:58,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963316141] [2021-11-20 06:06:58,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:06:58,539 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:06:58,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:06:58,673 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 06:06:58,674 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:06:58,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963316141] [2021-11-20 06:06:58,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963316141] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:06:58,676 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:06:58,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 06:06:58,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061205868] [2021-11-20 06:06:58,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:06:58,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 06:06:58,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:06:58,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 06:06:58,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 06:06:58,712 INFO L87 Difference]: Start difference. First operand has 16 states, 14 states have (on average 1.5) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:06:58,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:06:58,726 INFO L93 Difference]: Finished difference Result 27 states and 34 transitions. [2021-11-20 06:06:58,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 06:06:58,728 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-20 06:06:58,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:06:58,736 INFO L225 Difference]: With dead ends: 27 [2021-11-20 06:06:58,736 INFO L226 Difference]: Without dead ends: 12 [2021-11-20 06:06:58,739 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 06:06:58,743 INFO L933 BasicCegarLoop]: 18 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, 18 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 06:06:58,745 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:06:58,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-11-20 06:06:58,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-11-20 06:06:58,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:06:58,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2021-11-20 06:06:58,780 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 8 [2021-11-20 06:06:58,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:06:58,780 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2021-11-20 06:06:58,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:06:58,781 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2021-11-20 06:06:58,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-20 06:06:58,782 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:06:58,782 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:06:58,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 06:06:58,783 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:06:58,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:06:58,784 INFO L85 PathProgramCache]: Analyzing trace with hash 180617235, now seen corresponding path program 1 times [2021-11-20 06:06:58,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:06:58,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104150530] [2021-11-20 06:06:58,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:06:58,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:06:58,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:06:58,917 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 06:06:58,917 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:06:58,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104150530] [2021-11-20 06:06:58,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104150530] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:06:58,918 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:06:58,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 06:06:58,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856676375] [2021-11-20 06:06:58,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:06:58,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:06:58,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:06:58,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:06:58,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:06:58,935 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:06:59,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:06:59,001 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2021-11-20 06:06:59,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 06:06:59,002 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-20 06:06:59,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:06:59,038 INFO L225 Difference]: With dead ends: 22 [2021-11-20 06:06:59,038 INFO L226 Difference]: Without dead ends: 14 [2021-11-20 06:06:59,038 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:06:59,040 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 4 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:06:59,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 30 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:06:59,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-11-20 06:06:59,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2021-11-20 06:06:59,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 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 06:06:59,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2021-11-20 06:06:59,045 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 8 [2021-11-20 06:06:59,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:06:59,046 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2021-11-20 06:06:59,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:06:59,046 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2021-11-20 06:06:59,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-20 06:06:59,047 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:06:59,047 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:06:59,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 06:06:59,048 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:06:59,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:06:59,049 INFO L85 PathProgramCache]: Analyzing trace with hash -875113359, now seen corresponding path program 1 times [2021-11-20 06:06:59,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:06:59,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999845398] [2021-11-20 06:06:59,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:06:59,050 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:06:59,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:06:59,260 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:06:59,261 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:06:59,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999845398] [2021-11-20 06:06:59,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999845398] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:06:59,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564317774] [2021-11-20 06:06:59,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:06:59,262 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:06:59,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:06:59,264 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:06:59,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 06:06:59,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:06:59,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-20 06:06:59,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:06:59,476 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 18 treesize of output 14 [2021-11-20 06:06:59,590 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:06:59,590 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:06:59,715 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 14 treesize of output 12 [2021-11-20 06:06:59,723 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 22 treesize of output 20 [2021-11-20 06:06:59,749 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:06:59,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1564317774] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:06:59,749 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:06:59,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 11 [2021-11-20 06:06:59,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625998800] [2021-11-20 06:06:59,750 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:06:59,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 06:06:59,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:06:59,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 06:06:59,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-20 06:06:59,752 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:06:59,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:06:59,844 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2021-11-20 06:06:59,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 06:06:59,845 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-20 06:06:59,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:06:59,846 INFO L225 Difference]: With dead ends: 21 [2021-11-20 06:06:59,846 INFO L226 Difference]: Without dead ends: 19 [2021-11-20 06:06:59,847 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 12 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2021-11-20 06:06:59,848 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 15 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:06:59,849 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 37 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:06:59,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-11-20 06:06:59,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 15. [2021-11-20 06:06:59,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:06:59,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2021-11-20 06:06:59,855 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 10 [2021-11-20 06:06:59,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:06:59,856 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-11-20 06:06:59,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:06:59,856 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2021-11-20 06:06:59,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-20 06:06:59,857 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:06:59,857 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:06:59,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 06:07:00,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:07:00,083 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:07:00,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:07:00,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1418361721, now seen corresponding path program 1 times [2021-11-20 06:07:00,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:07:00,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445035751] [2021-11-20 06:07:00,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:07:00,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:07:00,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:07:00,175 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:07:00,176 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:07:00,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445035751] [2021-11-20 06:07:00,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445035751] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:07:00,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266103664] [2021-11-20 06:07:00,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:07:00,177 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:07:00,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:07:00,181 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:07:00,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 06:07:00,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:07:00,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 06:07:00,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:07:00,372 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:07:00,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:07:00,418 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:07:00,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266103664] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:07:00,419 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:07:00,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2021-11-20 06:07:00,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413564312] [2021-11-20 06:07:00,420 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:07:00,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 06:07:00,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:07:00,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 06:07:00,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-11-20 06:07:00,422 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:07:00,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:07:00,523 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2021-11-20 06:07:00,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 06:07:00,524 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-20 06:07:00,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:07:00,525 INFO L225 Difference]: With dead ends: 30 [2021-11-20 06:07:00,527 INFO L226 Difference]: Without dead ends: 18 [2021-11-20 06:07:00,528 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2021-11-20 06:07:00,533 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 11 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:07:00,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 39 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:07:00,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-11-20 06:07:00,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2021-11-20 06:07:00,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:07:00,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2021-11-20 06:07:00,544 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 14 [2021-11-20 06:07:00,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:07:00,545 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2021-11-20 06:07:00,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:07:00,546 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2021-11-20 06:07:00,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-20 06:07:00,547 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:07:00,548 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:07:00,588 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-20 06:07:00,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:07:00,768 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:07:00,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:07:00,769 INFO L85 PathProgramCache]: Analyzing trace with hash -324855195, now seen corresponding path program 2 times [2021-11-20 06:07:00,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:07:00,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471653893] [2021-11-20 06:07:00,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:07:00,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:07:00,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:07:00,924 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:07:00,924 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:07:00,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471653893] [2021-11-20 06:07:00,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471653893] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:07:00,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166819359] [2021-11-20 06:07:00,925 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 06:07:00,925 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:07:00,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:07:00,926 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:07:00,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-20 06:07:00,975 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 06:07:00,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:07:00,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-20 06:07:00,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:07:01,025 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-20 06:07:01,194 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:07:01,194 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:07:01,284 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2021-11-20 06:07:01,293 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 24 [2021-11-20 06:07:01,319 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:07:01,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [166819359] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:07:01,322 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:07:01,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 12 [2021-11-20 06:07:01,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599322625] [2021-11-20 06:07:01,324 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:07:01,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 06:07:01,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:07:01,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 06:07:01,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-11-20 06:07:01,327 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 12 states, 12 states have (on average 2.25) internal successors, (27), 12 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:07:01,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:07:01,484 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2021-11-20 06:07:01,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-20 06:07:01,484 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.25) internal successors, (27), 12 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-20 06:07:01,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:07:01,485 INFO L225 Difference]: With dead ends: 27 [2021-11-20 06:07:01,486 INFO L226 Difference]: Without dead ends: 25 [2021-11-20 06:07:01,486 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 24 SyntacticMatches, 5 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2021-11-20 06:07:01,487 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 19 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:07:01,488 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 51 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:07:01,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-11-20 06:07:01,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 21. [2021-11-20 06:07:01,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.1) internal successors, (22), 20 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:07:01,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2021-11-20 06:07:01,494 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 16 [2021-11-20 06:07:01,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:07:01,494 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2021-11-20 06:07:01,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.25) internal successors, (27), 12 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:07:01,495 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2021-11-20 06:07:01,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 06:07:01,496 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:07:01,496 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:07:01,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-20 06:07:01,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:07:01,710 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:07:01,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:07:01,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1610985595, now seen corresponding path program 3 times [2021-11-20 06:07:01,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:07:01,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097303971] [2021-11-20 06:07:01,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:07:01,711 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:07:01,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:07:01,817 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:07:01,818 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:07:01,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097303971] [2021-11-20 06:07:01,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097303971] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:07:01,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305717788] [2021-11-20 06:07:01,819 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 06:07:01,819 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:07:01,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:07:01,826 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:07:01,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-20 06:07:01,888 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-20 06:07:01,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:07:01,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 06:07:01,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:07:02,036 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:07:02,036 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:07:02,111 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:07:02,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305717788] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:07:02,111 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:07:02,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2021-11-20 06:07:02,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121871565] [2021-11-20 06:07:02,112 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:07:02,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 06:07:02,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:07:02,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 06:07:02,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-11-20 06:07:02,114 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 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 06:07:02,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:07:02,207 INFO L93 Difference]: Finished difference Result 40 states and 42 transitions. [2021-11-20 06:07:02,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 06:07:02,207 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 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) Word has length 20 [2021-11-20 06:07:02,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:07:02,208 INFO L225 Difference]: With dead ends: 40 [2021-11-20 06:07:02,208 INFO L226 Difference]: Without dead ends: 24 [2021-11-20 06:07:02,209 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2021-11-20 06:07:02,210 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 18 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:07:02,211 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 62 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:07:02,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-11-20 06:07:02,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2021-11-20 06:07:02,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 22 states have internal predecessors, (24), 0 states have call successors, (0), 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 06:07:02,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2021-11-20 06:07:02,217 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 20 [2021-11-20 06:07:02,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:07:02,217 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2021-11-20 06:07:02,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 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 06:07:02,218 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2021-11-20 06:07:02,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-20 06:07:02,218 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:07:02,219 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:07:02,259 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-20 06:07:02,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-20 06:07:02,436 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:07:02,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:07:02,437 INFO L85 PathProgramCache]: Analyzing trace with hash 731310041, now seen corresponding path program 4 times [2021-11-20 06:07:02,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:07:02,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724514300] [2021-11-20 06:07:02,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:07:02,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:07:02,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:07:02,597 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:07:02,597 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:07:02,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724514300] [2021-11-20 06:07:02,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724514300] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:07:02,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508955859] [2021-11-20 06:07:02,603 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-20 06:07:02,603 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:07:02,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:07:02,604 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:07:02,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-20 06:07:02,650 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-20 06:07:02,651 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:07:02,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-20 06:07:02,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:07:02,728 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 15 treesize of output 11 [2021-11-20 06:07:03,230 INFO L354 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2021-11-20 06:07:03,232 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 58 treesize of output 37 [2021-11-20 06:07:03,256 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:07:03,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:07:03,709 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 25 [2021-11-20 06:07:03,721 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 42 treesize of output 36 [2021-11-20 06:07:03,748 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:07:03,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1508955859] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:07:03,748 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:07:03,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 27 [2021-11-20 06:07:03,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857861651] [2021-11-20 06:07:03,749 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:07:03,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-20 06:07:03,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:07:03,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-20 06:07:03,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=599, Unknown=0, NotChecked=0, Total=702 [2021-11-20 06:07:03,754 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 27 states, 27 states have (on average 2.0) internal successors, (54), 27 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:07:04,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:07:04,047 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions. [2021-11-20 06:07:04,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-20 06:07:04,048 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.0) internal successors, (54), 27 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-11-20 06:07:04,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:07:04,049 INFO L225 Difference]: With dead ends: 41 [2021-11-20 06:07:04,049 INFO L226 Difference]: Without dead ends: 25 [2021-11-20 06:07:04,050 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=188, Invalid=1144, Unknown=0, NotChecked=0, Total=1332 [2021-11-20 06:07:04,051 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 11 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 51 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:07:04,052 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 84 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 51 Unchecked, 0.0s Time] [2021-11-20 06:07:04,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-11-20 06:07:04,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-11-20 06:07:04,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 24 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:07:04,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2021-11-20 06:07:04,058 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 22 [2021-11-20 06:07:04,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:07:04,058 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2021-11-20 06:07:04,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.0) internal successors, (54), 27 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:07:04,058 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2021-11-20 06:07:04,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-20 06:07:04,059 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:07:04,059 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:07:04,101 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-20 06:07:04,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-20 06:07:04,275 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:07:04,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:07:04,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1471659959, now seen corresponding path program 5 times [2021-11-20 06:07:04,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:07:04,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551964181] [2021-11-20 06:07:04,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:07:04,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:07:04,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:07:04,449 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:07:04,450 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:07:04,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551964181] [2021-11-20 06:07:04,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551964181] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:07:04,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248320498] [2021-11-20 06:07:04,450 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-20 06:07:04,450 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:07:04,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:07:04,451 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:07:04,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-20 06:07:04,503 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-11-20 06:07:04,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:07:04,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-20 06:07:04,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:07:04,547 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-11-20 06:07:04,620 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-11-20 06:07:04,621 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-11-20 06:07:05,265 INFO L354 Elim1Store]: treesize reduction 42, result has 6.7 percent of original size [2021-11-20 06:07:05,265 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 65 treesize of output 40 [2021-11-20 06:07:05,285 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:07:05,286 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:07:05,853 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_32| Int)) (or (= (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_32| 4) |c_ULTIMATE.start_main_~x~0#1.offset|) 0) (+ 8 |c_ULTIMATE.start_main_~x~0#1.offset|)) 0) (< |v_ULTIMATE.start_main_~i~0#1_32| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) is different from false [2021-11-20 06:07:05,862 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 27 [2021-11-20 06:07:05,879 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 54 treesize of output 50 [2021-11-20 06:07:05,931 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2021-11-20 06:07:05,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248320498] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:07:05,931 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:07:05,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 20 [2021-11-20 06:07:05,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407778167] [2021-11-20 06:07:05,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:07:05,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-20 06:07:05,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:07:05,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-20 06:07:05,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=282, Unknown=1, NotChecked=34, Total=380 [2021-11-20 06:07:05,934 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand has 20 states, 20 states have (on average 2.35) internal successors, (47), 20 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:07:06,474 WARN L838 $PredicateComparison]: unable to prove that (and (<= |c_ULTIMATE.start_main_~i~0#1| 2) (forall ((|v_ULTIMATE.start_main_~i~0#1_32| Int)) (or (= (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_32| 4) |c_ULTIMATE.start_main_~x~0#1.offset|) 0) (+ 8 |c_ULTIMATE.start_main_~x~0#1.offset|)) 0) (< |v_ULTIMATE.start_main_~i~0#1_32| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) (<= 2 |c_ULTIMATE.start_main_~i~0#1|) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~x~0#1.offset|)) 0)) is different from false [2021-11-20 06:07:06,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:07:06,541 INFO L93 Difference]: Finished difference Result 46 states and 48 transitions. [2021-11-20 06:07:06,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-20 06:07:06,542 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.35) internal successors, (47), 20 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-20 06:07:06,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:07:06,543 INFO L225 Difference]: With dead ends: 46 [2021-11-20 06:07:06,544 INFO L226 Difference]: Without dead ends: 44 [2021-11-20 06:07:06,544 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 36 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=76, Invalid=350, Unknown=2, NotChecked=78, Total=506 [2021-11-20 06:07:06,545 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 17 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 79 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:07:06,545 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 144 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 95 Invalid, 0 Unknown, 79 Unchecked, 0.1s Time] [2021-11-20 06:07:06,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-11-20 06:07:06,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 29. [2021-11-20 06:07:06,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 28 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:07:06,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2021-11-20 06:07:06,553 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 24 [2021-11-20 06:07:06,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:07:06,553 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2021-11-20 06:07:06,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.35) internal successors, (47), 20 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:07:06,553 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2021-11-20 06:07:06,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-20 06:07:06,555 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:07:06,555 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:07:06,597 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-20 06:07:06,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:07:06,780 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:07:06,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:07:06,780 INFO L85 PathProgramCache]: Analyzing trace with hash 985881805, now seen corresponding path program 6 times [2021-11-20 06:07:06,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:07:06,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920523508] [2021-11-20 06:07:06,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:07:06,781 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:07:06,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:07:06,977 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:07:06,977 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:07:06,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920523508] [2021-11-20 06:07:06,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920523508] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:07:06,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629505637] [2021-11-20 06:07:06,977 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-20 06:07:06,977 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:07:06,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:07:06,979 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:07:06,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-20 06:07:07,042 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-11-20 06:07:07,042 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:07:07,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-20 06:07:07,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:07:07,106 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 22 treesize of output 18 [2021-11-20 06:07:07,294 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:07:07,295 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:07:07,388 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2021-11-20 06:07:07,391 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 24 [2021-11-20 06:07:07,435 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:07:07,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1629505637] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:07:07,436 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:07:07,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 18 [2021-11-20 06:07:07,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997453774] [2021-11-20 06:07:07,436 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:07:07,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-20 06:07:07,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:07:07,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-20 06:07:07,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2021-11-20 06:07:07,438 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:07:07,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:07:07,698 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2021-11-20 06:07:07,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-20 06:07:07,699 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-11-20 06:07:07,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:07:07,700 INFO L225 Difference]: With dead ends: 39 [2021-11-20 06:07:07,700 INFO L226 Difference]: Without dead ends: 37 [2021-11-20 06:07:07,700 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 46 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=92, Invalid=508, Unknown=0, NotChecked=0, Total=600 [2021-11-20 06:07:07,701 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 27 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:07:07,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 143 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 06:07:07,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-11-20 06:07:07,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 33. [2021-11-20 06:07:07,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.0625) internal successors, (34), 32 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:07:07,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2021-11-20 06:07:07,708 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 28 [2021-11-20 06:07:07,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:07:07,708 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2021-11-20 06:07:07,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:07:07,709 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2021-11-20 06:07:07,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-20 06:07:07,710 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:07:07,710 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:07:07,748 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-20 06:07:07,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-11-20 06:07:07,931 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:07:07,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:07:07,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1173257955, now seen corresponding path program 7 times [2021-11-20 06:07:07,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:07:07,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979994887] [2021-11-20 06:07:07,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:07:07,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:07:07,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:07:08,059 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 19 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:07:08,059 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:07:08,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979994887] [2021-11-20 06:07:08,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979994887] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:07:08,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474389085] [2021-11-20 06:07:08,060 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-20 06:07:08,060 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:07:08,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:07:08,062 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:07:08,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-20 06:07:08,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:07:08,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-20 06:07:08,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:07:08,342 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 32 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:07:08,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:07:08,459 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 32 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:07:08,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1474389085] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:07:08,460 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:07:08,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2021-11-20 06:07:08,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836506617] [2021-11-20 06:07:08,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:07:08,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-20 06:07:08,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:07:08,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-20 06:07:08,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2021-11-20 06:07:08,463 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand has 20 states, 20 states have (on average 2.9) internal successors, (58), 20 states have internal predecessors, (58), 0 states have call successors, (0), 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 06:07:08,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:07:08,622 INFO L93 Difference]: Finished difference Result 60 states and 62 transitions. [2021-11-20 06:07:08,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-20 06:07:08,623 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.9) internal successors, (58), 20 states have internal predecessors, (58), 0 states have call successors, (0), 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 32 [2021-11-20 06:07:08,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:07:08,624 INFO L225 Difference]: With dead ends: 60 [2021-11-20 06:07:08,624 INFO L226 Difference]: Without dead ends: 36 [2021-11-20 06:07:08,625 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=161, Invalid=489, Unknown=0, NotChecked=0, Total=650 [2021-11-20 06:07:08,626 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 20 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:07:08,626 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 86 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:07:08,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-11-20 06:07:08,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2021-11-20 06:07:08,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.0588235294117647) internal successors, (36), 34 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 06:07:08,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2021-11-20 06:07:08,635 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 32 [2021-11-20 06:07:08,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:07:08,635 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2021-11-20 06:07:08,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.9) internal successors, (58), 20 states have internal predecessors, (58), 0 states have call successors, (0), 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 06:07:08,636 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2021-11-20 06:07:08,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-20 06:07:08,637 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:07:08,637 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:07:08,680 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-20 06:07:08,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:07:08,851 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:07:08,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:07:08,852 INFO L85 PathProgramCache]: Analyzing trace with hash -92169919, now seen corresponding path program 8 times [2021-11-20 06:07:08,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:07:08,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138557368] [2021-11-20 06:07:08,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:07:08,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:07:08,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:07:09,092 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:07:09,093 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:07:09,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138557368] [2021-11-20 06:07:09,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138557368] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:07:09,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345312040] [2021-11-20 06:07:09,093 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 06:07:09,094 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:07:09,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:07:09,095 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:07:09,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-20 06:07:09,145 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 06:07:09,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:07:09,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-20 06:07:09,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:07:09,195 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-20 06:07:09,422 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:07:09,422 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:07:09,532 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2021-11-20 06:07:09,534 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 24 [2021-11-20 06:07:09,599 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:07:09,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [345312040] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:07:09,599 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:07:09,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 21 [2021-11-20 06:07:09,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825824611] [2021-11-20 06:07:09,600 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:07:09,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-20 06:07:09,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:07:09,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-20 06:07:09,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=368, Unknown=0, NotChecked=0, Total=420 [2021-11-20 06:07:09,601 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand has 21 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 21 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:07:09,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:07:09,924 INFO L93 Difference]: Finished difference Result 45 states and 46 transitions. [2021-11-20 06:07:09,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-20 06:07:09,924 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 21 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-20 06:07:09,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:07:09,925 INFO L225 Difference]: With dead ends: 45 [2021-11-20 06:07:09,925 INFO L226 Difference]: Without dead ends: 43 [2021-11-20 06:07:09,926 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 57 SyntacticMatches, 5 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=107, Invalid=705, Unknown=0, NotChecked=0, Total=812 [2021-11-20 06:07:09,927 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 28 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:07:09,927 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 160 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 06:07:09,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-11-20 06:07:09,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2021-11-20 06:07:09,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.0526315789473684) internal successors, (40), 38 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 06:07:09,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2021-11-20 06:07:09,935 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 34 [2021-11-20 06:07:09,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:07:09,936 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2021-11-20 06:07:09,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 21 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:07:09,936 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2021-11-20 06:07:09,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-20 06:07:09,938 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:07:09,938 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:07:09,978 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-20 06:07:10,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-20 06:07:10,159 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:07:10,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:07:10,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1251041623, now seen corresponding path program 9 times [2021-11-20 06:07:10,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:07:10,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40491743] [2021-11-20 06:07:10,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:07:10,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:07:10,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:07:10,334 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 33 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:07:10,334 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:07:10,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40491743] [2021-11-20 06:07:10,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40491743] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:07:10,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863313282] [2021-11-20 06:07:10,335 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 06:07:10,335 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:07:10,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:07:10,336 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:07:10,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-20 06:07:10,405 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-11-20 06:07:10,405 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:07:10,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-20 06:07:10,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:07:10,458 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 15 treesize of output 11 [2021-11-20 06:07:11,060 INFO L354 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2021-11-20 06:07:11,060 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 58 treesize of output 34 [2021-11-20 06:07:11,066 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 50 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:07:11,066 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:07:11,722 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 25 [2021-11-20 06:07:11,725 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 42 treesize of output 36 [2021-11-20 06:07:11,758 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 40 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:07:11,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863313282] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:07:11,759 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:07:11,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16, 17] total 35 [2021-11-20 06:07:11,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887198882] [2021-11-20 06:07:11,759 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:07:11,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-11-20 06:07:11,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:07:11,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-11-20 06:07:11,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=961, Unknown=0, NotChecked=0, Total=1190 [2021-11-20 06:07:11,761 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand has 35 states, 35 states have (on average 2.657142857142857) internal successors, (93), 35 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 06:07:12,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:07:12,042 INFO L93 Difference]: Finished difference Result 96 states and 100 transitions. [2021-11-20 06:07:12,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-20 06:07:12,042 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.657142857142857) internal successors, (93), 35 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 38 [2021-11-20 06:07:12,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:07:12,043 INFO L225 Difference]: With dead ends: 96 [2021-11-20 06:07:12,043 INFO L226 Difference]: Without dead ends: 43 [2021-11-20 06:07:12,045 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 660 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=383, Invalid=1779, Unknown=0, NotChecked=0, Total=2162 [2021-11-20 06:07:12,045 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 16 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 70 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:07:12,046 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 204 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 70 Unchecked, 0.0s Time] [2021-11-20 06:07:12,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-11-20 06:07:12,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-11-20 06:07:12,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.0476190476190477) internal successors, (44), 42 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:07:12,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2021-11-20 06:07:12,055 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 38 [2021-11-20 06:07:12,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:07:12,055 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2021-11-20 06:07:12,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.657142857142857) internal successors, (93), 35 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 06:07:12,055 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2021-11-20 06:07:12,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-20 06:07:12,056 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:07:12,056 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:07:12,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-20 06:07:12,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:07:12,259 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:07:12,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:07:12,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1452500589, now seen corresponding path program 10 times [2021-11-20 06:07:12,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:07:12,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196751051] [2021-11-20 06:07:12,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:07:12,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:07:12,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:07:12,531 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 1 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:07:12,531 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:07:12,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196751051] [2021-11-20 06:07:12,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196751051] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:07:12,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964712338] [2021-11-20 06:07:12,531 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-20 06:07:12,532 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:07:12,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:07:12,535 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:07:12,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-20 06:07:12,683 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-20 06:07:12,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:07:12,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-20 06:07:12,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:07:12,768 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 15 treesize of output 11 [2021-11-20 06:07:12,843 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-11-20 06:07:12,844 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 1 case distinctions, treesize of input 38 treesize of output 37 [2021-11-20 06:07:14,115 INFO L354 Elim1Store]: treesize reduction 42, result has 6.7 percent of original size [2021-11-20 06:07:14,121 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 65 treesize of output 40 [2021-11-20 06:07:14,152 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:07:14,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:07:14,785 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_81| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_81| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (= (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_81| 4) |c_ULTIMATE.start_main_~x~0#1.offset|) 0) (+ 20 |c_ULTIMATE.start_main_~x~0#1.offset|)) 0))) is different from false [2021-11-20 06:07:14,792 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 27 [2021-11-20 06:07:14,795 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 54 treesize of output 50 [2021-11-20 06:07:14,848 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 1 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2021-11-20 06:07:14,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964712338] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:07:14,848 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:07:14,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 29 [2021-11-20 06:07:14,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745219163] [2021-11-20 06:07:14,849 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:07:14,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-11-20 06:07:14,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:07:14,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-11-20 06:07:14,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=666, Unknown=1, NotChecked=52, Total=812 [2021-11-20 06:07:14,850 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand has 29 states, 29 states have (on average 2.6551724137931036) internal successors, (77), 29 states have internal predecessors, (77), 0 states have call successors, (0), 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 06:07:15,384 WARN L838 $PredicateComparison]: unable to prove that (and (<= 5 |c_ULTIMATE.start_main_~i~0#1|) (forall ((|v_ULTIMATE.start_main_~i~0#1_81| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_81| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (= (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_81| 4) |c_ULTIMATE.start_main_~x~0#1.offset|) 0) (+ 20 |c_ULTIMATE.start_main_~x~0#1.offset|)) 0))) (<= |c_ULTIMATE.start_main_~i~0#1| 5) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~x~0#1.offset|)) 0)) is different from false [2021-11-20 06:07:15,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:07:15,546 INFO L93 Difference]: Finished difference Result 76 states and 78 transitions. [2021-11-20 06:07:15,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-20 06:07:15,546 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.6551724137931036) internal successors, (77), 29 states have internal predecessors, (77), 0 states have call successors, (0), 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 42 [2021-11-20 06:07:15,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:07:15,549 INFO L225 Difference]: With dead ends: 76 [2021-11-20 06:07:15,549 INFO L226 Difference]: Without dead ends: 74 [2021-11-20 06:07:15,551 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 69 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=124, Invalid=938, Unknown=2, NotChecked=126, Total=1190 [2021-11-20 06:07:15,554 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 46 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 120 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:07:15,555 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 324 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 254 Invalid, 0 Unknown, 120 Unchecked, 0.2s Time] [2021-11-20 06:07:15,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-11-20 06:07:15,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 47. [2021-11-20 06:07:15,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.0434782608695652) internal successors, (48), 46 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:07:15,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2021-11-20 06:07:15,578 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 42 [2021-11-20 06:07:15,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:07:15,578 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2021-11-20 06:07:15,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.6551724137931036) internal successors, (77), 29 states have internal predecessors, (77), 0 states have call successors, (0), 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 06:07:15,579 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2021-11-20 06:07:15,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-20 06:07:15,580 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:07:15,580 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:07:15,621 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-20 06:07:15,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-20 06:07:15,805 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:07:15,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:07:15,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1870665559, now seen corresponding path program 11 times [2021-11-20 06:07:15,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:07:15,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314353785] [2021-11-20 06:07:15,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:07:15,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:07:15,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:07:16,129 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:07:16,130 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:07:16,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314353785] [2021-11-20 06:07:16,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314353785] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:07:16,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836062102] [2021-11-20 06:07:16,130 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-20 06:07:16,130 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:07:16,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:07:16,135 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:07:16,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-20 06:07:16,242 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-11-20 06:07:16,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:07:16,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 34 conjunts are in the unsatisfiable core [2021-11-20 06:07:16,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:07:16,313 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 22 treesize of output 18 [2021-11-20 06:07:16,667 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:07:16,667 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:07:16,824 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2021-11-20 06:07:16,826 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 24 [2021-11-20 06:07:16,902 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:07:16,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836062102] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:07:16,903 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:07:16,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 18] total 27 [2021-11-20 06:07:16,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194497119] [2021-11-20 06:07:16,904 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:07:16,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-20 06:07:16,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:07:16,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-20 06:07:16,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=634, Unknown=0, NotChecked=0, Total=702 [2021-11-20 06:07:16,906 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand has 27 states, 27 states have (on average 2.8518518518518516) internal successors, (77), 27 states have internal predecessors, (77), 0 states have call successors, (0), 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 06:07:17,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:07:17,395 INFO L93 Difference]: Finished difference Result 57 states and 58 transitions. [2021-11-20 06:07:17,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-20 06:07:17,396 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.8518518518518516) internal successors, (77), 27 states have internal predecessors, (77), 0 states have call successors, (0), 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 46 [2021-11-20 06:07:17,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:07:17,397 INFO L225 Difference]: With dead ends: 57 [2021-11-20 06:07:17,397 INFO L226 Difference]: Without dead ends: 55 [2021-11-20 06:07:17,398 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 79 SyntacticMatches, 5 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=137, Invalid=1195, Unknown=0, NotChecked=0, Total=1332 [2021-11-20 06:07:17,400 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 36 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 06:07:17,400 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 278 Invalid, 619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 587 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 06:07:17,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-11-20 06:07:17,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 51. [2021-11-20 06:07:17,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.04) internal successors, (52), 50 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:07:17,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2021-11-20 06:07:17,424 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 46 [2021-11-20 06:07:17,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:07:17,424 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2021-11-20 06:07:17,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.8518518518518516) internal successors, (77), 27 states have internal predecessors, (77), 0 states have call successors, (0), 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 06:07:17,425 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2021-11-20 06:07:17,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-20 06:07:17,426 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:07:17,426 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:07:17,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-20 06:07:17,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-20 06:07:17,643 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:07:17,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:07:17,643 INFO L85 PathProgramCache]: Analyzing trace with hash 277462207, now seen corresponding path program 12 times [2021-11-20 06:07:17,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:07:17,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224783333] [2021-11-20 06:07:17,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:07:17,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:07:17,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:07:17,881 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 73 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:07:17,881 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:07:17,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224783333] [2021-11-20 06:07:17,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224783333] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:07:17,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118936173] [2021-11-20 06:07:17,881 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-20 06:07:17,882 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:07:17,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:07:17,883 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:07:17,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-20 06:07:17,964 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-11-20 06:07:17,964 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:07:17,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-20 06:07:17,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:07:18,351 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 98 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:07:18,351 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:07:18,480 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 98 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:07:18,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [118936173] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:07:18,481 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:07:18,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 29 [2021-11-20 06:07:18,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089460361] [2021-11-20 06:07:18,482 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:07:18,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-11-20 06:07:18,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:07:18,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-11-20 06:07:18,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=618, Unknown=0, NotChecked=0, Total=812 [2021-11-20 06:07:18,485 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand has 29 states, 29 states have (on average 3.0344827586206895) internal successors, (88), 29 states have internal predecessors, (88), 0 states have call successors, (0), 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 06:07:18,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:07:18,689 INFO L93 Difference]: Finished difference Result 90 states and 92 transitions. [2021-11-20 06:07:18,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-20 06:07:18,689 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.0344827586206895) internal successors, (88), 29 states have internal predecessors, (88), 0 states have call successors, (0), 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 50 [2021-11-20 06:07:18,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:07:18,690 INFO L225 Difference]: With dead ends: 90 [2021-11-20 06:07:18,690 INFO L226 Difference]: Without dead ends: 54 [2021-11-20 06:07:18,691 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=332, Invalid=1074, Unknown=0, NotChecked=0, Total=1406 [2021-11-20 06:07:18,692 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 23 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:07:18,692 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 159 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:07:18,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-11-20 06:07:18,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2021-11-20 06:07:18,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.0384615384615385) internal successors, (54), 52 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:07:18,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2021-11-20 06:07:18,701 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 50 [2021-11-20 06:07:18,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:07:18,701 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2021-11-20 06:07:18,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.0344827586206895) internal successors, (88), 29 states have internal predecessors, (88), 0 states have call successors, (0), 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 06:07:18,702 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2021-11-20 06:07:18,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-20 06:07:18,702 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:07:18,703 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:07:18,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-20 06:07:18,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-20 06:07:18,907 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:07:18,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:07:18,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1193657443, now seen corresponding path program 13 times [2021-11-20 06:07:18,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:07:18,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581871273] [2021-11-20 06:07:18,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:07:18,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:07:18,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:07:19,299 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:07:19,299 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:07:19,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581871273] [2021-11-20 06:07:19,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581871273] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:07:19,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513296044] [2021-11-20 06:07:19,299 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-20 06:07:19,300 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:07:19,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:07:19,303 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:07:19,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-20 06:07:19,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:07:19,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 38 conjunts are in the unsatisfiable core [2021-11-20 06:07:19,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:07:19,464 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 22 treesize of output 18 [2021-11-20 06:07:19,896 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:07:19,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:07:20,049 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2021-11-20 06:07:20,051 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 24 [2021-11-20 06:07:20,152 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:07:20,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1513296044] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:07:20,153 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:07:20,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 30 [2021-11-20 06:07:20,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85765417] [2021-11-20 06:07:20,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:07:20,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-11-20 06:07:20,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:07:20,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-11-20 06:07:20,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=794, Unknown=0, NotChecked=0, Total=870 [2021-11-20 06:07:20,156 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand has 30 states, 30 states have (on average 2.9) internal successors, (87), 30 states have internal predecessors, (87), 0 states have call successors, (0), 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 06:07:20,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:07:20,677 INFO L93 Difference]: Finished difference Result 63 states and 64 transitions. [2021-11-20 06:07:20,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-20 06:07:20,677 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.9) internal successors, (87), 30 states have internal predecessors, (87), 0 states have call successors, (0), 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 52 [2021-11-20 06:07:20,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:07:20,678 INFO L225 Difference]: With dead ends: 63 [2021-11-20 06:07:20,678 INFO L226 Difference]: Without dead ends: 61 [2021-11-20 06:07:20,678 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 90 SyntacticMatches, 5 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=152, Invalid=1488, Unknown=0, NotChecked=0, Total=1640 [2021-11-20 06:07:20,679 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 41 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 695 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 06:07:20,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 332 Invalid, 732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 695 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 06:07:20,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-11-20 06:07:20,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 57. [2021-11-20 06:07:20,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.0357142857142858) internal successors, (58), 56 states have internal predecessors, (58), 0 states have call successors, (0), 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 06:07:20,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2021-11-20 06:07:20,688 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 52 [2021-11-20 06:07:20,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:07:20,689 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2021-11-20 06:07:20,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.9) internal successors, (87), 30 states have internal predecessors, (87), 0 states have call successors, (0), 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 06:07:20,689 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2021-11-20 06:07:20,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-20 06:07:20,690 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:07:20,690 INFO L514 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:07:20,712 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-20 06:07:20,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-20 06:07:20,899 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:07:20,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:07:20,899 INFO L85 PathProgramCache]: Analyzing trace with hash 215578035, now seen corresponding path program 14 times [2021-11-20 06:07:20,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:07:20,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410890578] [2021-11-20 06:07:20,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:07:20,899 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:07:20,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:07:21,125 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 99 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:07:21,126 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:07:21,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410890578] [2021-11-20 06:07:21,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410890578] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:07:21,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011733320] [2021-11-20 06:07:21,126 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 06:07:21,126 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:07:21,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:07:21,128 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:07:21,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-20 06:07:21,188 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 06:07:21,188 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:07:21,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-20 06:07:21,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:07:21,652 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 128 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:07:21,652 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:07:21,810 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 128 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:07:21,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2011733320] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:07:21,810 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:07:21,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 32 [2021-11-20 06:07:21,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703635990] [2021-11-20 06:07:21,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:07:21,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-20 06:07:21,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:07:21,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-20 06:07:21,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=757, Unknown=0, NotChecked=0, Total=992 [2021-11-20 06:07:21,813 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand has 32 states, 32 states have (on average 3.0625) internal successors, (98), 32 states have internal predecessors, (98), 0 states have call successors, (0), 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 06:07:22,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:07:22,061 INFO L93 Difference]: Finished difference Result 100 states and 102 transitions. [2021-11-20 06:07:22,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-20 06:07:22,061 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.0625) internal successors, (98), 32 states have internal predecessors, (98), 0 states have call successors, (0), 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 56 [2021-11-20 06:07:22,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:07:22,062 INFO L225 Difference]: With dead ends: 100 [2021-11-20 06:07:22,062 INFO L226 Difference]: Without dead ends: 60 [2021-11-20 06:07:22,063 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=403, Invalid=1319, Unknown=0, NotChecked=0, Total=1722 [2021-11-20 06:07:22,063 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 24 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:07:22,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 156 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:07:22,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-11-20 06:07:22,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2021-11-20 06:07:22,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.0344827586206897) internal successors, (60), 58 states have internal predecessors, (60), 0 states have call successors, (0), 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 06:07:22,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 60 transitions. [2021-11-20 06:07:22,073 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 60 transitions. Word has length 56 [2021-11-20 06:07:22,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:07:22,073 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 60 transitions. [2021-11-20 06:07:22,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.0625) internal successors, (98), 32 states have internal predecessors, (98), 0 states have call successors, (0), 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 06:07:22,074 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 60 transitions. [2021-11-20 06:07:22,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-20 06:07:22,075 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:07:22,075 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:07:22,113 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-20 06:07:22,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-20 06:07:22,291 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:07:22,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:07:22,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1778046481, now seen corresponding path program 15 times [2021-11-20 06:07:22,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:07:22,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721983643] [2021-11-20 06:07:22,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:07:22,291 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:07:22,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:07:22,700 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 0 proven. 209 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:07:22,700 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:07:22,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721983643] [2021-11-20 06:07:22,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721983643] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:07:22,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [979390650] [2021-11-20 06:07:22,701 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 06:07:22,701 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:07:22,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:07:22,702 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:07:22,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-20 06:07:22,790 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-11-20 06:07:22,790 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:07:22,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-20 06:07:22,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:07:23,036 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 15 treesize of output 11 [2021-11-20 06:07:24,223 INFO L354 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2021-11-20 06:07:24,224 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 58 treesize of output 37 [2021-11-20 06:07:24,263 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 120 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:07:24,263 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:07:25,511 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 25 [2021-11-20 06:07:25,513 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 42 treesize of output 36 [2021-11-20 06:07:25,567 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 112 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:07:25,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [979390650] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:07:25,568 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:07:25,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 24, 24] total 57 [2021-11-20 06:07:25,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776472927] [2021-11-20 06:07:25,569 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:07:25,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2021-11-20 06:07:25,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:07:25,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2021-11-20 06:07:25,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=370, Invalid=2822, Unknown=0, NotChecked=0, Total=3192 [2021-11-20 06:07:25,572 INFO L87 Difference]: Start difference. First operand 59 states and 60 transitions. Second operand has 57 states, 57 states have (on average 2.6315789473684212) internal successors, (150), 57 states have internal predecessors, (150), 0 states have call successors, (0), 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 06:07:27,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:07:27,011 INFO L93 Difference]: Finished difference Result 101 states and 103 transitions. [2021-11-20 06:07:27,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-11-20 06:07:27,012 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 2.6315789473684212) internal successors, (150), 57 states have internal predecessors, (150), 0 states have call successors, (0), 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 58 [2021-11-20 06:07:27,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:07:27,013 INFO L225 Difference]: With dead ends: 101 [2021-11-20 06:07:27,013 INFO L226 Difference]: Without dead ends: 61 [2021-11-20 06:07:27,017 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 92 SyntacticMatches, 1 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1603 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=875, Invalid=7681, Unknown=0, NotChecked=0, Total=8556 [2021-11-20 06:07:27,017 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 26 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 216 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:07:27,018 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 413 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 225 Invalid, 0 Unknown, 216 Unchecked, 0.1s Time] [2021-11-20 06:07:27,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-11-20 06:07:27,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2021-11-20 06:07:27,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.0333333333333334) internal successors, (62), 60 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:07:27,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 62 transitions. [2021-11-20 06:07:27,029 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 62 transitions. Word has length 58 [2021-11-20 06:07:27,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:07:27,030 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 62 transitions. [2021-11-20 06:07:27,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 2.6315789473684212) internal successors, (150), 57 states have internal predecessors, (150), 0 states have call successors, (0), 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 06:07:27,030 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 62 transitions. [2021-11-20 06:07:27,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-20 06:07:27,032 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:07:27,032 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:07:27,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-20 06:07:27,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:07:27,247 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:07:27,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:07:27,248 INFO L85 PathProgramCache]: Analyzing trace with hash 71669487, now seen corresponding path program 16 times [2021-11-20 06:07:27,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:07:27,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118456394] [2021-11-20 06:07:27,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:07:27,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:07:27,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:07:27,604 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 1 proven. 227 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:07:27,604 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:07:27,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118456394] [2021-11-20 06:07:27,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118456394] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:07:27,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861334092] [2021-11-20 06:07:27,605 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-20 06:07:27,605 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:07:27,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:07:27,616 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:07:27,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-20 06:07:27,962 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-20 06:07:27,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:07:27,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 43 conjunts are in the unsatisfiable core [2021-11-20 06:07:27,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:07:28,044 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 22 treesize of output 18 [2021-11-20 06:07:28,074 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-11-20 06:07:28,075 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2021-11-20 06:07:28,489 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 226 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 06:07:28,489 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:07:29,177 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~i~0#1| Int)) (= (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base|) (+ (* |ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~x~0#1.offset|) 0) (+ 32 |c_ULTIMATE.start_main_~x~0#1.offset|)) 0)) is different from false [2021-11-20 06:07:29,185 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 23 treesize of output 21 [2021-11-20 06:07:29,196 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 49 treesize of output 45 [2021-11-20 06:07:29,274 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 209 refuted. 0 times theorem prover too weak. 0 trivial. 19 not checked. [2021-11-20 06:07:29,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861334092] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:07:29,275 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:07:29,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 22, 23] total 35 [2021-11-20 06:07:29,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939632449] [2021-11-20 06:07:29,275 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:07:29,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-11-20 06:07:29,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:07:29,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-11-20 06:07:29,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=1025, Unknown=1, NotChecked=64, Total=1190 [2021-11-20 06:07:29,277 INFO L87 Difference]: Start difference. First operand 61 states and 62 transitions. Second operand has 35 states, 35 states have (on average 2.914285714285714) internal successors, (102), 35 states have internal predecessors, (102), 0 states have call successors, (0), 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 06:07:29,859 WARN L838 $PredicateComparison]: unable to prove that (and (<= |c_ULTIMATE.start_main_~i~0#1| 8) (forall ((|ULTIMATE.start_main_~i~0#1| Int)) (= (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base|) (+ (* |ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~x~0#1.offset|) 0) (+ 32 |c_ULTIMATE.start_main_~x~0#1.offset|)) 0)) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~x~0#1.offset|)) 0) (<= 8 |c_ULTIMATE.start_main_~i~0#1|)) is different from false [2021-11-20 06:07:30,331 WARN L838 $PredicateComparison]: unable to prove that (and (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base|) (+ 32 |c_ULTIMATE.start_main_~x~0#1.offset|)) 0) (forall ((|ULTIMATE.start_main_~i~0#1| Int)) (= (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base|) (+ (* |ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~x~0#1.offset|) 0) (+ 32 |c_ULTIMATE.start_main_~x~0#1.offset|)) 0))) is different from false [2021-11-20 06:07:30,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:07:30,708 INFO L93 Difference]: Finished difference Result 70 states and 71 transitions. [2021-11-20 06:07:30,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-20 06:07:30,709 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.914285714285714) internal successors, (102), 35 states have internal predecessors, (102), 0 states have call successors, (0), 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 60 [2021-11-20 06:07:30,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:07:30,709 INFO L225 Difference]: With dead ends: 70 [2021-11-20 06:07:30,709 INFO L226 Difference]: Without dead ends: 68 [2021-11-20 06:07:30,710 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 103 SyntacticMatches, 6 SemanticMatches, 47 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=199, Invalid=1880, Unknown=3, NotChecked=270, Total=2352 [2021-11-20 06:07:30,711 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 42 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 928 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 1032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 928 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 64 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 06:07:30,711 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 466 Invalid, 1032 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 928 Invalid, 0 Unknown, 64 Unchecked, 0.4s Time] [2021-11-20 06:07:30,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-11-20 06:07:30,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 65. [2021-11-20 06:07:30,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.03125) internal successors, (66), 64 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:07:30,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions. [2021-11-20 06:07:30,720 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 60 [2021-11-20 06:07:30,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:07:30,720 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 66 transitions. [2021-11-20 06:07:30,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.914285714285714) internal successors, (102), 35 states have internal predecessors, (102), 0 states have call successors, (0), 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 06:07:30,721 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions. [2021-11-20 06:07:30,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-20 06:07:30,722 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:07:30,722 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:07:30,758 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-20 06:07:30,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:07:30,944 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:07:30,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:07:30,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1314727931, now seen corresponding path program 17 times [2021-11-20 06:07:30,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:07:30,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551521231] [2021-11-20 06:07:30,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:07:30,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:07:30,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:07:31,319 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 0 proven. 262 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:07:31,319 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:07:31,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551521231] [2021-11-20 06:07:31,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551521231] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:07:31,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751607511] [2021-11-20 06:07:31,320 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-20 06:07:31,320 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:07:31,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:07:31,320 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:07:31,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-20 06:07:31,456 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2021-11-20 06:07:31,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:07:31,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 46 conjunts are in the unsatisfiable core [2021-11-20 06:07:31,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:07:31,540 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 22 treesize of output 18 [2021-11-20 06:07:32,085 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 0 proven. 262 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:07:32,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:07:32,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2021-11-20 06:07:32,257 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 24 [2021-11-20 06:07:32,359 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 0 proven. 262 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:07:32,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1751607511] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:07:32,359 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:07:32,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24, 24] total 36 [2021-11-20 06:07:32,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463890631] [2021-11-20 06:07:32,360 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:07:32,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-11-20 06:07:32,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:07:32,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-11-20 06:07:32,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=1168, Unknown=0, NotChecked=0, Total=1260 [2021-11-20 06:07:32,362 INFO L87 Difference]: Start difference. First operand 65 states and 66 transitions. Second operand has 36 states, 36 states have (on average 2.9722222222222223) internal successors, (107), 36 states have internal predecessors, (107), 0 states have call successors, (0), 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 06:07:33,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:07:33,107 INFO L93 Difference]: Finished difference Result 75 states and 76 transitions. [2021-11-20 06:07:33,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-20 06:07:33,108 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.9722222222222223) internal successors, (107), 36 states have internal predecessors, (107), 0 states have call successors, (0), 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 64 [2021-11-20 06:07:33,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:07:33,108 INFO L225 Difference]: With dead ends: 75 [2021-11-20 06:07:33,108 INFO L226 Difference]: Without dead ends: 73 [2021-11-20 06:07:33,109 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 112 SyntacticMatches, 5 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=182, Invalid=2170, Unknown=0, NotChecked=0, Total=2352 [2021-11-20 06:07:33,110 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 41 mSDsluCounter, 593 mSDsCounter, 0 mSdLazyCounter, 1349 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 1391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-20 06:07:33,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 619 Invalid, 1391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1349 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-20 06:07:33,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-11-20 06:07:33,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 69. [2021-11-20 06:07:33,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 1.0294117647058822) internal successors, (70), 68 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 06:07:33,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 70 transitions. [2021-11-20 06:07:33,123 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 70 transitions. Word has length 64 [2021-11-20 06:07:33,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:07:33,124 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 70 transitions. [2021-11-20 06:07:33,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.9722222222222223) internal successors, (107), 36 states have internal predecessors, (107), 0 states have call successors, (0), 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 06:07:33,124 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 70 transitions. [2021-11-20 06:07:33,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-20 06:07:33,125 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:07:33,125 INFO L514 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:07:33,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-20 06:07:33,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:07:33,343 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:07:33,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:07:33,343 INFO L85 PathProgramCache]: Analyzing trace with hash -38953445, now seen corresponding path program 18 times [2021-11-20 06:07:33,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:07:33,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353040619] [2021-11-20 06:07:33,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:07:33,343 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:07:33,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:07:33,599 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 163 proven. 137 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:07:33,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:07:33,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353040619] [2021-11-20 06:07:33,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353040619] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:07:33,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704876384] [2021-11-20 06:07:33,600 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-20 06:07:33,601 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:07:33,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:07:33,602 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:07:33,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-20 06:07:33,867 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2021-11-20 06:07:33,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:07:33,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-20 06:07:33,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:07:34,393 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 200 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:07:34,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:07:34,557 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 200 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:07:34,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704876384] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:07:34,558 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:07:34,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 38 [2021-11-20 06:07:34,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686384578] [2021-11-20 06:07:34,558 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:07:34,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-11-20 06:07:34,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:07:34,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-11-20 06:07:34,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=329, Invalid=1077, Unknown=0, NotChecked=0, Total=1406 [2021-11-20 06:07:34,560 INFO L87 Difference]: Start difference. First operand 69 states and 70 transitions. Second operand has 38 states, 38 states have (on average 3.1052631578947367) internal successors, (118), 38 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:07:34,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:07:34,848 INFO L93 Difference]: Finished difference Result 120 states and 122 transitions. [2021-11-20 06:07:34,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-20 06:07:34,848 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.1052631578947367) internal successors, (118), 38 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-20 06:07:34,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:07:34,849 INFO L225 Difference]: With dead ends: 120 [2021-11-20 06:07:34,850 INFO L226 Difference]: Without dead ends: 72 [2021-11-20 06:07:34,851 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=566, Invalid=1884, Unknown=0, NotChecked=0, Total=2450 [2021-11-20 06:07:34,852 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 26 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:07:34,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 227 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:07:34,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-11-20 06:07:34,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2021-11-20 06:07:34,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.0285714285714285) internal successors, (72), 70 states have internal predecessors, (72), 0 states have call successors, (0), 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 06:07:34,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2021-11-20 06:07:34,865 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 68 [2021-11-20 06:07:34,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:07:34,865 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2021-11-20 06:07:34,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.1052631578947367) internal successors, (118), 38 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:07:34,866 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2021-11-20 06:07:34,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-20 06:07:34,867 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:07:34,867 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:07:34,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-20 06:07:35,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-11-20 06:07:35,079 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:07:35,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:07:35,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1742430585, now seen corresponding path program 19 times [2021-11-20 06:07:35,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:07:35,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287338052] [2021-11-20 06:07:35,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:07:35,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:07:35,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:07:35,489 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 0 proven. 321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:07:35,489 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:07:35,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287338052] [2021-11-20 06:07:35,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287338052] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:07:35,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818640862] [2021-11-20 06:07:35,489 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-20 06:07:35,490 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:07:35,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:07:35,490 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:07:35,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-20 06:07:35,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:07:35,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 50 conjunts are in the unsatisfiable core [2021-11-20 06:07:35,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:07:35,634 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-20 06:07:36,149 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 0 proven. 321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:07:36,149 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:07:36,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2021-11-20 06:07:36,323 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 24 [2021-11-20 06:07:36,417 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 0 proven. 321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:07:36,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818640862] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:07:36,418 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:07:36,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26, 26] total 39 [2021-11-20 06:07:36,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725912856] [2021-11-20 06:07:36,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:07:36,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-11-20 06:07:36,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:07:36,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-11-20 06:07:36,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=1382, Unknown=0, NotChecked=0, Total=1482 [2021-11-20 06:07:36,420 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand has 39 states, 39 states have (on average 3.0) internal successors, (117), 39 states have internal predecessors, (117), 0 states have call successors, (0), 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 06:07:37,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:07:37,287 INFO L93 Difference]: Finished difference Result 81 states and 82 transitions. [2021-11-20 06:07:37,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-20 06:07:37,290 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.0) internal successors, (117), 39 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-11-20 06:07:37,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:07:37,291 INFO L225 Difference]: With dead ends: 81 [2021-11-20 06:07:37,291 INFO L226 Difference]: Without dead ends: 79 [2021-11-20 06:07:37,292 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 123 SyntacticMatches, 5 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=197, Invalid=2559, Unknown=0, NotChecked=0, Total=2756 [2021-11-20 06:07:37,293 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 50 mSDsluCounter, 712 mSDsCounter, 0 mSdLazyCounter, 1515 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 740 SdHoareTripleChecker+Invalid, 1564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-20 06:07:37,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 740 Invalid, 1564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1515 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-20 06:07:37,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-11-20 06:07:37,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 75. [2021-11-20 06:07:37,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.027027027027027) internal successors, (76), 74 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 06:07:37,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2021-11-20 06:07:37,305 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 70 [2021-11-20 06:07:37,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:07:37,305 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2021-11-20 06:07:37,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.0) internal successors, (117), 39 states have internal predecessors, (117), 0 states have call successors, (0), 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 06:07:37,305 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2021-11-20 06:07:37,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-20 06:07:37,306 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:07:37,306 INFO L514 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:07:37,332 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-20 06:07:37,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:07:37,511 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:07:37,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:07:37,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1759268239, now seen corresponding path program 20 times [2021-11-20 06:07:37,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:07:37,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484013539] [2021-11-20 06:07:37,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:07:37,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:07:37,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:07:37,815 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 201 proven. 162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:07:37,815 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:07:37,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484013539] [2021-11-20 06:07:37,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484013539] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:07:37,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083647718] [2021-11-20 06:07:37,816 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 06:07:37,816 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:07:37,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:07:37,817 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:07:37,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-20 06:07:37,870 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 06:07:37,870 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:07:37,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-20 06:07:37,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:07:38,488 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 242 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:07:38,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:07:38,705 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 242 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:07:38,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1083647718] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:07:38,705 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:07:38,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 41 [2021-11-20 06:07:38,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686147765] [2021-11-20 06:07:38,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:07:38,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-11-20 06:07:38,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:07:38,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-11-20 06:07:38,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=382, Invalid=1258, Unknown=0, NotChecked=0, Total=1640 [2021-11-20 06:07:38,708 INFO L87 Difference]: Start difference. First operand 75 states and 76 transitions. Second operand has 41 states, 41 states have (on average 3.1219512195121952) internal successors, (128), 41 states have internal predecessors, (128), 0 states have call successors, (0), 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 06:07:39,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:07:39,060 INFO L93 Difference]: Finished difference Result 130 states and 132 transitions. [2021-11-20 06:07:39,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-20 06:07:39,060 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.1219512195121952) internal successors, (128), 41 states have internal predecessors, (128), 0 states have call successors, (0), 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 74 [2021-11-20 06:07:39,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:07:39,061 INFO L225 Difference]: With dead ends: 130 [2021-11-20 06:07:39,061 INFO L226 Difference]: Without dead ends: 78 [2021-11-20 06:07:39,063 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 630 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=658, Invalid=2204, Unknown=0, NotChecked=0, Total=2862 [2021-11-20 06:07:39,063 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 27 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:07:39,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 239 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:07:39,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-11-20 06:07:39,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2021-11-20 06:07:39,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.0263157894736843) internal successors, (78), 76 states have internal predecessors, (78), 0 states have call successors, (0), 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 06:07:39,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 78 transitions. [2021-11-20 06:07:39,077 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 78 transitions. Word has length 74 [2021-11-20 06:07:39,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:07:39,077 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 78 transitions. [2021-11-20 06:07:39,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.1219512195121952) internal successors, (128), 41 states have internal predecessors, (128), 0 states have call successors, (0), 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 06:07:39,078 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 78 transitions. [2021-11-20 06:07:39,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-20 06:07:39,079 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:07:39,079 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:07:39,105 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-11-20 06:07:39,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-11-20 06:07:39,287 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:07:39,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:07:39,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1997172115, now seen corresponding path program 21 times [2021-11-20 06:07:39,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:07:39,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412937518] [2021-11-20 06:07:39,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:07:39,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:07:39,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:07:39,801 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 0 proven. 386 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:07:39,802 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:07:39,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412937518] [2021-11-20 06:07:39,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412937518] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:07:39,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403592898] [2021-11-20 06:07:39,802 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 06:07:39,802 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:07:39,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:07:39,803 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:07:39,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-11-20 06:07:39,999 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2021-11-20 06:07:39,999 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:07:40,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-20 06:07:40,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:07:40,323 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 15 treesize of output 11 [2021-11-20 06:07:41,828 INFO L354 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2021-11-20 06:07:41,829 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 58 treesize of output 37 [2021-11-20 06:07:41,881 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 231 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:07:41,881 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:07:43,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 25 [2021-11-20 06:07:43,409 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 42 treesize of output 36 [2021-11-20 06:07:43,457 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 220 proven. 166 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:07:43,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1403592898] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:07:43,458 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:07:43,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 30, 30] total 72 [2021-11-20 06:07:43,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363891875] [2021-11-20 06:07:43,458 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:07:43,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2021-11-20 06:07:43,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:07:43,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2021-11-20 06:07:43,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=571, Invalid=4541, Unknown=0, NotChecked=0, Total=5112 [2021-11-20 06:07:43,461 INFO L87 Difference]: Start difference. First operand 77 states and 78 transitions. Second operand has 72 states, 72 states have (on average 2.75) internal successors, (198), 72 states have internal predecessors, (198), 0 states have call successors, (0), 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 06:07:45,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:07:45,216 INFO L93 Difference]: Finished difference Result 131 states and 133 transitions. [2021-11-20 06:07:45,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-11-20 06:07:45,216 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 2.75) internal successors, (198), 72 states have internal predecessors, (198), 0 states have call successors, (0), 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 76 [2021-11-20 06:07:45,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:07:45,217 INFO L225 Difference]: With dead ends: 131 [2021-11-20 06:07:45,217 INFO L226 Difference]: Without dead ends: 79 [2021-11-20 06:07:45,221 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 122 SyntacticMatches, 1 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2644 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=1355, Invalid=12925, Unknown=0, NotChecked=0, Total=14280 [2021-11-20 06:07:45,222 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 57 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 355 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:07:45,223 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 603 Invalid, 684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 324 Invalid, 0 Unknown, 355 Unchecked, 0.1s Time] [2021-11-20 06:07:45,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-11-20 06:07:45,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2021-11-20 06:07:45,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.0256410256410255) internal successors, (80), 78 states have internal predecessors, (80), 0 states have call successors, (0), 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 06:07:45,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 80 transitions. [2021-11-20 06:07:45,236 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 80 transitions. Word has length 76 [2021-11-20 06:07:45,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:07:45,236 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 80 transitions. [2021-11-20 06:07:45,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 2.75) internal successors, (198), 72 states have internal predecessors, (198), 0 states have call successors, (0), 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 06:07:45,237 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 80 transitions. [2021-11-20 06:07:45,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-20 06:07:45,238 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:07:45,238 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:07:45,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-11-20 06:07:45,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-11-20 06:07:45,443 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:07:45,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:07:45,443 INFO L85 PathProgramCache]: Analyzing trace with hash 131143627, now seen corresponding path program 22 times [2021-11-20 06:07:45,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:07:45,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890196473] [2021-11-20 06:07:45,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:07:45,443 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:07:45,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:07:45,929 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 1 proven. 410 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:07:45,929 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:07:45,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890196473] [2021-11-20 06:07:45,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890196473] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:07:45,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488859885] [2021-11-20 06:07:45,930 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-20 06:07:45,930 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:07:45,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:07:45,955 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:07:45,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-20 06:07:46,328 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-20 06:07:46,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:07:46,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 52 conjunts are in the unsatisfiable core [2021-11-20 06:07:46,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:07:46,644 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 15 treesize of output 11 [2021-11-20 06:07:46,720 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-11-20 06:07:46,720 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-11-20 06:07:48,223 INFO L354 Elim1Store]: treesize reduction 48, result has 5.9 percent of original size [2021-11-20 06:07:48,224 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 70 treesize of output 40 [2021-11-20 06:07:48,261 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 231 proven. 180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:07:48,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:07:53,449 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 36 treesize of output 34 [2021-11-20 06:07:53,452 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 74 treesize of output 67 [2021-11-20 06:07:53,505 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 14 proven. 395 refuted. 2 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:07:53,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488859885] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:07:53,505 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:07:53,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 32, 32] total 77 [2021-11-20 06:07:53,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508750427] [2021-11-20 06:07:53,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:07:53,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2021-11-20 06:07:53,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:07:53,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2021-11-20 06:07:53,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=601, Invalid=5244, Unknown=7, NotChecked=0, Total=5852 [2021-11-20 06:07:53,507 INFO L87 Difference]: Start difference. First operand 79 states and 80 transitions. Second operand has 77 states, 77 states have (on average 2.6493506493506493) internal successors, (204), 77 states have internal predecessors, (204), 0 states have call successors, (0), 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 06:07:57,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:07:57,982 INFO L93 Difference]: Finished difference Result 134 states and 137 transitions. [2021-11-20 06:07:57,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-11-20 06:07:57,983 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 2.6493506493506493) internal successors, (204), 77 states have internal predecessors, (204), 0 states have call successors, (0), 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 78 [2021-11-20 06:07:57,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:07:57,983 INFO L225 Difference]: With dead ends: 134 [2021-11-20 06:07:57,983 INFO L226 Difference]: Without dead ends: 0 [2021-11-20 06:07:57,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 143 SyntacticMatches, 2 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3861 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=1485, Invalid=16597, Unknown=8, NotChecked=0, Total=18090 [2021-11-20 06:07:57,986 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 39 mSDsluCounter, 682 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 153 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:07:57,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 708 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 356 Invalid, 0 Unknown, 153 Unchecked, 0.2s Time] [2021-11-20 06:07:57,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-20 06:07:57,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-20 06:07:57,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 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 06:07:57,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-20 06:07:57,987 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 78 [2021-11-20 06:07:57,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:07:57,987 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-20 06:07:57,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 2.6493506493506493) internal successors, (204), 77 states have internal predecessors, (204), 0 states have call successors, (0), 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 06:07:57,988 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-20 06:07:57,988 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-20 06:07:57,990 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-20 06:07:58,017 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-11-20 06:07:58,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-11-20 06:07:58,193 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-20 06:08:14,802 WARN L227 SmtUtils]: Spent 16.61s on a formula simplification. DAG size of input: 438 DAG size of output: 435 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-11-20 06:08:29,471 WARN L227 SmtUtils]: Spent 14.66s on a formula simplification. DAG size of input: 462 DAG size of output: 459 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-11-20 06:11:45,965 WARN L227 SmtUtils]: Spent 3.27m on a formula simplification. DAG size of input: 435 DAG size of output: 142 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2021-11-20 06:16:32,845 WARN L227 SmtUtils]: Spent 4.78m on a formula simplification. DAG size of input: 459 DAG size of output: 184 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2021-11-20 06:16:47,831 WARN L227 SmtUtils]: Spent 14.98s on a formula simplification. DAG size of input: 221 DAG size of output: 142 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2021-11-20 06:16:47,834 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-20 06:16:47,834 INFO L858 garLoopResultBuilder]: For program point L31-2(line 31) no Hoare annotation was computed. [2021-11-20 06:16:47,835 INFO L854 garLoopResultBuilder]: At program point L31-3(line 31) the Hoare annotation is: (let ((.cse16 (select |#memory_int| |ULTIMATE.start_main_~x~0#1.base|)) (.cse17 (* |ULTIMATE.start_main_~i~1#1| 4))) (let ((.cse0 (= (select .cse16 (+ .cse17 |ULTIMATE.start_main_~x~0#1.offset|)) 0))) (let ((.cse7 (= (select .cse16 (+ 40 |ULTIMATE.start_main_~x~0#1.offset|)) 0)) (.cse9 (= (select .cse16 (+ 36 |ULTIMATE.start_main_~x~0#1.offset|)) 0)) (.cse11 (= (select .cse16 (+ 28 |ULTIMATE.start_main_~x~0#1.offset|)) 0)) (.cse12 (= (select .cse16 (+ |ULTIMATE.start_main_~x~0#1.offset| 24)) 0)) (.cse13 (= (select .cse16 (+ 32 |ULTIMATE.start_main_~x~0#1.offset|)) 0)) (.cse3 (= (select .cse16 (+ 8 |ULTIMATE.start_main_~x~0#1.offset|)) 0)) (.cse19 (= (select .cse16 (+ .cse17 |ULTIMATE.start_main_~x~0#1.offset| 4)) 0)) (.cse15 (or .cse0 (<= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~i~1#1|))) (.cse10 (= (select .cse16 (+ 16 |ULTIMATE.start_main_~x~0#1.offset|)) 0)) (.cse8 (= (select .cse16 (+ 12 |ULTIMATE.start_main_~x~0#1.offset|)) 0)) (.cse20 (<= |ULTIMATE.start_main_~n~0#1| 4)) (.cse21 (<= |ULTIMATE.start_main_~i~0#1| 4)) (.cse1 (= |ULTIMATE.start_main_~i~1#1| 0)) (.cse23 (<= |ULTIMATE.start_main_~n~0#1| 1)) (.cse24 (<= |ULTIMATE.start_main_~i~0#1| 1)) (.cse4 (exists ((|v_ULTIMATE.start_main_~i~0#1_23| Int)) (and (<= |ULTIMATE.start_main_~n~0#1| (+ |v_ULTIMATE.start_main_~i~0#1_23| 1)) (= (select (select |#memory_int| |ULTIMATE.start_main_~x~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_23| 4) |ULTIMATE.start_main_~x~0#1.offset|)) 0) (<= |v_ULTIMATE.start_main_~i~0#1_23| 2)))) (.cse25 (<= |ULTIMATE.start_main_~n~0#1| 2)) (.cse14 (= 0 (select .cse16 0))) (.cse26 (<= |ULTIMATE.start_main_~i~0#1| 2)) (.cse22 (= |ULTIMATE.start_main_~i~1#1| 1)) (.cse2 (= |ULTIMATE.start_main_~x~0#1.offset| 0)) (.cse18 (not (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0))) (.cse5 (= (select .cse16 (+ |ULTIMATE.start_main_~x~0#1.offset| 4)) 0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5) (and (exists ((|ULTIMATE.start_main_~i~0#1| Int) (|v_ULTIMATE.start_main_~i~0#1_79| Int)) (let ((.cse6 (select |#memory_int| |ULTIMATE.start_main_~x~0#1.base|))) (and (<= 5 |v_ULTIMATE.start_main_~i~0#1_79|) (= (select .cse6 (+ (* |v_ULTIMATE.start_main_~i~0#1_79| 4) |ULTIMATE.start_main_~x~0#1.offset|)) 0) (<= (+ |v_ULTIMATE.start_main_~i~0#1_79| 1) |ULTIMATE.start_main_~i~0#1|) (<= |v_ULTIMATE.start_main_~i~0#1_79| 5) (= (select .cse6 (+ (* |ULTIMATE.start_main_~i~0#1| 4) |ULTIMATE.start_main_~x~0#1.offset|)) 0)))) .cse0 .cse7 .cse1 .cse2 .cse3 .cse8 (forall ((|v_ULTIMATE.start_main_~i~1#1_296| Int)) (or (< |v_ULTIMATE.start_main_~i~1#1_296| (+ 3 |ULTIMATE.start_main_~i~1#1|)) (<= |ULTIMATE.start_main_~n~0#1| (+ 8 |v_ULTIMATE.start_main_~i~1#1_296|)) (= (select (select |#memory_int| |ULTIMATE.start_main_~x~0#1.base|) (+ 32 (* |v_ULTIMATE.start_main_~i~1#1_296| 4) |ULTIMATE.start_main_~x~0#1.offset|)) 0))) .cse9 .cse10 .cse11 .cse12 .cse13 .cse5) (and .cse14 .cse15 (= (select .cse16 (+ .cse17 28 |ULTIMATE.start_main_~x~0#1.offset|)) 0) .cse7 (= (select .cse16 (+ .cse17 12 |ULTIMATE.start_main_~x~0#1.offset|)) 0) (= (select .cse16 (+ .cse17 16 |ULTIMATE.start_main_~x~0#1.offset|)) 0) .cse2 .cse8 (= (select .cse16 (+ .cse17 8 |ULTIMATE.start_main_~x~0#1.offset|)) 0) .cse9 .cse18 .cse10 .cse11 .cse12 .cse13 (forall ((|v_ULTIMATE.start_main_~i~1#1_296| Int)) (or (<= |ULTIMATE.start_main_~n~0#1| (+ 8 |v_ULTIMATE.start_main_~i~1#1_296|)) (< |v_ULTIMATE.start_main_~i~1#1_296| (+ |ULTIMATE.start_main_~i~1#1| 1)) (= (select (select |#memory_int| |ULTIMATE.start_main_~x~0#1.base|) (+ 32 (* |v_ULTIMATE.start_main_~i~1#1_296| 4) |ULTIMATE.start_main_~x~0#1.offset|)) 0))) (= (select .cse16 (+ .cse17 |ULTIMATE.start_main_~x~0#1.offset| 24)) 0) .cse19 (= (select .cse16 (+ 32 .cse17 |ULTIMATE.start_main_~x~0#1.offset|)) 0) (= (select .cse16 (+ .cse17 20 |ULTIMATE.start_main_~x~0#1.offset|)) 0) .cse5) (and .cse0 .cse1 .cse2 .cse3 .cse8 .cse10 (forall ((|v_ULTIMATE.start_main_~i~1#1_59| Int)) (or (< |v_ULTIMATE.start_main_~i~1#1_59| (+ 5 |ULTIMATE.start_main_~i~1#1|)) (<= |ULTIMATE.start_main_~n~0#1| |v_ULTIMATE.start_main_~i~1#1_59|) (= (select (select |#memory_int| |ULTIMATE.start_main_~x~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~1#1_59| 4) |ULTIMATE.start_main_~x~0#1.offset|)) 0))) .cse5) (and .cse14 (= 3 |ULTIMATE.start_main_~i~1#1|) .cse2 .cse8 .cse20 .cse21 .cse18 .cse5) (and .cse0 .cse1 .cse2 .cse3 .cse8 .cse20 .cse21 .cse5) (and (<= 4 |ULTIMATE.start_main_~i~1#1|) .cse14 .cse2 .cse8 .cse20 .cse21 .cse18 .cse5) (and (= |ULTIMATE.start_main_~i~0#1| 0) .cse1 (<= |ULTIMATE.start_main_~n~0#1| 0)) (and .cse14 .cse22 .cse2 .cse18 .cse4 .cse19 .cse5) (and .cse14 .cse22 .cse2 .cse8 .cse20 .cse21 .cse18 .cse19 .cse5) (and .cse14 .cse15 .cse2 .cse8 .cse18 .cse10 (forall ((|v_ULTIMATE.start_main_~i~1#1_59| Int)) (or (< |v_ULTIMATE.start_main_~i~1#1_59| (+ |ULTIMATE.start_main_~i~1#1| 1)) (<= |ULTIMATE.start_main_~n~0#1| |v_ULTIMATE.start_main_~i~1#1_59|) (= (select (select |#memory_int| |ULTIMATE.start_main_~x~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~1#1_59| 4) |ULTIMATE.start_main_~x~0#1.offset|)) 0))) .cse5) (and .cse0 .cse1 .cse2 .cse23 .cse24) (and .cse14 .cse0 .cse2 .cse8 .cse20 .cse21 .cse18 (= 2 |ULTIMATE.start_main_~i~1#1|) .cse5) (and .cse25 .cse0 .cse1 .cse26 .cse2 .cse5) (and .cse14 .cse2 .cse18 (<= 1 |ULTIMATE.start_main_~i~1#1|) .cse23 .cse24) (and .cse14 (<= 2 |ULTIMATE.start_main_~i~1#1|) .cse2 .cse18 .cse4 .cse5) (and .cse25 .cse14 .cse26 .cse22 .cse2 .cse18 .cse5))))) [2021-11-20 06:16:47,835 INFO L858 garLoopResultBuilder]: For program point L31-4(line 31) no Hoare annotation was computed. [2021-11-20 06:16:47,835 INFO L858 garLoopResultBuilder]: For program point L19(lines 19 21) no Hoare annotation was computed. [2021-11-20 06:16:47,836 INFO L854 garLoopResultBuilder]: At program point L19-2(lines 18 23) the Hoare annotation is: (let ((.cse11 (* |ULTIMATE.start_main_~i~1#1| 4)) (.cse10 (select |#memory_int| |ULTIMATE.start_main_~x~0#1.base|))) (let ((.cse8 (= (select .cse10 (+ 8 |ULTIMATE.start_main_~x~0#1.offset|)) 0)) (.cse7 (= |ULTIMATE.start_main_~i~1#1| 0)) (.cse3 (<= |ULTIMATE.start_main_~n~0#1| 4)) (.cse4 (<= |ULTIMATE.start_main_~i~0#1| 4)) (.cse13 (= (select .cse10 (+ .cse11 |ULTIMATE.start_main_~x~0#1.offset| 4)) 0)) (.cse2 (= (select .cse10 (+ 12 |ULTIMATE.start_main_~x~0#1.offset|)) 0)) (.cse12 (= (select .cse10 (+ 16 |ULTIMATE.start_main_~x~0#1.offset|)) 0)) (.cse0 (= 0 (select .cse10 0))) (.cse1 (= |ULTIMATE.start_main_~x~0#1.offset| 0)) (.cse5 (not (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0))) (.cse9 (exists ((|v_ULTIMATE.start_main_~i~0#1_23| Int)) (and (<= |ULTIMATE.start_main_~n~0#1| (+ |v_ULTIMATE.start_main_~i~0#1_23| 1)) (= (select (select |#memory_int| |ULTIMATE.start_main_~x~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_23| 4) |ULTIMATE.start_main_~x~0#1.offset|)) 0) (<= |v_ULTIMATE.start_main_~i~0#1_23| 2)))) (.cse6 (= (select .cse10 (+ |ULTIMATE.start_main_~x~0#1.offset| 4)) 0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (<= 3 |ULTIMATE.start_main_~i~1#1|) .cse6) (and .cse0 .cse7 .cse1 .cse5 (<= |ULTIMATE.start_main_~n~0#1| 1) (<= |ULTIMATE.start_main_~i~0#1| 1)) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (= 2 |ULTIMATE.start_main_~i~1#1|) .cse6) (and .cse0 .cse7 .cse1 .cse8 .cse2 .cse3 .cse4 .cse5 .cse6) (and .cse0 .cse7 .cse1 .cse8 .cse5 .cse9 .cse6) (and .cse0 (= (select .cse10 (+ .cse11 28 |ULTIMATE.start_main_~x~0#1.offset|)) 0) (= (select .cse10 (+ 40 |ULTIMATE.start_main_~x~0#1.offset|)) 0) (= (select .cse10 (+ .cse11 12 |ULTIMATE.start_main_~x~0#1.offset|)) 0) (= (select .cse10 (+ .cse11 16 |ULTIMATE.start_main_~x~0#1.offset|)) 0) .cse1 .cse2 (= (select .cse10 (+ .cse11 8 |ULTIMATE.start_main_~x~0#1.offset|)) 0) (= (select .cse10 (+ 36 |ULTIMATE.start_main_~x~0#1.offset|)) 0) .cse5 .cse12 (= (select .cse10 (+ 28 |ULTIMATE.start_main_~x~0#1.offset|)) 0) (= (select .cse10 (+ |ULTIMATE.start_main_~x~0#1.offset| 24)) 0) (= (select .cse10 (+ 32 |ULTIMATE.start_main_~x~0#1.offset|)) 0) (forall ((|v_ULTIMATE.start_main_~i~1#1_296| Int)) (or (<= |ULTIMATE.start_main_~n~0#1| (+ 8 |v_ULTIMATE.start_main_~i~1#1_296|)) (< |v_ULTIMATE.start_main_~i~1#1_296| (+ |ULTIMATE.start_main_~i~1#1| 1)) (= (select (select |#memory_int| |ULTIMATE.start_main_~x~0#1.base|) (+ 32 (* |v_ULTIMATE.start_main_~i~1#1_296| 4) |ULTIMATE.start_main_~x~0#1.offset|)) 0))) (= (select .cse10 (+ .cse11 |ULTIMATE.start_main_~x~0#1.offset| 24)) 0) .cse13 (= (select .cse10 (+ 32 .cse11 |ULTIMATE.start_main_~x~0#1.offset|)) 0) (= (select .cse10 (+ .cse11 20 |ULTIMATE.start_main_~x~0#1.offset|)) 0) .cse6) (and (<= |ULTIMATE.start_main_~n~0#1| 2) .cse0 .cse7 (<= |ULTIMATE.start_main_~i~0#1| 2) .cse1 .cse5 .cse6) (and .cse0 (= |ULTIMATE.start_main_~i~1#1| 1) .cse1 .cse2 .cse3 .cse4 .cse5 .cse13 .cse6) (and .cse0 .cse1 .cse2 .cse5 .cse12 (forall ((|v_ULTIMATE.start_main_~i~1#1_59| Int)) (or (< |v_ULTIMATE.start_main_~i~1#1_59| (+ |ULTIMATE.start_main_~i~1#1| 1)) (<= |ULTIMATE.start_main_~n~0#1| |v_ULTIMATE.start_main_~i~1#1_59|) (= (select (select |#memory_int| |ULTIMATE.start_main_~x~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~1#1_59| 4) |ULTIMATE.start_main_~x~0#1.offset|)) 0))) .cse6) (and .cse0 .cse1 .cse5 (<= 1 |ULTIMATE.start_main_~i~1#1|) .cse9 .cse6)))) [2021-11-20 06:16:47,836 INFO L861 garLoopResultBuilder]: At program point L32(lines 26 33) the Hoare annotation is: true [2021-11-20 06:16:47,836 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-20 06:16:47,836 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-20 06:16:47,836 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-20 06:16:47,837 INFO L858 garLoopResultBuilder]: For program point L28(line 28) no Hoare annotation was computed. [2021-11-20 06:16:47,837 INFO L858 garLoopResultBuilder]: For program point L30-2(line 30) no Hoare annotation was computed. [2021-11-20 06:16:47,837 INFO L854 garLoopResultBuilder]: At program point L30-3(line 30) the Hoare annotation is: (let ((.cse8 (select |#memory_int| |ULTIMATE.start_main_~x~0#1.base|))) (let ((.cse0 (= 0 (select .cse8 0))) (.cse1 (= |ULTIMATE.start_main_~x~0#1.offset| 0)) (.cse3 (= (select .cse8 (+ 8 |ULTIMATE.start_main_~x~0#1.offset|)) 0)) (.cse4 (= (select .cse8 (+ 12 |ULTIMATE.start_main_~x~0#1.offset|)) 0)) (.cse5 (= (select .cse8 (+ 16 |ULTIMATE.start_main_~x~0#1.offset|)) 0)) (.cse2 (= (select .cse8 (+ |ULTIMATE.start_main_~x~0#1.offset| 4)) 0))) (or (and .cse0 .cse1 (<= 2 |ULTIMATE.start_main_~i~0#1|) (exists ((|v_ULTIMATE.start_main_~i~0#1_23| Int)) (and (= (select (select |#memory_int| |ULTIMATE.start_main_~x~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_23| 4) |ULTIMATE.start_main_~x~0#1.offset|)) 0) (<= |v_ULTIMATE.start_main_~i~0#1_23| 2) (<= |ULTIMATE.start_main_~i~0#1| (+ |v_ULTIMATE.start_main_~i~0#1_23| 1)))) .cse2) (and .cse0 .cse1 .cse3 .cse4 .cse5 (forall ((|v_ULTIMATE.start_main_~i~1#1_59| Int)) (or (< |v_ULTIMATE.start_main_~i~1#1_59| 5) (= (select (select |#memory_int| |ULTIMATE.start_main_~x~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~1#1_59| 4) |ULTIMATE.start_main_~x~0#1.offset|)) 0) (<= |ULTIMATE.start_main_~i~0#1| |v_ULTIMATE.start_main_~i~1#1_59|))) (exists ((|v_ULTIMATE.start_main_~i~0#1_312| Int)) (let ((.cse6 (select |#memory_int| |ULTIMATE.start_main_~x~0#1.base|)) (.cse7 (* |v_ULTIMATE.start_main_~i~0#1_312| 4))) (and (= (select .cse6 (+ .cse7 |ULTIMATE.start_main_~x~0#1.offset|)) 0) (<= |v_ULTIMATE.start_main_~i~0#1_312| 12) (= (select .cse6 (+ .cse7 (- 4) |ULTIMATE.start_main_~x~0#1.offset|)) 0) (<= |ULTIMATE.start_main_~i~0#1| (+ |v_ULTIMATE.start_main_~i~0#1_312| 1))))) (<= 6 |ULTIMATE.start_main_~i~0#1|) .cse2) (and .cse0 .cse1 .cse3 .cse4 (<= 4 |ULTIMATE.start_main_~i~0#1|) (exists ((|v_ULTIMATE.start_main_~i~0#1_67| Int)) (and (= (select (select |#memory_int| |ULTIMATE.start_main_~x~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_67| 4) |ULTIMATE.start_main_~x~0#1.offset|)) 0) (<= |v_ULTIMATE.start_main_~i~0#1_67| 4) (<= |ULTIMATE.start_main_~i~0#1| (+ |v_ULTIMATE.start_main_~i~0#1_67| 1)))) .cse2) (and .cse1 (= (+ (* 4 |ULTIMATE.start_main_~i~0#1|) |ULTIMATE.start_main_~x~0#1.offset|) 0)) (and (<= 1 |ULTIMATE.start_main_~i~0#1|) (= (select .cse8 (+ (- 4) (* |ULTIMATE.start_main_~i~0#1| 4) |ULTIMATE.start_main_~x~0#1.offset|)) 0) .cse1 (<= |ULTIMATE.start_main_~i~0#1| 1)) (and (exists ((|ULTIMATE.start_main_~i~0#1| Int) (|v_ULTIMATE.start_main_~i~0#1_79| Int)) (let ((.cse9 (select |#memory_int| |ULTIMATE.start_main_~x~0#1.base|))) (and (<= 5 |v_ULTIMATE.start_main_~i~0#1_79|) (= (select .cse9 (+ (* |v_ULTIMATE.start_main_~i~0#1_79| 4) |ULTIMATE.start_main_~x~0#1.offset|)) 0) (<= (+ |v_ULTIMATE.start_main_~i~0#1_79| 1) |ULTIMATE.start_main_~i~0#1|) (<= |v_ULTIMATE.start_main_~i~0#1_79| 5) (= (select .cse9 (+ (* |ULTIMATE.start_main_~i~0#1| 4) |ULTIMATE.start_main_~x~0#1.offset|)) 0)))) .cse0 (= (select .cse8 (+ 40 |ULTIMATE.start_main_~x~0#1.offset|)) 0) (= (select .cse8 (+ 44 |ULTIMATE.start_main_~x~0#1.offset|)) 0) (forall ((|v_ULTIMATE.start_main_~i~1#1_296| Int)) (or (<= |ULTIMATE.start_main_~i~0#1| (+ 8 |v_ULTIMATE.start_main_~i~1#1_296|)) (< |v_ULTIMATE.start_main_~i~1#1_296| 3) (= (select (select |#memory_int| |ULTIMATE.start_main_~x~0#1.base|) (+ 32 (* |v_ULTIMATE.start_main_~i~1#1_296| 4) |ULTIMATE.start_main_~x~0#1.offset|)) 0))) .cse1 .cse3 .cse4 (= (select .cse8 (+ 36 |ULTIMATE.start_main_~x~0#1.offset|)) 0) .cse5 (= (select .cse8 (+ 28 |ULTIMATE.start_main_~x~0#1.offset|)) 0) (= (select .cse8 (+ |ULTIMATE.start_main_~x~0#1.offset| 24)) 0) (= (select .cse8 (+ 32 |ULTIMATE.start_main_~x~0#1.offset|)) 0) .cse2)))) [2021-11-20 06:16:47,837 INFO L858 garLoopResultBuilder]: For program point L30-4(line 30) no Hoare annotation was computed. [2021-11-20 06:16:47,838 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 20) no Hoare annotation was computed. [2021-11-20 06:16:47,838 INFO L858 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2021-11-20 06:16:47,841 INFO L732 BasicCegarLoop]: Path program histogram: [22, 1, 1, 1] [2021-11-20 06:16:47,843 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 06:16:47,854 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] [2021-11-20 06:16:47,855 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] [2021-11-20 06:16:47,855 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] [2021-11-20 06:16:47,871 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_296,QUANTIFIED] [2021-11-20 06:16:47,871 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_296,QUANTIFIED] [2021-11-20 06:16:47,872 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_296,QUANTIFIED] [2021-11-20 06:16:47,873 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_59,QUANTIFIED] [2021-11-20 06:16:47,873 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_59,QUANTIFIED] [2021-11-20 06:16:47,873 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_59,QUANTIFIED] [2021-11-20 06:16:47,873 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] [2021-11-20 06:16:47,874 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] [2021-11-20 06:16:47,874 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] [2021-11-20 06:16:47,892 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] [2021-11-20 06:16:47,892 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] [2021-11-20 06:16:47,893 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] [2021-11-20 06:16:47,893 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_296,QUANTIFIED] [2021-11-20 06:16:47,894 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_296,QUANTIFIED] [2021-11-20 06:16:47,894 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_296,QUANTIFIED] [2021-11-20 06:16:47,895 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_59,QUANTIFIED] [2021-11-20 06:16:47,895 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_59,QUANTIFIED] [2021-11-20 06:16:47,895 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_59,QUANTIFIED] [2021-11-20 06:16:47,895 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] [2021-11-20 06:16:47,895 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] [2021-11-20 06:16:47,896 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] [2021-11-20 06:16:47,906 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] [2021-11-20 06:16:47,906 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] [2021-11-20 06:16:47,906 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] [2021-11-20 06:16:47,907 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_59,QUANTIFIED] [2021-11-20 06:16:47,907 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_59,QUANTIFIED] [2021-11-20 06:16:47,907 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_59,QUANTIFIED] [2021-11-20 06:16:47,908 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_312,QUANTIFIED] [2021-11-20 06:16:47,908 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_312,QUANTIFIED] [2021-11-20 06:16:47,908 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_312,QUANTIFIED] [2021-11-20 06:16:47,908 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_312,QUANTIFIED] [2021-11-20 06:16:47,909 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_67,QUANTIFIED] [2021-11-20 06:16:47,909 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_67,QUANTIFIED] [2021-11-20 06:16:47,909 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_67,QUANTIFIED] [2021-11-20 06:16:47,909 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_79,QUANTIFIED] [2021-11-20 06:16:47,910 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_79,QUANTIFIED] [2021-11-20 06:16:47,910 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_79,QUANTIFIED] [2021-11-20 06:16:47,910 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0#1,QUANTIFIED] [2021-11-20 06:16:47,910 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_79,QUANTIFIED] [2021-11-20 06:16:47,911 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0#1,QUANTIFIED] [2021-11-20 06:16:47,911 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_296,QUANTIFIED] [2021-11-20 06:16:47,911 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_296,QUANTIFIED] [2021-11-20 06:16:47,911 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_296,QUANTIFIED] [2021-11-20 06:16:47,914 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] [2021-11-20 06:16:47,914 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] [2021-11-20 06:16:47,914 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] [2021-11-20 06:16:47,915 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_59,QUANTIFIED] [2021-11-20 06:16:47,915 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_59,QUANTIFIED] [2021-11-20 06:16:47,915 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_59,QUANTIFIED] [2021-11-20 06:16:47,915 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_312,QUANTIFIED] [2021-11-20 06:16:47,915 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_312,QUANTIFIED] [2021-11-20 06:16:47,916 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_312,QUANTIFIED] [2021-11-20 06:16:47,916 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_312,QUANTIFIED] [2021-11-20 06:16:47,916 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_67,QUANTIFIED] [2021-11-20 06:16:47,916 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_67,QUANTIFIED] [2021-11-20 06:16:47,916 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_67,QUANTIFIED] [2021-11-20 06:16:47,917 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_79,QUANTIFIED] [2021-11-20 06:16:47,917 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_79,QUANTIFIED] [2021-11-20 06:16:47,917 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_79,QUANTIFIED] [2021-11-20 06:16:47,917 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0#1,QUANTIFIED] [2021-11-20 06:16:47,917 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_79,QUANTIFIED] [2021-11-20 06:16:47,917 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0#1,QUANTIFIED] [2021-11-20 06:16:47,918 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_296,QUANTIFIED] [2021-11-20 06:16:47,918 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_296,QUANTIFIED] [2021-11-20 06:16:47,919 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_296,QUANTIFIED] [2021-11-20 06:16:47,922 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] [2021-11-20 06:16:47,926 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] [2021-11-20 06:16:47,927 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] [2021-11-20 06:16:47,927 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_79,QUANTIFIED] [2021-11-20 06:16:47,927 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_79,QUANTIFIED] [2021-11-20 06:16:47,928 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_79,QUANTIFIED] [2021-11-20 06:16:47,928 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0#1,QUANTIFIED] [2021-11-20 06:16:47,928 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_79,QUANTIFIED] [2021-11-20 06:16:47,929 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0#1,QUANTIFIED] [2021-11-20 06:16:47,929 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_296,QUANTIFIED] [2021-11-20 06:16:47,929 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_296,QUANTIFIED] [2021-11-20 06:16:47,930 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_296,QUANTIFIED] [2021-11-20 06:16:47,930 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_296,QUANTIFIED] [2021-11-20 06:16:47,934 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_296,QUANTIFIED] [2021-11-20 06:16:47,934 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_296,QUANTIFIED] [2021-11-20 06:16:47,935 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_59,QUANTIFIED] [2021-11-20 06:16:47,935 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_59,QUANTIFIED] [2021-11-20 06:16:47,935 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_59,QUANTIFIED] [2021-11-20 06:16:47,936 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] [2021-11-20 06:16:47,936 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] [2021-11-20 06:16:47,936 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] [2021-11-20 06:16:47,936 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_59,QUANTIFIED] [2021-11-20 06:16:47,936 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_59,QUANTIFIED] [2021-11-20 06:16:47,936 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_59,QUANTIFIED] [2021-11-20 06:16:47,936 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] [2021-11-20 06:16:47,936 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] [2021-11-20 06:16:47,937 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] [2021-11-20 06:16:47,939 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] [2021-11-20 06:16:47,940 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] [2021-11-20 06:16:47,940 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] [2021-11-20 06:16:47,940 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_79,QUANTIFIED] [2021-11-20 06:16:47,940 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_79,QUANTIFIED] [2021-11-20 06:16:47,940 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_79,QUANTIFIED] [2021-11-20 06:16:47,941 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0#1,QUANTIFIED] [2021-11-20 06:16:47,941 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_79,QUANTIFIED] [2021-11-20 06:16:47,941 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0#1,QUANTIFIED] [2021-11-20 06:16:47,941 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_296,QUANTIFIED] [2021-11-20 06:16:47,941 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_296,QUANTIFIED] [2021-11-20 06:16:47,941 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_296,QUANTIFIED] [2021-11-20 06:16:47,942 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_296,QUANTIFIED] [2021-11-20 06:16:47,942 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_296,QUANTIFIED] [2021-11-20 06:16:47,942 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_296,QUANTIFIED] [2021-11-20 06:16:47,942 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_59,QUANTIFIED] [2021-11-20 06:16:47,943 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_59,QUANTIFIED] [2021-11-20 06:16:47,943 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_59,QUANTIFIED] [2021-11-20 06:16:47,943 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] [2021-11-20 06:16:47,943 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] [2021-11-20 06:16:47,943 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] [2021-11-20 06:16:47,943 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_59,QUANTIFIED] [2021-11-20 06:16:47,943 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_59,QUANTIFIED] [2021-11-20 06:16:47,943 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_59,QUANTIFIED] [2021-11-20 06:16:47,944 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] [2021-11-20 06:16:47,944 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] [2021-11-20 06:16:47,944 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] [2021-11-20 06:16:47,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 06:16:47 BoogieIcfgContainer [2021-11-20 06:16:47,947 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 06:16:47,948 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 06:16:47,948 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 06:16:47,948 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 06:16:47,949 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:06:58" (3/4) ... [2021-11-20 06:16:47,955 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-20 06:16:47,966 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-11-20 06:16:47,966 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-11-20 06:16:47,967 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-20 06:16:47,967 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-20 06:16:47,985 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((0 == unknown-#memory_int-unknown[x][0] && x == 0) && 2 <= i) && (\exists v_ULTIMATE.start_main_~i~0#1_23 : int :: (unknown-#memory_int-unknown[x][v_ULTIMATE.start_main_~i~0#1_23 * 4 + x] == 0 && v_ULTIMATE.start_main_~i~0#1_23 <= 2) && i <= v_ULTIMATE.start_main_~i~0#1_23 + 1)) && unknown-#memory_int-unknown[x][x + 4] == 0) || ((((((((0 == unknown-#memory_int-unknown[x][0] && x == 0) && unknown-#memory_int-unknown[x][8 + x] == 0) && unknown-#memory_int-unknown[x][12 + x] == 0) && unknown-#memory_int-unknown[x][16 + x] == 0) && (forall v_ULTIMATE.start_main_~i~1#1_59 : int :: (v_ULTIMATE.start_main_~i~1#1_59 < 5 || unknown-#memory_int-unknown[x][v_ULTIMATE.start_main_~i~1#1_59 * 4 + x] == 0) || i <= v_ULTIMATE.start_main_~i~1#1_59)) && (\exists v_ULTIMATE.start_main_~i~0#1_312 : int :: ((unknown-#memory_int-unknown[x][v_ULTIMATE.start_main_~i~0#1_312 * 4 + x] == 0 && v_ULTIMATE.start_main_~i~0#1_312 <= 12) && unknown-#memory_int-unknown[x][v_ULTIMATE.start_main_~i~0#1_312 * 4 + -4 + x] == 0) && i <= v_ULTIMATE.start_main_~i~0#1_312 + 1)) && 6 <= i) && unknown-#memory_int-unknown[x][x + 4] == 0)) || ((((((0 == unknown-#memory_int-unknown[x][0] && x == 0) && unknown-#memory_int-unknown[x][8 + x] == 0) && unknown-#memory_int-unknown[x][12 + x] == 0) && 4 <= i) && (\exists v_ULTIMATE.start_main_~i~0#1_67 : int :: (unknown-#memory_int-unknown[x][v_ULTIMATE.start_main_~i~0#1_67 * 4 + x] == 0 && v_ULTIMATE.start_main_~i~0#1_67 <= 4) && i <= v_ULTIMATE.start_main_~i~0#1_67 + 1)) && unknown-#memory_int-unknown[x][x + 4] == 0)) || (x == 0 && 4 * i + x == 0)) || (((1 <= i && unknown-#memory_int-unknown[x][-4 + i * 4 + x] == 0) && x == 0) && i <= 1)) || ((((((((((((((\exists ULTIMATE.start_main_~i~0#1 : int, v_ULTIMATE.start_main_~i~0#1_79 : int :: (((5 <= v_ULTIMATE.start_main_~i~0#1_79 && unknown-#memory_int-unknown[x][v_ULTIMATE.start_main_~i~0#1_79 * 4 + x] == 0) && v_ULTIMATE.start_main_~i~0#1_79 + 1 <= ULTIMATE.start_main_~i~0#1) && v_ULTIMATE.start_main_~i~0#1_79 <= 5) && unknown-#memory_int-unknown[x][ULTIMATE.start_main_~i~0#1 * 4 + x] == 0) && 0 == unknown-#memory_int-unknown[x][0]) && unknown-#memory_int-unknown[x][40 + x] == 0) && unknown-#memory_int-unknown[x][44 + x] == 0) && (forall v_ULTIMATE.start_main_~i~1#1_296 : int :: (i <= 8 + v_ULTIMATE.start_main_~i~1#1_296 || v_ULTIMATE.start_main_~i~1#1_296 < 3) || unknown-#memory_int-unknown[x][32 + v_ULTIMATE.start_main_~i~1#1_296 * 4 + x] == 0)) && x == 0) && unknown-#memory_int-unknown[x][8 + x] == 0) && unknown-#memory_int-unknown[x][12 + x] == 0) && unknown-#memory_int-unknown[x][36 + x] == 0) && unknown-#memory_int-unknown[x][16 + x] == 0) && unknown-#memory_int-unknown[x][28 + x] == 0) && unknown-#memory_int-unknown[x][x + 24] == 0) && unknown-#memory_int-unknown[x][32 + x] == 0) && unknown-#memory_int-unknown[x][x + 4] == 0) [2021-11-20 06:16:47,985 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((((((((((((unknown-#memory_int-unknown[x][i * 4 + x] == 0 && i == 0) && x == 0) && unknown-#memory_int-unknown[x][8 + x] == 0) && (\exists v_ULTIMATE.start_main_~i~0#1_23 : int :: (n <= v_ULTIMATE.start_main_~i~0#1_23 + 1 && unknown-#memory_int-unknown[x][v_ULTIMATE.start_main_~i~0#1_23 * 4 + x] == 0) && v_ULTIMATE.start_main_~i~0#1_23 <= 2)) && unknown-#memory_int-unknown[x][x + 4] == 0) || ((((((((((((((\exists ULTIMATE.start_main_~i~0#1 : int, v_ULTIMATE.start_main_~i~0#1_79 : int :: (((5 <= v_ULTIMATE.start_main_~i~0#1_79 && unknown-#memory_int-unknown[x][v_ULTIMATE.start_main_~i~0#1_79 * 4 + x] == 0) && v_ULTIMATE.start_main_~i~0#1_79 + 1 <= ULTIMATE.start_main_~i~0#1) && v_ULTIMATE.start_main_~i~0#1_79 <= 5) && unknown-#memory_int-unknown[x][ULTIMATE.start_main_~i~0#1 * 4 + x] == 0) && unknown-#memory_int-unknown[x][i * 4 + x] == 0) && unknown-#memory_int-unknown[x][40 + x] == 0) && i == 0) && x == 0) && unknown-#memory_int-unknown[x][8 + x] == 0) && unknown-#memory_int-unknown[x][12 + x] == 0) && (forall v_ULTIMATE.start_main_~i~1#1_296 : int :: (v_ULTIMATE.start_main_~i~1#1_296 < 3 + i || n <= 8 + v_ULTIMATE.start_main_~i~1#1_296) || unknown-#memory_int-unknown[x][32 + v_ULTIMATE.start_main_~i~1#1_296 * 4 + x] == 0)) && unknown-#memory_int-unknown[x][36 + x] == 0) && unknown-#memory_int-unknown[x][16 + x] == 0) && unknown-#memory_int-unknown[x][28 + x] == 0) && unknown-#memory_int-unknown[x][x + 24] == 0) && unknown-#memory_int-unknown[x][32 + x] == 0) && unknown-#memory_int-unknown[x][x + 4] == 0)) || ((((((((((((((((((((0 == unknown-#memory_int-unknown[x][0] && (unknown-#memory_int-unknown[x][i * 4 + x] == 0 || n <= i)) && unknown-#memory_int-unknown[x][i * 4 + 28 + x] == 0) && unknown-#memory_int-unknown[x][40 + x] == 0) && unknown-#memory_int-unknown[x][i * 4 + 12 + x] == 0) && unknown-#memory_int-unknown[x][i * 4 + 16 + x] == 0) && x == 0) && unknown-#memory_int-unknown[x][12 + x] == 0) && unknown-#memory_int-unknown[x][i * 4 + 8 + x] == 0) && unknown-#memory_int-unknown[x][36 + x] == 0) && !(cond == 0)) && unknown-#memory_int-unknown[x][16 + x] == 0) && unknown-#memory_int-unknown[x][28 + x] == 0) && unknown-#memory_int-unknown[x][x + 24] == 0) && unknown-#memory_int-unknown[x][32 + x] == 0) && (forall v_ULTIMATE.start_main_~i~1#1_296 : int :: (n <= 8 + v_ULTIMATE.start_main_~i~1#1_296 || v_ULTIMATE.start_main_~i~1#1_296 < i + 1) || unknown-#memory_int-unknown[x][32 + v_ULTIMATE.start_main_~i~1#1_296 * 4 + x] == 0)) && unknown-#memory_int-unknown[x][i * 4 + x + 24] == 0) && unknown-#memory_int-unknown[x][i * 4 + x + 4] == 0) && unknown-#memory_int-unknown[x][32 + i * 4 + x] == 0) && unknown-#memory_int-unknown[x][i * 4 + 20 + x] == 0) && unknown-#memory_int-unknown[x][x + 4] == 0)) || (((((((unknown-#memory_int-unknown[x][i * 4 + x] == 0 && i == 0) && x == 0) && unknown-#memory_int-unknown[x][8 + x] == 0) && unknown-#memory_int-unknown[x][12 + x] == 0) && unknown-#memory_int-unknown[x][16 + x] == 0) && (forall v_ULTIMATE.start_main_~i~1#1_59 : int :: (v_ULTIMATE.start_main_~i~1#1_59 < 5 + i || n <= v_ULTIMATE.start_main_~i~1#1_59) || unknown-#memory_int-unknown[x][v_ULTIMATE.start_main_~i~1#1_59 * 4 + x] == 0)) && unknown-#memory_int-unknown[x][x + 4] == 0)) || (((((((0 == unknown-#memory_int-unknown[x][0] && 3 == i) && x == 0) && unknown-#memory_int-unknown[x][12 + x] == 0) && n <= 4) && i <= 4) && !(cond == 0)) && unknown-#memory_int-unknown[x][x + 4] == 0)) || (((((((unknown-#memory_int-unknown[x][i * 4 + x] == 0 && i == 0) && x == 0) && unknown-#memory_int-unknown[x][8 + x] == 0) && unknown-#memory_int-unknown[x][12 + x] == 0) && n <= 4) && i <= 4) && unknown-#memory_int-unknown[x][x + 4] == 0)) || (((((((4 <= i && 0 == unknown-#memory_int-unknown[x][0]) && x == 0) && unknown-#memory_int-unknown[x][12 + x] == 0) && n <= 4) && i <= 4) && !(cond == 0)) && unknown-#memory_int-unknown[x][x + 4] == 0)) || ((i == 0 && i == 0) && n <= 0)) || ((((((0 == unknown-#memory_int-unknown[x][0] && i == 1) && x == 0) && !(cond == 0)) && (\exists v_ULTIMATE.start_main_~i~0#1_23 : int :: (n <= v_ULTIMATE.start_main_~i~0#1_23 + 1 && unknown-#memory_int-unknown[x][v_ULTIMATE.start_main_~i~0#1_23 * 4 + x] == 0) && v_ULTIMATE.start_main_~i~0#1_23 <= 2)) && unknown-#memory_int-unknown[x][i * 4 + x + 4] == 0) && unknown-#memory_int-unknown[x][x + 4] == 0)) || ((((((((0 == unknown-#memory_int-unknown[x][0] && i == 1) && x == 0) && unknown-#memory_int-unknown[x][12 + x] == 0) && n <= 4) && i <= 4) && !(cond == 0)) && unknown-#memory_int-unknown[x][i * 4 + x + 4] == 0) && unknown-#memory_int-unknown[x][x + 4] == 0)) || (((((((0 == unknown-#memory_int-unknown[x][0] && (unknown-#memory_int-unknown[x][i * 4 + x] == 0 || n <= i)) && x == 0) && unknown-#memory_int-unknown[x][12 + x] == 0) && !(cond == 0)) && unknown-#memory_int-unknown[x][16 + x] == 0) && (forall v_ULTIMATE.start_main_~i~1#1_59 : int :: (v_ULTIMATE.start_main_~i~1#1_59 < i + 1 || n <= v_ULTIMATE.start_main_~i~1#1_59) || unknown-#memory_int-unknown[x][v_ULTIMATE.start_main_~i~1#1_59 * 4 + x] == 0)) && unknown-#memory_int-unknown[x][x + 4] == 0)) || ((((unknown-#memory_int-unknown[x][i * 4 + x] == 0 && i == 0) && x == 0) && n <= 1) && i <= 1)) || ((((((((0 == unknown-#memory_int-unknown[x][0] && unknown-#memory_int-unknown[x][i * 4 + x] == 0) && x == 0) && unknown-#memory_int-unknown[x][12 + x] == 0) && n <= 4) && i <= 4) && !(cond == 0)) && 2 == i) && unknown-#memory_int-unknown[x][x + 4] == 0)) || (((((n <= 2 && unknown-#memory_int-unknown[x][i * 4 + x] == 0) && i == 0) && i <= 2) && x == 0) && unknown-#memory_int-unknown[x][x + 4] == 0)) || (((((0 == unknown-#memory_int-unknown[x][0] && x == 0) && !(cond == 0)) && 1 <= i) && n <= 1) && i <= 1)) || (((((0 == unknown-#memory_int-unknown[x][0] && 2 <= i) && x == 0) && !(cond == 0)) && (\exists v_ULTIMATE.start_main_~i~0#1_23 : int :: (n <= v_ULTIMATE.start_main_~i~0#1_23 + 1 && unknown-#memory_int-unknown[x][v_ULTIMATE.start_main_~i~0#1_23 * 4 + x] == 0) && v_ULTIMATE.start_main_~i~0#1_23 <= 2)) && unknown-#memory_int-unknown[x][x + 4] == 0)) || ((((((n <= 2 && 0 == unknown-#memory_int-unknown[x][0]) && i <= 2) && i == 1) && x == 0) && !(cond == 0)) && unknown-#memory_int-unknown[x][x + 4] == 0) [2021-11-20 06:16:47,986 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((((((((0 == unknown-#memory_int-unknown[x][0] && x == 0) && unknown-#memory_int-unknown[x][12 + x] == 0) && n <= 4) && i <= 4) && !(cond == 0)) && 3 <= i) && unknown-#memory_int-unknown[x][x + 4] == 0) || (((((0 == unknown-#memory_int-unknown[x][0] && i == 0) && x == 0) && !(cond == 0)) && n <= 1) && i <= 1)) || (((((((0 == unknown-#memory_int-unknown[x][0] && x == 0) && unknown-#memory_int-unknown[x][12 + x] == 0) && n <= 4) && i <= 4) && !(cond == 0)) && 2 == i) && unknown-#memory_int-unknown[x][x + 4] == 0)) || ((((((((0 == unknown-#memory_int-unknown[x][0] && i == 0) && x == 0) && unknown-#memory_int-unknown[x][8 + x] == 0) && unknown-#memory_int-unknown[x][12 + x] == 0) && n <= 4) && i <= 4) && !(cond == 0)) && unknown-#memory_int-unknown[x][x + 4] == 0)) || ((((((0 == unknown-#memory_int-unknown[x][0] && i == 0) && x == 0) && unknown-#memory_int-unknown[x][8 + x] == 0) && !(cond == 0)) && (\exists v_ULTIMATE.start_main_~i~0#1_23 : int :: (n <= v_ULTIMATE.start_main_~i~0#1_23 + 1 && unknown-#memory_int-unknown[x][v_ULTIMATE.start_main_~i~0#1_23 * 4 + x] == 0) && v_ULTIMATE.start_main_~i~0#1_23 <= 2)) && unknown-#memory_int-unknown[x][x + 4] == 0)) || (((((((((((((((((((0 == unknown-#memory_int-unknown[x][0] && unknown-#memory_int-unknown[x][i * 4 + 28 + x] == 0) && unknown-#memory_int-unknown[x][40 + x] == 0) && unknown-#memory_int-unknown[x][i * 4 + 12 + x] == 0) && unknown-#memory_int-unknown[x][i * 4 + 16 + x] == 0) && x == 0) && unknown-#memory_int-unknown[x][12 + x] == 0) && unknown-#memory_int-unknown[x][i * 4 + 8 + x] == 0) && unknown-#memory_int-unknown[x][36 + x] == 0) && !(cond == 0)) && unknown-#memory_int-unknown[x][16 + x] == 0) && unknown-#memory_int-unknown[x][28 + x] == 0) && unknown-#memory_int-unknown[x][x + 24] == 0) && unknown-#memory_int-unknown[x][32 + x] == 0) && (forall v_ULTIMATE.start_main_~i~1#1_296 : int :: (n <= 8 + v_ULTIMATE.start_main_~i~1#1_296 || v_ULTIMATE.start_main_~i~1#1_296 < i + 1) || unknown-#memory_int-unknown[x][32 + v_ULTIMATE.start_main_~i~1#1_296 * 4 + x] == 0)) && unknown-#memory_int-unknown[x][i * 4 + x + 24] == 0) && unknown-#memory_int-unknown[x][i * 4 + x + 4] == 0) && unknown-#memory_int-unknown[x][32 + i * 4 + x] == 0) && unknown-#memory_int-unknown[x][i * 4 + 20 + x] == 0) && unknown-#memory_int-unknown[x][x + 4] == 0)) || ((((((n <= 2 && 0 == unknown-#memory_int-unknown[x][0]) && i == 0) && i <= 2) && x == 0) && !(cond == 0)) && unknown-#memory_int-unknown[x][x + 4] == 0)) || ((((((((0 == unknown-#memory_int-unknown[x][0] && i == 1) && x == 0) && unknown-#memory_int-unknown[x][12 + x] == 0) && n <= 4) && i <= 4) && !(cond == 0)) && unknown-#memory_int-unknown[x][i * 4 + x + 4] == 0) && unknown-#memory_int-unknown[x][x + 4] == 0)) || ((((((0 == unknown-#memory_int-unknown[x][0] && x == 0) && unknown-#memory_int-unknown[x][12 + x] == 0) && !(cond == 0)) && unknown-#memory_int-unknown[x][16 + x] == 0) && (forall v_ULTIMATE.start_main_~i~1#1_59 : int :: (v_ULTIMATE.start_main_~i~1#1_59 < i + 1 || n <= v_ULTIMATE.start_main_~i~1#1_59) || unknown-#memory_int-unknown[x][v_ULTIMATE.start_main_~i~1#1_59 * 4 + x] == 0)) && unknown-#memory_int-unknown[x][x + 4] == 0)) || (((((0 == unknown-#memory_int-unknown[x][0] && x == 0) && !(cond == 0)) && 1 <= i) && (\exists v_ULTIMATE.start_main_~i~0#1_23 : int :: (n <= v_ULTIMATE.start_main_~i~0#1_23 + 1 && unknown-#memory_int-unknown[x][v_ULTIMATE.start_main_~i~0#1_23 * 4 + x] == 0) && v_ULTIMATE.start_main_~i~0#1_23 <= 2)) && unknown-#memory_int-unknown[x][x + 4] == 0) [2021-11-20 06:16:47,992 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/witness.graphml [2021-11-20 06:16:47,993 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 06:16:47,993 INFO L158 Benchmark]: Toolchain (without parser) took 590180.56ms. Allocated memory was 113.2MB in the beginning and 257.9MB in the end (delta: 144.7MB). Free memory was 86.8MB in the beginning and 216.5MB in the end (delta: -129.7MB). Peak memory consumption was 17.7MB. Max. memory is 16.1GB. [2021-11-20 06:16:47,993 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 86.0MB. Free memory was 53.9MB in the beginning and 53.9MB in the end (delta: 41.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:16:47,994 INFO L158 Benchmark]: CACSL2BoogieTranslator took 221.17ms. Allocated memory is still 113.2MB. Free memory was 86.6MB in the beginning and 76.6MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-20 06:16:47,994 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.94ms. Allocated memory is still 113.2MB. Free memory was 76.6MB in the beginning and 75.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 06:16:47,994 INFO L158 Benchmark]: Boogie Preprocessor took 40.72ms. Allocated memory is still 113.2MB. Free memory was 75.1MB in the beginning and 74.0MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:16:47,995 INFO L158 Benchmark]: RCFGBuilder took 280.21ms. Allocated memory is still 113.2MB. Free memory was 74.0MB in the beginning and 64.3MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-20 06:16:47,995 INFO L158 Benchmark]: TraceAbstraction took 589538.19ms. Allocated memory was 113.2MB in the beginning and 257.9MB in the end (delta: 144.7MB). Free memory was 63.8MB in the beginning and 218.6MB in the end (delta: -154.8MB). Peak memory consumption was 133.0MB. Max. memory is 16.1GB. [2021-11-20 06:16:47,995 INFO L158 Benchmark]: Witness Printer took 44.83ms. Allocated memory is still 257.9MB. Free memory was 218.6MB in the beginning and 216.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 06:16:47,997 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 86.0MB. Free memory was 53.9MB in the beginning and 53.9MB in the end (delta: 41.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 221.17ms. Allocated memory is still 113.2MB. Free memory was 86.6MB in the beginning and 76.6MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.94ms. Allocated memory is still 113.2MB. Free memory was 76.6MB in the beginning and 75.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.72ms. Allocated memory is still 113.2MB. Free memory was 75.1MB in the beginning and 74.0MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 280.21ms. Allocated memory is still 113.2MB. Free memory was 74.0MB in the beginning and 64.3MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 589538.19ms. Allocated memory was 113.2MB in the beginning and 257.9MB in the end (delta: 144.7MB). Free memory was 63.8MB in the beginning and 218.6MB in the end (delta: -154.8MB). Peak memory consumption was 133.0MB. Max. memory is 16.1GB. * Witness Printer took 44.83ms. Allocated memory is still 257.9MB. Free memory was 218.6MB in the beginning and 216.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_296,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_296,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_296,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_59,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_59,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_59,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_296,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_296,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_296,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_59,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_59,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_59,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_59,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_59,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_59,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_312,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_312,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_312,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_312,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_67,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_67,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_67,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_79,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_79,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_79,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_79,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_296,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_296,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_296,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_59,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_59,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_59,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_312,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_312,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_312,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_312,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_67,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_67,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_67,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_79,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_79,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_79,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_79,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_296,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_296,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_296,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_79,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_79,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_79,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_79,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_296,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_296,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_296,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_296,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_296,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_296,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_59,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_59,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_59,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_59,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_59,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_59,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_79,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_79,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_79,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_79,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_296,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_296,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_296,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_296,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_296,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_296,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_59,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_59,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_59,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_59,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_59,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_59,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 20]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 589.4s, OverallIterations: 25, TraceHistogramMax: 13, PathProgramHistogramMax: 22, EmptinessCheckTime: 0.0s, AutomataDifference: 16.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 529.6s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 664 SdHoareTripleChecker+Valid, 4.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 664 mSDsluCounter, 6322 SdHoareTripleChecker+Invalid, 3.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 1108 IncrementalHoareTripleChecker+Unchecked, 5851 mSDsCounter, 351 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8214 IncrementalHoareTripleChecker+Invalid, 9673 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 351 mSolverCounterUnsat, 471 mSDtfsCounter, 8214 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2829 GetRequests, 1766 SyntacticMatches, 58 SemanticMatches, 1005 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 13101 ImplicationChecksByTransitivity, 30.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=79occurred in iteration=24, InterpolantAutomatonStates: 605, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 25 MinimizatonAttempts, 85 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 237 NumberOfFragments, 2088 HoareAnnotationTreeSize, 4 FomulaSimplifications, 719 FormulaSimplificationTreeSizeReduction, 31.3s HoareSimplificationTime, 4 FomulaSimplificationsInter, 1562877 FormulaSimplificationTreeSizeReductionInter, 498.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 2.2s SatisfiabilityAnalysisTime, 34.8s InterpolantComputationTime, 2080 NumberOfCodeBlocks, 2080 NumberOfCodeBlocksAsserted, 126 NumberOfCheckSat, 3041 ConstructedInterpolants, 338 QuantifiedInterpolants, 28504 SizeOfPredicates, 199 NumberOfNonLiveVariables, 3205 ConjunctsInSsa, 598 ConjunctsInUnsatCore, 71 InterpolantComputations, 2 PerfectInterpolantSequences, 3048/10434 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant [2021-11-20 06:16:48,016 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] [2021-11-20 06:16:48,016 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] [2021-11-20 06:16:48,016 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] [2021-11-20 06:16:48,016 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_296,QUANTIFIED] [2021-11-20 06:16:48,017 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_296,QUANTIFIED] [2021-11-20 06:16:48,017 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_296,QUANTIFIED] [2021-11-20 06:16:48,017 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_59,QUANTIFIED] [2021-11-20 06:16:48,017 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_59,QUANTIFIED] [2021-11-20 06:16:48,017 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_59,QUANTIFIED] [2021-11-20 06:16:48,018 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] [2021-11-20 06:16:48,018 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] [2021-11-20 06:16:48,018 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] [2021-11-20 06:16:48,020 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] [2021-11-20 06:16:48,020 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] [2021-11-20 06:16:48,020 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] [2021-11-20 06:16:48,020 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_296,QUANTIFIED] [2021-11-20 06:16:48,021 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_296,QUANTIFIED] [2021-11-20 06:16:48,021 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_296,QUANTIFIED] [2021-11-20 06:16:48,021 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_59,QUANTIFIED] [2021-11-20 06:16:48,021 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_59,QUANTIFIED] [2021-11-20 06:16:48,021 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_59,QUANTIFIED] [2021-11-20 06:16:48,022 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] [2021-11-20 06:16:48,022 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] [2021-11-20 06:16:48,022 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] Derived loop invariant: (((((((((((((((0 == unknown-#memory_int-unknown[x][0] && x == 0) && unknown-#memory_int-unknown[x][12 + x] == 0) && n <= 4) && i <= 4) && !(cond == 0)) && 3 <= i) && unknown-#memory_int-unknown[x][x + 4] == 0) || (((((0 == unknown-#memory_int-unknown[x][0] && i == 0) && x == 0) && !(cond == 0)) && n <= 1) && i <= 1)) || (((((((0 == unknown-#memory_int-unknown[x][0] && x == 0) && unknown-#memory_int-unknown[x][12 + x] == 0) && n <= 4) && i <= 4) && !(cond == 0)) && 2 == i) && unknown-#memory_int-unknown[x][x + 4] == 0)) || ((((((((0 == unknown-#memory_int-unknown[x][0] && i == 0) && x == 0) && unknown-#memory_int-unknown[x][8 + x] == 0) && unknown-#memory_int-unknown[x][12 + x] == 0) && n <= 4) && i <= 4) && !(cond == 0)) && unknown-#memory_int-unknown[x][x + 4] == 0)) || ((((((0 == unknown-#memory_int-unknown[x][0] && i == 0) && x == 0) && unknown-#memory_int-unknown[x][8 + x] == 0) && !(cond == 0)) && (\exists v_ULTIMATE.start_main_~i~0#1_23 : int :: (n <= v_ULTIMATE.start_main_~i~0#1_23 + 1 && unknown-#memory_int-unknown[x][v_ULTIMATE.start_main_~i~0#1_23 * 4 + x] == 0) && v_ULTIMATE.start_main_~i~0#1_23 <= 2)) && unknown-#memory_int-unknown[x][x + 4] == 0)) || (((((((((((((((((((0 == unknown-#memory_int-unknown[x][0] && unknown-#memory_int-unknown[x][i * 4 + 28 + x] == 0) && unknown-#memory_int-unknown[x][40 + x] == 0) && unknown-#memory_int-unknown[x][i * 4 + 12 + x] == 0) && unknown-#memory_int-unknown[x][i * 4 + 16 + x] == 0) && x == 0) && unknown-#memory_int-unknown[x][12 + x] == 0) && unknown-#memory_int-unknown[x][i * 4 + 8 + x] == 0) && unknown-#memory_int-unknown[x][36 + x] == 0) && !(cond == 0)) && unknown-#memory_int-unknown[x][16 + x] == 0) && unknown-#memory_int-unknown[x][28 + x] == 0) && unknown-#memory_int-unknown[x][x + 24] == 0) && unknown-#memory_int-unknown[x][32 + x] == 0) && (forall v_ULTIMATE.start_main_~i~1#1_296 : int :: (n <= 8 + v_ULTIMATE.start_main_~i~1#1_296 || v_ULTIMATE.start_main_~i~1#1_296 < i + 1) || unknown-#memory_int-unknown[x][32 + v_ULTIMATE.start_main_~i~1#1_296 * 4 + x] == 0)) && unknown-#memory_int-unknown[x][i * 4 + x + 24] == 0) && unknown-#memory_int-unknown[x][i * 4 + x + 4] == 0) && unknown-#memory_int-unknown[x][32 + i * 4 + x] == 0) && unknown-#memory_int-unknown[x][i * 4 + 20 + x] == 0) && unknown-#memory_int-unknown[x][x + 4] == 0)) || ((((((n <= 2 && 0 == unknown-#memory_int-unknown[x][0]) && i == 0) && i <= 2) && x == 0) && !(cond == 0)) && unknown-#memory_int-unknown[x][x + 4] == 0)) || ((((((((0 == unknown-#memory_int-unknown[x][0] && i == 1) && x == 0) && unknown-#memory_int-unknown[x][12 + x] == 0) && n <= 4) && i <= 4) && !(cond == 0)) && unknown-#memory_int-unknown[x][i * 4 + x + 4] == 0) && unknown-#memory_int-unknown[x][x + 4] == 0)) || ((((((0 == unknown-#memory_int-unknown[x][0] && x == 0) && unknown-#memory_int-unknown[x][12 + x] == 0) && !(cond == 0)) && unknown-#memory_int-unknown[x][16 + x] == 0) && (forall v_ULTIMATE.start_main_~i~1#1_59 : int :: (v_ULTIMATE.start_main_~i~1#1_59 < i + 1 || n <= v_ULTIMATE.start_main_~i~1#1_59) || unknown-#memory_int-unknown[x][v_ULTIMATE.start_main_~i~1#1_59 * 4 + x] == 0)) && unknown-#memory_int-unknown[x][x + 4] == 0)) || (((((0 == unknown-#memory_int-unknown[x][0] && x == 0) && !(cond == 0)) && 1 <= i) && (\exists v_ULTIMATE.start_main_~i~0#1_23 : int :: (n <= v_ULTIMATE.start_main_~i~0#1_23 + 1 && unknown-#memory_int-unknown[x][v_ULTIMATE.start_main_~i~0#1_23 * 4 + x] == 0) && v_ULTIMATE.start_main_~i~0#1_23 <= 2)) && unknown-#memory_int-unknown[x][x + 4] == 0) - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 30]: Loop Invariant [2021-11-20 06:16:48,024 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] [2021-11-20 06:16:48,024 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] [2021-11-20 06:16:48,025 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] [2021-11-20 06:16:48,025 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_59,QUANTIFIED] [2021-11-20 06:16:48,025 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_59,QUANTIFIED] [2021-11-20 06:16:48,025 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_59,QUANTIFIED] [2021-11-20 06:16:48,025 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_312,QUANTIFIED] [2021-11-20 06:16:48,026 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_312,QUANTIFIED] [2021-11-20 06:16:48,026 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_312,QUANTIFIED] [2021-11-20 06:16:48,026 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_312,QUANTIFIED] [2021-11-20 06:16:48,026 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_67,QUANTIFIED] [2021-11-20 06:16:48,026 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_67,QUANTIFIED] [2021-11-20 06:16:48,027 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_67,QUANTIFIED] [2021-11-20 06:16:48,027 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_79,QUANTIFIED] [2021-11-20 06:16:48,027 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_79,QUANTIFIED] [2021-11-20 06:16:48,027 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_79,QUANTIFIED] [2021-11-20 06:16:48,027 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0#1,QUANTIFIED] [2021-11-20 06:16:48,028 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_79,QUANTIFIED] [2021-11-20 06:16:48,028 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0#1,QUANTIFIED] [2021-11-20 06:16:48,028 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_296,QUANTIFIED] [2021-11-20 06:16:48,028 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_296,QUANTIFIED] [2021-11-20 06:16:48,029 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_296,QUANTIFIED] [2021-11-20 06:16:48,030 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] [2021-11-20 06:16:48,030 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] [2021-11-20 06:16:48,030 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] [2021-11-20 06:16:48,031 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_59,QUANTIFIED] [2021-11-20 06:16:48,031 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_59,QUANTIFIED] [2021-11-20 06:16:48,031 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_59,QUANTIFIED] [2021-11-20 06:16:48,031 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_312,QUANTIFIED] [2021-11-20 06:16:48,031 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_312,QUANTIFIED] [2021-11-20 06:16:48,032 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_312,QUANTIFIED] [2021-11-20 06:16:48,032 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_312,QUANTIFIED] [2021-11-20 06:16:48,032 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_67,QUANTIFIED] [2021-11-20 06:16:48,032 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_67,QUANTIFIED] [2021-11-20 06:16:48,032 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_67,QUANTIFIED] [2021-11-20 06:16:48,033 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_79,QUANTIFIED] [2021-11-20 06:16:48,033 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_79,QUANTIFIED] [2021-11-20 06:16:48,033 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_79,QUANTIFIED] [2021-11-20 06:16:48,033 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0#1,QUANTIFIED] [2021-11-20 06:16:48,033 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_79,QUANTIFIED] [2021-11-20 06:16:48,034 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0#1,QUANTIFIED] [2021-11-20 06:16:48,034 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_296,QUANTIFIED] [2021-11-20 06:16:48,034 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_296,QUANTIFIED] [2021-11-20 06:16:48,034 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_296,QUANTIFIED] Derived loop invariant: ((((((((0 == unknown-#memory_int-unknown[x][0] && x == 0) && 2 <= i) && (\exists v_ULTIMATE.start_main_~i~0#1_23 : int :: (unknown-#memory_int-unknown[x][v_ULTIMATE.start_main_~i~0#1_23 * 4 + x] == 0 && v_ULTIMATE.start_main_~i~0#1_23 <= 2) && i <= v_ULTIMATE.start_main_~i~0#1_23 + 1)) && unknown-#memory_int-unknown[x][x + 4] == 0) || ((((((((0 == unknown-#memory_int-unknown[x][0] && x == 0) && unknown-#memory_int-unknown[x][8 + x] == 0) && unknown-#memory_int-unknown[x][12 + x] == 0) && unknown-#memory_int-unknown[x][16 + x] == 0) && (forall v_ULTIMATE.start_main_~i~1#1_59 : int :: (v_ULTIMATE.start_main_~i~1#1_59 < 5 || unknown-#memory_int-unknown[x][v_ULTIMATE.start_main_~i~1#1_59 * 4 + x] == 0) || i <= v_ULTIMATE.start_main_~i~1#1_59)) && (\exists v_ULTIMATE.start_main_~i~0#1_312 : int :: ((unknown-#memory_int-unknown[x][v_ULTIMATE.start_main_~i~0#1_312 * 4 + x] == 0 && v_ULTIMATE.start_main_~i~0#1_312 <= 12) && unknown-#memory_int-unknown[x][v_ULTIMATE.start_main_~i~0#1_312 * 4 + -4 + x] == 0) && i <= v_ULTIMATE.start_main_~i~0#1_312 + 1)) && 6 <= i) && unknown-#memory_int-unknown[x][x + 4] == 0)) || ((((((0 == unknown-#memory_int-unknown[x][0] && x == 0) && unknown-#memory_int-unknown[x][8 + x] == 0) && unknown-#memory_int-unknown[x][12 + x] == 0) && 4 <= i) && (\exists v_ULTIMATE.start_main_~i~0#1_67 : int :: (unknown-#memory_int-unknown[x][v_ULTIMATE.start_main_~i~0#1_67 * 4 + x] == 0 && v_ULTIMATE.start_main_~i~0#1_67 <= 4) && i <= v_ULTIMATE.start_main_~i~0#1_67 + 1)) && unknown-#memory_int-unknown[x][x + 4] == 0)) || (x == 0 && 4 * i + x == 0)) || (((1 <= i && unknown-#memory_int-unknown[x][-4 + i * 4 + x] == 0) && x == 0) && i <= 1)) || ((((((((((((((\exists ULTIMATE.start_main_~i~0#1 : int, v_ULTIMATE.start_main_~i~0#1_79 : int :: (((5 <= v_ULTIMATE.start_main_~i~0#1_79 && unknown-#memory_int-unknown[x][v_ULTIMATE.start_main_~i~0#1_79 * 4 + x] == 0) && v_ULTIMATE.start_main_~i~0#1_79 + 1 <= ULTIMATE.start_main_~i~0#1) && v_ULTIMATE.start_main_~i~0#1_79 <= 5) && unknown-#memory_int-unknown[x][ULTIMATE.start_main_~i~0#1 * 4 + x] == 0) && 0 == unknown-#memory_int-unknown[x][0]) && unknown-#memory_int-unknown[x][40 + x] == 0) && unknown-#memory_int-unknown[x][44 + x] == 0) && (forall v_ULTIMATE.start_main_~i~1#1_296 : int :: (i <= 8 + v_ULTIMATE.start_main_~i~1#1_296 || v_ULTIMATE.start_main_~i~1#1_296 < 3) || unknown-#memory_int-unknown[x][32 + v_ULTIMATE.start_main_~i~1#1_296 * 4 + x] == 0)) && x == 0) && unknown-#memory_int-unknown[x][8 + x] == 0) && unknown-#memory_int-unknown[x][12 + x] == 0) && unknown-#memory_int-unknown[x][36 + x] == 0) && unknown-#memory_int-unknown[x][16 + x] == 0) && unknown-#memory_int-unknown[x][28 + x] == 0) && unknown-#memory_int-unknown[x][x + 24] == 0) && unknown-#memory_int-unknown[x][32 + x] == 0) && unknown-#memory_int-unknown[x][x + 4] == 0) - InvariantResult [Line: 31]: Loop Invariant [2021-11-20 06:16:48,036 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] [2021-11-20 06:16:48,036 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] [2021-11-20 06:16:48,036 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] [2021-11-20 06:16:48,037 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_79,QUANTIFIED] [2021-11-20 06:16:48,037 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_79,QUANTIFIED] [2021-11-20 06:16:48,037 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_79,QUANTIFIED] [2021-11-20 06:16:48,038 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0#1,QUANTIFIED] [2021-11-20 06:16:48,038 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_79,QUANTIFIED] [2021-11-20 06:16:48,038 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0#1,QUANTIFIED] [2021-11-20 06:16:48,038 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_296,QUANTIFIED] [2021-11-20 06:16:48,039 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_296,QUANTIFIED] [2021-11-20 06:16:48,039 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_296,QUANTIFIED] [2021-11-20 06:16:48,039 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_296,QUANTIFIED] [2021-11-20 06:16:48,039 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_296,QUANTIFIED] [2021-11-20 06:16:48,040 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_296,QUANTIFIED] [2021-11-20 06:16:48,040 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_59,QUANTIFIED] [2021-11-20 06:16:48,040 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_59,QUANTIFIED] [2021-11-20 06:16:48,040 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_59,QUANTIFIED] [2021-11-20 06:16:48,041 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] [2021-11-20 06:16:48,041 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] [2021-11-20 06:16:48,041 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] [2021-11-20 06:16:48,042 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_59,QUANTIFIED] [2021-11-20 06:16:48,042 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_59,QUANTIFIED] [2021-11-20 06:16:48,042 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_59,QUANTIFIED] [2021-11-20 06:16:48,042 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] [2021-11-20 06:16:48,042 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] [2021-11-20 06:16:48,043 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] [2021-11-20 06:16:48,046 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] [2021-11-20 06:16:48,046 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] [2021-11-20 06:16:48,046 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] [2021-11-20 06:16:48,046 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_79,QUANTIFIED] [2021-11-20 06:16:48,047 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_79,QUANTIFIED] [2021-11-20 06:16:48,047 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_79,QUANTIFIED] [2021-11-20 06:16:48,047 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0#1,QUANTIFIED] [2021-11-20 06:16:48,047 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_79,QUANTIFIED] [2021-11-20 06:16:48,048 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0#1,QUANTIFIED] [2021-11-20 06:16:48,048 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_296,QUANTIFIED] [2021-11-20 06:16:48,048 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_296,QUANTIFIED] [2021-11-20 06:16:48,049 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_296,QUANTIFIED] [2021-11-20 06:16:48,049 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_296,QUANTIFIED] [2021-11-20 06:16:48,049 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_296,QUANTIFIED] [2021-11-20 06:16:48,049 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_296,QUANTIFIED] [2021-11-20 06:16:48,050 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_59,QUANTIFIED] [2021-11-20 06:16:48,050 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_59,QUANTIFIED] [2021-11-20 06:16:48,050 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_59,QUANTIFIED] [2021-11-20 06:16:48,050 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] [2021-11-20 06:16:48,051 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] [2021-11-20 06:16:48,051 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] [2021-11-20 06:16:48,051 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_59,QUANTIFIED] [2021-11-20 06:16:48,051 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_59,QUANTIFIED] [2021-11-20 06:16:48,052 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_59,QUANTIFIED] [2021-11-20 06:16:48,052 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] [2021-11-20 06:16:48,052 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] [2021-11-20 06:16:48,052 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_23,QUANTIFIED] Derived loop invariant: ((((((((((((((((((((unknown-#memory_int-unknown[x][i * 4 + x] == 0 && i == 0) && x == 0) && unknown-#memory_int-unknown[x][8 + x] == 0) && (\exists v_ULTIMATE.start_main_~i~0#1_23 : int :: (n <= v_ULTIMATE.start_main_~i~0#1_23 + 1 && unknown-#memory_int-unknown[x][v_ULTIMATE.start_main_~i~0#1_23 * 4 + x] == 0) && v_ULTIMATE.start_main_~i~0#1_23 <= 2)) && unknown-#memory_int-unknown[x][x + 4] == 0) || ((((((((((((((\exists ULTIMATE.start_main_~i~0#1 : int, v_ULTIMATE.start_main_~i~0#1_79 : int :: (((5 <= v_ULTIMATE.start_main_~i~0#1_79 && unknown-#memory_int-unknown[x][v_ULTIMATE.start_main_~i~0#1_79 * 4 + x] == 0) && v_ULTIMATE.start_main_~i~0#1_79 + 1 <= ULTIMATE.start_main_~i~0#1) && v_ULTIMATE.start_main_~i~0#1_79 <= 5) && unknown-#memory_int-unknown[x][ULTIMATE.start_main_~i~0#1 * 4 + x] == 0) && unknown-#memory_int-unknown[x][i * 4 + x] == 0) && unknown-#memory_int-unknown[x][40 + x] == 0) && i == 0) && x == 0) && unknown-#memory_int-unknown[x][8 + x] == 0) && unknown-#memory_int-unknown[x][12 + x] == 0) && (forall v_ULTIMATE.start_main_~i~1#1_296 : int :: (v_ULTIMATE.start_main_~i~1#1_296 < 3 + i || n <= 8 + v_ULTIMATE.start_main_~i~1#1_296) || unknown-#memory_int-unknown[x][32 + v_ULTIMATE.start_main_~i~1#1_296 * 4 + x] == 0)) && unknown-#memory_int-unknown[x][36 + x] == 0) && unknown-#memory_int-unknown[x][16 + x] == 0) && unknown-#memory_int-unknown[x][28 + x] == 0) && unknown-#memory_int-unknown[x][x + 24] == 0) && unknown-#memory_int-unknown[x][32 + x] == 0) && unknown-#memory_int-unknown[x][x + 4] == 0)) || ((((((((((((((((((((0 == unknown-#memory_int-unknown[x][0] && (unknown-#memory_int-unknown[x][i * 4 + x] == 0 || n <= i)) && unknown-#memory_int-unknown[x][i * 4 + 28 + x] == 0) && unknown-#memory_int-unknown[x][40 + x] == 0) && unknown-#memory_int-unknown[x][i * 4 + 12 + x] == 0) && unknown-#memory_int-unknown[x][i * 4 + 16 + x] == 0) && x == 0) && unknown-#memory_int-unknown[x][12 + x] == 0) && unknown-#memory_int-unknown[x][i * 4 + 8 + x] == 0) && unknown-#memory_int-unknown[x][36 + x] == 0) && !(cond == 0)) && unknown-#memory_int-unknown[x][16 + x] == 0) && unknown-#memory_int-unknown[x][28 + x] == 0) && unknown-#memory_int-unknown[x][x + 24] == 0) && unknown-#memory_int-unknown[x][32 + x] == 0) && (forall v_ULTIMATE.start_main_~i~1#1_296 : int :: (n <= 8 + v_ULTIMATE.start_main_~i~1#1_296 || v_ULTIMATE.start_main_~i~1#1_296 < i + 1) || unknown-#memory_int-unknown[x][32 + v_ULTIMATE.start_main_~i~1#1_296 * 4 + x] == 0)) && unknown-#memory_int-unknown[x][i * 4 + x + 24] == 0) && unknown-#memory_int-unknown[x][i * 4 + x + 4] == 0) && unknown-#memory_int-unknown[x][32 + i * 4 + x] == 0) && unknown-#memory_int-unknown[x][i * 4 + 20 + x] == 0) && unknown-#memory_int-unknown[x][x + 4] == 0)) || (((((((unknown-#memory_int-unknown[x][i * 4 + x] == 0 && i == 0) && x == 0) && unknown-#memory_int-unknown[x][8 + x] == 0) && unknown-#memory_int-unknown[x][12 + x] == 0) && unknown-#memory_int-unknown[x][16 + x] == 0) && (forall v_ULTIMATE.start_main_~i~1#1_59 : int :: (v_ULTIMATE.start_main_~i~1#1_59 < 5 + i || n <= v_ULTIMATE.start_main_~i~1#1_59) || unknown-#memory_int-unknown[x][v_ULTIMATE.start_main_~i~1#1_59 * 4 + x] == 0)) && unknown-#memory_int-unknown[x][x + 4] == 0)) || (((((((0 == unknown-#memory_int-unknown[x][0] && 3 == i) && x == 0) && unknown-#memory_int-unknown[x][12 + x] == 0) && n <= 4) && i <= 4) && !(cond == 0)) && unknown-#memory_int-unknown[x][x + 4] == 0)) || (((((((unknown-#memory_int-unknown[x][i * 4 + x] == 0 && i == 0) && x == 0) && unknown-#memory_int-unknown[x][8 + x] == 0) && unknown-#memory_int-unknown[x][12 + x] == 0) && n <= 4) && i <= 4) && unknown-#memory_int-unknown[x][x + 4] == 0)) || (((((((4 <= i && 0 == unknown-#memory_int-unknown[x][0]) && x == 0) && unknown-#memory_int-unknown[x][12 + x] == 0) && n <= 4) && i <= 4) && !(cond == 0)) && unknown-#memory_int-unknown[x][x + 4] == 0)) || ((i == 0 && i == 0) && n <= 0)) || ((((((0 == unknown-#memory_int-unknown[x][0] && i == 1) && x == 0) && !(cond == 0)) && (\exists v_ULTIMATE.start_main_~i~0#1_23 : int :: (n <= v_ULTIMATE.start_main_~i~0#1_23 + 1 && unknown-#memory_int-unknown[x][v_ULTIMATE.start_main_~i~0#1_23 * 4 + x] == 0) && v_ULTIMATE.start_main_~i~0#1_23 <= 2)) && unknown-#memory_int-unknown[x][i * 4 + x + 4] == 0) && unknown-#memory_int-unknown[x][x + 4] == 0)) || ((((((((0 == unknown-#memory_int-unknown[x][0] && i == 1) && x == 0) && unknown-#memory_int-unknown[x][12 + x] == 0) && n <= 4) && i <= 4) && !(cond == 0)) && unknown-#memory_int-unknown[x][i * 4 + x + 4] == 0) && unknown-#memory_int-unknown[x][x + 4] == 0)) || (((((((0 == unknown-#memory_int-unknown[x][0] && (unknown-#memory_int-unknown[x][i * 4 + x] == 0 || n <= i)) && x == 0) && unknown-#memory_int-unknown[x][12 + x] == 0) && !(cond == 0)) && unknown-#memory_int-unknown[x][16 + x] == 0) && (forall v_ULTIMATE.start_main_~i~1#1_59 : int :: (v_ULTIMATE.start_main_~i~1#1_59 < i + 1 || n <= v_ULTIMATE.start_main_~i~1#1_59) || unknown-#memory_int-unknown[x][v_ULTIMATE.start_main_~i~1#1_59 * 4 + x] == 0)) && unknown-#memory_int-unknown[x][x + 4] == 0)) || ((((unknown-#memory_int-unknown[x][i * 4 + x] == 0 && i == 0) && x == 0) && n <= 1) && i <= 1)) || ((((((((0 == unknown-#memory_int-unknown[x][0] && unknown-#memory_int-unknown[x][i * 4 + x] == 0) && x == 0) && unknown-#memory_int-unknown[x][12 + x] == 0) && n <= 4) && i <= 4) && !(cond == 0)) && 2 == i) && unknown-#memory_int-unknown[x][x + 4] == 0)) || (((((n <= 2 && unknown-#memory_int-unknown[x][i * 4 + x] == 0) && i == 0) && i <= 2) && x == 0) && unknown-#memory_int-unknown[x][x + 4] == 0)) || (((((0 == unknown-#memory_int-unknown[x][0] && x == 0) && !(cond == 0)) && 1 <= i) && n <= 1) && i <= 1)) || (((((0 == unknown-#memory_int-unknown[x][0] && 2 <= i) && x == 0) && !(cond == 0)) && (\exists v_ULTIMATE.start_main_~i~0#1_23 : int :: (n <= v_ULTIMATE.start_main_~i~0#1_23 + 1 && unknown-#memory_int-unknown[x][v_ULTIMATE.start_main_~i~0#1_23 * 4 + x] == 0) && v_ULTIMATE.start_main_~i~0#1_23 <= 2)) && unknown-#memory_int-unknown[x][x + 4] == 0)) || ((((((n <= 2 && 0 == unknown-#memory_int-unknown[x][0]) && i <= 2) && i == 1) && x == 0) && !(cond == 0)) && unknown-#memory_int-unknown[x][x + 4] == 0) RESULT: Ultimate proved your program to be correct! [2021-11-20 06:16:48,272 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c881ec-a2aa-46f4-8eff-99fd20702668/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE