./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/heap-manipulation/merge_sort-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/heap-manipulation/merge_sort-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be --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 e47f94c757882803b8e19e21a897c3f5ab1653c3391e3b246153a1c416bdab7c ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/heap-manipulation/merge_sort-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be --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 e47f94c757882803b8e19e21a897c3f5ab1653c3391e3b246153a1c416bdab7c ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 20:27:14,193 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 20:27:14,196 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 20:27:14,264 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 20:27:14,265 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 20:27:14,271 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 20:27:14,274 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 20:27:14,279 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 20:27:14,283 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 20:27:14,290 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 20:27:14,291 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 20:27:14,293 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 20:27:14,293 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 20:27:14,295 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 20:27:14,296 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 20:27:14,298 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 20:27:14,299 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 20:27:14,300 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 20:27:14,303 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 20:27:14,305 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 20:27:14,308 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 20:27:14,310 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 20:27:14,312 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 20:27:14,313 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 20:27:14,318 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 20:27:14,318 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 20:27:14,319 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 20:27:14,320 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 20:27:14,321 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 20:27:14,322 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 20:27:14,323 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 20:27:14,324 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 20:27:14,325 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 20:27:14,326 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 20:27:14,328 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 20:27:14,328 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 20:27:14,329 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 20:27:14,329 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 20:27:14,330 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 20:27:14,331 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 20:27:14,332 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 20:27:14,333 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-21 20:27:14,363 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 20:27:14,363 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 20:27:14,364 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 20:27:14,364 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 20:27:14,366 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 20:27:14,366 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 20:27:14,366 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 20:27:14,367 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 20:27:14,367 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 20:27:14,367 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 20:27:14,367 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 20:27:14,368 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 20:27:14,368 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 20:27:14,368 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 20:27:14,368 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 20:27:14,369 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 20:27:14,369 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 20:27:14,369 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 20:27:14,369 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 20:27:14,370 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 20:27:14,370 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 20:27:14,370 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 20:27:14,370 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:27:14,371 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 20:27:14,371 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 20:27:14,371 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 20:27:14,372 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 20:27:14,372 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 20:27:14,372 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 20:27:14,372 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 20:27:14,373 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 20:27:14,373 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 20:27:14,373 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_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e47f94c757882803b8e19e21a897c3f5ab1653c3391e3b246153a1c416bdab7c [2021-10-21 20:27:14,709 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 20:27:14,738 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 20:27:14,742 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 20:27:14,743 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 20:27:14,744 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 20:27:14,746 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/heap-manipulation/merge_sort-2.i [2021-10-21 20:27:14,835 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/data/cadfc4b96/b852a4d9bf81464883211132fc72f568/FLAG8cb596311 [2021-10-21 20:27:15,531 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 20:27:15,532 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/sv-benchmarks/c/heap-manipulation/merge_sort-2.i [2021-10-21 20:27:15,563 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/data/cadfc4b96/b852a4d9bf81464883211132fc72f568/FLAG8cb596311 [2021-10-21 20:27:15,761 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/data/cadfc4b96/b852a4d9bf81464883211132fc72f568 [2021-10-21 20:27:15,764 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 20:27:15,767 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 20:27:15,770 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 20:27:15,771 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 20:27:15,775 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 20:27:15,776 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:27:15" (1/1) ... [2021-10-21 20:27:15,777 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61ca6934 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:27:15, skipping insertion in model container [2021-10-21 20:27:15,778 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:27:15" (1/1) ... [2021-10-21 20:27:15,785 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 20:27:15,842 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 20:27:16,233 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/sv-benchmarks/c/heap-manipulation/merge_sort-2.i[22632,22645] [2021-10-21 20:27:16,300 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:27:16,311 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 20:27:16,380 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/sv-benchmarks/c/heap-manipulation/merge_sort-2.i[22632,22645] [2021-10-21 20:27:16,406 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:27:16,449 INFO L208 MainTranslator]: Completed translation [2021-10-21 20:27:16,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:27:16 WrapperNode [2021-10-21 20:27:16,451 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 20:27:16,452 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 20:27:16,452 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 20:27:16,452 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 20:27:16,462 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:27:16" (1/1) ... [2021-10-21 20:27:16,508 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:27:16" (1/1) ... [2021-10-21 20:27:16,567 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 20:27:16,570 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 20:27:16,571 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 20:27:16,571 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 20:27:16,581 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:27:16" (1/1) ... [2021-10-21 20:27:16,581 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:27:16" (1/1) ... [2021-10-21 20:27:16,603 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:27:16" (1/1) ... [2021-10-21 20:27:16,609 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:27:16" (1/1) ... [2021-10-21 20:27:16,639 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:27:16" (1/1) ... [2021-10-21 20:27:16,647 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:27:16" (1/1) ... [2021-10-21 20:27:16,664 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:27:16" (1/1) ... [2021-10-21 20:27:16,669 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 20:27:16,670 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 20:27:16,670 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 20:27:16,670 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 20:27:16,671 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:27:16" (1/1) ... [2021-10-21 20:27:16,690 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:27:16,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:27:16,721 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 20:27:16,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 20:27:16,780 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-21 20:27:16,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-21 20:27:16,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-21 20:27:16,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-21 20:27:16,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 20:27:16,781 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-21 20:27:16,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-21 20:27:16,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 20:27:16,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 20:27:16,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 20:27:17,537 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 20:27:17,538 INFO L299 CfgBuilder]: Removed 75 assume(true) statements. [2021-10-21 20:27:17,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:27:17 BoogieIcfgContainer [2021-10-21 20:27:17,540 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 20:27:17,542 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 20:27:17,542 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 20:27:17,546 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 20:27:17,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 08:27:15" (1/3) ... [2021-10-21 20:27:17,547 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77e23783 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:27:17, skipping insertion in model container [2021-10-21 20:27:17,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:27:16" (2/3) ... [2021-10-21 20:27:17,547 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77e23783 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:27:17, skipping insertion in model container [2021-10-21 20:27:17,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:27:17" (3/3) ... [2021-10-21 20:27:17,549 INFO L111 eAbstractionObserver]: Analyzing ICFG merge_sort-2.i [2021-10-21 20:27:17,555 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 20:27:17,555 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2021-10-21 20:27:17,603 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 20:27:17,610 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 [2021-10-21 20:27:17,610 INFO L340 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2021-10-21 20:27:17,629 INFO L276 IsEmpty]: Start isEmpty. Operand has 99 states, 85 states have (on average 1.8705882352941177) internal successors, (159), 98 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:27:17,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-21 20:27:17,634 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:27:17,635 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-21 20:27:17,636 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-10-21 20:27:17,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:27:17,642 INFO L82 PathProgramCache]: Analyzing trace with hash 890218827, now seen corresponding path program 1 times [2021-10-21 20:27:17,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:27:17,653 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477529096] [2021-10-21 20:27:17,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:27:17,654 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:27:17,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:27:17,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:27:17,804 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:27:17,804 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477529096] [2021-10-21 20:27:17,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477529096] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:27:17,805 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:27:17,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 20:27:17,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122544091] [2021-10-21 20:27:17,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-21 20:27:17,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:27:17,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-21 20:27:17,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 20:27:17,831 INFO L87 Difference]: Start difference. First operand has 99 states, 85 states have (on average 1.8705882352941177) internal successors, (159), 98 states have internal predecessors, (159), 0 states have call successors, (0), 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 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:27:17,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:27:17,862 INFO L93 Difference]: Finished difference Result 196 states and 316 transitions. [2021-10-21 20:27:17,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-21 20:27:17,864 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-21 20:27:17,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:27:17,874 INFO L225 Difference]: With dead ends: 196 [2021-10-21 20:27:17,874 INFO L226 Difference]: Without dead ends: 92 [2021-10-21 20:27:17,877 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 20:27:17,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-10-21 20:27:17,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2021-10-21 20:27:17,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 79 states have (on average 1.2911392405063291) internal successors, (102), 91 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) [2021-10-21 20:27:17,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 102 transitions. [2021-10-21 20:27:17,918 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 102 transitions. Word has length 6 [2021-10-21 20:27:17,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:27:17,918 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 102 transitions. [2021-10-21 20:27:17,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:27:17,919 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 102 transitions. [2021-10-21 20:27:17,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-21 20:27:17,920 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:27:17,920 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:27:17,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 20:27:17,921 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-10-21 20:27:17,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:27:17,922 INFO L82 PathProgramCache]: Analyzing trace with hash 1806865150, now seen corresponding path program 1 times [2021-10-21 20:27:17,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:27:17,922 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908547701] [2021-10-21 20:27:17,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:27:17,923 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:27:17,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:27:17,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:27:17,988 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:27:17,989 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908547701] [2021-10-21 20:27:17,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908547701] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:27:17,990 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:27:17,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 20:27:17,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355262650] [2021-10-21 20:27:17,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 20:27:17,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:27:17,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:27:17,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:27:17,994 INFO L87 Difference]: Start difference. First operand 92 states and 102 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:27:18,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:27:18,023 INFO L93 Difference]: Finished difference Result 182 states and 202 transitions. [2021-10-21 20:27:18,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:27:18,024 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-21 20:27:18,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:27:18,026 INFO L225 Difference]: With dead ends: 182 [2021-10-21 20:27:18,026 INFO L226 Difference]: Without dead ends: 98 [2021-10-21 20:27:18,028 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:27:18,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-10-21 20:27:18,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 94. [2021-10-21 20:27:18,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 81 states have (on average 1.2839506172839505) internal successors, (104), 93 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:27:18,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 104 transitions. [2021-10-21 20:27:18,039 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 104 transitions. Word has length 7 [2021-10-21 20:27:18,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:27:18,039 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 104 transitions. [2021-10-21 20:27:18,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:27:18,040 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 104 transitions. [2021-10-21 20:27:18,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-21 20:27:18,041 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:27:18,041 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:27:18,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-21 20:27:18,041 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-10-21 20:27:18,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:27:18,042 INFO L82 PathProgramCache]: Analyzing trace with hash 663763925, now seen corresponding path program 1 times [2021-10-21 20:27:18,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:27:18,043 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930263412] [2021-10-21 20:27:18,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:27:18,043 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:27:18,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:27:18,155 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:27:18,155 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:27:18,156 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930263412] [2021-10-21 20:27:18,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930263412] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:27:18,156 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:27:18,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 20:27:18,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936180013] [2021-10-21 20:27:18,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 20:27:18,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:27:18,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 20:27:18,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:27:18,160 INFO L87 Difference]: Start difference. First operand 94 states and 104 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 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) [2021-10-21 20:27:18,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:27:18,287 INFO L93 Difference]: Finished difference Result 251 states and 286 transitions. [2021-10-21 20:27:18,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 20:27:18,288 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-21 20:27:18,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:27:18,291 INFO L225 Difference]: With dead ends: 251 [2021-10-21 20:27:18,291 INFO L226 Difference]: Without dead ends: 245 [2021-10-21 20:27:18,292 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 35.6ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-21 20:27:18,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2021-10-21 20:27:18,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 96. [2021-10-21 20:27:18,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 84 states have (on average 1.2738095238095237) internal successors, (107), 95 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) [2021-10-21 20:27:18,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 107 transitions. [2021-10-21 20:27:18,316 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 107 transitions. Word has length 13 [2021-10-21 20:27:18,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:27:18,316 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 107 transitions. [2021-10-21 20:27:18,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 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) [2021-10-21 20:27:18,317 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 107 transitions. [2021-10-21 20:27:18,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-21 20:27:18,318 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:27:18,318 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:27:18,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-21 20:27:18,319 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-10-21 20:27:18,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:27:18,319 INFO L82 PathProgramCache]: Analyzing trace with hash 2036062252, now seen corresponding path program 1 times [2021-10-21 20:27:18,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:27:18,320 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896344808] [2021-10-21 20:27:18,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:27:18,322 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:27:18,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:27:18,485 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-21 20:27:18,486 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:27:18,486 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896344808] [2021-10-21 20:27:18,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896344808] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:27:18,491 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:27:18,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 20:27:18,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264736265] [2021-10-21 20:27:18,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 20:27:18,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:27:18,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 20:27:18,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:27:18,494 INFO L87 Difference]: Start difference. First operand 96 states and 107 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:27:18,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:27:18,699 INFO L93 Difference]: Finished difference Result 125 states and 139 transitions. [2021-10-21 20:27:18,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 20:27:18,700 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-21 20:27:18,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:27:18,702 INFO L225 Difference]: With dead ends: 125 [2021-10-21 20:27:18,703 INFO L226 Difference]: Without dead ends: 123 [2021-10-21 20:27:18,703 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.6ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:27:18,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-10-21 20:27:18,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 94. [2021-10-21 20:27:18,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 83 states have (on average 1.2650602409638554) internal successors, (105), 93 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:27:18,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 105 transitions. [2021-10-21 20:27:18,730 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 105 transitions. Word has length 20 [2021-10-21 20:27:18,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:27:18,732 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 105 transitions. [2021-10-21 20:27:18,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:27:18,732 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 105 transitions. [2021-10-21 20:27:18,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-21 20:27:18,735 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:27:18,736 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:27:18,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-21 20:27:18,736 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-10-21 20:27:18,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:27:18,739 INFO L82 PathProgramCache]: Analyzing trace with hash 2014113239, now seen corresponding path program 1 times [2021-10-21 20:27:18,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:27:18,740 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636397384] [2021-10-21 20:27:18,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:27:18,741 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:27:18,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:27:18,896 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-21 20:27:18,897 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:27:18,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636397384] [2021-10-21 20:27:18,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636397384] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:27:18,898 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:27:18,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 20:27:18,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209019895] [2021-10-21 20:27:18,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 20:27:18,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:27:18,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 20:27:18,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:27:18,901 INFO L87 Difference]: Start difference. First operand 94 states and 105 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:27:19,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:27:19,082 INFO L93 Difference]: Finished difference Result 94 states and 105 transitions. [2021-10-21 20:27:19,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 20:27:19,083 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-21 20:27:19,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:27:19,084 INFO L225 Difference]: With dead ends: 94 [2021-10-21 20:27:19,084 INFO L226 Difference]: Without dead ends: 92 [2021-10-21 20:27:19,085 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.0ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:27:19,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-10-21 20:27:19,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2021-10-21 20:27:19,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 82 states have (on average 1.2560975609756098) internal successors, (103), 91 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:27:19,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 103 transitions. [2021-10-21 20:27:19,102 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 103 transitions. Word has length 20 [2021-10-21 20:27:19,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:27:19,102 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 103 transitions. [2021-10-21 20:27:19,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:27:19,103 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 103 transitions. [2021-10-21 20:27:19,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-21 20:27:19,105 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:27:19,105 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:27:19,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-21 20:27:19,106 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-10-21 20:27:19,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:27:19,106 INFO L82 PathProgramCache]: Analyzing trace with hash -1486605840, now seen corresponding path program 1 times [2021-10-21 20:27:19,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:27:19,107 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93876833] [2021-10-21 20:27:19,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:27:19,108 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:27:19,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:27:19,202 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:27:19,203 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:27:19,203 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93876833] [2021-10-21 20:27:19,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93876833] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:27:19,204 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:27:19,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-21 20:27:19,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274273188] [2021-10-21 20:27:19,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 20:27:19,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:27:19,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 20:27:19,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:27:19,206 INFO L87 Difference]: Start difference. First operand 92 states and 103 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:27:19,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:27:19,496 INFO L93 Difference]: Finished difference Result 210 states and 230 transitions. [2021-10-21 20:27:19,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 20:27:19,496 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-21 20:27:19,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:27:19,498 INFO L225 Difference]: With dead ends: 210 [2021-10-21 20:27:19,498 INFO L226 Difference]: Without dead ends: 208 [2021-10-21 20:27:19,500 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 50.2ms TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:27:19,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-10-21 20:27:19,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 98. [2021-10-21 20:27:19,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 88 states have (on average 1.2386363636363635) internal successors, (109), 97 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:27:19,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 109 transitions. [2021-10-21 20:27:19,511 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 109 transitions. Word has length 23 [2021-10-21 20:27:19,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:27:19,511 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 109 transitions. [2021-10-21 20:27:19,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:27:19,512 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 109 transitions. [2021-10-21 20:27:19,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-21 20:27:19,513 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:27:19,513 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:27:19,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-21 20:27:19,520 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-10-21 20:27:19,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:27:19,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1760261746, now seen corresponding path program 1 times [2021-10-21 20:27:19,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:27:19,524 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502210673] [2021-10-21 20:27:19,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:27:19,525 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:27:19,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:27:19,608 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:27:19,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:27:19,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502210673] [2021-10-21 20:27:19,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502210673] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:27:19,609 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:27:19,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-21 20:27:19,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60436768] [2021-10-21 20:27:19,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 20:27:19,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:27:19,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 20:27:19,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:27:19,611 INFO L87 Difference]: Start difference. First operand 98 states and 109 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:27:19,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:27:19,848 INFO L93 Difference]: Finished difference Result 208 states and 228 transitions. [2021-10-21 20:27:19,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 20:27:19,848 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-21 20:27:19,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:27:19,850 INFO L225 Difference]: With dead ends: 208 [2021-10-21 20:27:19,850 INFO L226 Difference]: Without dead ends: 206 [2021-10-21 20:27:19,850 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 42.9ms TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:27:19,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-10-21 20:27:19,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 104. [2021-10-21 20:27:19,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 94 states have (on average 1.2234042553191489) internal successors, (115), 103 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:27:19,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 115 transitions. [2021-10-21 20:27:19,856 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 115 transitions. Word has length 23 [2021-10-21 20:27:19,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:27:19,856 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 115 transitions. [2021-10-21 20:27:19,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:27:19,857 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 115 transitions. [2021-10-21 20:27:19,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-21 20:27:19,858 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:27:19,858 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:27:19,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-21 20:27:19,858 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-10-21 20:27:19,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:27:19,859 INFO L82 PathProgramCache]: Analyzing trace with hash -2060804288, now seen corresponding path program 1 times [2021-10-21 20:27:19,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:27:19,859 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251759542] [2021-10-21 20:27:19,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:27:19,860 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:27:19,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:27:20,065 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:27:20,065 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:27:20,066 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251759542] [2021-10-21 20:27:20,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251759542] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:27:20,066 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:27:20,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-21 20:27:20,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824563853] [2021-10-21 20:27:20,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 20:27:20,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:27:20,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 20:27:20,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:27:20,069 INFO L87 Difference]: Start difference. First operand 104 states and 115 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 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) [2021-10-21 20:27:20,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:27:20,690 INFO L93 Difference]: Finished difference Result 281 states and 317 transitions. [2021-10-21 20:27:20,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 20:27:20,691 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-21 20:27:20,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:27:20,693 INFO L225 Difference]: With dead ends: 281 [2021-10-21 20:27:20,693 INFO L226 Difference]: Without dead ends: 279 [2021-10-21 20:27:20,694 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 187.3ms TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-10-21 20:27:20,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2021-10-21 20:27:20,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 107. [2021-10-21 20:27:20,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 97 states have (on average 1.2164948453608246) internal successors, (118), 106 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) [2021-10-21 20:27:20,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 118 transitions. [2021-10-21 20:27:20,703 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 118 transitions. Word has length 26 [2021-10-21 20:27:20,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:27:20,705 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 118 transitions. [2021-10-21 20:27:20,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 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) [2021-10-21 20:27:20,706 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 118 transitions. [2021-10-21 20:27:20,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-21 20:27:20,708 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:27:20,709 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:27:20,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-21 20:27:20,709 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-10-21 20:27:20,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:27:20,710 INFO L82 PathProgramCache]: Analyzing trace with hash -1587105397, now seen corresponding path program 1 times [2021-10-21 20:27:20,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:27:20,710 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527067574] [2021-10-21 20:27:20,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:27:20,711 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:27:20,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:27:20,885 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:27:20,885 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:27:20,885 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527067574] [2021-10-21 20:27:20,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527067574] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:27:20,886 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:27:20,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-21 20:27:20,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985276751] [2021-10-21 20:27:20,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 20:27:20,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:27:20,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 20:27:20,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:27:20,888 INFO L87 Difference]: Start difference. First operand 107 states and 118 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 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) [2021-10-21 20:27:21,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:27:21,478 INFO L93 Difference]: Finished difference Result 279 states and 315 transitions. [2021-10-21 20:27:21,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 20:27:21,482 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-21 20:27:21,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:27:21,484 INFO L225 Difference]: With dead ends: 279 [2021-10-21 20:27:21,484 INFO L226 Difference]: Without dead ends: 277 [2021-10-21 20:27:21,485 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 160.8ms TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-10-21 20:27:21,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2021-10-21 20:27:21,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 110. [2021-10-21 20:27:21,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 100 states have (on average 1.21) internal successors, (121), 109 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:27:21,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 121 transitions. [2021-10-21 20:27:21,494 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 121 transitions. Word has length 26 [2021-10-21 20:27:21,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:27:21,495 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 121 transitions. [2021-10-21 20:27:21,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 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) [2021-10-21 20:27:21,495 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 121 transitions. [2021-10-21 20:27:21,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-21 20:27:21,496 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:27:21,497 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:27:21,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-21 20:27:21,497 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-10-21 20:27:21,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:27:21,498 INFO L82 PathProgramCache]: Analyzing trace with hash 1023061451, now seen corresponding path program 1 times [2021-10-21 20:27:21,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:27:21,498 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298306974] [2021-10-21 20:27:21,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:27:21,498 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:27:21,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:27:21,544 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:27:21,545 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:27:21,545 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298306974] [2021-10-21 20:27:21,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298306974] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:27:21,545 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:27:21,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-21 20:27:21,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915860881] [2021-10-21 20:27:21,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 20:27:21,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:27:21,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 20:27:21,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:27:21,547 INFO L87 Difference]: Start difference. First operand 110 states and 121 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:27:21,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:27:21,618 INFO L93 Difference]: Finished difference Result 150 states and 169 transitions. [2021-10-21 20:27:21,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 20:27:21,619 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-10-21 20:27:21,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:27:21,621 INFO L225 Difference]: With dead ends: 150 [2021-10-21 20:27:21,621 INFO L226 Difference]: Without dead ends: 148 [2021-10-21 20:27:21,622 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.6ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-21 20:27:21,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-10-21 20:27:21,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 114. [2021-10-21 20:27:21,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 104 states have (on average 1.2115384615384615) internal successors, (126), 113 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:27:21,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 126 transitions. [2021-10-21 20:27:21,630 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 126 transitions. Word has length 31 [2021-10-21 20:27:21,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:27:21,630 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 126 transitions. [2021-10-21 20:27:21,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:27:21,630 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 126 transitions. [2021-10-21 20:27:21,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-21 20:27:21,632 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:27:21,632 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:27:21,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-21 20:27:21,632 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-10-21 20:27:21,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:27:21,633 INFO L82 PathProgramCache]: Analyzing trace with hash -1739082713, now seen corresponding path program 1 times [2021-10-21 20:27:21,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:27:21,633 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873565299] [2021-10-21 20:27:21,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:27:21,633 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:27:21,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:27:21,690 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-21 20:27:21,690 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:27:21,690 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873565299] [2021-10-21 20:27:21,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873565299] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:27:21,691 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739766834] [2021-10-21 20:27:21,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:27:21,691 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:27:21,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:27:21,695 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:27:21,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-21 20:27:21,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:27:21,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-21 20:27:21,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:27:22,071 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 40 treesize of output 28 [2021-10-21 20:27:22,075 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 25 treesize of output 13 [2021-10-21 20:27:22,114 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-21 20:27:22,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1739766834] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:27:22,115 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:27:22,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-10-21 20:27:22,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723295032] [2021-10-21 20:27:22,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 20:27:22,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:27:22,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 20:27:22,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:27:22,116 INFO L87 Difference]: Start difference. First operand 114 states and 126 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 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) [2021-10-21 20:27:22,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:27:22,258 INFO L93 Difference]: Finished difference Result 114 states and 126 transitions. [2021-10-21 20:27:22,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 20:27:22,259 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-10-21 20:27:22,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:27:22,259 INFO L225 Difference]: With dead ends: 114 [2021-10-21 20:27:22,260 INFO L226 Difference]: Without dead ends: 110 [2021-10-21 20:27:22,260 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 35.7ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:27:22,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-10-21 20:27:22,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2021-10-21 20:27:22,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 102 states have (on average 1.196078431372549) internal successors, (122), 109 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:27:22,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 122 transitions. [2021-10-21 20:27:22,270 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 122 transitions. Word has length 31 [2021-10-21 20:27:22,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:27:22,270 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 122 transitions. [2021-10-21 20:27:22,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 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) [2021-10-21 20:27:22,271 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 122 transitions. [2021-10-21 20:27:22,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-21 20:27:22,277 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:27:22,277 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:27:22,311 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-10-21 20:27:22,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-10-21 20:27:22,502 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-10-21 20:27:22,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:27:22,502 INFO L82 PathProgramCache]: Analyzing trace with hash 941856602, now seen corresponding path program 1 times [2021-10-21 20:27:22,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:27:22,503 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206964229] [2021-10-21 20:27:22,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:27:22,503 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:27:22,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:27:22,688 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:27:22,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:27:22,688 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206964229] [2021-10-21 20:27:22,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206964229] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:27:22,689 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438811887] [2021-10-21 20:27:22,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:27:22,689 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:27:22,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:27:22,694 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:27:22,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-21 20:27:22,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:27:22,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 33 conjunts are in the unsatisfiable core [2021-10-21 20:27:22,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:27:23,222 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 21 [2021-10-21 20:27:23,228 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 18 treesize of output 10 [2021-10-21 20:27:23,237 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:27:23,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438811887] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:27:23,238 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-21 20:27:23,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8] total 12 [2021-10-21 20:27:23,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941096916] [2021-10-21 20:27:23,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-21 20:27:23,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:27:23,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-21 20:27:23,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-10-21 20:27:23,240 INFO L87 Difference]: Start difference. First operand 110 states and 122 transitions. Second operand has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 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) [2021-10-21 20:27:23,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:27:23,718 INFO L93 Difference]: Finished difference Result 196 states and 230 transitions. [2021-10-21 20:27:23,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 20:27:23,718 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 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) Word has length 34 [2021-10-21 20:27:23,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:27:23,720 INFO L225 Difference]: With dead ends: 196 [2021-10-21 20:27:23,720 INFO L226 Difference]: Without dead ends: 194 [2021-10-21 20:27:23,721 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 206.7ms TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2021-10-21 20:27:23,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-10-21 20:27:23,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 118. [2021-10-21 20:27:23,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 110 states have (on average 1.190909090909091) internal successors, (131), 117 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:27:23,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 131 transitions. [2021-10-21 20:27:23,735 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 131 transitions. Word has length 34 [2021-10-21 20:27:23,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:27:23,735 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 131 transitions. [2021-10-21 20:27:23,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 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) [2021-10-21 20:27:23,736 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 131 transitions. [2021-10-21 20:27:23,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-21 20:27:23,736 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:27:23,737 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:27:23,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-21 20:27:23,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:27:23,959 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-10-21 20:27:23,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:27:23,960 INFO L82 PathProgramCache]: Analyzing trace with hash -1381613344, now seen corresponding path program 1 times [2021-10-21 20:27:23,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:27:23,960 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827002268] [2021-10-21 20:27:23,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:27:23,960 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:27:23,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:27:24,008 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:27:24,008 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:27:24,009 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827002268] [2021-10-21 20:27:24,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827002268] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:27:24,009 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:27:24,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-21 20:27:24,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910189070] [2021-10-21 20:27:24,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 20:27:24,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:27:24,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 20:27:24,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:27:24,011 INFO L87 Difference]: Start difference. First operand 118 states and 131 transitions. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 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) [2021-10-21 20:27:24,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:27:24,130 INFO L93 Difference]: Finished difference Result 228 states and 264 transitions. [2021-10-21 20:27:24,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 20:27:24,131 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 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) Word has length 36 [2021-10-21 20:27:24,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:27:24,133 INFO L225 Difference]: With dead ends: 228 [2021-10-21 20:27:24,133 INFO L226 Difference]: Without dead ends: 190 [2021-10-21 20:27:24,133 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 46.6ms TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:27:24,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-10-21 20:27:24,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 119. [2021-10-21 20:27:24,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 111 states have (on average 1.1891891891891893) internal successors, (132), 118 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:27:24,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 132 transitions. [2021-10-21 20:27:24,146 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 132 transitions. Word has length 36 [2021-10-21 20:27:24,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:27:24,147 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 132 transitions. [2021-10-21 20:27:24,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 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) [2021-10-21 20:27:24,147 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 132 transitions. [2021-10-21 20:27:24,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-21 20:27:24,148 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:27:24,148 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:27:24,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-21 20:27:24,149 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-10-21 20:27:24,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:27:24,149 INFO L82 PathProgramCache]: Analyzing trace with hash -165192449, now seen corresponding path program 1 times [2021-10-21 20:27:24,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:27:24,150 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197433273] [2021-10-21 20:27:24,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:27:24,150 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:27:24,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:27:24,278 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:27:24,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:27:24,279 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197433273] [2021-10-21 20:27:24,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197433273] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:27:24,281 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:27:24,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-21 20:27:24,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083155941] [2021-10-21 20:27:24,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 20:27:24,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:27:24,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 20:27:24,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:27:24,286 INFO L87 Difference]: Start difference. First operand 119 states and 132 transitions. Second operand has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:27:24,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:27:24,707 INFO L93 Difference]: Finished difference Result 159 states and 174 transitions. [2021-10-21 20:27:24,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 20:27:24,708 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2021-10-21 20:27:24,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:27:24,709 INFO L225 Difference]: With dead ends: 159 [2021-10-21 20:27:24,709 INFO L226 Difference]: Without dead ends: 157 [2021-10-21 20:27:24,710 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 133.6ms TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2021-10-21 20:27:24,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-10-21 20:27:24,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 122. [2021-10-21 20:27:24,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 114 states have (on average 1.1842105263157894) internal successors, (135), 121 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:27:24,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 135 transitions. [2021-10-21 20:27:24,720 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 135 transitions. Word has length 37 [2021-10-21 20:27:24,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:27:24,720 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 135 transitions. [2021-10-21 20:27:24,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:27:24,721 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 135 transitions. [2021-10-21 20:27:24,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-21 20:27:24,723 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:27:24,723 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:27:24,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-21 20:27:24,724 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-10-21 20:27:24,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:27:24,724 INFO L82 PathProgramCache]: Analyzing trace with hash 1468300417, now seen corresponding path program 1 times [2021-10-21 20:27:24,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:27:24,725 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817150366] [2021-10-21 20:27:24,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:27:24,725 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:27:24,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:27:24,812 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-21 20:27:24,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:27:24,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817150366] [2021-10-21 20:27:24,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817150366] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:27:24,815 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:27:24,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-21 20:27:24,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323514714] [2021-10-21 20:27:24,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-21 20:27:24,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:27:24,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-21 20:27:24,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-10-21 20:27:24,818 INFO L87 Difference]: Start difference. First operand 122 states and 135 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 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) [2021-10-21 20:27:25,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:27:25,140 INFO L93 Difference]: Finished difference Result 304 states and 370 transitions. [2021-10-21 20:27:25,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-21 20:27:25,141 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 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) Word has length 37 [2021-10-21 20:27:25,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:27:25,143 INFO L225 Difference]: With dead ends: 304 [2021-10-21 20:27:25,143 INFO L226 Difference]: Without dead ends: 266 [2021-10-21 20:27:25,144 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 178.1ms TimeCoverageRelationStatistics Valid=173, Invalid=427, Unknown=0, NotChecked=0, Total=600 [2021-10-21 20:27:25,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2021-10-21 20:27:25,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 135. [2021-10-21 20:27:25,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 127 states have (on average 1.220472440944882) internal successors, (155), 134 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:27:25,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 155 transitions. [2021-10-21 20:27:25,157 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 155 transitions. Word has length 37 [2021-10-21 20:27:25,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:27:25,157 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 155 transitions. [2021-10-21 20:27:25,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 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) [2021-10-21 20:27:25,157 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 155 transitions. [2021-10-21 20:27:25,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-21 20:27:25,158 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:27:25,158 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:27:25,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-10-21 20:27:25,158 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-10-21 20:27:25,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:27:25,159 INFO L82 PathProgramCache]: Analyzing trace with hash -351392901, now seen corresponding path program 1 times [2021-10-21 20:27:25,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:27:25,159 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948395197] [2021-10-21 20:27:25,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:27:25,159 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:27:25,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:27:25,293 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:27:25,293 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:27:25,293 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948395197] [2021-10-21 20:27:25,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948395197] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:27:25,294 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595739635] [2021-10-21 20:27:25,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:27:25,294 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:27:25,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:27:25,295 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:27:25,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-21 20:27:25,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:27:25,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-21 20:27:25,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:27:25,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:27:25,523 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2021-10-21 20:27:25,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:27:25,531 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2021-10-21 20:27:25,670 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 21 [2021-10-21 20:27:25,673 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 18 treesize of output 10 [2021-10-21 20:27:25,718 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:27:25,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [595739635] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:27:25,718 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:27:25,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 10 [2021-10-21 20:27:25,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918456768] [2021-10-21 20:27:25,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 20:27:25,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:27:25,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 20:27:25,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:27:25,720 INFO L87 Difference]: Start difference. First operand 135 states and 155 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 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) [2021-10-21 20:27:26,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:27:26,131 INFO L93 Difference]: Finished difference Result 288 states and 334 transitions. [2021-10-21 20:27:26,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 20:27:26,131 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 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) Word has length 37 [2021-10-21 20:27:26,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:27:26,132 INFO L225 Difference]: With dead ends: 288 [2021-10-21 20:27:26,132 INFO L226 Difference]: Without dead ends: 189 [2021-10-21 20:27:26,133 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 35 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 131.4ms TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-21 20:27:26,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2021-10-21 20:27:26,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 146. [2021-10-21 20:27:26,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 138 states have (on average 1.210144927536232) internal successors, (167), 145 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:27:26,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 167 transitions. [2021-10-21 20:27:26,145 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 167 transitions. Word has length 37 [2021-10-21 20:27:26,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:27:26,145 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 167 transitions. [2021-10-21 20:27:26,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 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) [2021-10-21 20:27:26,146 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 167 transitions. [2021-10-21 20:27:26,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-21 20:27:26,146 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:27:26,146 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:27:26,183 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-21 20:27:26,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-10-21 20:27:26,374 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-10-21 20:27:26,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:27:26,374 INFO L82 PathProgramCache]: Analyzing trace with hash -2098084636, now seen corresponding path program 1 times [2021-10-21 20:27:26,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:27:26,374 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082143499] [2021-10-21 20:27:26,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:27:26,375 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:27:26,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:27:26,479 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:27:26,480 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:27:26,480 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082143499] [2021-10-21 20:27:26,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082143499] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:27:26,480 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277930862] [2021-10-21 20:27:26,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:27:26,480 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:27:26,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:27:26,481 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:27:26,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-21 20:27:26,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:27:26,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-21 20:27:26,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:27:26,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:27:26,713 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2021-10-21 20:27:26,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:27:26,719 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2021-10-21 20:27:26,951 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 21 [2021-10-21 20:27:26,954 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 18 treesize of output 10 [2021-10-21 20:27:26,990 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:27:26,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1277930862] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:27:26,991 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:27:26,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 9 [2021-10-21 20:27:26,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144866254] [2021-10-21 20:27:26,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-21 20:27:26,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:27:26,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-21 20:27:26,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-21 20:27:26,992 INFO L87 Difference]: Start difference. First operand 146 states and 167 transitions. Second operand has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 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) [2021-10-21 20:27:27,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:27:27,155 INFO L93 Difference]: Finished difference Result 234 states and 272 transitions. [2021-10-21 20:27:27,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 20:27:27,156 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 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 40 [2021-10-21 20:27:27,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:27:27,157 INFO L225 Difference]: With dead ends: 234 [2021-10-21 20:27:27,157 INFO L226 Difference]: Without dead ends: 178 [2021-10-21 20:27:27,159 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 55.2ms TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:27:27,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-10-21 20:27:27,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 159. [2021-10-21 20:27:27,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 151 states have (on average 1.1920529801324504) internal successors, (180), 158 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:27:27,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 180 transitions. [2021-10-21 20:27:27,171 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 180 transitions. Word has length 40 [2021-10-21 20:27:27,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:27:27,172 INFO L470 AbstractCegarLoop]: Abstraction has 159 states and 180 transitions. [2021-10-21 20:27:27,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 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) [2021-10-21 20:27:27,172 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 180 transitions. [2021-10-21 20:27:27,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-10-21 20:27:27,173 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:27:27,173 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:27:27,211 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-21 20:27:27,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:27:27,393 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-10-21 20:27:27,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:27:27,393 INFO L82 PathProgramCache]: Analyzing trace with hash -2108614639, now seen corresponding path program 1 times [2021-10-21 20:27:27,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:27:27,393 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5996872] [2021-10-21 20:27:27,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:27:27,393 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:27:27,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:27:27,472 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-21 20:27:27,472 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:27:27,473 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5996872] [2021-10-21 20:27:27,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5996872] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:27:27,473 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:27:27,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 20:27:27,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094232982] [2021-10-21 20:27:27,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 20:27:27,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:27:27,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 20:27:27,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:27:27,475 INFO L87 Difference]: Start difference. First operand 159 states and 180 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:27:27,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:27:27,587 INFO L93 Difference]: Finished difference Result 159 states and 180 transitions. [2021-10-21 20:27:27,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 20:27:27,587 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-10-21 20:27:27,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:27:27,588 INFO L225 Difference]: With dead ends: 159 [2021-10-21 20:27:27,588 INFO L226 Difference]: Without dead ends: 124 [2021-10-21 20:27:27,589 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.3ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:27:27,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-10-21 20:27:27,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2021-10-21 20:27:27,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 117 states have (on average 1.2136752136752136) internal successors, (142), 123 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:27:27,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 142 transitions. [2021-10-21 20:27:27,598 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 142 transitions. Word has length 43 [2021-10-21 20:27:27,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:27:27,599 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 142 transitions. [2021-10-21 20:27:27,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:27:27,601 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 142 transitions. [2021-10-21 20:27:27,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-10-21 20:27:27,602 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:27:27,602 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:27:27,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-10-21 20:27:27,602 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-10-21 20:27:27,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:27:27,603 INFO L82 PathProgramCache]: Analyzing trace with hash -1726610926, now seen corresponding path program 2 times [2021-10-21 20:27:27,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:27:27,604 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977325061] [2021-10-21 20:27:27,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:27:27,604 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:27:27,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:27:28,037 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:27:28,037 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:27:28,037 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977325061] [2021-10-21 20:27:28,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977325061] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:27:28,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077941614] [2021-10-21 20:27:28,038 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 20:27:28,038 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:27:28,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:27:28,039 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:27:28,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-21 20:27:28,238 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 20:27:28,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 20:27:28,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 47 conjunts are in the unsatisfiable core [2021-10-21 20:27:28,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:27:28,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2021-10-21 20:27:28,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:27:28,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2021-10-21 20:27:28,407 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-10-21 20:27:28,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-10-21 20:27:28,492 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-10-21 20:27:28,493 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2021-10-21 20:27:28,512 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-10-21 20:27:28,513 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19 [2021-10-21 20:27:28,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:27:28,633 INFO L354 Elim1Store]: treesize reduction 88, result has 14.6 percent of original size [2021-10-21 20:27:28,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 66 [2021-10-21 20:27:28,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:27:28,638 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 74 [2021-10-21 20:27:29,237 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-21 20:27:29,237 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 65 [2021-10-21 20:27:29,580 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-10-21 20:27:29,583 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 63 treesize of output 29 [2021-10-21 20:27:29,593 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:27:29,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1077941614] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:27:29,594 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:27:29,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 22 [2021-10-21 20:27:29,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777904994] [2021-10-21 20:27:29,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-21 20:27:29,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:27:29,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-21 20:27:29,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=404, Unknown=0, NotChecked=0, Total=462 [2021-10-21 20:27:29,599 INFO L87 Difference]: Start difference. First operand 124 states and 142 transitions. Second operand has 22 states, 22 states have (on average 3.6363636363636362) internal successors, (80), 22 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) [2021-10-21 20:27:33,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:27:33,671 INFO L93 Difference]: Finished difference Result 230 states and 263 transitions. [2021-10-21 20:27:33,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-21 20:27:33,672 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.6363636363636362) internal successors, (80), 22 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) Word has length 43 [2021-10-21 20:27:33,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:27:33,673 INFO L225 Difference]: With dead ends: 230 [2021-10-21 20:27:33,673 INFO L226 Difference]: Without dead ends: 228 [2021-10-21 20:27:33,673 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1324.3ms TimeCoverageRelationStatistics Valid=221, Invalid=771, Unknown=0, NotChecked=0, Total=992 [2021-10-21 20:27:33,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2021-10-21 20:27:33,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 135. [2021-10-21 20:27:33,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 128 states have (on average 1.203125) internal successors, (154), 134 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:27:33,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 154 transitions. [2021-10-21 20:27:33,683 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 154 transitions. Word has length 43 [2021-10-21 20:27:33,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:27:33,683 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 154 transitions. [2021-10-21 20:27:33,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.6363636363636362) internal successors, (80), 22 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) [2021-10-21 20:27:33,683 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 154 transitions. [2021-10-21 20:27:33,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-10-21 20:27:33,683 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:27:33,683 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:27:33,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-21 20:27:33,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:27:33,884 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-10-21 20:27:33,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:27:33,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1520256660, now seen corresponding path program 1 times [2021-10-21 20:27:33,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:27:33,885 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269476057] [2021-10-21 20:27:33,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:27:33,885 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:27:33,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:27:34,296 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:27:34,296 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:27:34,296 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269476057] [2021-10-21 20:27:34,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269476057] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:27:34,296 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875623741] [2021-10-21 20:27:34,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:27:34,296 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:27:34,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:27:34,297 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:27:34,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-21 20:27:34,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:27:34,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 45 conjunts are in the unsatisfiable core [2021-10-21 20:27:34,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:27:34,623 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2021-10-21 20:27:34,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:27:34,680 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2021-10-21 20:27:34,726 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-10-21 20:27:34,727 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-10-21 20:27:34,815 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-10-21 20:27:34,816 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19 [2021-10-21 20:27:34,832 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-10-21 20:27:34,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2021-10-21 20:27:34,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:27:34,959 INFO L354 Elim1Store]: treesize reduction 88, result has 14.6 percent of original size [2021-10-21 20:27:34,960 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 66 [2021-10-21 20:27:34,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:27:34,967 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 74 [2021-10-21 20:27:35,619 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-21 20:27:35,620 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 65 [2021-10-21 20:27:35,964 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-10-21 20:27:35,965 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 63 treesize of output 29 [2021-10-21 20:27:35,971 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:27:35,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [875623741] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:27:35,972 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:27:35,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 22 [2021-10-21 20:27:35,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234237620] [2021-10-21 20:27:35,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-21 20:27:35,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:27:35,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-21 20:27:35,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=404, Unknown=0, NotChecked=0, Total=462 [2021-10-21 20:27:35,975 INFO L87 Difference]: Start difference. First operand 135 states and 154 transitions. Second operand has 22 states, 22 states have (on average 3.6363636363636362) internal successors, (80), 22 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) [2021-10-21 20:27:39,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:27:39,501 INFO L93 Difference]: Finished difference Result 228 states and 261 transitions. [2021-10-21 20:27:39,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-21 20:27:39,501 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.6363636363636362) internal successors, (80), 22 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) Word has length 43 [2021-10-21 20:27:39,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:27:39,503 INFO L225 Difference]: With dead ends: 228 [2021-10-21 20:27:39,503 INFO L226 Difference]: Without dead ends: 226 [2021-10-21 20:27:39,504 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1126.5ms TimeCoverageRelationStatistics Valid=221, Invalid=771, Unknown=0, NotChecked=0, Total=992 [2021-10-21 20:27:39,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-10-21 20:27:39,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 142. [2021-10-21 20:27:39,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 135 states have (on average 1.1925925925925926) internal successors, (161), 141 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:27:39,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 161 transitions. [2021-10-21 20:27:39,523 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 161 transitions. Word has length 43 [2021-10-21 20:27:39,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:27:39,524 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 161 transitions. [2021-10-21 20:27:39,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.6363636363636362) internal successors, (80), 22 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) [2021-10-21 20:27:39,524 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 161 transitions. [2021-10-21 20:27:39,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-10-21 20:27:39,525 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:27:39,525 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:27:39,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-21 20:27:39,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:27:39,730 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-10-21 20:27:39,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:27:39,731 INFO L82 PathProgramCache]: Analyzing trace with hash -1525230867, now seen corresponding path program 2 times [2021-10-21 20:27:39,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:27:39,731 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129845812] [2021-10-21 20:27:39,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:27:39,731 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:27:39,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:27:39,850 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:27:39,850 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:27:39,851 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129845812] [2021-10-21 20:27:39,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129845812] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:27:39,851 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96609640] [2021-10-21 20:27:39,851 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 20:27:39,852 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:27:39,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:27:39,853 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:27:39,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-21 20:27:40,166 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-21 20:27:40,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 20:27:40,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-21 20:27:40,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:27:40,345 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2021-10-21 20:27:40,348 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 22 treesize of output 10 [2021-10-21 20:27:40,366 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-21 20:27:40,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [96609640] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:27:40,366 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-21 20:27:40,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2021-10-21 20:27:40,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946055191] [2021-10-21 20:27:40,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 20:27:40,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:27:40,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 20:27:40,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-10-21 20:27:40,368 INFO L87 Difference]: Start difference. First operand 142 states and 161 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:27:40,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:27:40,548 INFO L93 Difference]: Finished difference Result 142 states and 161 transitions. [2021-10-21 20:27:40,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 20:27:40,549 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 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 [2021-10-21 20:27:40,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:27:40,550 INFO L225 Difference]: With dead ends: 142 [2021-10-21 20:27:40,550 INFO L226 Difference]: Without dead ends: 140 [2021-10-21 20:27:40,550 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 125.9ms TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2021-10-21 20:27:40,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-10-21 20:27:40,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2021-10-21 20:27:40,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 134 states have (on average 1.1865671641791045) internal successors, (159), 139 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:27:40,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 159 transitions. [2021-10-21 20:27:40,562 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 159 transitions. Word has length 46 [2021-10-21 20:27:40,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:27:40,562 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 159 transitions. [2021-10-21 20:27:40,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:27:40,562 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 159 transitions. [2021-10-21 20:27:40,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-10-21 20:27:40,562 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:27:40,563 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:27:40,586 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-21 20:27:40,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:27:40,766 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-10-21 20:27:40,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:27:40,767 INFO L82 PathProgramCache]: Analyzing trace with hash -931773474, now seen corresponding path program 1 times [2021-10-21 20:27:40,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:27:40,767 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859799975] [2021-10-21 20:27:40,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:27:40,768 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:27:40,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:27:41,671 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:27:41,671 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:27:41,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859799975] [2021-10-21 20:27:41,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859799975] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:27:41,672 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615212314] [2021-10-21 20:27:41,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:27:41,672 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:27:41,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:27:41,673 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:27:41,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-21 20:27:42,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:27:42,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 76 conjunts are in the unsatisfiable core [2021-10-21 20:27:42,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:27:42,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2021-10-21 20:27:42,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:27:42,183 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2021-10-21 20:27:42,202 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-10-21 20:27:42,203 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-10-21 20:27:42,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:27:42,215 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2021-10-21 20:27:42,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:27:42,330 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-10-21 20:27:42,335 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 59 [2021-10-21 20:27:42,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:27:42,347 INFO L354 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2021-10-21 20:27:42,348 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 59 [2021-10-21 20:27:42,490 INFO L354 Elim1Store]: treesize reduction 48, result has 36.0 percent of original size [2021-10-21 20:27:42,490 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 41 [2021-10-21 20:27:42,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:27:42,668 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-21 20:27:42,669 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 123 treesize of output 101 [2021-10-21 20:27:42,694 INFO L354 Elim1Store]: treesize reduction 36, result has 32.1 percent of original size [2021-10-21 20:27:42,695 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 108 treesize of output 112 [2021-10-21 20:27:42,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:27:42,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:27:42,719 INFO L354 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2021-10-21 20:27:42,719 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 100 treesize of output 94 [2021-10-21 20:27:42,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:27:42,960 INFO L354 Elim1Store]: treesize reduction 72, result has 23.4 percent of original size [2021-10-21 20:27:42,960 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 119 treesize of output 115 [2021-10-21 20:27:42,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:27:42,969 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-21 20:27:43,007 INFO L354 Elim1Store]: treesize reduction 206, result has 21.1 percent of original size [2021-10-21 20:27:43,008 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 183 treesize of output 195 [2021-10-21 20:27:45,211 INFO L354 Elim1Store]: treesize reduction 190, result has 5.5 percent of original size [2021-10-21 20:27:45,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 12 new quantified variables, introduced 21 case distinctions, treesize of input 215 treesize of output 120 [2021-10-21 20:27:45,266 INFO L354 Elim1Store]: treesize reduction 194, result has 3.5 percent of original size [2021-10-21 20:27:45,267 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 10 new quantified variables, introduced 28 case distinctions, treesize of input 85 treesize of output 61 [2021-10-21 20:27:45,280 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:27:45,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1615212314] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:27:45,281 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:27:45,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 25 [2021-10-21 20:27:45,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015771012] [2021-10-21 20:27:45,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-21 20:27:45,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:27:45,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-21 20:27:45,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2021-10-21 20:27:45,283 INFO L87 Difference]: Start difference. First operand 140 states and 159 transitions. Second operand has 25 states, 25 states have (on average 3.56) internal successors, (89), 25 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:27:50,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:27:50,257 INFO L93 Difference]: Finished difference Result 245 states and 291 transitions. [2021-10-21 20:27:50,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-21 20:27:50,258 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.56) internal successors, (89), 25 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-10-21 20:27:50,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:27:50,260 INFO L225 Difference]: With dead ends: 245 [2021-10-21 20:27:50,260 INFO L226 Difference]: Without dead ends: 243 [2021-10-21 20:27:50,261 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 3031.3ms TimeCoverageRelationStatistics Valid=254, Invalid=936, Unknown=0, NotChecked=0, Total=1190 [2021-10-21 20:27:50,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-10-21 20:27:50,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 143. [2021-10-21 20:27:50,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 137 states have (on average 1.1824817518248176) internal successors, (162), 142 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:27:50,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 162 transitions. [2021-10-21 20:27:50,281 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 162 transitions. Word has length 46 [2021-10-21 20:27:50,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:27:50,281 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 162 transitions. [2021-10-21 20:27:50,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.56) internal successors, (89), 25 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:27:50,282 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 162 transitions. [2021-10-21 20:27:50,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-10-21 20:27:50,283 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:27:50,283 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:27:50,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-21 20:27:50,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:27:50,494 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-10-21 20:27:50,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:27:50,494 INFO L82 PathProgramCache]: Analyzing trace with hash -458074583, now seen corresponding path program 1 times [2021-10-21 20:27:50,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:27:50,495 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231223837] [2021-10-21 20:27:50,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:27:50,495 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:27:50,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:27:51,177 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:27:51,178 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:27:51,178 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231223837] [2021-10-21 20:27:51,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231223837] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:27:51,178 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827315735] [2021-10-21 20:27:51,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:27:51,178 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:27:51,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:27:51,179 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:27:51,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-21 20:27:51,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:27:51,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 53 conjunts are in the unsatisfiable core [2021-10-21 20:27:51,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:27:51,759 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2021-10-21 20:27:51,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:27:51,816 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2021-10-21 20:27:51,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:27:51,823 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2021-10-21 20:27:51,891 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-10-21 20:27:51,892 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-10-21 20:27:51,973 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-10-21 20:27:51,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 20 [2021-10-21 20:27:51,988 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-10-21 20:27:51,988 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2021-10-21 20:27:51,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:27:52,000 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 20 [2021-10-21 20:27:52,129 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-21 20:27:52,158 INFO L354 Elim1Store]: treesize reduction 88, result has 14.6 percent of original size [2021-10-21 20:27:52,159 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 73 treesize of output 79 [2021-10-21 20:27:52,165 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-21 20:27:52,190 INFO L354 Elim1Store]: treesize reduction 144, result has 14.8 percent of original size [2021-10-21 20:27:52,191 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 97 treesize of output 103 [2021-10-21 20:27:53,264 INFO L354 Elim1Store]: treesize reduction 126, result has 2.3 percent of original size [2021-10-21 20:27:53,264 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 122 treesize of output 69 [2021-10-21 20:27:53,294 INFO L354 Elim1Store]: treesize reduction 86, result has 3.4 percent of original size [2021-10-21 20:27:53,294 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 54 treesize of output 39 [2021-10-21 20:27:53,347 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:27:53,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1827315735] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:27:53,347 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:27:53,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 11] total 26 [2021-10-21 20:27:53,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613209895] [2021-10-21 20:27:53,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-21 20:27:53,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:27:53,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-21 20:27:53,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=589, Unknown=0, NotChecked=0, Total=650 [2021-10-21 20:27:53,350 INFO L87 Difference]: Start difference. First operand 143 states and 162 transitions. Second operand has 26 states, 26 states have (on average 3.4615384615384617) internal successors, (90), 26 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:28:02,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:28:02,796 INFO L93 Difference]: Finished difference Result 373 states and 433 transitions. [2021-10-21 20:28:02,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-21 20:28:02,805 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.4615384615384617) internal successors, (90), 26 states have internal predecessors, (90), 0 states have call successors, (0), 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 [2021-10-21 20:28:02,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:28:02,807 INFO L225 Difference]: With dead ends: 373 [2021-10-21 20:28:02,808 INFO L226 Difference]: Without dead ends: 288 [2021-10-21 20:28:02,809 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 537 ImplicationChecksByTransitivity, 5304.9ms TimeCoverageRelationStatistics Valid=407, Invalid=2245, Unknown=0, NotChecked=0, Total=2652 [2021-10-21 20:28:02,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2021-10-21 20:28:02,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 171. [2021-10-21 20:28:02,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 165 states have (on average 1.1636363636363636) internal successors, (192), 170 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:28:02,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 192 transitions. [2021-10-21 20:28:02,829 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 192 transitions. Word has length 46 [2021-10-21 20:28:02,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:28:02,829 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 192 transitions. [2021-10-21 20:28:02,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.4615384615384617) internal successors, (90), 26 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:28:02,830 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 192 transitions. [2021-10-21 20:28:02,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-10-21 20:28:02,830 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:28:02,830 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:28:02,870 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-21 20:28:03,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-10-21 20:28:03,046 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-10-21 20:28:03,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:28:03,046 INFO L82 PathProgramCache]: Analyzing trace with hash -1687612276, now seen corresponding path program 1 times [2021-10-21 20:28:03,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:28:03,046 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887018267] [2021-10-21 20:28:03,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:28:03,047 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:28:03,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:28:03,271 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-21 20:28:03,271 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:28:03,271 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887018267] [2021-10-21 20:28:03,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887018267] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:28:03,271 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616732040] [2021-10-21 20:28:03,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:28:03,271 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:28:03,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:28:03,272 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:28:03,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-21 20:28:03,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:28:03,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-21 20:28:03,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:28:03,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:03,965 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2021-10-21 20:28:04,140 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-21 20:28:04,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [616732040] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:28:04,141 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:28:04,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 8] total 21 [2021-10-21 20:28:04,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834230609] [2021-10-21 20:28:04,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-21 20:28:04,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:28:04,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-21 20:28:04,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=373, Unknown=0, NotChecked=0, Total=420 [2021-10-21 20:28:04,142 INFO L87 Difference]: Start difference. First operand 171 states and 192 transitions. Second operand has 21 states, 21 states have (on average 4.285714285714286) internal successors, (90), 21 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:28:04,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:28:04,674 INFO L93 Difference]: Finished difference Result 264 states and 319 transitions. [2021-10-21 20:28:04,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 20:28:04,675 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.285714285714286) internal successors, (90), 21 states have internal predecessors, (90), 0 states have call successors, (0), 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 49 [2021-10-21 20:28:04,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:28:04,676 INFO L225 Difference]: With dead ends: 264 [2021-10-21 20:28:04,677 INFO L226 Difference]: Without dead ends: 206 [2021-10-21 20:28:04,677 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 311.5ms TimeCoverageRelationStatistics Valid=127, Invalid=629, Unknown=0, NotChecked=0, Total=756 [2021-10-21 20:28:04,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-10-21 20:28:04,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 158. [2021-10-21 20:28:04,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 152 states have (on average 1.1644736842105263) internal successors, (177), 157 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:28:04,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 177 transitions. [2021-10-21 20:28:04,692 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 177 transitions. Word has length 49 [2021-10-21 20:28:04,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:28:04,692 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 177 transitions. [2021-10-21 20:28:04,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.285714285714286) internal successors, (90), 21 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:28:04,692 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 177 transitions. [2021-10-21 20:28:04,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-10-21 20:28:04,693 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:28:04,693 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:28:04,714 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-21 20:28:04,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:28:04,894 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-10-21 20:28:04,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:28:04,894 INFO L82 PathProgramCache]: Analyzing trace with hash -745453151, now seen corresponding path program 1 times [2021-10-21 20:28:04,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:28:04,894 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098417425] [2021-10-21 20:28:04,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:28:04,895 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:28:04,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:28:05,011 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-21 20:28:05,011 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:28:05,012 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098417425] [2021-10-21 20:28:05,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098417425] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:28:05,012 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720019455] [2021-10-21 20:28:05,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:28:05,012 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:28:05,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:28:05,013 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:28:05,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-21 20:28:05,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:28:05,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 33 conjunts are in the unsatisfiable core [2021-10-21 20:28:05,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:28:06,288 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 32 treesize of output 24 [2021-10-21 20:28:06,290 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 21 treesize of output 13 [2021-10-21 20:28:06,308 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-21 20:28:06,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720019455] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:28:06,309 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:28:06,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 17 [2021-10-21 20:28:06,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101030257] [2021-10-21 20:28:06,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-21 20:28:06,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:28:06,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-21 20:28:06,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2021-10-21 20:28:06,312 INFO L87 Difference]: Start difference. First operand 158 states and 177 transitions. Second operand has 17 states, 17 states have (on average 5.9411764705882355) internal successors, (101), 17 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:28:06,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:28:06,917 INFO L93 Difference]: Finished difference Result 197 states and 230 transitions. [2021-10-21 20:28:06,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-21 20:28:06,917 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.9411764705882355) internal successors, (101), 17 states have internal predecessors, (101), 0 states have call successors, (0), 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 57 [2021-10-21 20:28:06,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:28:06,919 INFO L225 Difference]: With dead ends: 197 [2021-10-21 20:28:06,919 INFO L226 Difference]: Without dead ends: 187 [2021-10-21 20:28:06,920 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 333.2ms TimeCoverageRelationStatistics Valid=150, Invalid=552, Unknown=0, NotChecked=0, Total=702 [2021-10-21 20:28:06,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2021-10-21 20:28:06,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 160. [2021-10-21 20:28:06,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 154 states have (on average 1.1623376623376624) internal successors, (179), 159 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:28:06,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 179 transitions. [2021-10-21 20:28:06,938 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 179 transitions. Word has length 57 [2021-10-21 20:28:06,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:28:06,939 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 179 transitions. [2021-10-21 20:28:06,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.9411764705882355) internal successors, (101), 17 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:28:06,939 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 179 transitions. [2021-10-21 20:28:06,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-10-21 20:28:06,940 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:28:06,940 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:28:06,980 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-21 20:28:07,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:28:07,162 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-10-21 20:28:07,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:28:07,163 INFO L82 PathProgramCache]: Analyzing trace with hash 1212626519, now seen corresponding path program 1 times [2021-10-21 20:28:07,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:28:07,163 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422978518] [2021-10-21 20:28:07,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:28:07,163 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:28:07,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:28:07,371 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-21 20:28:07,371 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:28:07,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422978518] [2021-10-21 20:28:07,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422978518] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:28:07,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407273626] [2021-10-21 20:28:07,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:28:07,372 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:28:07,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:28:07,373 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:28:07,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-21 20:28:08,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:28:08,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 32 conjunts are in the unsatisfiable core [2021-10-21 20:28:08,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:28:08,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:08,102 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2021-10-21 20:28:08,363 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 8 [2021-10-21 20:28:08,401 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-21 20:28:08,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [407273626] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:28:08,401 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:28:08,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 8] total 21 [2021-10-21 20:28:08,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429146105] [2021-10-21 20:28:08,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-21 20:28:08,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:28:08,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-21 20:28:08,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=375, Unknown=0, NotChecked=0, Total=420 [2021-10-21 20:28:08,403 INFO L87 Difference]: Start difference. First operand 160 states and 179 transitions. Second operand has 21 states, 21 states have (on average 5.619047619047619) internal successors, (118), 21 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) [2021-10-21 20:28:09,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:28:09,248 INFO L93 Difference]: Finished difference Result 253 states and 306 transitions. [2021-10-21 20:28:09,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-21 20:28:09,249 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.619047619047619) internal successors, (118), 21 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 63 [2021-10-21 20:28:09,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:28:09,251 INFO L225 Difference]: With dead ends: 253 [2021-10-21 20:28:09,251 INFO L226 Difference]: Without dead ends: 208 [2021-10-21 20:28:09,251 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 427.2ms TimeCoverageRelationStatistics Valid=217, Invalid=905, Unknown=0, NotChecked=0, Total=1122 [2021-10-21 20:28:09,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-10-21 20:28:09,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 162. [2021-10-21 20:28:09,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 156 states have (on average 1.1602564102564104) internal successors, (181), 161 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:28:09,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 181 transitions. [2021-10-21 20:28:09,271 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 181 transitions. Word has length 63 [2021-10-21 20:28:09,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:28:09,272 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 181 transitions. [2021-10-21 20:28:09,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.619047619047619) internal successors, (118), 21 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) [2021-10-21 20:28:09,272 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 181 transitions. [2021-10-21 20:28:09,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-10-21 20:28:09,273 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:28:09,273 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:28:09,313 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-10-21 20:28:09,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-10-21 20:28:09,502 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-10-21 20:28:09,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:28:09,502 INFO L82 PathProgramCache]: Analyzing trace with hash 2020719924, now seen corresponding path program 3 times [2021-10-21 20:28:09,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:28:09,502 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883998409] [2021-10-21 20:28:09,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:28:09,503 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:28:09,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:28:10,582 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:28:10,583 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:28:10,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883998409] [2021-10-21 20:28:10,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883998409] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:28:10,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617144964] [2021-10-21 20:28:10,583 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 20:28:10,583 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:28:10,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:28:10,588 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:28:10,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-21 20:28:11,284 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-21 20:28:11,285 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 20:28:11,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 71 conjunts are in the unsatisfiable core [2021-10-21 20:28:11,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:28:11,341 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2021-10-21 20:28:11,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:11,401 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2021-10-21 20:28:11,443 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-10-21 20:28:11,444 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-10-21 20:28:11,549 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-10-21 20:28:11,549 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2021-10-21 20:28:11,571 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-10-21 20:28:11,571 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19 [2021-10-21 20:28:11,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:11,718 INFO L354 Elim1Store]: treesize reduction 88, result has 14.6 percent of original size [2021-10-21 20:28:11,719 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 70 treesize of output 76 [2021-10-21 20:28:11,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:11,725 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 94 [2021-10-21 20:28:11,893 INFO L354 Elim1Store]: treesize reduction 12, result has 65.7 percent of original size [2021-10-21 20:28:11,894 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 35 [2021-10-21 20:28:12,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:12,112 INFO L354 Elim1Store]: treesize reduction 244, result has 9.6 percent of original size [2021-10-21 20:28:12,112 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 133 treesize of output 106 [2021-10-21 20:28:12,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:12,124 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-10-21 20:28:12,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 109 [2021-10-21 20:28:12,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:12,307 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-21 20:28:12,414 INFO L354 Elim1Store]: treesize reduction 250, result has 27.3 percent of original size [2021-10-21 20:28:12,415 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 133 treesize of output 184 [2021-10-21 20:28:12,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:12,427 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-21 20:28:12,475 INFO L354 Elim1Store]: treesize reduction 190, result has 20.2 percent of original size [2021-10-21 20:28:12,475 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 254 treesize of output 253 [2021-10-21 20:29:01,485 INFO L354 Elim1Store]: treesize reduction 149, result has 9.7 percent of original size [2021-10-21 20:29:01,485 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 15 case distinctions, treesize of input 257 treesize of output 218 [2021-10-21 20:29:16,529 INFO L354 Elim1Store]: treesize reduction 132, result has 38.0 percent of original size [2021-10-21 20:29:16,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 11 new quantified variables, introduced 28 case distinctions, treesize of input 148 treesize of output 153 [2021-10-21 20:29:16,731 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 8 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:29:16,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617144964] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:29:16,731 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:29:16,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 15] total 32 [2021-10-21 20:29:16,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830504742] [2021-10-21 20:29:16,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-10-21 20:29:16,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:29:16,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-10-21 20:29:16,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=905, Unknown=0, NotChecked=0, Total=992 [2021-10-21 20:29:16,735 INFO L87 Difference]: Start difference. First operand 162 states and 181 transitions. Second operand has 32 states, 32 states have (on average 3.75) internal successors, (120), 32 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:10,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:30:10,048 INFO L93 Difference]: Finished difference Result 240 states and 270 transitions. [2021-10-21 20:30:10,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-21 20:30:10,048 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.75) internal successors, (120), 32 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-10-21 20:30:10,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:30:10,050 INFO L225 Difference]: With dead ends: 240 [2021-10-21 20:30:10,050 INFO L226 Difference]: Without dead ends: 238 [2021-10-21 20:30:10,051 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 55 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 385 ImplicationChecksByTransitivity, 43863.6ms TimeCoverageRelationStatistics Valid=500, Invalid=2038, Unknown=12, NotChecked=0, Total=2550 [2021-10-21 20:30:10,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2021-10-21 20:30:10,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 173. [2021-10-21 20:30:10,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 167 states have (on average 1.155688622754491) internal successors, (193), 172 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:10,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 193 transitions. [2021-10-21 20:30:10,071 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 193 transitions. Word has length 63 [2021-10-21 20:30:10,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:30:10,072 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 193 transitions. [2021-10-21 20:30:10,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.75) internal successors, (120), 32 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:10,072 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 193 transitions. [2021-10-21 20:30:10,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-10-21 20:30:10,073 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:30:10,073 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:30:10,120 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-10-21 20:30:10,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-10-21 20:30:10,290 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-10-21 20:30:10,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:30:10,290 INFO L82 PathProgramCache]: Analyzing trace with hash 972620214, now seen corresponding path program 2 times [2021-10-21 20:30:10,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:30:10,291 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910983798] [2021-10-21 20:30:10,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:30:10,291 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:30:10,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:30:11,190 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 6 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:30:11,190 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:30:11,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910983798] [2021-10-21 20:30:11,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910983798] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:30:11,191 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573239495] [2021-10-21 20:30:11,191 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 20:30:11,191 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:30:11,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:30:11,192 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:30:11,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-21 20:30:12,279 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 20:30:12,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 20:30:12,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 70 conjunts are in the unsatisfiable core [2021-10-21 20:30:12,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:30:12,330 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2021-10-21 20:30:12,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:30:12,387 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2021-10-21 20:30:12,437 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-10-21 20:30:12,437 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-10-21 20:30:12,522 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-10-21 20:30:12,523 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19 [2021-10-21 20:30:12,551 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-10-21 20:30:12,552 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2021-10-21 20:30:12,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:30:12,696 INFO L354 Elim1Store]: treesize reduction 88, result has 14.6 percent of original size [2021-10-21 20:30:12,697 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 70 treesize of output 76 [2021-10-21 20:30:12,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:30:12,701 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 94 [2021-10-21 20:30:12,881 INFO L354 Elim1Store]: treesize reduction 84, result has 36.4 percent of original size [2021-10-21 20:30:12,881 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 65 [2021-10-21 20:30:13,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:30:13,120 INFO L354 Elim1Store]: treesize reduction 244, result has 9.6 percent of original size [2021-10-21 20:30:13,120 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 168 treesize of output 131 [2021-10-21 20:30:13,153 INFO L354 Elim1Store]: treesize reduction 86, result has 23.9 percent of original size [2021-10-21 20:30:13,153 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 153 treesize of output 159 [2021-10-21 20:30:13,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:30:13,175 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-10-21 20:30:13,175 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 144 treesize of output 135 [2021-10-21 20:30:13,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:30:13,459 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-21 20:30:13,527 INFO L354 Elim1Store]: treesize reduction 304, result has 11.6 percent of original size [2021-10-21 20:30:13,527 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 157 treesize of output 146 [2021-10-21 20:30:13,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:30:13,538 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-21 20:30:13,567 INFO L354 Elim1Store]: treesize reduction 200, result has 16.0 percent of original size [2021-10-21 20:30:13,567 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 265 treesize of output 274 [2021-10-21 20:30:16,440 INFO L354 Elim1Store]: treesize reduction 162, result has 1.8 percent of original size [2021-10-21 20:30:16,440 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 15 case distinctions, treesize of input 258 treesize of output 215 [2021-10-21 20:30:17,197 INFO L354 Elim1Store]: treesize reduction 161, result has 2.4 percent of original size [2021-10-21 20:30:17,197 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 11 new quantified variables, introduced 21 case distinctions, treesize of input 194 treesize of output 70 [2021-10-21 20:30:17,206 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 8 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:30:17,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573239495] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:30:17,207 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:30:17,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 15] total 33 [2021-10-21 20:30:17,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668271007] [2021-10-21 20:30:17,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-10-21 20:30:17,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:30:17,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-10-21 20:30:17,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=975, Unknown=0, NotChecked=0, Total=1056 [2021-10-21 20:30:17,209 INFO L87 Difference]: Start difference. First operand 173 states and 193 transitions. Second operand has 33 states, 33 states have (on average 3.6363636363636362) internal successors, (120), 33 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:31:10,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:31:10,854 INFO L93 Difference]: Finished difference Result 238 states and 268 transitions. [2021-10-21 20:31:10,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-21 20:31:10,854 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.6363636363636362) internal successors, (120), 33 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-10-21 20:31:10,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:31:10,856 INFO L225 Difference]: With dead ends: 238 [2021-10-21 20:31:10,856 INFO L226 Difference]: Without dead ends: 236 [2021-10-21 20:31:10,857 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 55 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 48315.8ms TimeCoverageRelationStatistics Valid=586, Invalid=2365, Unknown=19, NotChecked=0, Total=2970 [2021-10-21 20:31:10,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2021-10-21 20:31:10,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 180. [2021-10-21 20:31:10,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 174 states have (on average 1.1494252873563218) internal successors, (200), 179 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:31:10,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 200 transitions. [2021-10-21 20:31:10,883 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 200 transitions. Word has length 63 [2021-10-21 20:31:10,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:31:10,884 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 200 transitions. [2021-10-21 20:31:10,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.6363636363636362) internal successors, (120), 33 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:31:10,884 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 200 transitions. [2021-10-21 20:31:10,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-10-21 20:31:10,885 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:31:10,885 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:31:10,922 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-10-21 20:31:11,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-10-21 20:31:11,102 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-10-21 20:31:11,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:31:11,102 INFO L82 PathProgramCache]: Analyzing trace with hash 823689196, now seen corresponding path program 1 times [2021-10-21 20:31:11,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:31:11,103 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009823729] [2021-10-21 20:31:11,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:31:11,103 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:31:11,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:31:11,163 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-10-21 20:31:11,163 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:31:11,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009823729] [2021-10-21 20:31:11,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009823729] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:31:11,163 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:31:11,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 20:31:11,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075747662] [2021-10-21 20:31:11,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 20:31:11,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:31:11,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:31:11,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:31:11,166 INFO L87 Difference]: Start difference. First operand 180 states and 200 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:31:11,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:31:11,205 INFO L93 Difference]: Finished difference Result 227 states and 264 transitions. [2021-10-21 20:31:11,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:31:11,205 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 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 [2021-10-21 20:31:11,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:31:11,207 INFO L225 Difference]: With dead ends: 227 [2021-10-21 20:31:11,207 INFO L226 Difference]: Without dead ends: 182 [2021-10-21 20:31:11,209 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:31:11,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-10-21 20:31:11,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2021-10-21 20:31:11,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 176 states have (on average 1.1477272727272727) internal successors, (202), 181 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:31:11,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 202 transitions. [2021-10-21 20:31:11,241 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 202 transitions. Word has length 64 [2021-10-21 20:31:11,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:31:11,242 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 202 transitions. [2021-10-21 20:31:11,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:31:11,242 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 202 transitions. [2021-10-21 20:31:11,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-10-21 20:31:11,243 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:31:11,243 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:31:11,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-10-21 20:31:11,244 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-10-21 20:31:11,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:31:11,244 INFO L82 PathProgramCache]: Analyzing trace with hash 236883182, now seen corresponding path program 1 times [2021-10-21 20:31:11,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:31:11,245 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991167796] [2021-10-21 20:31:11,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:31:11,245 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:31:11,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:31:11,382 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-10-21 20:31:11,382 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:31:11,382 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991167796] [2021-10-21 20:31:11,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991167796] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:31:11,382 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:31:11,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-21 20:31:11,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079039728] [2021-10-21 20:31:11,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 20:31:11,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:31:11,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 20:31:11,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:31:11,385 INFO L87 Difference]: Start difference. First operand 182 states and 202 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:31:11,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:31:11,657 INFO L93 Difference]: Finished difference Result 240 states and 277 transitions. [2021-10-21 20:31:11,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 20:31:11,658 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 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 [2021-10-21 20:31:11,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:31:11,659 INFO L225 Difference]: With dead ends: 240 [2021-10-21 20:31:11,660 INFO L226 Difference]: Without dead ends: 212 [2021-10-21 20:31:11,660 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 175.3ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-10-21 20:31:11,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-10-21 20:31:11,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 162. [2021-10-21 20:31:11,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 157 states have (on average 1.10828025477707) internal successors, (174), 161 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:31:11,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 174 transitions. [2021-10-21 20:31:11,690 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 174 transitions. Word has length 64 [2021-10-21 20:31:11,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:31:11,691 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 174 transitions. [2021-10-21 20:31:11,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:31:11,691 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 174 transitions. [2021-10-21 20:31:11,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-10-21 20:31:11,692 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:31:11,692 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:31:11,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-10-21 20:31:11,693 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-10-21 20:31:11,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:31:11,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1011621244, now seen corresponding path program 2 times [2021-10-21 20:31:11,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:31:11,694 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761095653] [2021-10-21 20:31:11,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:31:11,694 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:31:11,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:31:14,861 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:31:14,861 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:31:14,861 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761095653] [2021-10-21 20:31:14,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761095653] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:31:14,861 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332388602] [2021-10-21 20:31:14,861 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 20:31:14,862 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:31:14,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:31:14,862 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:31:14,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-10-21 20:31:16,236 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 20:31:16,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 20:31:16,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 104 conjunts are in the unsatisfiable core [2021-10-21 20:31:16,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:31:16,253 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2021-10-21 20:31:16,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:31:16,273 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2021-10-21 20:31:16,289 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-10-21 20:31:16,289 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-10-21 20:31:16,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:31:16,300 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2021-10-21 20:31:16,391 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-21 20:31:16,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:31:16,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:31:16,404 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-10-21 20:31:16,404 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 82 treesize of output 85 [2021-10-21 20:31:16,407 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-21 20:31:16,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:31:16,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:31:16,418 INFO L354 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2021-10-21 20:31:16,418 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 98 treesize of output 101 [2021-10-21 20:31:16,554 INFO L354 Elim1Store]: treesize reduction 48, result has 36.0 percent of original size [2021-10-21 20:31:16,555 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 41 [2021-10-21 20:31:16,717 INFO L354 Elim1Store]: treesize reduction 100, result has 13.0 percent of original size [2021-10-21 20:31:16,718 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 120 treesize of output 98 [2021-10-21 20:31:16,759 INFO L354 Elim1Store]: treesize reduction 90, result has 28.6 percent of original size [2021-10-21 20:31:16,759 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 105 treesize of output 127 [2021-10-21 20:31:16,784 INFO L354 Elim1Store]: treesize reduction 132, result has 12.6 percent of original size [2021-10-21 20:31:16,784 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 115 treesize of output 106 [2021-10-21 20:31:17,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:31:17,047 INFO L354 Elim1Store]: treesize reduction 124, result has 15.1 percent of original size [2021-10-21 20:31:17,047 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 131 treesize of output 123 [2021-10-21 20:31:17,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:31:17,085 INFO L354 Elim1Store]: treesize reduction 240, result has 14.9 percent of original size [2021-10-21 20:31:17,085 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 205 treesize of output 214 [2021-10-21 20:31:17,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:31:17,373 INFO L354 Elim1Store]: treesize reduction 132, result has 36.8 percent of original size [2021-10-21 20:31:17,373 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 52 treesize of output 97 [2021-10-21 20:31:17,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:31:17,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:31:17,747 INFO L354 Elim1Store]: treesize reduction 216, result has 10.7 percent of original size [2021-10-21 20:31:17,748 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 12 case distinctions, treesize of input 287 treesize of output 182 [2021-10-21 20:31:17,790 INFO L354 Elim1Store]: treesize reduction 172, result has 19.2 percent of original size [2021-10-21 20:31:17,791 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 14 case distinctions, treesize of input 272 treesize of output 280 [2021-10-21 20:31:17,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:31:17,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:31:17,842 INFO L354 Elim1Store]: treesize reduction 312, result has 11.9 percent of original size [2021-10-21 20:31:17,842 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 262 treesize of output 261 [2021-10-21 20:31:18,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:31:18,268 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-21 20:31:18,372 INFO L354 Elim1Store]: treesize reduction 296, result has 13.7 percent of original size [2021-10-21 20:31:18,373 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 9 new quantified variables, introduced 21 case distinctions, treesize of input 257 treesize of output 192 [2021-10-21 20:31:18,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:31:18,386 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-21 20:31:18,488 INFO L354 Elim1Store]: treesize reduction 630, result has 12.9 percent of original size [2021-10-21 20:31:18,489 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 425 treesize of output 436 [2021-10-21 20:31:24,815 INFO L354 Elim1Store]: treesize reduction 527, result has 4.0 percent of original size [2021-10-21 20:31:24,816 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 1 disjoint index pairs (out of 55 index pairs), introduced 21 new quantified variables, introduced 55 case distinctions, treesize of input 493 treesize of output 214 [2021-10-21 20:31:24,971 INFO L354 Elim1Store]: treesize reduction 471, result has 2.1 percent of original size [2021-10-21 20:31:24,971 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 1 disjoint index pairs (out of 55 index pairs), introduced 15 new quantified variables, introduced 55 case distinctions, treesize of input 138 treesize of output 111 [2021-10-21 20:31:24,986 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 8 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:31:24,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332388602] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:31:24,986 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:31:24,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 16] total 35 [2021-10-21 20:31:24,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227179753] [2021-10-21 20:31:24,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-10-21 20:31:24,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:31:24,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-10-21 20:31:24,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1079, Unknown=0, NotChecked=0, Total=1190 [2021-10-21 20:31:24,989 INFO L87 Difference]: Start difference. First operand 162 states and 174 transitions. Second operand has 35 states, 35 states have (on average 3.5142857142857142) internal successors, (123), 35 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:34:20,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:34:20,006 INFO L93 Difference]: Finished difference Result 220 states and 242 transitions. [2021-10-21 20:34:20,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-21 20:34:20,007 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.5142857142857142) internal successors, (123), 35 states have internal predecessors, (123), 0 states have call successors, (0), 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 66 [2021-10-21 20:34:20,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:34:20,008 INFO L225 Difference]: With dead ends: 220 [2021-10-21 20:34:20,009 INFO L226 Difference]: Without dead ends: 218 [2021-10-21 20:34:20,010 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 56 SyntacticMatches, 4 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 498 ImplicationChecksByTransitivity, 50547.1ms TimeCoverageRelationStatistics Valid=614, Invalid=2676, Unknown=16, NotChecked=0, Total=3306 [2021-10-21 20:34:20,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-10-21 20:34:20,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 155. [2021-10-21 20:34:20,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 150 states have (on average 1.1133333333333333) internal successors, (167), 154 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:34:20,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 167 transitions. [2021-10-21 20:34:20,032 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 167 transitions. Word has length 66 [2021-10-21 20:34:20,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:34:20,032 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 167 transitions. [2021-10-21 20:34:20,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.5142857142857142) internal successors, (123), 35 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:34:20,033 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 167 transitions. [2021-10-21 20:34:20,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-10-21 20:34:20,033 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:34:20,034 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:34:20,062 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2021-10-21 20:34:20,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-10-21 20:34:20,236 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-10-21 20:34:20,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:34:20,237 INFO L82 PathProgramCache]: Analyzing trace with hash 1485320135, now seen corresponding path program 2 times [2021-10-21 20:34:20,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:34:20,237 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243702255] [2021-10-21 20:34:20,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:34:20,237 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:34:20,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:34:22,342 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 6 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:34:22,343 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:34:22,343 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243702255] [2021-10-21 20:34:22,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243702255] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:34:22,343 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554015072] [2021-10-21 20:34:22,343 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 20:34:22,343 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:34:22,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:34:22,344 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:34:22,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-10-21 20:34:24,066 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 20:34:24,066 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 20:34:24,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 107 conjunts are in the unsatisfiable core [2021-10-21 20:34:24,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:34:24,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2021-10-21 20:34:24,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:34:24,236 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2021-10-21 20:34:24,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:34:24,241 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2021-10-21 20:34:24,329 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-10-21 20:34:24,329 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-10-21 20:34:24,502 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-10-21 20:34:24,502 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2021-10-21 20:34:24,521 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-10-21 20:34:24,522 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 20 [2021-10-21 20:34:24,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:34:24,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 20 [2021-10-21 20:34:24,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:34:24,679 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-21 20:34:24,704 INFO L354 Elim1Store]: treesize reduction 88, result has 14.6 percent of original size [2021-10-21 20:34:24,705 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 83 treesize of output 89 [2021-10-21 20:34:24,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:34:24,711 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-21 20:34:24,731 INFO L354 Elim1Store]: treesize reduction 144, result has 14.8 percent of original size [2021-10-21 20:34:24,731 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 117 treesize of output 123 [2021-10-21 20:34:24,951 INFO L354 Elim1Store]: treesize reduction 84, result has 36.4 percent of original size [2021-10-21 20:34:24,951 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 65 [2021-10-21 20:34:25,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:34:25,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:34:25,189 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-21 20:34:25,189 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-21 20:34:25,214 INFO L354 Elim1Store]: treesize reduction 174, result has 9.8 percent of original size [2021-10-21 20:34:25,215 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 195 treesize of output 148 [2021-10-21 20:34:25,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:34:25,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:34:25,221 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-21 20:34:25,221 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-21 20:34:25,244 INFO L354 Elim1Store]: treesize reduction 204, result has 10.9 percent of original size [2021-10-21 20:34:25,244 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 180 treesize of output 176 [2021-10-21 20:34:25,272 INFO L354 Elim1Store]: treesize reduction 86, result has 23.9 percent of original size [2021-10-21 20:34:25,272 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 165 treesize of output 171 [2021-10-21 20:34:25,575 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-21 20:34:25,638 INFO L354 Elim1Store]: treesize reduction 232, result has 14.7 percent of original size [2021-10-21 20:34:25,638 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 178 treesize of output 159 [2021-10-21 20:34:25,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:34:25,645 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-21 20:34:25,701 INFO L354 Elim1Store]: treesize reduction 428, result has 14.4 percent of original size [2021-10-21 20:34:25,701 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 300 treesize of output 308 [2021-10-21 20:34:30,287 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 12 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:34:30,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [554015072] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:34:30,287 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:34:30,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 16] total 40 [2021-10-21 20:34:30,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559403812] [2021-10-21 20:34:30,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-10-21 20:34:30,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:34:30,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-10-21 20:34:30,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=1461, Unknown=0, NotChecked=0, Total=1560 [2021-10-21 20:34:30,289 INFO L87 Difference]: Start difference. First operand 155 states and 167 transitions. Second operand has 40 states, 40 states have (on average 3.25) internal successors, (130), 40 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:34:54,812 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-10-21 20:34:54,812 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 101 [2021-10-21 20:34:54,849 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-10-21 20:34:55,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-10-21 20:34:55,014 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:312) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:158) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:139) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.pop(ManagedScript.java:128) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertPostcondition(IncrementalHoareTripleChecker.java:662) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:281) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ProtectiveHoareTripleChecker.releaseLock(ProtectiveHoareTripleChecker.java:93) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.EfficientHoareTripleChecker.releaseLock(EfficientHoareTripleChecker.java:162) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:201) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:881) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:778) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: java.io.IOException: Stream closed at java.base/java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:442) at java.base/java.io.OutputStream.write(OutputStream.java:157) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:81) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:142) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:318) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:153) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:251) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:257) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:156) ... 35 more [2021-10-21 20:34:55,018 INFO L168 Benchmark]: Toolchain (without parser) took 459250.34 ms. Allocated memory was 90.2 MB in the beginning and 446.7 MB in the end (delta: 356.5 MB). Free memory was 67.7 MB in the beginning and 264.6 MB in the end (delta: -197.0 MB). Peak memory consumption was 355.6 MB. Max. memory is 16.1 GB. [2021-10-21 20:34:55,018 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 90.2 MB. Free memory is still 64.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:34:55,018 INFO L168 Benchmark]: CACSL2BoogieTranslator took 681.00 ms. Allocated memory is still 90.2 MB. Free memory was 67.5 MB in the beginning and 50.2 MB in the end (delta: 17.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-21 20:34:55,018 INFO L168 Benchmark]: Boogie Procedure Inliner took 117.76 ms. Allocated memory is still 90.2 MB. Free memory was 50.2 MB in the beginning and 47.4 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-21 20:34:55,018 INFO L168 Benchmark]: Boogie Preprocessor took 98.66 ms. Allocated memory is still 90.2 MB. Free memory was 47.4 MB in the beginning and 44.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:34:55,019 INFO L168 Benchmark]: RCFGBuilder took 870.26 ms. Allocated memory was 90.2 MB in the beginning and 111.1 MB in the end (delta: 21.0 MB). Free memory was 44.7 MB in the beginning and 71.2 MB in the end (delta: -26.5 MB). Peak memory consumption was 17.7 MB. Max. memory is 16.1 GB. [2021-10-21 20:34:55,019 INFO L168 Benchmark]: TraceAbstraction took 457475.04 ms. Allocated memory was 111.1 MB in the beginning and 446.7 MB in the end (delta: 335.5 MB). Free memory was 70.6 MB in the beginning and 264.6 MB in the end (delta: -194.1 MB). Peak memory consumption was 337.9 MB. Max. memory is 16.1 GB. [2021-10-21 20:34:55,021 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 90.2 MB. Free memory is still 64.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 681.00 ms. Allocated memory is still 90.2 MB. Free memory was 67.5 MB in the beginning and 50.2 MB in the end (delta: 17.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 117.76 ms. Allocated memory is still 90.2 MB. Free memory was 50.2 MB in the beginning and 47.4 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 98.66 ms. Allocated memory is still 90.2 MB. Free memory was 47.4 MB in the beginning and 44.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 870.26 ms. Allocated memory was 90.2 MB in the beginning and 111.1 MB in the end (delta: 21.0 MB). Free memory was 44.7 MB in the beginning and 71.2 MB in the end (delta: -26.5 MB). Peak memory consumption was 17.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 457475.04 ms. Allocated memory was 111.1 MB in the beginning and 446.7 MB in the end (delta: 335.5 MB). Free memory was 70.6 MB in the beginning and 264.6 MB in the end (delta: -194.1 MB). Peak memory consumption was 337.9 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:312) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 20:34:57,446 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 20:34:57,450 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 20:34:57,526 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 20:34:57,527 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 20:34:57,531 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 20:34:57,533 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 20:34:57,542 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 20:34:57,546 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 20:34:57,551 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 20:34:57,553 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 20:34:57,555 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 20:34:57,555 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 20:34:57,558 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 20:34:57,560 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 20:34:57,564 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 20:34:57,566 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 20:34:57,567 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 20:34:57,569 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 20:34:57,577 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 20:34:57,579 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 20:34:57,581 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 20:34:57,583 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 20:34:57,586 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 20:34:57,596 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 20:34:57,596 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 20:34:57,597 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 20:34:57,599 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 20:34:57,599 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 20:34:57,600 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 20:34:57,601 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 20:34:57,602 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 20:34:57,604 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 20:34:57,605 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 20:34:57,607 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 20:34:57,607 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 20:34:57,608 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 20:34:57,608 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 20:34:57,608 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 20:34:57,610 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 20:34:57,611 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 20:34:57,612 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-21 20:34:57,659 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 20:34:57,659 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 20:34:57,660 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 20:34:57,660 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 20:34:57,663 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 20:34:57,663 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 20:34:57,664 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 20:34:57,664 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 20:34:57,664 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 20:34:57,665 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 20:34:57,666 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 20:34:57,666 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 20:34:57,667 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 20:34:57,667 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 20:34:57,667 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-21 20:34:57,668 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-21 20:34:57,668 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 20:34:57,668 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 20:34:57,669 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 20:34:57,669 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 20:34:57,669 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 20:34:57,670 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 20:34:57,670 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 20:34:57,670 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:34:57,670 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 20:34:57,671 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 20:34:57,671 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 20:34:57,672 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-21 20:34:57,672 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-21 20:34:57,672 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 20:34:57,672 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 20:34:57,673 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 20:34:57,673 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 20:34:57,674 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-21 20:34:57,674 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e47f94c757882803b8e19e21a897c3f5ab1653c3391e3b246153a1c416bdab7c [2021-10-21 20:34:58,048 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 20:34:58,072 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 20:34:58,076 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 20:34:58,077 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 20:34:58,078 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 20:34:58,079 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/heap-manipulation/merge_sort-2.i [2021-10-21 20:34:58,178 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/data/1f7361ca5/87ce514f610b4815852f0a1c9c3d3de1/FLAG3a83d7176 [2021-10-21 20:34:58,818 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 20:34:58,819 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/sv-benchmarks/c/heap-manipulation/merge_sort-2.i [2021-10-21 20:34:58,849 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/data/1f7361ca5/87ce514f610b4815852f0a1c9c3d3de1/FLAG3a83d7176 [2021-10-21 20:34:59,067 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/data/1f7361ca5/87ce514f610b4815852f0a1c9c3d3de1 [2021-10-21 20:34:59,070 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 20:34:59,072 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 20:34:59,074 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 20:34:59,074 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 20:34:59,079 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 20:34:59,080 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:34:59" (1/1) ... [2021-10-21 20:34:59,081 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5828309 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:34:59, skipping insertion in model container [2021-10-21 20:34:59,081 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:34:59" (1/1) ... [2021-10-21 20:34:59,090 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 20:34:59,129 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 20:34:59,472 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/sv-benchmarks/c/heap-manipulation/merge_sort-2.i[22632,22645] [2021-10-21 20:34:59,537 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:34:59,557 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 20:34:59,619 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/sv-benchmarks/c/heap-manipulation/merge_sort-2.i[22632,22645] [2021-10-21 20:34:59,652 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:34:59,691 INFO L208 MainTranslator]: Completed translation [2021-10-21 20:34:59,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:34:59 WrapperNode [2021-10-21 20:34:59,692 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 20:34:59,693 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 20:34:59,693 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 20:34:59,693 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 20:34:59,699 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:34:59" (1/1) ... [2021-10-21 20:34:59,721 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:34:59" (1/1) ... [2021-10-21 20:34:59,761 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 20:34:59,762 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 20:34:59,763 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 20:34:59,763 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 20:34:59,774 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:34:59" (1/1) ... [2021-10-21 20:34:59,777 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:34:59" (1/1) ... [2021-10-21 20:34:59,793 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:34:59" (1/1) ... [2021-10-21 20:34:59,805 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:34:59" (1/1) ... [2021-10-21 20:34:59,839 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:34:59" (1/1) ... [2021-10-21 20:34:59,851 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:34:59" (1/1) ... [2021-10-21 20:34:59,858 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:34:59" (1/1) ... [2021-10-21 20:34:59,876 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 20:34:59,877 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 20:34:59,886 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 20:34:59,887 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 20:34:59,888 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:34:59" (1/1) ... [2021-10-21 20:34:59,900 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:34:59,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:34:59,927 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 20:34:59,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 20:34:59,982 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-21 20:34:59,982 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-21 20:34:59,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-21 20:34:59,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 20:34:59,983 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-21 20:34:59,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-21 20:34:59,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-21 20:34:59,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-21 20:34:59,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 20:34:59,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 20:35:01,146 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 20:35:01,146 INFO L299 CfgBuilder]: Removed 75 assume(true) statements. [2021-10-21 20:35:01,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:35:01 BoogieIcfgContainer [2021-10-21 20:35:01,149 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 20:35:01,151 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 20:35:01,151 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 20:35:01,154 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 20:35:01,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 08:34:59" (1/3) ... [2021-10-21 20:35:01,155 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79b977ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:35:01, skipping insertion in model container [2021-10-21 20:35:01,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:34:59" (2/3) ... [2021-10-21 20:35:01,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79b977ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:35:01, skipping insertion in model container [2021-10-21 20:35:01,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:35:01" (3/3) ... [2021-10-21 20:35:01,157 INFO L111 eAbstractionObserver]: Analyzing ICFG merge_sort-2.i [2021-10-21 20:35:01,163 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 20:35:01,164 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2021-10-21 20:35:01,230 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 20:35:01,246 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 [2021-10-21 20:35:01,247 INFO L340 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2021-10-21 20:35:01,273 INFO L276 IsEmpty]: Start isEmpty. Operand has 98 states, 84 states have (on average 1.880952380952381) internal successors, (158), 97 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:35:01,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-21 20:35:01,301 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:35:01,302 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-21 20:35:01,303 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-10-21 20:35:01,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:35:01,310 INFO L82 PathProgramCache]: Analyzing trace with hash 889651805, now seen corresponding path program 1 times [2021-10-21 20:35:01,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:35:01,323 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1477257305] [2021-10-21 20:35:01,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:35:01,325 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:35:01,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:35:01,328 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:35:01,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-21 20:35:01,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:35:01,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-21 20:35:01,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:35:01,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:35:01,566 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:35:01,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:35:01,638 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:35:01,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1477257305] [2021-10-21 20:35:01,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1477257305] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:35:01,640 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:35:01,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-21 20:35:01,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045252807] [2021-10-21 20:35:01,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 20:35:01,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:35:01,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:35:01,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:35:01,668 INFO L87 Difference]: Start difference. First operand has 98 states, 84 states have (on average 1.880952380952381) internal successors, (158), 97 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:35:01,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:35:01,770 INFO L93 Difference]: Finished difference Result 203 states and 327 transitions. [2021-10-21 20:35:01,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:35:01,772 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-21 20:35:01,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:35:01,787 INFO L225 Difference]: With dead ends: 203 [2021-10-21 20:35:01,788 INFO L226 Difference]: Without dead ends: 96 [2021-10-21 20:35:01,792 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:35:01,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-10-21 20:35:01,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 92. [2021-10-21 20:35:01,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 79 states have (on average 1.2911392405063291) internal successors, (102), 91 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) [2021-10-21 20:35:01,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 102 transitions. [2021-10-21 20:35:01,884 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 102 transitions. Word has length 6 [2021-10-21 20:35:01,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:35:01,884 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 102 transitions. [2021-10-21 20:35:01,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:35:01,887 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 102 transitions. [2021-10-21 20:35:01,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-21 20:35:01,887 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:35:01,888 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:35:01,905 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-21 20:35:02,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:35:02,101 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-10-21 20:35:02,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:35:02,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1373855962, now seen corresponding path program 1 times [2021-10-21 20:35:02,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:35:02,103 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [164480587] [2021-10-21 20:35:02,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:35:02,104 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:35:02,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:35:02,113 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:35:02,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-21 20:35:02,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:35:02,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-21 20:35:02,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:35:02,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:35:02,351 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:35:02,406 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:35:02,406 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:35:02,406 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [164480587] [2021-10-21 20:35:02,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [164480587] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:35:02,407 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:35:02,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-21 20:35:02,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713591006] [2021-10-21 20:35:02,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 20:35:02,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:35:02,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 20:35:02,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:35:02,410 INFO L87 Difference]: Start difference. First operand 92 states and 102 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:35:02,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:35:02,664 INFO L93 Difference]: Finished difference Result 251 states and 286 transitions. [2021-10-21 20:35:02,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 20:35:02,668 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-21 20:35:02,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:35:02,672 INFO L225 Difference]: With dead ends: 251 [2021-10-21 20:35:02,672 INFO L226 Difference]: Without dead ends: 245 [2021-10-21 20:35:02,673 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 53.2ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-21 20:35:02,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2021-10-21 20:35:02,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 94. [2021-10-21 20:35:02,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 82 states have (on average 1.2804878048780488) internal successors, (105), 93 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:35:02,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 105 transitions. [2021-10-21 20:35:02,697 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 105 transitions. Word has length 11 [2021-10-21 20:35:02,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:35:02,698 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 105 transitions. [2021-10-21 20:35:02,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:35:02,698 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 105 transitions. [2021-10-21 20:35:02,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-21 20:35:02,699 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:35:02,699 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:35:02,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-21 20:35:02,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:35:02,900 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-10-21 20:35:02,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:35:02,901 INFO L82 PathProgramCache]: Analyzing trace with hash 2034213914, now seen corresponding path program 1 times [2021-10-21 20:35:02,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:35:02,902 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [812087753] [2021-10-21 20:35:02,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:35:02,902 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:35:02,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:35:02,903 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:35:02,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-21 20:35:03,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:35:03,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-21 20:35:03,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:35:03,214 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2021-10-21 20:35:03,223 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2021-10-21 20:35:03,531 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-21 20:35:03,532 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 24 [2021-10-21 20:35:03,537 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 18 treesize of output 10 [2021-10-21 20:35:03,574 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:35:03,575 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:35:03,855 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:35:03,856 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:35:03,856 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [812087753] [2021-10-21 20:35:03,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [812087753] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-21 20:35:03,857 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:35:03,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 10 [2021-10-21 20:35:03,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037132537] [2021-10-21 20:35:03,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 20:35:03,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:35:03,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 20:35:03,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:35:03,862 INFO L87 Difference]: Start difference. First operand 94 states and 105 transitions. Second operand has 10 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:35:09,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:35:09,249 INFO L93 Difference]: Finished difference Result 296 states and 334 transitions. [2021-10-21 20:35:09,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-21 20:35:09,250 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-21 20:35:09,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:35:09,254 INFO L225 Difference]: With dead ends: 296 [2021-10-21 20:35:09,254 INFO L226 Difference]: Without dead ends: 294 [2021-10-21 20:35:09,255 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 319.7ms TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-10-21 20:35:09,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2021-10-21 20:35:09,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 108. [2021-10-21 20:35:09,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 96 states have (on average 1.2604166666666667) internal successors, (121), 107 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:35:09,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 121 transitions. [2021-10-21 20:35:09,271 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 121 transitions. Word has length 18 [2021-10-21 20:35:09,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:35:09,271 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 121 transitions. [2021-10-21 20:35:09,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:35:09,272 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 121 transitions. [2021-10-21 20:35:09,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-21 20:35:09,273 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:35:09,273 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:35:09,292 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-21 20:35:09,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:35:09,489 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-10-21 20:35:09,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:35:09,489 INFO L82 PathProgramCache]: Analyzing trace with hash 2012264901, now seen corresponding path program 1 times [2021-10-21 20:35:09,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:35:09,490 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [641546631] [2021-10-21 20:35:09,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:35:09,490 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:35:09,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:35:09,494 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:35:09,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-21 20:35:09,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:35:09,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-21 20:35:09,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:35:09,758 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2021-10-21 20:35:09,773 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2021-10-21 20:35:09,967 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 28 [2021-10-21 20:35:09,974 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-21 20:35:09,975 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 13 [2021-10-21 20:35:10,014 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:35:10,014 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:35:10,240 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:35:10,241 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:35:10,241 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [641546631] [2021-10-21 20:35:10,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [641546631] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-21 20:35:10,242 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:35:10,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 10 [2021-10-21 20:35:10,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724933226] [2021-10-21 20:35:10,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 20:35:10,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:35:10,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 20:35:10,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:35:10,244 INFO L87 Difference]: Start difference. First operand 108 states and 121 transitions. Second operand has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 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) [2021-10-21 20:35:16,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:35:16,130 INFO L93 Difference]: Finished difference Result 277 states and 315 transitions. [2021-10-21 20:35:16,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-21 20:35:16,131 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 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 18 [2021-10-21 20:35:16,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:35:16,132 INFO L225 Difference]: With dead ends: 277 [2021-10-21 20:35:16,134 INFO L226 Difference]: Without dead ends: 197 [2021-10-21 20:35:16,136 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 294.5ms TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-10-21 20:35:16,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-10-21 20:35:16,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 108. [2021-10-21 20:35:16,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 96 states have (on average 1.25) internal successors, (120), 107 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:35:16,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 120 transitions. [2021-10-21 20:35:16,159 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 120 transitions. Word has length 18 [2021-10-21 20:35:16,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:35:16,159 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 120 transitions. [2021-10-21 20:35:16,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 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) [2021-10-21 20:35:16,160 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 120 transitions. [2021-10-21 20:35:16,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-21 20:35:16,161 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:35:16,161 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:35:16,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-21 20:35:16,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:35:16,381 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-10-21 20:35:16,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:35:16,381 INFO L82 PathProgramCache]: Analyzing trace with hash -715869343, now seen corresponding path program 1 times [2021-10-21 20:35:16,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:35:16,382 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1968125631] [2021-10-21 20:35:16,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:35:16,383 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:35:16,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:35:16,391 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:35:16,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-21 20:35:16,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:35:16,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-21 20:35:16,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:35:16,659 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-10-21 20:35:16,660 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 21 [2021-10-21 20:35:16,768 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 8 [2021-10-21 20:35:16,789 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:35:16,790 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:35:16,886 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 [2021-10-21 20:35:16,942 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:35:16,943 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:35:16,943 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1968125631] [2021-10-21 20:35:16,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1968125631] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:35:16,943 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:35:16,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-10-21 20:35:16,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165781533] [2021-10-21 20:35:16,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 20:35:16,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:35:16,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 20:35:16,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:35:16,945 INFO L87 Difference]: Start difference. First operand 108 states and 120 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 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) [2021-10-21 20:35:18,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:35:18,474 INFO L93 Difference]: Finished difference Result 228 states and 249 transitions. [2021-10-21 20:35:18,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 20:35:18,475 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-21 20:35:18,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:35:18,477 INFO L225 Difference]: With dead ends: 228 [2021-10-21 20:35:18,477 INFO L226 Difference]: Without dead ends: 226 [2021-10-21 20:35:18,478 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 121.4ms TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:35:18,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-10-21 20:35:18,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 114. [2021-10-21 20:35:18,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 102 states have (on average 1.2450980392156863) internal successors, (127), 113 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:35:18,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 127 transitions. [2021-10-21 20:35:18,493 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 127 transitions. Word has length 21 [2021-10-21 20:35:18,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:35:18,493 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 127 transitions. [2021-10-21 20:35:18,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 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) [2021-10-21 20:35:18,494 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 127 transitions. [2021-10-21 20:35:18,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-21 20:35:18,495 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:35:18,495 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:35:18,521 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-21 20:35:18,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:35:18,718 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-10-21 20:35:18,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:35:18,719 INFO L82 PathProgramCache]: Analyzing trace with hash 397106019, now seen corresponding path program 2 times [2021-10-21 20:35:18,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:35:18,720 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1888550202] [2021-10-21 20:35:18,720 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 20:35:18,720 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:35:18,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:35:18,721 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:35:18,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-21 20:35:18,858 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-21 20:35:18,858 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 20:35:18,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-21 20:35:18,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:35:19,009 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2021-10-21 20:35:19,014 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 22 treesize of output 10 [2021-10-21 20:35:19,046 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-21 20:35:19,047 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:35:19,226 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-21 20:35:19,226 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:35:19,228 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1888550202] [2021-10-21 20:35:19,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1888550202] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:35:19,231 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:35:19,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 6 [2021-10-21 20:35:19,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867981410] [2021-10-21 20:35:19,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 20:35:19,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:35:19,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 20:35:19,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:35:19,233 INFO L87 Difference]: Start difference. First operand 114 states and 127 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 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) [2021-10-21 20:35:20,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:35:20,468 INFO L93 Difference]: Finished difference Result 143 states and 159 transitions. [2021-10-21 20:35:20,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 20:35:20,469 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 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 23 [2021-10-21 20:35:20,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:35:20,471 INFO L225 Difference]: With dead ends: 143 [2021-10-21 20:35:20,471 INFO L226 Difference]: Without dead ends: 141 [2021-10-21 20:35:20,471 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 119.3ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:35:20,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-10-21 20:35:20,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 108. [2021-10-21 20:35:20,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 97 states have (on average 1.2371134020618557) internal successors, (120), 107 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:35:20,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 120 transitions. [2021-10-21 20:35:20,480 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 120 transitions. Word has length 23 [2021-10-21 20:35:20,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:35:20,480 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 120 transitions. [2021-10-21 20:35:20,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 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) [2021-10-21 20:35:20,481 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 120 transitions. [2021-10-21 20:35:20,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-21 20:35:20,482 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:35:20,482 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:35:20,501 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-21 20:35:20,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:35:20,697 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-10-21 20:35:20,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:35:20,698 INFO L82 PathProgramCache]: Analyzing trace with hash 375157006, now seen corresponding path program 2 times [2021-10-21 20:35:20,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:35:20,698 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [471802190] [2021-10-21 20:35:20,698 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 20:35:20,699 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:35:20,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:35:20,705 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:35:20,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-21 20:35:20,833 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-21 20:35:20,833 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 20:35:20,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-21 20:35:20,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:35:20,986 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 40 treesize of output 28 [2021-10-21 20:35:20,991 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 25 treesize of output 13 [2021-10-21 20:35:21,024 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-21 20:35:21,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:35:21,202 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-21 20:35:21,203 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:35:21,203 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [471802190] [2021-10-21 20:35:21,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [471802190] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:35:21,203 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:35:21,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 6 [2021-10-21 20:35:21,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790653634] [2021-10-21 20:35:21,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 20:35:21,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:35:21,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 20:35:21,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:35:21,205 INFO L87 Difference]: Start difference. First operand 108 states and 120 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 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) [2021-10-21 20:35:23,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:35:23,279 INFO L93 Difference]: Finished difference Result 108 states and 120 transitions. [2021-10-21 20:35:23,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 20:35:23,280 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 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 23 [2021-10-21 20:35:23,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:35:23,281 INFO L225 Difference]: With dead ends: 108 [2021-10-21 20:35:23,281 INFO L226 Difference]: Without dead ends: 106 [2021-10-21 20:35:23,282 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 137.2ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:35:23,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-10-21 20:35:23,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2021-10-21 20:35:23,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 96 states have (on average 1.2291666666666667) internal successors, (118), 105 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) [2021-10-21 20:35:23,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 118 transitions. [2021-10-21 20:35:23,293 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 118 transitions. Word has length 23 [2021-10-21 20:35:23,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:35:23,293 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 118 transitions. [2021-10-21 20:35:23,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 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) [2021-10-21 20:35:23,294 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 118 transitions. [2021-10-21 20:35:23,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-21 20:35:23,295 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:35:23,295 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:35:23,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-21 20:35:23,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:35:23,511 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-10-21 20:35:23,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:35:23,511 INFO L82 PathProgramCache]: Analyzing trace with hash -1944987570, now seen corresponding path program 1 times [2021-10-21 20:35:23,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:35:23,512 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [19049817] [2021-10-21 20:35:23,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:35:23,512 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:35:23,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:35:23,513 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:35:23,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-21 20:35:23,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:35:23,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-21 20:35:23,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:35:23,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2021-10-21 20:35:23,793 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-21 20:35:23,793 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 18 [2021-10-21 20:35:23,825 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-10-21 20:35:23,826 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 7 [2021-10-21 20:35:23,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:35:23,839 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2021-10-21 20:35:24,000 INFO L354 Elim1Store]: treesize reduction 80, result has 15.8 percent of original size [2021-10-21 20:35:24,000 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 2 case distinctions, treesize of input 51 treesize of output 54 [2021-10-21 20:35:24,064 INFO L354 Elim1Store]: treesize reduction 108, result has 15.0 percent of original size [2021-10-21 20:35:24,064 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 2 case distinctions, treesize of input 43 treesize of output 46 [2021-10-21 20:35:24,476 INFO L354 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2021-10-21 20:35:24,476 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 36 [2021-10-21 20:35:24,486 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-10-21 20:35:24,487 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 17 [2021-10-21 20:35:24,529 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:35:24,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:35:34,574 INFO L354 Elim1Store]: treesize reduction 189, result has 9.1 percent of original size [2021-10-21 20:35:34,574 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 12737 treesize of output 9128 [2021-10-21 20:35:35,162 INFO L354 Elim1Store]: treesize reduction 177, result has 14.9 percent of original size [2021-10-21 20:35:35,163 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 15071 treesize of output 11031 [2021-10-21 20:35:35,406 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-10-21 20:35:35,407 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 10863 treesize of output 10259 [2021-10-21 20:35:35,458 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:35:35,459 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [19049817] [2021-10-21 20:35:35,459 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Should have been eliminated by DER [2021-10-21 20:35:35,459 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [857026335] [2021-10-21 20:35:35,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:35:35,460 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-21 20:35:35,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/cvc4 [2021-10-21 20:35:35,463 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-21 20:35:35,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-10-21 20:35:35,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:35:35,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-21 20:35:35,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:35:35,843 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@4b5be1a9 [2021-10-21 20:35:35,843 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722068885] [2021-10-21 20:35:35,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:35:35,844 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:35:35,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:35:35,845 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:35:35,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-21 20:35:36,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:35:36,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-21 20:35:36,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:35:36,086 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@4b5be1a9 [2021-10-21 20:35:36,087 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:35:36,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-21 20:35:36,087 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-10-21 20:35:36,087 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-10-21 20:35:36,093 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 20:35:36,096 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 20:35:36,096 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 20:35:36,096 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 20:35:36,097 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 20:35:36,097 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 20:35:36,097 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 20:35:36,097 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 20:35:36,097 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 20:35:36,098 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 20:35:36,098 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 20:35:36,098 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 20:35:36,098 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 20:35:36,105 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-10-21 20:35:36,310 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-21 20:35:36,521 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-21 20:35:36,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:35:36,707 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 20:35:36,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 08:35:36 BoogieIcfgContainer [2021-10-21 20:35:36,720 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 20:35:36,721 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 20:35:36,721 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 20:35:36,721 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 20:35:36,722 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:35:01" (3/4) ... [2021-10-21 20:35:36,725 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-21 20:35:36,725 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 20:35:36,726 INFO L168 Benchmark]: Toolchain (without parser) took 37654.26 ms. Allocated memory was 83.9 MB in the beginning and 130.0 MB in the end (delta: 46.1 MB). Free memory was 67.2 MB in the beginning and 91.8 MB in the end (delta: -24.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 16.1 GB. [2021-10-21 20:35:36,727 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 83.9 MB. Free memory was 64.7 MB in the beginning and 64.6 MB in the end (delta: 66.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:35:36,727 INFO L168 Benchmark]: CACSL2BoogieTranslator took 618.57 ms. Allocated memory is still 83.9 MB. Free memory was 67.0 MB in the beginning and 57.7 MB in the end (delta: 9.4 MB). Peak memory consumption was 11.0 MB. Max. memory is 16.1 GB. [2021-10-21 20:35:36,728 INFO L168 Benchmark]: Boogie Procedure Inliner took 68.76 ms. Allocated memory is still 83.9 MB. Free memory was 57.7 MB in the beginning and 54.7 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-21 20:35:36,728 INFO L168 Benchmark]: Boogie Preprocessor took 114.05 ms. Allocated memory is still 83.9 MB. Free memory was 54.7 MB in the beginning and 51.8 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:35:36,729 INFO L168 Benchmark]: RCFGBuilder took 1271.81 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 51.8 MB in the beginning and 64.8 MB in the end (delta: -13.0 MB). Peak memory consumption was 15.8 MB. Max. memory is 16.1 GB. [2021-10-21 20:35:36,729 INFO L168 Benchmark]: TraceAbstraction took 35569.37 ms. Allocated memory was 100.7 MB in the beginning and 130.0 MB in the end (delta: 29.4 MB). Free memory was 64.0 MB in the beginning and 91.8 MB in the end (delta: -27.7 MB). Peak memory consumption was 81.6 kB. Max. memory is 16.1 GB. [2021-10-21 20:35:36,730 INFO L168 Benchmark]: Witness Printer took 5.01 ms. Allocated memory is still 130.0 MB. Free memory is still 91.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:35:36,732 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 83.9 MB. Free memory was 64.7 MB in the beginning and 64.6 MB in the end (delta: 66.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 618.57 ms. Allocated memory is still 83.9 MB. Free memory was 67.0 MB in the beginning and 57.7 MB in the end (delta: 9.4 MB). Peak memory consumption was 11.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 68.76 ms. Allocated memory is still 83.9 MB. Free memory was 57.7 MB in the beginning and 54.7 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 114.05 ms. Allocated memory is still 83.9 MB. Free memory was 54.7 MB in the beginning and 51.8 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1271.81 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 51.8 MB in the beginning and 64.8 MB in the end (delta: -13.0 MB). Peak memory consumption was 15.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 35569.37 ms. Allocated memory was 100.7 MB in the beginning and 130.0 MB in the end (delta: 29.4 MB). Free memory was 64.0 MB in the beginning and 91.8 MB in the end (delta: -27.7 MB). Peak memory consumption was 81.6 kB. Max. memory is 16.1 GB. * Witness Printer took 5.01 ms. Allocated memory is still 130.0 MB. Free memory is still 91.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 565]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L638] struct list *data = ((void *)0); [L639] COND TRUE __VERIFIER_nondet_int() [L640] struct node *node = malloc(sizeof *node); [L641] COND FALSE !(!node) [L643] node->next = ((void *)0) [L644] node->value = __VERIFIER_nondet_int() [L645] struct list *item = malloc(sizeof *item); [L646] COND FALSE !(!item) [L648] item->slist = node [L649] item->next = data [L650] data = item [L639] COND FALSE !(__VERIFIER_nondet_int()) [L652] COND FALSE !(!data) [L615] COND FALSE !(!(shape)) [L616] shape->next [L616] COND FALSE !(shape->next) [L622] COND FALSE !(!(shape)) [L623] EXPR shape->next [L623] COND FALSE !(!(shape->next == ((void *)0))) [L624] EXPR shape->slist [L624] COND FALSE !(!(shape->slist)) [L625] EXPR shape->slist [L625] EXPR shape->slist->next [L625] COND TRUE !(shape->slist->next == ((void *)0)) [L565] reach_error() - UnprovableResult [Line: 565]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 98 locations, 13 error locations. Started 1 CEGAR loops. OverallTime: 35478.3ms, OverallIterations: 8, TraceHistogramMax: 2, EmptinessCheckTime: 41.5ms, AutomataDifference: 16547.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 19.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 565 SDtfs, 1690 SDslu, 1672 SDs, 0 SdLazy, 920 SolverSat, 34 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 14944.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 242 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1058.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=114occurred in iteration=5, InterpolantAutomatonStates: 49, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 142.9ms AutomataMinimizationTime, 7 MinimizatonAttempts, 575 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 93.6ms SsaConstructionTime, 207.7ms SatisfiabilityAnalysisTime, 2968.6ms InterpolantComputationTime, 120 NumberOfCodeBlocks, 100 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 226 ConstructedInterpolants, 0 QuantifiedInterpolants, 1592 SizeOfPredicates, 49 NumberOfNonLiveVariables, 354 ConjunctsInSsa, 62 ConjunctsInUnsatCore, 14 InterpolantComputations, 10 PerfectInterpolantSequences, 32/36 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-21 20:35:36,794 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bec7fb8-0f40-481c-b091-fa0c7530adae/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...