./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_linked_list_node_reset_harness-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fcb8e130 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_linked_list_node_reset_harness-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 64bit --witnessprinter.graph.data.programhash e96d8d92db1667c6f6142560a7fad2417327f7e06eb532366f9ad7d4ddd7d1f5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-fcb8e13 [2021-11-22 20:18:00,238 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 20:18:00,251 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 20:18:00,301 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 20:18:00,302 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 20:18:00,305 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 20:18:00,306 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 20:18:00,308 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 20:18:00,310 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 20:18:00,312 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 20:18:00,313 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 20:18:00,313 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 20:18:00,314 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 20:18:00,316 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 20:18:00,317 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 20:18:00,320 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 20:18:00,322 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 20:18:00,322 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 20:18:00,324 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 20:18:00,329 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 20:18:00,330 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 20:18:00,331 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 20:18:00,333 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 20:18:00,333 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 20:18:00,338 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 20:18:00,339 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 20:18:00,339 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 20:18:00,340 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 20:18:00,341 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 20:18:00,341 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 20:18:00,341 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 20:18:00,342 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 20:18:00,343 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 20:18:00,344 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 20:18:00,345 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 20:18:00,345 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 20:18:00,346 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 20:18:00,346 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 20:18:00,346 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 20:18:00,347 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 20:18:00,347 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 20:18:00,348 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-22 20:18:00,374 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 20:18:00,374 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 20:18:00,375 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 20:18:00,375 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 20:18:00,376 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 20:18:00,376 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 20:18:00,376 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 20:18:00,376 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 20:18:00,376 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 20:18:00,377 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 20:18:00,378 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 20:18:00,378 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 20:18:00,378 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 20:18:00,378 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 20:18:00,378 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 20:18:00,378 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 20:18:00,379 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 20:18:00,379 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 20:18:00,379 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 20:18:00,379 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 20:18:00,379 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 20:18:00,379 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 20:18:00,380 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 20:18:00,380 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 20:18:00,380 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 20:18:00,380 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 20:18:00,380 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 20:18:00,380 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 20:18:00,380 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 20:18:00,380 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e96d8d92db1667c6f6142560a7fad2417327f7e06eb532366f9ad7d4ddd7d1f5 [2021-11-22 20:18:00,621 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 20:18:00,639 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 20:18:00,642 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 20:18:00,644 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 20:18:00,645 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 20:18:00,646 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_linked_list_node_reset_harness-1.i [2021-11-22 20:18:00,710 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54082e9ad/930fffef456745599b8f8bb6712092cd/FLAG471a1f4a7 [2021-11-22 20:18:01,349 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 20:18:01,350 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_linked_list_node_reset_harness-1.i [2021-11-22 20:18:01,380 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54082e9ad/930fffef456745599b8f8bb6712092cd/FLAG471a1f4a7 [2021-11-22 20:18:01,684 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54082e9ad/930fffef456745599b8f8bb6712092cd [2021-11-22 20:18:01,686 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 20:18:01,689 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 20:18:01,692 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 20:18:01,698 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 20:18:01,701 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 20:18:01,701 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 08:18:01" (1/1) ... [2021-11-22 20:18:01,702 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26a74805 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:18:01, skipping insertion in model container [2021-11-22 20:18:01,702 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 08:18:01" (1/1) ... [2021-11-22 20:18:01,706 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 20:18:01,779 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 20:18:01,941 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_linked_list_node_reset_harness-1.i[4500,4513] [2021-11-22 20:18:01,945 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_linked_list_node_reset_harness-1.i[4560,4573] [2021-11-22 20:18:02,509 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:18:02,510 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:18:02,511 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:18:02,512 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:18:02,513 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:18:02,523 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:18:02,523 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:18:02,524 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:18:02,525 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:18:02,526 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:18:02,526 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:18:02,527 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:18:02,527 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:18:02,748 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-22 20:18:02,748 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-22 20:18:02,749 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-22 20:18:02,751 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-22 20:18:02,752 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-22 20:18:02,752 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-22 20:18:02,753 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-22 20:18:02,753 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-22 20:18:02,753 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-22 20:18:02,754 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-22 20:18:02,846 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-22 20:18:02,893 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 20:18:02,910 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 20:18:02,934 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_linked_list_node_reset_harness-1.i[4500,4513] [2021-11-22 20:18:02,936 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_linked_list_node_reset_harness-1.i[4560,4573] [2021-11-22 20:18:02,960 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:18:02,965 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:18:02,966 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:18:02,966 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:18:02,969 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:18:02,974 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:18:02,983 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:18:02,984 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:18:02,984 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:18:02,985 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:18:02,986 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:18:02,986 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:18:02,986 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:18:03,018 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-22 20:18:03,019 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-22 20:18:03,019 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-22 20:18:03,020 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-22 20:18:03,021 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-22 20:18:03,022 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-22 20:18:03,022 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-22 20:18:03,022 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-22 20:18:03,023 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-22 20:18:03,023 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-22 20:18:03,047 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-22 20:18:03,066 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 20:18:03,189 INFO L208 MainTranslator]: Completed translation [2021-11-22 20:18:03,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:18:03 WrapperNode [2021-11-22 20:18:03,189 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 20:18:03,190 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 20:18:03,190 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 20:18:03,190 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 20:18:03,194 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:18:03" (1/1) ... [2021-11-22 20:18:03,254 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:18:03" (1/1) ... [2021-11-22 20:18:03,295 INFO L137 Inliner]: procedures = 679, calls = 1032, calls flagged for inlining = 542, calls inlined = 10, statements flattened = 97 [2021-11-22 20:18:03,295 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 20:18:03,296 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 20:18:03,296 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 20:18:03,296 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 20:18:03,302 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:18:03" (1/1) ... [2021-11-22 20:18:03,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:18:03" (1/1) ... [2021-11-22 20:18:03,306 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:18:03" (1/1) ... [2021-11-22 20:18:03,306 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:18:03" (1/1) ... [2021-11-22 20:18:03,319 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:18:03" (1/1) ... [2021-11-22 20:18:03,321 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:18:03" (1/1) ... [2021-11-22 20:18:03,323 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:18:03" (1/1) ... [2021-11-22 20:18:03,325 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 20:18:03,326 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 20:18:03,326 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 20:18:03,326 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 20:18:03,341 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:18:03" (1/1) ... [2021-11-22 20:18:03,346 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 20:18:03,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:18:03,373 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 20:18:03,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 20:18:03,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-22 20:18:03,412 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-22 20:18:03,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 20:18:03,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 20:18:03,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 20:18:03,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-22 20:18:03,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-22 20:18:03,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 20:18:03,584 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 20:18:03,585 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 20:18:03,721 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 20:18:03,725 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 20:18:03,726 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-22 20:18:03,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 08:18:03 BoogieIcfgContainer [2021-11-22 20:18:03,727 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 20:18:03,728 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 20:18:03,728 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 20:18:03,734 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 20:18:03,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 08:18:01" (1/3) ... [2021-11-22 20:18:03,735 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ee2b4ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 08:18:03, skipping insertion in model container [2021-11-22 20:18:03,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:18:03" (2/3) ... [2021-11-22 20:18:03,735 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ee2b4ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 08:18:03, skipping insertion in model container [2021-11-22 20:18:03,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 08:18:03" (3/3) ... [2021-11-22 20:18:03,736 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_linked_list_node_reset_harness-1.i [2021-11-22 20:18:03,740 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 20:18:03,744 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-22 20:18:03,787 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 20:18:03,792 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-22 20:18:03,792 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-22 20:18:03,804 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 29 states have (on average 1.4827586206896552) internal successors, (43), 31 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:18:03,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-22 20:18:03,809 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:18:03,809 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:18:03,809 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 20:18:03,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:18:03,815 INFO L85 PathProgramCache]: Analyzing trace with hash 2063040190, now seen corresponding path program 1 times [2021-11-22 20:18:03,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:18:03,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860146690] [2021-11-22 20:18:03,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:18:03,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:18:03,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:18:04,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:18:04,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:18:04,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860146690] [2021-11-22 20:18:04,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860146690] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:18:04,039 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:18:04,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 20:18:04,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141989065] [2021-11-22 20:18:04,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:18:04,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-22 20:18:04,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:18:04,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-22 20:18:04,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 20:18:04,068 INFO L87 Difference]: Start difference. First operand has 32 states, 29 states have (on average 1.4827586206896552) internal successors, (43), 31 states have internal predecessors, (43), 0 states have call successors, (0), 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 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:18:04,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:18:04,081 INFO L93 Difference]: Finished difference Result 61 states and 82 transitions. [2021-11-22 20:18:04,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 20:18:04,083 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 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 [2021-11-22 20:18:04,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:18:04,087 INFO L225 Difference]: With dead ends: 61 [2021-11-22 20:18:04,087 INFO L226 Difference]: Without dead ends: 27 [2021-11-22 20:18:04,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 20:18:04,093 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 20:18:04,094 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 20:18:04,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-11-22 20:18:04,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-11-22 20:18:04,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 25 states have (on average 1.24) internal successors, (31), 26 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:18:04,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2021-11-22 20:18:04,114 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 11 [2021-11-22 20:18:04,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:18:04,115 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2021-11-22 20:18:04,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:18:04,118 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2021-11-22 20:18:04,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-22 20:18:04,118 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:18:04,119 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:18:04,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 20:18:04,120 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 20:18:04,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:18:04,121 INFO L85 PathProgramCache]: Analyzing trace with hash -154241512, now seen corresponding path program 1 times [2021-11-22 20:18:04,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:18:04,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133074703] [2021-11-22 20:18:04,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:18:04,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:18:04,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:18:04,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:18:04,257 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:18:04,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133074703] [2021-11-22 20:18:04,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133074703] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:18:04,257 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:18:04,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 20:18:04,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783061141] [2021-11-22 20:18:04,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:18:04,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 20:18:04,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:18:04,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 20:18:04,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 20:18:04,260 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:18:04,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:18:04,313 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2021-11-22 20:18:04,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 20:18:04,314 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-22 20:18:04,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:18:04,315 INFO L225 Difference]: With dead ends: 43 [2021-11-22 20:18:04,315 INFO L226 Difference]: Without dead ends: 34 [2021-11-22 20:18:04,316 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 20:18:04,317 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 13 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 20:18:04,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 77 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 20:18:04,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-11-22 20:18:04,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 28. [2021-11-22 20:18:04,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 27 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:18:04,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2021-11-22 20:18:04,325 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 14 [2021-11-22 20:18:04,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:18:04,326 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2021-11-22 20:18:04,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:18:04,326 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2021-11-22 20:18:04,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-22 20:18:04,327 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:18:04,327 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:18:04,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 20:18:04,327 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 20:18:04,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:18:04,328 INFO L85 PathProgramCache]: Analyzing trace with hash -152632798, now seen corresponding path program 1 times [2021-11-22 20:18:04,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:18:04,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146082651] [2021-11-22 20:18:04,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:18:04,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:18:04,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:18:04,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:18:04,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:18:04,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146082651] [2021-11-22 20:18:04,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146082651] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:18:04,482 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:18:04,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 20:18:04,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835213950] [2021-11-22 20:18:04,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:18:04,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 20:18:04,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:18:04,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 20:18:04,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 20:18:04,485 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:18:04,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:18:04,496 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2021-11-22 20:18:04,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 20:18:04,497 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-22 20:18:04,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:18:04,498 INFO L225 Difference]: With dead ends: 51 [2021-11-22 20:18:04,498 INFO L226 Difference]: Without dead ends: 29 [2021-11-22 20:18:04,498 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 20:18:04,501 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 20:18:04,502 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 54 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 20:18:04,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-11-22 20:18:04,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-11-22 20:18:04,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 28 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) [2021-11-22 20:18:04,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2021-11-22 20:18:04,510 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 14 [2021-11-22 20:18:04,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:18:04,511 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2021-11-22 20:18:04,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:18:04,511 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2021-11-22 20:18:04,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-22 20:18:04,512 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:18:04,512 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:18:04,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-22 20:18:04,512 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 20:18:04,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:18:04,513 INFO L85 PathProgramCache]: Analyzing trace with hash 520356801, now seen corresponding path program 1 times [2021-11-22 20:18:04,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:18:04,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298892246] [2021-11-22 20:18:04,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:18:04,514 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:18:04,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:18:04,657 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:18:04,657 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:18:04,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298892246] [2021-11-22 20:18:04,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298892246] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 20:18:04,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570011522] [2021-11-22 20:18:04,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:18:04,658 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:18:04,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:18:04,676 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 20:18:04,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-22 20:18:04,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:18:04,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-22 20:18:04,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:18:04,869 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-22 20:18:04,919 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-22 20:18:04,940 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:18:04,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 20:18:05,079 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 56 treesize of output 48 [2021-11-22 20:18:05,118 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:18:05,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570011522] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 20:18:05,118 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 20:18:05,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 12 [2021-11-22 20:18:05,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265572582] [2021-11-22 20:18:05,119 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 20:18:05,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-22 20:18:05,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:18:05,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-22 20:18:05,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-22 20:18:05,120 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:18:05,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:18:05,191 INFO L93 Difference]: Finished difference Result 52 states and 58 transitions. [2021-11-22 20:18:05,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 20:18:05,191 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 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 15 [2021-11-22 20:18:05,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:18:05,192 INFO L225 Difference]: With dead ends: 52 [2021-11-22 20:18:05,192 INFO L226 Difference]: Without dead ends: 30 [2021-11-22 20:18:05,192 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-11-22 20:18:05,193 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 20:18:05,193 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 185 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 20:18:05,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-11-22 20:18:05,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-11-22 20:18:05,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 29 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:18:05,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2021-11-22 20:18:05,196 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 15 [2021-11-22 20:18:05,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:18:05,196 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2021-11-22 20:18:05,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:18:05,196 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2021-11-22 20:18:05,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-22 20:18:05,197 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:18:05,197 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:18:05,219 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-22 20:18:05,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:18:05,417 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 20:18:05,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:18:05,417 INFO L85 PathProgramCache]: Analyzing trace with hash -91802110, now seen corresponding path program 2 times [2021-11-22 20:18:05,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:18:05,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013213472] [2021-11-22 20:18:05,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:18:05,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:18:05,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:18:05,491 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:18:05,492 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:18:05,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013213472] [2021-11-22 20:18:05,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013213472] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 20:18:05,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086063513] [2021-11-22 20:18:05,492 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-22 20:18:05,492 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:18:05,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:18:05,493 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 20:18:05,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-22 20:18:05,572 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-22 20:18:05,573 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 20:18:05,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-22 20:18:05,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:18:05,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-22 20:18:05,637 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-22 20:18:05,638 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 23 [2021-11-22 20:18:05,678 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-22 20:18:05,690 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:18:05,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 20:18:05,877 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 131 treesize of output 123 [2021-11-22 20:18:05,956 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:18:05,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1086063513] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 20:18:05,957 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 20:18:05,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2021-11-22 20:18:05,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135740340] [2021-11-22 20:18:05,957 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 20:18:05,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-22 20:18:05,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:18:05,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-22 20:18:05,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2021-11-22 20:18:05,958 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:18:06,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:18:06,080 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2021-11-22 20:18:06,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-22 20:18:06,081 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 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 16 [2021-11-22 20:18:06,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:18:06,081 INFO L225 Difference]: With dead ends: 61 [2021-11-22 20:18:06,081 INFO L226 Difference]: Without dead ends: 39 [2021-11-22 20:18:06,082 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2021-11-22 20:18:06,082 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 69 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 20:18:06,082 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 129 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 20:18:06,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-11-22 20:18:06,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 33. [2021-11-22 20:18:06,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 32 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) [2021-11-22 20:18:06,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2021-11-22 20:18:06,085 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 16 [2021-11-22 20:18:06,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:18:06,085 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2021-11-22 20:18:06,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:18:06,086 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2021-11-22 20:18:06,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-22 20:18:06,086 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:18:06,086 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:18:06,120 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-22 20:18:06,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:18:06,301 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 20:18:06,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:18:06,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1048809415, now seen corresponding path program 1 times [2021-11-22 20:18:06,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:18:06,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460935009] [2021-11-22 20:18:06,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:18:06,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:18:06,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:18:06,438 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-22 20:18:06,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:18:06,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460935009] [2021-11-22 20:18:06,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460935009] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 20:18:06,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563771499] [2021-11-22 20:18:06,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:18:06,438 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:18:06,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:18:06,452 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 20:18:06,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-22 20:18:06,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:18:06,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 44 conjunts are in the unsatisfiable core [2021-11-22 20:18:06,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:18:06,573 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-22 20:18:06,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:18:06,608 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-22 20:18:06,642 INFO L354 Elim1Store]: treesize reduction 56, result has 23.3 percent of original size [2021-11-22 20:18:06,643 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 32 [2021-11-22 20:18:06,751 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-22 20:18:06,752 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 47 treesize of output 13 [2021-11-22 20:18:06,765 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:18:06,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 20:18:07,030 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 304 treesize of output 292 [2021-11-22 20:18:07,119 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:18:07,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1563771499] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 20:18:07,119 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 20:18:07,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 9] total 20 [2021-11-22 20:18:07,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648611207] [2021-11-22 20:18:07,119 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 20:18:07,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-22 20:18:07,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:18:07,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-22 20:18:07,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2021-11-22 20:18:07,120 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 20 states, 20 states have (on average 2.25) internal successors, (45), 20 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:18:07,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:18:07,779 INFO L93 Difference]: Finished difference Result 136 states and 156 transitions. [2021-11-22 20:18:07,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-22 20:18:07,781 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.25) internal successors, (45), 20 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-22 20:18:07,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:18:07,782 INFO L225 Difference]: With dead ends: 136 [2021-11-22 20:18:07,782 INFO L226 Difference]: Without dead ends: 112 [2021-11-22 20:18:07,783 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=129, Invalid=801, Unknown=0, NotChecked=0, Total=930 [2021-11-22 20:18:07,783 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 130 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 20:18:07,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 406 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-22 20:18:07,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-11-22 20:18:07,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 42. [2021-11-22 20:18:07,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 40 states have (on average 1.225) internal successors, (49), 41 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:18:07,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2021-11-22 20:18:07,788 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 20 [2021-11-22 20:18:07,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:18:07,788 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2021-11-22 20:18:07,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.25) internal successors, (45), 20 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:18:07,789 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2021-11-22 20:18:07,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-22 20:18:07,789 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:18:07,789 INFO L514 BasicCegarLoop]: trace histogram [6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:18:07,821 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-22 20:18:08,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:18:08,006 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 20:18:08,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:18:08,007 INFO L85 PathProgramCache]: Analyzing trace with hash -898945352, now seen corresponding path program 2 times [2021-11-22 20:18:08,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:18:08,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555773193] [2021-11-22 20:18:08,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:18:08,007 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:18:08,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:18:08,130 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-22 20:18:08,130 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:18:08,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555773193] [2021-11-22 20:18:08,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555773193] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 20:18:08,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886830391] [2021-11-22 20:18:08,131 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-22 20:18:08,131 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:18:08,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:18:08,132 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 20:18:08,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-22 20:18:08,321 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-22 20:18:08,321 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 20:18:08,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 63 conjunts are in the unsatisfiable core [2021-11-22 20:18:08,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:18:08,363 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-22 20:18:08,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:18:08,400 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2021-11-22 20:18:08,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:18:08,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:18:08,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:18:08,431 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2021-11-22 20:18:08,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:18:08,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:18:08,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:18:08,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:18:08,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:18:08,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:18:08,474 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 47 [2021-11-22 20:18:08,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:18:08,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:18:08,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:18:08,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:18:08,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:18:08,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:18:08,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:18:08,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:18:08,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:18:08,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:18:08,521 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 56 [2021-11-22 20:18:08,596 INFO L354 Elim1Store]: treesize reduction 236, result has 15.7 percent of original size [2021-11-22 20:18:08,596 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 81 treesize of output 68 [2021-11-22 20:18:08,765 INFO L354 Elim1Store]: treesize reduction 112, result has 0.9 percent of original size [2021-11-22 20:18:08,765 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 77 treesize of output 19 [2021-11-22 20:18:08,797 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:18:08,797 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 20:18:09,482 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 5116 treesize of output 5092 [2021-11-22 20:23:27,275 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:23:27,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [886830391] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 20:23:27,276 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 20:23:27,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 29 [2021-11-22 20:23:27,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605871044] [2021-11-22 20:23:27,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 20:23:27,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-11-22 20:23:27,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:23:27,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-11-22 20:23:27,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=706, Unknown=0, NotChecked=0, Total=812 [2021-11-22 20:23:27,287 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand has 29 states, 29 states have (on average 1.8620689655172413) internal successors, (54), 29 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:23:28,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:23:28,298 INFO L93 Difference]: Finished difference Result 109 states and 129 transitions. [2021-11-22 20:23:28,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-22 20:23:28,299 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.8620689655172413) internal successors, (54), 29 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-22 20:23:28,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:23:28,299 INFO L225 Difference]: With dead ends: 109 [2021-11-22 20:23:28,299 INFO L226 Difference]: Without dead ends: 79 [2021-11-22 20:23:28,300 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=205, Invalid=1277, Unknown=0, NotChecked=0, Total=1482 [2021-11-22 20:23:28,300 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 46 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 93 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 20:23:28,300 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 441 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 276 Invalid, 0 Unknown, 93 Unchecked, 0.2s Time] [2021-11-22 20:23:28,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-11-22 20:23:28,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 47. [2021-11-22 20:23:28,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 45 states have (on average 1.2444444444444445) internal successors, (56), 46 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) [2021-11-22 20:23:28,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 56 transitions. [2021-11-22 20:23:28,308 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 56 transitions. Word has length 23 [2021-11-22 20:23:28,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:23:28,308 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 56 transitions. [2021-11-22 20:23:28,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.8620689655172413) internal successors, (54), 29 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:23:28,308 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 56 transitions. [2021-11-22 20:23:28,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-22 20:23:28,309 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:23:28,309 INFO L514 BasicCegarLoop]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:23:28,329 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-22 20:23:28,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:23:28,510 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 20:23:28,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:23:28,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1641954251, now seen corresponding path program 1 times [2021-11-22 20:23:28,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:23:28,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209806994] [2021-11-22 20:23:28,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:23:28,511 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:23:28,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:23:28,701 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:23:28,701 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:23:28,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209806994] [2021-11-22 20:23:28,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209806994] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 20:23:28,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902383083] [2021-11-22 20:23:28,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:23:28,701 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:23:28,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:23:28,702 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 20:23:28,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-22 20:23:28,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:23:28,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-22 20:23:28,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:23:28,836 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-22 20:23:28,836 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:23:28,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902383083] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:23:28,837 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-22 20:23:28,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2021-11-22 20:23:28,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110371920] [2021-11-22 20:23:28,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:23:28,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 20:23:28,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:23:28,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 20:23:28,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-11-22 20:23:28,838 INFO L87 Difference]: Start difference. First operand 47 states and 56 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:23:28,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:23:28,849 INFO L93 Difference]: Finished difference Result 69 states and 79 transitions. [2021-11-22 20:23:28,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 20:23:28,850 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 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 27 [2021-11-22 20:23:28,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:23:28,850 INFO L225 Difference]: With dead ends: 69 [2021-11-22 20:23:28,850 INFO L226 Difference]: Without dead ends: 57 [2021-11-22 20:23:28,851 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-11-22 20:23:28,851 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 8 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 20:23:28,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 47 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 20:23:28,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-11-22 20:23:28,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 48. [2021-11-22 20:23:28,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 46 states have (on average 1.2173913043478262) internal successors, (56), 47 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) [2021-11-22 20:23:28,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2021-11-22 20:23:28,856 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 27 [2021-11-22 20:23:28,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:23:28,856 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2021-11-22 20:23:28,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:23:28,857 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2021-11-22 20:23:28,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-22 20:23:28,857 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:23:28,857 INFO L514 BasicCegarLoop]: trace histogram [7, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:23:28,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-22 20:23:29,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:23:29,075 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 20:23:29,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:23:29,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1734437599, now seen corresponding path program 3 times [2021-11-22 20:23:29,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:23:29,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618206583] [2021-11-22 20:23:29,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:23:29,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:23:29,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:23:29,216 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-22 20:23:29,217 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:23:29,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618206583] [2021-11-22 20:23:29,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618206583] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 20:23:29,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961817562] [2021-11-22 20:23:29,217 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-22 20:23:29,217 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:23:29,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:23:29,225 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 20:23:29,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-22 20:23:29,530 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-22 20:23:29,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 20:23:29,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 81 conjunts are in the unsatisfiable core [2021-11-22 20:23:29,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:23:29,570 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-22 20:23:29,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:23:29,596 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2021-11-22 20:23:29,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:23:29,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:23:29,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:23:29,638 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2021-11-22 20:23:29,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:23:29,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:23:29,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:23:29,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:23:29,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:23:29,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:23:29,684 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2021-11-22 20:23:29,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:23:29,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:23:29,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:23:29,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:23:29,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:23:29,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:23:29,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:23:29,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:23:29,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:23:29,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:23:29,749 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 57 [2021-11-22 20:23:29,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:23:29,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:23:29,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:23:29,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:23:29,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:23:29,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:23:29,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:23:29,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:23:29,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:23:29,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:23:29,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:23:29,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:23:29,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:23:29,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:23:29,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:23:29,837 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 68 [2021-11-22 20:23:29,981 INFO L354 Elim1Store]: treesize reduction 320, result has 14.2 percent of original size [2021-11-22 20:23:29,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 102 treesize of output 80 [2021-11-22 20:23:30,396 INFO L354 Elim1Store]: treesize reduction 240, result has 0.4 percent of original size [2021-11-22 20:23:30,397 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 107 treesize of output 25 [2021-11-22 20:23:30,421 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:23:30,421 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 20:23:31,812 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 5224 treesize of output 5212 [2021-11-22 20:23:32,223 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:23:32,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [961817562] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 20:23:32,223 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 20:23:32,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 15, 16] total 37 [2021-11-22 20:23:32,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111100528] [2021-11-22 20:23:32,223 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 20:23:32,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-11-22 20:23:32,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:23:32,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-11-22 20:23:32,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=1144, Unknown=0, NotChecked=0, Total=1332 [2021-11-22 20:23:32,225 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand has 37 states, 37 states have (on average 1.7027027027027026) internal successors, (63), 37 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:24:26,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:24:26,040 INFO L93 Difference]: Finished difference Result 289 states and 335 transitions. [2021-11-22 20:24:26,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-11-22 20:24:26,040 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.7027027027027026) internal successors, (63), 37 states have internal predecessors, (63), 0 states have call successors, (0), 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 27 [2021-11-22 20:24:26,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:24:26,043 INFO L225 Difference]: With dead ends: 289 [2021-11-22 20:24:26,043 INFO L226 Difference]: Without dead ends: 262 [2021-11-22 20:24:26,046 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1501 ImplicationChecksByTransitivity, 43.9s TimeCoverageRelationStatistics Valid=1109, Invalid=6901, Unknown=0, NotChecked=0, Total=8010 [2021-11-22 20:24:26,046 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 1082 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1082 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.6s IncrementalHoareTripleChecker+Time [2021-11-22 20:24:26,047 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1082 Valid, 533 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 11.6s Time] [2021-11-22 20:24:26,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-11-22 20:24:26,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 62. [2021-11-22 20:24:26,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 60 states have (on average 1.25) internal successors, (75), 61 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:24:26,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 75 transitions. [2021-11-22 20:24:26,055 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 75 transitions. Word has length 27 [2021-11-22 20:24:26,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:24:26,056 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 75 transitions. [2021-11-22 20:24:26,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.7027027027027026) internal successors, (63), 37 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:24:26,056 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 75 transitions. [2021-11-22 20:24:26,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-22 20:24:26,056 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:24:26,057 INFO L514 BasicCegarLoop]: trace histogram [11, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:24:26,080 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-11-22 20:24:26,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:24:26,257 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 20:24:26,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:24:26,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1444491335, now seen corresponding path program 4 times [2021-11-22 20:24:26,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:24:26,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325395841] [2021-11-22 20:24:26,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:24:26,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:24:26,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:24:26,488 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-22 20:24:26,489 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:24:26,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325395841] [2021-11-22 20:24:26,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325395841] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 20:24:26,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165335681] [2021-11-22 20:24:26,489 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-22 20:24:26,489 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:24:26,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:24:26,491 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 20:24:26,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-22 20:24:26,833 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-22 20:24:26,833 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 20:24:26,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 101 conjunts are in the unsatisfiable core [2021-11-22 20:24:26,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:24:26,872 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-22 20:24:26,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:26,905 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2021-11-22 20:24:26,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:26,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:26,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:26,943 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2021-11-22 20:24:26,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:26,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:26,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:26,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:26,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:26,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:26,983 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2021-11-22 20:24:27,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,037 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 56 [2021-11-22 20:24:27,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,100 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 68 [2021-11-22 20:24:27,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,174 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 80 [2021-11-22 20:24:27,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,275 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 92 [2021-11-22 20:24:27,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,400 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 104 [2021-11-22 20:24:27,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:24:27,513 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 45 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 116 [2021-11-22 20:24:27,759 INFO L354 Elim1Store]: treesize reduction 776, result has 10.3 percent of original size [2021-11-22 20:24:27,759 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 55 case distinctions, treesize of input 162 treesize of output 128 [2021-11-22 20:24:28,117 INFO L354 Elim1Store]: treesize reduction 640, result has 0.2 percent of original size [2021-11-22 20:24:28,118 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 107 treesize of output 37 [2021-11-22 20:24:28,147 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:24:28,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 20:24:32,751 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 83696 treesize of output 83684 [2021-11-22 20:24:34,457 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:24:34,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165335681] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 20:24:34,457 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 20:24:34,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17, 19] total 46 [2021-11-22 20:24:34,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480732152] [2021-11-22 20:24:34,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 20:24:34,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-11-22 20:24:34,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:24:34,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-11-22 20:24:34,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=1844, Unknown=0, NotChecked=0, Total=2070 [2021-11-22 20:24:34,462 INFO L87 Difference]: Start difference. First operand 62 states and 75 transitions. Second operand has 46 states, 46 states have (on average 1.5434782608695652) internal successors, (71), 46 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:26:40,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:26:40,686 INFO L93 Difference]: Finished difference Result 446 states and 511 transitions. [2021-11-22 20:26:40,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2021-11-22 20:26:40,686 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.5434782608695652) internal successors, (71), 46 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-11-22 20:26:40,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:26:40,688 INFO L225 Difference]: With dead ends: 446 [2021-11-22 20:26:40,688 INFO L226 Difference]: Without dead ends: 408 [2021-11-22 20:26:40,692 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5456 ImplicationChecksByTransitivity, 123.5s TimeCoverageRelationStatistics Valid=2719, Invalid=19037, Unknown=0, NotChecked=0, Total=21756 [2021-11-22 20:26:40,692 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 2062 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 740 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2062 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2021-11-22 20:26:40,692 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2062 Valid, 525 Invalid, 979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 740 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2021-11-22 20:26:40,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2021-11-22 20:26:40,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 66. [2021-11-22 20:26:40,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 64 states have (on average 1.265625) internal successors, (81), 65 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:26:40,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 81 transitions. [2021-11-22 20:26:40,715 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 81 transitions. Word has length 28 [2021-11-22 20:26:40,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:26:40,715 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 81 transitions. [2021-11-22 20:26:40,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 1.5434782608695652) internal successors, (71), 46 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:26:40,715 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 81 transitions. [2021-11-22 20:26:40,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-22 20:26:40,718 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:26:40,718 INFO L514 BasicCegarLoop]: trace histogram [14, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:26:40,738 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-22 20:26:40,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:26:40,926 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 20:26:40,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:26:40,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1637796226, now seen corresponding path program 5 times [2021-11-22 20:26:40,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:26:40,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779393575] [2021-11-22 20:26:40,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:26:40,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:26:40,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:26:41,242 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-22 20:26:41,242 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:26:41,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779393575] [2021-11-22 20:26:41,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779393575] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 20:26:41,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160349415] [2021-11-22 20:26:41,242 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-22 20:26:41,243 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:26:41,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:26:41,243 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 20:26:41,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-22 20:27:22,281 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-11-22 20:27:22,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 20:27:22,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 130 conjunts are in the unsatisfiable core [2021-11-22 20:27:22,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:27:22,362 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-22 20:27:22,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,395 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2021-11-22 20:27:22,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,441 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2021-11-22 20:27:22,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,489 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 47 [2021-11-22 20:27:22,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,543 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 56 [2021-11-22 20:27:22,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,598 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 68 [2021-11-22 20:27:22,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,669 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 81 [2021-11-22 20:27:22,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,749 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 94 [2021-11-22 20:27:22,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 104 [2021-11-22 20:27:22,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:22,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 45 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 117 [2021-11-22 20:27:23,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,094 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 55 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 130 [2021-11-22 20:27:23,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,216 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 66 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 111 treesize of output 140 [2021-11-22 20:27:23,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:27:23,347 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 78 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 152 [2021-11-22 20:27:23,802 INFO L354 Elim1Store]: treesize reduction 1270, result has 8.4 percent of original size [2021-11-22 20:27:23,803 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 91 case distinctions, treesize of input 208 treesize of output 165 [2021-11-22 20:27:23,898 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-22 20:27:23,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 20:27:35,384 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 671720 treesize of output 671708 [2021-11-22 20:27:45,637 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:27:45,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [160349415] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 20:27:45,638 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 20:27:45,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 22] total 52 [2021-11-22 20:27:45,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323592344] [2021-11-22 20:27:45,638 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 20:27:45,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2021-11-22 20:27:45,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:27:45,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-11-22 20:27:45,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=480, Invalid=2172, Unknown=0, NotChecked=0, Total=2652 [2021-11-22 20:27:45,640 INFO L87 Difference]: Start difference. First operand 66 states and 81 transitions. Second operand has 52 states, 52 states have (on average 1.4038461538461537) internal successors, (73), 52 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:28:01,934 WARN L227 SmtUtils]: Spent 10.46s on a formula simplification. DAG size of input: 256 DAG size of output: 105 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-22 20:30:57,712 WARN L227 SmtUtils]: Spent 2.60m on a formula simplification that was a NOOP. DAG size: 277 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-22 20:30:59,721 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 20:31:01,739 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15