./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be64_harness.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_byte_cursor_read_be64_harness.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 9b90640eabcf61bf9b6c4e01fcd2a39b8b829676407f71504872cd65ce1f895a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-fcb8e13 [2021-11-22 19:59:14,009 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 19:59:14,015 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 19:59:14,054 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 19:59:14,056 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 19:59:14,059 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 19:59:14,060 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 19:59:14,063 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 19:59:14,065 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 19:59:14,068 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 19:59:14,068 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 19:59:14,069 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 19:59:14,070 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 19:59:14,071 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 19:59:14,073 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 19:59:14,077 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 19:59:14,078 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 19:59:14,078 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 19:59:14,082 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 19:59:14,088 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 19:59:14,089 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 19:59:14,089 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 19:59:14,091 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 19:59:14,091 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 19:59:14,096 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 19:59:14,096 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 19:59:14,096 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 19:59:14,097 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 19:59:14,098 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 19:59:14,098 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 19:59:14,099 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 19:59:14,099 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 19:59:14,100 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 19:59:14,101 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 19:59:14,103 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 19:59:14,103 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 19:59:14,103 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 19:59:14,104 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 19:59:14,104 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 19:59:14,104 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 19:59:14,105 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 19:59:14,106 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-22 19:59:14,133 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 19:59:14,133 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 19:59:14,133 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 19:59:14,133 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 19:59:14,134 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 19:59:14,134 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 19:59:14,134 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 19:59:14,135 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 19:59:14,135 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 19:59:14,135 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 19:59:14,135 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 19:59:14,135 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 19:59:14,135 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 19:59:14,135 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 19:59:14,135 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 19:59:14,135 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 19:59:14,135 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 19:59:14,135 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 19:59:14,136 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 19:59:14,136 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 19:59:14,136 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 19:59:14,136 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 19:59:14,136 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 19:59:14,136 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 19:59:14,136 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 19:59:14,136 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 19:59:14,136 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 19:59:14,136 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 19:59:14,136 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 19:59:14,137 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9b90640eabcf61bf9b6c4e01fcd2a39b8b829676407f71504872cd65ce1f895a [2021-11-22 19:59:14,321 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 19:59:14,338 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 19:59:14,341 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 19:59:14,342 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 19:59:14,343 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 19:59:14,344 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be64_harness.i [2021-11-22 19:59:14,410 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c133817d4/e45fb80d100046e89daacf0670c18558/FLAGd367ae0e5 [2021-11-22 19:59:14,895 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 19:59:14,896 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be64_harness.i [2021-11-22 19:59:14,927 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c133817d4/e45fb80d100046e89daacf0670c18558/FLAGd367ae0e5 [2021-11-22 19:59:15,152 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c133817d4/e45fb80d100046e89daacf0670c18558 [2021-11-22 19:59:15,155 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 19:59:15,157 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 19:59:15,160 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 19:59:15,160 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 19:59:15,163 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 19:59:15,163 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 07:59:15" (1/1) ... [2021-11-22 19:59:15,164 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58e85749 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:59:15, skipping insertion in model container [2021-11-22 19:59:15,164 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 07:59:15" (1/1) ... [2021-11-22 19:59:15,168 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 19:59:15,237 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 19:59:15,436 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_byte_cursor_read_be64_harness.i[4499,4512] [2021-11-22 19:59:15,442 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_byte_cursor_read_be64_harness.i[4559,4572] [2021-11-22 19:59:15,986 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:59:15,987 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:59:15,987 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:59:15,988 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:59:15,989 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:59:15,996 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:59:15,996 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:59:15,997 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:59:15,998 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:59:16,195 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-22 19:59:16,195 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-22 19:59:16,196 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-22 19:59:16,197 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-22 19:59:16,198 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-22 19:59:16,198 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-22 19:59:16,198 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-22 19:59:16,199 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-22 19:59:16,199 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-22 19:59:16,200 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-22 19:59:16,309 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-22 19:59:16,428 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:59:16,429 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:59:16,493 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 19:59:16,537 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 19:59:16,555 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_byte_cursor_read_be64_harness.i[4499,4512] [2021-11-22 19:59:16,555 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_byte_cursor_read_be64_harness.i[4559,4572] [2021-11-22 19:59:16,584 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:59:16,585 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:59:16,586 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:59:16,586 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:59:16,587 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:59:16,592 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:59:16,593 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:59:16,593 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:59:16,594 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:59:16,619 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-22 19:59:16,620 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-22 19:59:16,621 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-22 19:59:16,621 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-22 19:59:16,621 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-22 19:59:16,622 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-22 19:59:16,622 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-22 19:59:16,622 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-22 19:59:16,623 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-22 19:59:16,623 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-22 19:59:16,641 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-22 19:59:16,705 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:59:16,707 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:59:16,730 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 19:59:16,899 INFO L208 MainTranslator]: Completed translation [2021-11-22 19:59:16,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:59:16 WrapperNode [2021-11-22 19:59:16,899 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 19:59:16,900 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 19:59:16,900 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 19:59:16,900 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 19:59:16,905 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:59:16" (1/1) ... [2021-11-22 19:59:16,982 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:59:16" (1/1) ... [2021-11-22 19:59:17,087 INFO L137 Inliner]: procedures = 691, calls = 2645, calls flagged for inlining = 958, calls inlined = 64, statements flattened = 1552 [2021-11-22 19:59:17,088 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 19:59:17,088 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 19:59:17,089 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 19:59:17,089 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 19:59:17,094 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:59:16" (1/1) ... [2021-11-22 19:59:17,095 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:59:16" (1/1) ... [2021-11-22 19:59:17,107 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:59:16" (1/1) ... [2021-11-22 19:59:17,108 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:59:16" (1/1) ... [2021-11-22 19:59:17,151 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:59:16" (1/1) ... [2021-11-22 19:59:17,157 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:59:16" (1/1) ... [2021-11-22 19:59:17,162 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:59:16" (1/1) ... [2021-11-22 19:59:17,173 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 19:59:17,174 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 19:59:17,174 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 19:59:17,174 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 19:59:17,175 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:59:16" (1/1) ... [2021-11-22 19:59:17,180 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 19:59:17,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 19:59:17,198 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 19:59:17,206 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 19:59:17,232 INFO L130 BoogieDeclarations]: Found specification of procedure htonl [2021-11-22 19:59:17,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-22 19:59:17,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2021-11-22 19:59:17,232 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-22 19:59:17,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-22 19:59:17,232 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-22 19:59:17,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-22 19:59:17,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 19:59:17,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-22 19:59:17,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 19:59:17,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 19:59:17,233 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-22 19:59:17,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-22 19:59:17,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-22 19:59:17,235 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-22 19:59:17,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-22 19:59:17,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-22 19:59:17,235 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real [2021-11-22 19:59:17,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 19:59:17,461 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 19:59:17,464 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 19:59:18,535 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 19:59:18,540 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 19:59:18,540 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-22 19:59:18,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 07:59:18 BoogieIcfgContainer [2021-11-22 19:59:18,541 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 19:59:18,543 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 19:59:18,543 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 19:59:18,545 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 19:59:18,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 07:59:15" (1/3) ... [2021-11-22 19:59:18,546 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aecd32c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 07:59:18, skipping insertion in model container [2021-11-22 19:59:18,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:59:16" (2/3) ... [2021-11-22 19:59:18,547 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aecd32c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 07:59:18, skipping insertion in model container [2021-11-22 19:59:18,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 07:59:18" (3/3) ... [2021-11-22 19:59:18,548 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_read_be64_harness.i [2021-11-22 19:59:18,556 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 19:59:18,558 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2021-11-22 19:59:18,603 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 19:59:18,619 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 19:59:18,620 INFO L340 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2021-11-22 19:59:18,637 INFO L276 IsEmpty]: Start isEmpty. Operand has 246 states, 231 states have (on average 1.4718614718614718) internal successors, (340), 245 states have internal predecessors, (340), 0 states have call successors, (0), 0 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 19:59:18,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-22 19:59:18,645 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:59:18,646 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:59:18,646 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-22 19:59:18,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:59:18,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1384509862, now seen corresponding path program 1 times [2021-11-22 19:59:18,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:59:18,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883310863] [2021-11-22 19:59:18,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:59:18,658 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:59:18,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:59:19,070 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 19:59:19,071 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:59:19,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883310863] [2021-11-22 19:59:19,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883310863] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:59:19,072 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:59:19,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 19:59:19,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803544923] [2021-11-22 19:59:19,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:59:19,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-22 19:59:19,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:59:19,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-22 19:59:19,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 19:59:19,107 INFO L87 Difference]: Start difference. First operand has 246 states, 231 states have (on average 1.4718614718614718) internal successors, (340), 245 states have internal predecessors, (340), 0 states have call successors, (0), 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 28.5) internal successors, (57), 2 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:59:19,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:59:19,148 INFO L93 Difference]: Finished difference Result 487 states and 673 transitions. [2021-11-22 19:59:19,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 19:59:19,150 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-22 19:59:19,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:59:19,160 INFO L225 Difference]: With dead ends: 487 [2021-11-22 19:59:19,160 INFO L226 Difference]: Without dead ends: 240 [2021-11-22 19:59:19,163 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 19:59:19,169 INFO L933 BasicCegarLoop]: 313 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, 313 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 19:59:19,170 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 19:59:19,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2021-11-22 19:59:19,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2021-11-22 19:59:19,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 226 states have (on average 1.3584070796460177) internal successors, (307), 239 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 19:59:19,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 307 transitions. [2021-11-22 19:59:19,219 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 307 transitions. Word has length 57 [2021-11-22 19:59:19,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:59:19,220 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 307 transitions. [2021-11-22 19:59:19,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:59:19,220 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 307 transitions. [2021-11-22 19:59:19,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-22 19:59:19,228 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:59:19,228 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:59:19,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 19:59:19,228 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-22 19:59:19,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:59:19,229 INFO L85 PathProgramCache]: Analyzing trace with hash -110980262, now seen corresponding path program 1 times [2021-11-22 19:59:19,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:59:19,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149581381] [2021-11-22 19:59:19,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:59:19,230 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:59:19,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:59:19,403 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 19:59:19,403 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:59:19,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149581381] [2021-11-22 19:59:19,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149581381] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:59:19,404 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:59:19,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 19:59:19,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891169260] [2021-11-22 19:59:19,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:59:19,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 19:59:19,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:59:19,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 19:59:19,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-22 19:59:19,409 INFO L87 Difference]: Start difference. First operand 240 states and 307 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:59:19,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:59:19,513 INFO L93 Difference]: Finished difference Result 455 states and 582 transitions. [2021-11-22 19:59:19,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 19:59:19,514 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-22 19:59:19,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:59:19,515 INFO L225 Difference]: With dead ends: 455 [2021-11-22 19:59:19,515 INFO L226 Difference]: Without dead ends: 240 [2021-11-22 19:59:19,516 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-22 19:59:19,517 INFO L933 BasicCegarLoop]: 290 mSDtfsCounter, 286 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 19:59:19,517 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [286 Valid, 429 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 19:59:19,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2021-11-22 19:59:19,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2021-11-22 19:59:19,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 226 states have (on average 1.345132743362832) internal successors, (304), 239 states have internal predecessors, (304), 0 states have call successors, (0), 0 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 19:59:19,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 304 transitions. [2021-11-22 19:59:19,524 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 304 transitions. Word has length 57 [2021-11-22 19:59:19,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:59:19,525 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 304 transitions. [2021-11-22 19:59:19,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:59:19,525 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 304 transitions. [2021-11-22 19:59:19,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-22 19:59:19,526 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:59:19,526 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:59:19,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 19:59:19,527 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-22 19:59:19,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:59:19,527 INFO L85 PathProgramCache]: Analyzing trace with hash -452004592, now seen corresponding path program 1 times [2021-11-22 19:59:19,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:59:19,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126014119] [2021-11-22 19:59:19,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:59:19,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:59:19,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:59:19,726 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 19:59:19,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:59:19,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126014119] [2021-11-22 19:59:19,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126014119] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:59:19,727 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:59:19,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 19:59:19,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479290580] [2021-11-22 19:59:19,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:59:19,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 19:59:19,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:59:19,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 19:59:19,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 19:59:19,728 INFO L87 Difference]: Start difference. First operand 240 states and 304 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 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 19:59:19,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:59:19,811 INFO L93 Difference]: Finished difference Result 409 states and 518 transitions. [2021-11-22 19:59:19,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 19:59:19,811 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2021-11-22 19:59:19,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:59:19,813 INFO L225 Difference]: With dead ends: 409 [2021-11-22 19:59:19,813 INFO L226 Difference]: Without dead ends: 240 [2021-11-22 19:59:19,814 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-22 19:59:19,815 INFO L933 BasicCegarLoop]: 284 mSDtfsCounter, 623 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 623 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 19:59:19,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [623 Valid, 475 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 19:59:19,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2021-11-22 19:59:19,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2021-11-22 19:59:19,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 226 states have (on average 1.336283185840708) internal successors, (302), 239 states have internal predecessors, (302), 0 states have call successors, (0), 0 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 19:59:19,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 302 transitions. [2021-11-22 19:59:19,822 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 302 transitions. Word has length 61 [2021-11-22 19:59:19,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:59:19,823 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 302 transitions. [2021-11-22 19:59:19,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 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 19:59:19,823 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 302 transitions. [2021-11-22 19:59:19,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-22 19:59:19,826 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:59:19,826 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:59:19,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-22 19:59:19,826 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-22 19:59:19,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:59:19,827 INFO L85 PathProgramCache]: Analyzing trace with hash 263418325, now seen corresponding path program 1 times [2021-11-22 19:59:19,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:59:19,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577795401] [2021-11-22 19:59:19,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:59:19,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:59:19,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:59:20,062 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 19:59:20,063 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:59:20,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577795401] [2021-11-22 19:59:20,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577795401] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:59:20,063 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:59:20,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 19:59:20,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69859299] [2021-11-22 19:59:20,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:59:20,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 19:59:20,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:59:20,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 19:59:20,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-22 19:59:20,065 INFO L87 Difference]: Start difference. First operand 240 states and 302 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 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 19:59:20,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:59:20,158 INFO L93 Difference]: Finished difference Result 394 states and 495 transitions. [2021-11-22 19:59:20,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-22 19:59:20,159 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 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 63 [2021-11-22 19:59:20,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:59:20,163 INFO L225 Difference]: With dead ends: 394 [2021-11-22 19:59:20,164 INFO L226 Difference]: Without dead ends: 240 [2021-11-22 19:59:20,164 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-22 19:59:20,166 INFO L933 BasicCegarLoop]: 275 mSDtfsCounter, 835 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 835 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 19:59:20,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [835 Valid, 534 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 19:59:20,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2021-11-22 19:59:20,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2021-11-22 19:59:20,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 226 states have (on average 1.323008849557522) internal successors, (299), 239 states have internal predecessors, (299), 0 states have call successors, (0), 0 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 19:59:20,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 299 transitions. [2021-11-22 19:59:20,184 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 299 transitions. Word has length 63 [2021-11-22 19:59:20,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:59:20,185 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 299 transitions. [2021-11-22 19:59:20,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 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 19:59:20,185 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 299 transitions. [2021-11-22 19:59:20,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-22 19:59:20,188 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:59:20,188 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:59:20,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-22 19:59:20,188 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-22 19:59:20,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:59:20,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1353991184, now seen corresponding path program 1 times [2021-11-22 19:59:20,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:59:20,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324809609] [2021-11-22 19:59:20,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:59:20,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:59:20,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:59:20,363 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 19:59:20,363 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:59:20,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324809609] [2021-11-22 19:59:20,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324809609] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:59:20,364 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:59:20,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-22 19:59:20,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321304351] [2021-11-22 19:59:20,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:59:20,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 19:59:20,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:59:20,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 19:59:20,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-22 19:59:20,365 INFO L87 Difference]: Start difference. First operand 240 states and 299 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:59:20,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:59:20,517 INFO L93 Difference]: Finished difference Result 377 states and 466 transitions. [2021-11-22 19:59:20,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-22 19:59:20,518 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-22 19:59:20,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:59:20,520 INFO L225 Difference]: With dead ends: 377 [2021-11-22 19:59:20,520 INFO L226 Difference]: Without dead ends: 240 [2021-11-22 19:59:20,521 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-11-22 19:59:20,523 INFO L933 BasicCegarLoop]: 268 mSDtfsCounter, 1027 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1027 SdHoareTripleChecker+Valid, 608 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 19:59:20,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1027 Valid, 608 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 19:59:20,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2021-11-22 19:59:20,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2021-11-22 19:59:20,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 226 states have (on average 1.3185840707964602) internal successors, (298), 239 states have internal predecessors, (298), 0 states have call successors, (0), 0 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 19:59:20,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 298 transitions. [2021-11-22 19:59:20,530 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 298 transitions. Word has length 65 [2021-11-22 19:59:20,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:59:20,531 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 298 transitions. [2021-11-22 19:59:20,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:59:20,531 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 298 transitions. [2021-11-22 19:59:20,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-22 19:59:20,532 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:59:20,532 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:59:20,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-22 19:59:20,532 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-22 19:59:20,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:59:20,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1880797653, now seen corresponding path program 1 times [2021-11-22 19:59:20,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:59:20,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918125201] [2021-11-22 19:59:20,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:59:20,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:59:20,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:59:20,734 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 19:59:20,734 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:59:20,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918125201] [2021-11-22 19:59:20,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918125201] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:59:20,735 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:59:20,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 19:59:20,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596305375] [2021-11-22 19:59:20,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:59:20,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 19:59:20,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:59:20,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 19:59:20,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-22 19:59:20,736 INFO L87 Difference]: Start difference. First operand 240 states and 298 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 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 19:59:21,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:59:21,004 INFO L93 Difference]: Finished difference Result 447 states and 539 transitions. [2021-11-22 19:59:21,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 19:59:21,005 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2021-11-22 19:59:21,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:59:21,006 INFO L225 Difference]: With dead ends: 447 [2021-11-22 19:59:21,006 INFO L226 Difference]: Without dead ends: 431 [2021-11-22 19:59:21,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-22 19:59:21,007 INFO L933 BasicCegarLoop]: 299 mSDtfsCounter, 342 mSDsluCounter, 904 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 1203 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 19:59:21,008 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [342 Valid, 1203 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 19:59:21,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2021-11-22 19:59:21,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 260. [2021-11-22 19:59:21,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 246 states have (on average 1.2886178861788617) internal successors, (317), 259 states have internal predecessors, (317), 0 states have call successors, (0), 0 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 19:59:21,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 317 transitions. [2021-11-22 19:59:21,015 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 317 transitions. Word has length 67 [2021-11-22 19:59:21,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:59:21,016 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 317 transitions. [2021-11-22 19:59:21,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 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 19:59:21,016 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 317 transitions. [2021-11-22 19:59:21,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-22 19:59:21,017 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:59:21,017 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:59:21,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-22 19:59:21,017 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-22 19:59:21,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:59:21,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1960839459, now seen corresponding path program 1 times [2021-11-22 19:59:21,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:59:21,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123343923] [2021-11-22 19:59:21,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:59:21,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:59:21,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:59:21,286 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 19:59:21,287 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:59:21,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123343923] [2021-11-22 19:59:21,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123343923] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:59:21,287 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:59:21,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 19:59:21,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339211437] [2021-11-22 19:59:21,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:59:21,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 19:59:21,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:59:21,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 19:59:21,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 19:59:21,289 INFO L87 Difference]: Start difference. First operand 260 states and 317 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 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 19:59:21,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:59:21,398 INFO L93 Difference]: Finished difference Result 480 states and 587 transitions. [2021-11-22 19:59:21,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 19:59:21,399 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 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 71 [2021-11-22 19:59:21,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:59:21,399 INFO L225 Difference]: With dead ends: 480 [2021-11-22 19:59:21,400 INFO L226 Difference]: Without dead ends: 261 [2021-11-22 19:59:21,400 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 19:59:21,400 INFO L933 BasicCegarLoop]: 296 mSDtfsCounter, 0 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 583 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 19:59:21,400 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 583 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 19:59:21,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2021-11-22 19:59:21,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 261. [2021-11-22 19:59:21,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 247 states have (on average 1.2874493927125505) internal successors, (318), 260 states have internal predecessors, (318), 0 states have call successors, (0), 0 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 19:59:21,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 318 transitions. [2021-11-22 19:59:21,408 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 318 transitions. Word has length 71 [2021-11-22 19:59:21,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:59:21,409 INFO L470 AbstractCegarLoop]: Abstraction has 261 states and 318 transitions. [2021-11-22 19:59:21,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 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 19:59:21,409 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 318 transitions. [2021-11-22 19:59:21,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-22 19:59:21,409 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:59:21,410 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:59:21,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-22 19:59:21,410 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-22 19:59:21,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:59:21,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1263514824, now seen corresponding path program 1 times [2021-11-22 19:59:21,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:59:21,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315695908] [2021-11-22 19:59:21,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:59:21,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:59:21,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:59:21,604 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 19:59:21,604 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:59:21,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315695908] [2021-11-22 19:59:21,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315695908] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 19:59:21,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219819860] [2021-11-22 19:59:21,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:59:21,605 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 19:59:21,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 19:59:21,606 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 19:59:21,613 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 19:59:22,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:59:22,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 2834 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-22 19:59:22,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 19:59:22,223 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 19:59:22,223 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 19:59:22,349 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:59:22,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1219819860] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-22 19:59:22,349 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-22 19:59:22,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 5] total 8 [2021-11-22 19:59:22,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146529300] [2021-11-22 19:59:22,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:59:22,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 19:59:22,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:59:22,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 19:59:22,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-22 19:59:22,353 INFO L87 Difference]: Start difference. First operand 261 states and 318 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:59:22,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:59:22,552 INFO L93 Difference]: Finished difference Result 588 states and 714 transitions. [2021-11-22 19:59:22,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 19:59:22,552 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-22 19:59:22,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:59:22,554 INFO L225 Difference]: With dead ends: 588 [2021-11-22 19:59:22,554 INFO L226 Difference]: Without dead ends: 370 [2021-11-22 19:59:22,554 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-22 19:59:22,555 INFO L933 BasicCegarLoop]: 317 mSDtfsCounter, 246 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 718 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 19:59:22,555 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [246 Valid, 718 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 19:59:22,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2021-11-22 19:59:22,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 264. [2021-11-22 19:59:22,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 250 states have (on average 1.288) internal successors, (322), 263 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:59:22,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 322 transitions. [2021-11-22 19:59:22,561 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 322 transitions. Word has length 72 [2021-11-22 19:59:22,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:59:22,561 INFO L470 AbstractCegarLoop]: Abstraction has 264 states and 322 transitions. [2021-11-22 19:59:22,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:59:22,562 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 322 transitions. [2021-11-22 19:59:22,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-22 19:59:22,562 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:59:22,562 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:59:22,586 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 19:59:22,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 19:59:22,780 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-22 19:59:22,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:59:22,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1069207233, now seen corresponding path program 1 times [2021-11-22 19:59:22,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:59:22,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023066966] [2021-11-22 19:59:22,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:59:22,780 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:59:22,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:59:22,984 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-22 19:59:22,984 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:59:22,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023066966] [2021-11-22 19:59:22,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023066966] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 19:59:22,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413143270] [2021-11-22 19:59:22,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:59:22,985 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 19:59:22,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 19:59:22,986 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 19:59:23,019 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 19:59:23,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:59:23,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 2857 conjuncts, 37 conjunts are in the unsatisfiable core [2021-11-22 19:59:23,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 19:59:23,628 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-22 19:59:23,628 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 19:59:23,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [413143270] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:59:23,629 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-22 19:59:23,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2021-11-22 19:59:23,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399726775] [2021-11-22 19:59:23,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:59:23,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 19:59:23,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:59:23,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 19:59:23,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-22 19:59:23,630 INFO L87 Difference]: Start difference. First operand 264 states and 322 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 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 19:59:24,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:59:24,176 INFO L93 Difference]: Finished difference Result 546 states and 666 transitions. [2021-11-22 19:59:24,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-22 19:59:24,177 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 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) Word has length 73 [2021-11-22 19:59:24,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:59:24,178 INFO L225 Difference]: With dead ends: 546 [2021-11-22 19:59:24,179 INFO L226 Difference]: Without dead ends: 306 [2021-11-22 19:59:24,179 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-11-22 19:59:24,179 INFO L933 BasicCegarLoop]: 254 mSDtfsCounter, 472 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 1038 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-22 19:59:24,180 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [472 Valid, 1038 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 337 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-22 19:59:24,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2021-11-22 19:59:24,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 264. [2021-11-22 19:59:24,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 250 states have (on average 1.284) internal successors, (321), 263 states have internal predecessors, (321), 0 states have call successors, (0), 0 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 19:59:24,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 321 transitions. [2021-11-22 19:59:24,197 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 321 transitions. Word has length 73 [2021-11-22 19:59:24,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:59:24,197 INFO L470 AbstractCegarLoop]: Abstraction has 264 states and 321 transitions. [2021-11-22 19:59:24,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 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 19:59:24,197 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 321 transitions. [2021-11-22 19:59:24,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-22 19:59:24,198 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:59:24,198 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:59:24,219 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 19:59:24,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-11-22 19:59:24,412 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-22 19:59:24,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:59:24,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1536345721, now seen corresponding path program 1 times [2021-11-22 19:59:24,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:59:24,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995081229] [2021-11-22 19:59:24,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:59:24,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:59:24,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:59:24,625 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-22 19:59:24,625 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:59:24,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995081229] [2021-11-22 19:59:24,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995081229] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 19:59:24,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244498198] [2021-11-22 19:59:24,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:59:24,626 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 19:59:24,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 19:59:24,627 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 19:59:24,628 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 19:59:25,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:59:25,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 2869 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-22 19:59:25,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 19:59:25,169 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-22 19:59:25,169 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 19:59:25,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [244498198] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:59:25,170 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-22 19:59:25,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2021-11-22 19:59:25,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209650909] [2021-11-22 19:59:25,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:59:25,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 19:59:25,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:59:25,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 19:59:25,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-22 19:59:25,171 INFO L87 Difference]: Start difference. First operand 264 states and 321 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:59:25,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:59:25,404 INFO L93 Difference]: Finished difference Result 627 states and 746 transitions. [2021-11-22 19:59:25,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-22 19:59:25,404 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-22 19:59:25,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:59:25,405 INFO L225 Difference]: With dead ends: 627 [2021-11-22 19:59:25,405 INFO L226 Difference]: Without dead ends: 371 [2021-11-22 19:59:25,406 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-22 19:59:25,406 INFO L933 BasicCegarLoop]: 345 mSDtfsCounter, 194 mSDsluCounter, 1374 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 1719 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 19:59:25,406 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [194 Valid, 1719 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 19:59:25,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2021-11-22 19:59:25,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 264. [2021-11-22 19:59:25,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 250 states have (on average 1.268) internal successors, (317), 263 states have internal predecessors, (317), 0 states have call successors, (0), 0 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 19:59:25,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 317 transitions. [2021-11-22 19:59:25,414 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 317 transitions. Word has length 77 [2021-11-22 19:59:25,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:59:25,414 INFO L470 AbstractCegarLoop]: Abstraction has 264 states and 317 transitions. [2021-11-22 19:59:25,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:59:25,414 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 317 transitions. [2021-11-22 19:59:25,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-22 19:59:25,415 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:59:25,415 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:59:25,439 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 19:59:25,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 19:59:25,631 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-22 19:59:25,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:59:25,631 INFO L85 PathProgramCache]: Analyzing trace with hash 583157586, now seen corresponding path program 1 times [2021-11-22 19:59:25,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:59:25,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549951867] [2021-11-22 19:59:25,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:59:25,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:59:25,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:59:25,859 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-22 19:59:25,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:59:25,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549951867] [2021-11-22 19:59:25,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549951867] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 19:59:25,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666926312] [2021-11-22 19:59:25,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:59:25,860 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 19:59:25,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 19:59:25,864 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 19:59:25,865 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 19:59:26,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:59:26,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 2879 conjuncts, 52 conjunts are in the unsatisfiable core [2021-11-22 19:59:26,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 19:59:26,873 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 49 treesize of output 41 [2021-11-22 19:59:26,878 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 38 treesize of output 30 [2021-11-22 19:59:26,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2021-11-22 19:59:26,976 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-22 19:59:26,977 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 19:59:26,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [666926312] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:59:26,977 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-22 19:59:26,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [4] total 14 [2021-11-22 19:59:26,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753355121] [2021-11-22 19:59:26,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:59:26,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-22 19:59:26,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:59:26,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-22 19:59:26,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-11-22 19:59:26,978 INFO L87 Difference]: Start difference. First operand 264 states and 317 transitions. Second operand has 12 states, 12 states have (on average 6.583333333333333) internal successors, (79), 11 states have internal predecessors, (79), 0 states have call successors, (0), 0 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 19:59:29,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:59:29,259 INFO L93 Difference]: Finished difference Result 864 states and 1035 transitions. [2021-11-22 19:59:29,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-22 19:59:29,260 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.583333333333333) internal successors, (79), 11 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2021-11-22 19:59:29,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:59:29,262 INFO L225 Difference]: With dead ends: 864 [2021-11-22 19:59:29,262 INFO L226 Difference]: Without dead ends: 639 [2021-11-22 19:59:29,263 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=309, Invalid=813, Unknown=0, NotChecked=0, Total=1122 [2021-11-22 19:59:29,263 INFO L933 BasicCegarLoop]: 561 mSDtfsCounter, 978 mSDsluCounter, 1836 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 978 SdHoareTripleChecker+Valid, 2397 SdHoareTripleChecker+Invalid, 1091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-22 19:59:29,263 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [978 Valid, 2397 Invalid, 1091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1063 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-22 19:59:29,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2021-11-22 19:59:29,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 281. [2021-11-22 19:59:29,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 267 states have (on average 1.2546816479400749) internal successors, (335), 280 states have internal predecessors, (335), 0 states have call successors, (0), 0 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 19:59:29,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 335 transitions. [2021-11-22 19:59:29,272 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 335 transitions. Word has length 79 [2021-11-22 19:59:29,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:59:29,272 INFO L470 AbstractCegarLoop]: Abstraction has 281 states and 335 transitions. [2021-11-22 19:59:29,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.583333333333333) internal successors, (79), 11 states have internal predecessors, (79), 0 states have call successors, (0), 0 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 19:59:29,272 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 335 transitions. [2021-11-22 19:59:29,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-22 19:59:29,273 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:59:29,273 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:59:29,294 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 19:59:29,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 19:59:29,482 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-22 19:59:29,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:59:29,482 INFO L85 PathProgramCache]: Analyzing trace with hash -632996140, now seen corresponding path program 1 times [2021-11-22 19:59:29,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:59:29,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516207027] [2021-11-22 19:59:29,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:59:29,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:59:29,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:59:29,561 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-22 19:59:29,561 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:59:29,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516207027] [2021-11-22 19:59:29,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516207027] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:59:29,561 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:59:29,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 19:59:29,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512977362] [2021-11-22 19:59:29,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:59:29,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 19:59:29,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:59:29,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 19:59:29,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 19:59:29,563 INFO L87 Difference]: Start difference. First operand 281 states and 335 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 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 19:59:29,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:59:29,671 INFO L93 Difference]: Finished difference Result 563 states and 671 transitions. [2021-11-22 19:59:29,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 19:59:29,672 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2021-11-22 19:59:29,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:59:29,673 INFO L225 Difference]: With dead ends: 563 [2021-11-22 19:59:29,673 INFO L226 Difference]: Without dead ends: 312 [2021-11-22 19:59:29,674 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 19:59:29,674 INFO L933 BasicCegarLoop]: 298 mSDtfsCounter, 46 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 19:59:29,675 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 753 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 19:59:29,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2021-11-22 19:59:29,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 276. [2021-11-22 19:59:29,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 262 states have (on average 1.2366412213740459) internal successors, (324), 275 states have internal predecessors, (324), 0 states have call successors, (0), 0 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 19:59:29,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 324 transitions. [2021-11-22 19:59:29,683 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 324 transitions. Word has length 79 [2021-11-22 19:59:29,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:59:29,683 INFO L470 AbstractCegarLoop]: Abstraction has 276 states and 324 transitions. [2021-11-22 19:59:29,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 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 19:59:29,684 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 324 transitions. [2021-11-22 19:59:29,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-22 19:59:29,684 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:59:29,684 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:59:29,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-22 19:59:29,685 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-22 19:59:29,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:59:29,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1116437089, now seen corresponding path program 1 times [2021-11-22 19:59:29,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:59:29,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73384224] [2021-11-22 19:59:29,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:59:29,685 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:59:29,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:59:29,916 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-22 19:59:29,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:59:29,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73384224] [2021-11-22 19:59:29,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73384224] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:59:29,916 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:59:29,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 19:59:29,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075596892] [2021-11-22 19:59:29,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:59:29,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 19:59:29,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:59:29,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 19:59:29,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-22 19:59:29,918 INFO L87 Difference]: Start difference. First operand 276 states and 324 transitions. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 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 19:59:30,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:59:30,241 INFO L93 Difference]: Finished difference Result 538 states and 632 transitions. [2021-11-22 19:59:30,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 19:59:30,242 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-11-22 19:59:30,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:59:30,243 INFO L225 Difference]: With dead ends: 538 [2021-11-22 19:59:30,243 INFO L226 Difference]: Without dead ends: 276 [2021-11-22 19:59:30,243 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-22 19:59:30,243 INFO L933 BasicCegarLoop]: 279 mSDtfsCounter, 39 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 1036 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 19:59:30,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 1036 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-22 19:59:30,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2021-11-22 19:59:30,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 276. [2021-11-22 19:59:30,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 262 states have (on average 1.2328244274809161) internal successors, (323), 275 states have internal predecessors, (323), 0 states have call successors, (0), 0 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 19:59:30,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 323 transitions. [2021-11-22 19:59:30,250 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 323 transitions. Word has length 82 [2021-11-22 19:59:30,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:59:30,250 INFO L470 AbstractCegarLoop]: Abstraction has 276 states and 323 transitions. [2021-11-22 19:59:30,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 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 19:59:30,250 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 323 transitions. [2021-11-22 19:59:30,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-22 19:59:30,251 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:59:30,251 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:59:30,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-22 19:59:30,252 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-22 19:59:30,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:59:30,252 INFO L85 PathProgramCache]: Analyzing trace with hash -368445301, now seen corresponding path program 1 times [2021-11-22 19:59:30,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:59:30,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135038888] [2021-11-22 19:59:30,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:59:30,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:59:30,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:59:30,467 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-22 19:59:30,467 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:59:30,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135038888] [2021-11-22 19:59:30,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135038888] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 19:59:30,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377723262] [2021-11-22 19:59:30,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:59:30,468 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 19:59:30,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 19:59:30,471 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 19:59:30,480 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 19:59:30,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:59:30,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 2948 conjuncts, 37 conjunts are in the unsatisfiable core [2021-11-22 19:59:30,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 19:59:31,163 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-22 19:59:31,163 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 19:59:31,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [377723262] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:59:31,164 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-22 19:59:31,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4] total 8 [2021-11-22 19:59:31,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185754057] [2021-11-22 19:59:31,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:59:31,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 19:59:31,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:59:31,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 19:59:31,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-22 19:59:31,165 INFO L87 Difference]: Start difference. First operand 276 states and 323 transitions. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 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 19:59:31,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:59:31,218 INFO L93 Difference]: Finished difference Result 545 states and 638 transitions. [2021-11-22 19:59:31,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 19:59:31,218 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-11-22 19:59:31,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:59:31,219 INFO L225 Difference]: With dead ends: 545 [2021-11-22 19:59:31,219 INFO L226 Difference]: Without dead ends: 276 [2021-11-22 19:59:31,220 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-22 19:59:31,220 INFO L933 BasicCegarLoop]: 283 mSDtfsCounter, 26 mSDsluCounter, 1098 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 1381 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 19:59:31,221 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 1381 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 19:59:31,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2021-11-22 19:59:31,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 276. [2021-11-22 19:59:31,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 262 states have (on average 1.2290076335877862) internal successors, (322), 275 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:59:31,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 322 transitions. [2021-11-22 19:59:31,228 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 322 transitions. Word has length 85 [2021-11-22 19:59:31,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:59:31,228 INFO L470 AbstractCegarLoop]: Abstraction has 276 states and 322 transitions. [2021-11-22 19:59:31,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 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 19:59:31,228 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 322 transitions. [2021-11-22 19:59:31,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-22 19:59:31,229 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:59:31,229 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:59:31,250 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-22 19:59:31,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-22 19:59:31,443 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-22 19:59:31,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:59:31,444 INFO L85 PathProgramCache]: Analyzing trace with hash 867807817, now seen corresponding path program 1 times [2021-11-22 19:59:31,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:59:31,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371694221] [2021-11-22 19:59:31,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:59:31,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:59:31,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:59:31,698 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-22 19:59:31,699 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:59:31,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371694221] [2021-11-22 19:59:31,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371694221] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 19:59:31,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1985212989] [2021-11-22 19:59:31,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:59:31,700 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 19:59:31,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 19:59:31,701 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 19:59:31,702 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 19:59:32,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:59:32,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 2974 conjuncts, 90 conjunts are in the unsatisfiable core [2021-11-22 19:59:32,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 19:59:32,397 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-22 19:59:32,398 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 17 treesize of output 23 [2021-11-22 19:59:32,404 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-22 19:59:32,443 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-22 19:59:32,443 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 27 [2021-11-22 19:59:32,479 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 6 treesize of output 5 [2021-11-22 19:59:32,497 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 6 treesize of output 5 [2021-11-22 19:59:32,538 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 19:59:32,793 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 19:59:32,793 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 25 [2021-11-22 19:59:32,818 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-22 19:59:32,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 19:59:32,981 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-22 19:59:32,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1985212989] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-22 19:59:32,982 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-22 19:59:32,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4, 17] total 23 [2021-11-22 19:59:32,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295852681] [2021-11-22 19:59:32,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:59:32,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 19:59:32,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:59:32,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 19:59:32,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2021-11-22 19:59:32,984 INFO L87 Difference]: Start difference. First operand 276 states and 322 transitions. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:59:33,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:59:33,592 INFO L93 Difference]: Finished difference Result 624 states and 736 transitions. [2021-11-22 19:59:33,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 19:59:33,593 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-11-22 19:59:33,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:59:33,594 INFO L225 Difference]: With dead ends: 624 [2021-11-22 19:59:33,594 INFO L226 Difference]: Without dead ends: 443 [2021-11-22 19:59:33,595 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=519, Unknown=0, NotChecked=0, Total=600 [2021-11-22 19:59:33,595 INFO L933 BasicCegarLoop]: 237 mSDtfsCounter, 285 mSDsluCounter, 744 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 981 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-22 19:59:33,595 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [285 Valid, 981 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-22 19:59:33,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2021-11-22 19:59:33,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 283. [2021-11-22 19:59:33,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 269 states have (on average 1.2267657992565055) internal successors, (330), 282 states have internal predecessors, (330), 0 states have call successors, (0), 0 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 19:59:33,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 330 transitions. [2021-11-22 19:59:33,602 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 330 transitions. Word has length 88 [2021-11-22 19:59:33,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:59:33,603 INFO L470 AbstractCegarLoop]: Abstraction has 283 states and 330 transitions. [2021-11-22 19:59:33,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:59:33,603 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 330 transitions. [2021-11-22 19:59:33,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-22 19:59:33,603 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:59:33,603 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:59:33,627 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-22 19:59:33,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-22 19:59:33,825 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-22 19:59:33,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:59:33,826 INFO L85 PathProgramCache]: Analyzing trace with hash -143309433, now seen corresponding path program 1 times [2021-11-22 19:59:33,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:59:33,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70181476] [2021-11-22 19:59:33,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:59:33,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:59:33,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:59:34,043 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-22 19:59:34,043 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:59:34,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70181476] [2021-11-22 19:59:34,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70181476] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 19:59:34,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396066882] [2021-11-22 19:59:34,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:59:34,044 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 19:59:34,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 19:59:34,045 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 19:59:34,049 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 19:59:34,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:59:34,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 2971 conjuncts, 112 conjunts are in the unsatisfiable core [2021-11-22 19:59:34,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 19:59:34,679 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-22 19:59:34,679 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-11-22 19:59:34,722 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-22 19:59:34,722 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 23 [2021-11-22 19:59:34,730 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-22 19:59:34,778 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-22 19:59:34,779 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 32 [2021-11-22 19:59:34,851 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-22 19:59:34,852 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2021-11-22 19:59:34,914 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-22 19:59:34,915 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 32 [2021-11-22 19:59:34,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-22 19:59:35,051 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-22 19:59:35,051 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 32 [2021-11-22 19:59:35,073 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-22 19:59:35,179 INFO L354 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2021-11-22 19:59:35,180 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 39 treesize of output 50 [2021-11-22 19:59:35,310 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-11-22 19:59:35,311 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 39 treesize of output 42 [2021-11-22 19:59:35,702 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-22 19:59:35,702 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-22 19:59:35,823 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-22 19:59:35,823 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-22 19:59:35,865 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-22 19:59:35,865 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 20 treesize of output 22 [2021-11-22 19:59:35,943 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-22 19:59:35,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 19:59:35,999 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2229 (Array Int Int))) (= (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7#1.base| v_ArrVal_2229) |c_ULTIMATE.start_aws_byte_cursor_advance_nospec_~cursor#1.base|) |c_ULTIMATE.start_aws_byte_cursor_advance_nospec_~cursor#1.offset|) 18446744073709551616) 0)) is different from false [2021-11-22 19:59:37,775 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 19:59:37,776 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 71 [2021-11-22 19:59:37,841 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2229 (Array Int Int)) (|v_ULTIMATE.start_aws_is_big_endian_~#z~0#1.base_33| Int) (v_arrayElimArr_1 (Array Int Int)) (v_ArrVal_2225 Int) (|v_ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7#1.base_12| Int) (v_ArrVal_2228 Int) (|v_ULTIMATE.start_aws_byte_cursor_read_~#slice~0#1.base_12| Int) (|v_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#dest_copy~0#1.base_8| Int)) (let ((.cse1 (store |c_#valid| |v_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#dest_copy~0#1.base_8| 1))) (let ((.cse0 (store |c_#memory_int| |v_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#dest_copy~0#1.base_8| v_arrayElimArr_1)) (.cse2 (store .cse1 |v_ULTIMATE.start_aws_is_big_endian_~#z~0#1.base_33| v_ArrVal_2225))) (or (= (mod (select (select (store .cse0 |v_ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7#1.base_12| v_ArrVal_2229) |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#cur~3#1.base|) |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#cur~3#1.offset|) 18446744073709551616) 0) (not (= (select .cse1 |v_ULTIMATE.start_aws_is_big_endian_~#z~0#1.base_33|) 0)) (not (= (select .cse2 |v_ULTIMATE.start_aws_byte_cursor_read_~#slice~0#1.base_12|) 0)) (not (= (mod (select (select .cse0 |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#cur~3#1.base|) |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#cur~3#1.offset|) 18446744073709551616) 0)) (not (= (select (store .cse2 |v_ULTIMATE.start_aws_byte_cursor_read_~#slice~0#1.base_12| v_ArrVal_2228) |v_ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7#1.base_12|) 0)))))) is different from false [2021-11-22 19:59:37,918 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2219 (Array Int Int)) (v_ArrVal_2229 (Array Int Int)) (|v_ULTIMATE.start_aws_is_big_endian_~#z~0#1.base_33| Int) (v_arrayElimArr_1 (Array Int Int)) (v_ArrVal_2225 Int) (|v_ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7#1.base_12| Int) (v_ArrVal_2228 Int) (|v_ULTIMATE.start_aws_byte_cursor_read_~#slice~0#1.base_12| Int) (|v_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#dest_copy~0#1.base_8| Int)) (let ((.cse1 (store |c_#valid| |v_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#dest_copy~0#1.base_8| 1))) (let ((.cse0 (store (store |c_#memory_int| |c_ULTIMATE.start_save_byte_from_array_~storage#1.base| v_ArrVal_2219) |v_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#dest_copy~0#1.base_8| v_arrayElimArr_1)) (.cse2 (store .cse1 |v_ULTIMATE.start_aws_is_big_endian_~#z~0#1.base_33| v_ArrVal_2225))) (or (not (= (mod (select (select .cse0 |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#cur~3#1.base|) |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#cur~3#1.offset|) 18446744073709551616) 0)) (not (= (select .cse1 |v_ULTIMATE.start_aws_is_big_endian_~#z~0#1.base_33|) 0)) (not (= (select .cse2 |v_ULTIMATE.start_aws_byte_cursor_read_~#slice~0#1.base_12|) 0)) (= (mod (select (select (store .cse0 |v_ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7#1.base_12| v_ArrVal_2229) |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#cur~3#1.base|) |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#cur~3#1.offset|) 18446744073709551616) 0) (not (= (select (store .cse2 |v_ULTIMATE.start_aws_byte_cursor_read_~#slice~0#1.base_12| v_ArrVal_2228) |v_ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7#1.base_12|) 0)))))) is different from false [2021-11-22 19:59:38,203 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 19:59:38,203 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 98699 treesize of output 98201 [2021-11-22 19:59:42,199 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2219 (Array Int Int)) (v_ArrVal_2229 (Array Int Int)) (v_arrayElimArr_1 (Array Int Int)) (|v_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#old_byte_from_cur~0#1.base_6| Int) (|v_ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7#1.base_12| Int) (|v_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#dest_copy~0#1.base_8| Int)) (let ((.cse0 (store (store |c_#memory_int| |v_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#old_byte_from_cur~0#1.base_6| v_ArrVal_2219) |v_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#dest_copy~0#1.base_8| v_arrayElimArr_1))) (or (= |v_ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7#1.base_12| |v_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#dest_copy~0#1.base_8|) (= |v_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#old_byte_from_cur~0#1.base_6| |v_ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7#1.base_12|) (not (= (mod (select (select .cse0 |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#cur~3#1.base|) |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#cur~3#1.offset|) 18446744073709551616) 0)) (= (mod (select (select (store .cse0 |v_ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7#1.base_12| v_ArrVal_2229) |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#cur~3#1.base|) |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#cur~3#1.offset|) 18446744073709551616) 0)))) is different from false [2021-11-22 19:59:43,562 WARN L838 $PredicateComparison]: unable to prove that (or |c_ULTIMATE.start_aws_byte_cursor_is_valid_#t~short694#1| (forall ((v_ArrVal_2219 (Array Int Int)) (v_ArrVal_2229 (Array Int Int)) (v_arrayElimArr_1 (Array Int Int)) (|v_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#old_byte_from_cur~0#1.base_6| Int) (|v_ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7#1.base_12| Int) (|v_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#dest_copy~0#1.base_8| Int)) (let ((.cse0 (store (store |c_#memory_int| |v_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#old_byte_from_cur~0#1.base_6| v_ArrVal_2219) |v_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#dest_copy~0#1.base_8| v_arrayElimArr_1))) (or (= |v_ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7#1.base_12| |v_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#dest_copy~0#1.base_8|) (= |v_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#old_byte_from_cur~0#1.base_6| |v_ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7#1.base_12|) (not (= (mod (select (select .cse0 |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#cur~3#1.base|) |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#cur~3#1.offset|) 18446744073709551616) 0)) (= (mod (select (select (store .cse0 |v_ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7#1.base_12| v_ArrVal_2229) |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#cur~3#1.base|) |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#cur~3#1.offset|) 18446744073709551616) 0))))) is different from false [2021-11-22 19:59:43,588 INFO L354 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2021-11-22 19:59:43,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 345 treesize of output 336 [2021-11-22 19:59:43,603 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 331 treesize of output 319 [2021-11-22 19:59:43,607 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 319 treesize of output 303 [2021-11-22 19:59:43,611 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 303 treesize of output 297 [2021-11-22 19:59:43,757 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-22 19:59:43,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396066882] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 19:59:43,757 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 19:59:43,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 22, 21] total 42 [2021-11-22 19:59:43,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307183200] [2021-11-22 19:59:43,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 19:59:43,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2021-11-22 19:59:43,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:59:43,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-11-22 19:59:43,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1201, Unknown=9, NotChecked=370, Total=1722 [2021-11-22 19:59:43,760 INFO L87 Difference]: Start difference. First operand 283 states and 330 transitions. Second operand has 42 states, 42 states have (on average 5.4523809523809526) internal successors, (229), 42 states have internal predecessors, (229), 0 states have call successors, (0), 0 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 19:59:43,918 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (= (mod (select (select |c_#memory_int| |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#cur~3#1.base|) |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#cur~3#1.offset|) 18446744073709551616) 0))) (let ((.cse1 (not .cse2))) (and (forall ((v_ArrVal_2219 (Array Int Int)) (v_ArrVal_2229 (Array Int Int)) (v_arrayElimArr_1 (Array Int Int)) (|v_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#old_byte_from_cur~0#1.base_6| Int) (|v_ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7#1.base_12| Int) (|v_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#dest_copy~0#1.base_8| Int)) (let ((.cse0 (store (store |c_#memory_int| |v_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#old_byte_from_cur~0#1.base_6| v_ArrVal_2219) |v_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#dest_copy~0#1.base_8| v_arrayElimArr_1))) (or (= |v_ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7#1.base_12| |v_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#dest_copy~0#1.base_8|) (= |v_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#old_byte_from_cur~0#1.base_6| |v_ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7#1.base_12|) (not (= (mod (select (select .cse0 |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#cur~3#1.base|) |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#cur~3#1.offset|) 18446744073709551616) 0)) (= (mod (select (select (store .cse0 |v_ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7#1.base_12| v_ArrVal_2229) |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#cur~3#1.base|) |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#cur~3#1.offset|) 18446744073709551616) 0)))) (= |c_ULTIMATE.start_aws_byte_cursor_is_valid_~cursor#1.offset| |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#cur~3#1.offset|) (= |c_ULTIMATE.start_aws_byte_cursor_is_valid_~cursor#1.base| |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#cur~3#1.base|) .cse1 (= |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#cur~3#1.offset| 0) (or (and |c_ULTIMATE.start_aws_byte_cursor_is_valid_#t~short694#1| .cse2) (and (not |c_ULTIMATE.start_aws_byte_cursor_is_valid_#t~short694#1|) .cse1))))) is different from false [2021-11-22 19:59:43,921 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_2219 (Array Int Int)) (v_ArrVal_2229 (Array Int Int)) (v_arrayElimArr_1 (Array Int Int)) (|v_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#old_byte_from_cur~0#1.base_6| Int) (|v_ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7#1.base_12| Int) (|v_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#dest_copy~0#1.base_8| Int)) (let ((.cse0 (store (store |c_#memory_int| |v_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#old_byte_from_cur~0#1.base_6| v_ArrVal_2219) |v_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#dest_copy~0#1.base_8| v_arrayElimArr_1))) (or (= |v_ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7#1.base_12| |v_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#dest_copy~0#1.base_8|) (= |v_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#old_byte_from_cur~0#1.base_6| |v_ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7#1.base_12|) (not (= (mod (select (select .cse0 |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#cur~3#1.base|) |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#cur~3#1.offset|) 18446744073709551616) 0)) (= (mod (select (select (store .cse0 |v_ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7#1.base_12| v_ArrVal_2229) |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#cur~3#1.base|) |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#cur~3#1.offset|) 18446744073709551616) 0)))) (not (= (mod (select (select |c_#memory_int| |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#cur~3#1.base|) |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#cur~3#1.offset|) 18446744073709551616) 0)) (= |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#cur~3#1.offset| 0)) is different from false [2021-11-22 19:59:45,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:59:45,910 INFO L93 Difference]: Finished difference Result 748 states and 880 transitions. [2021-11-22 19:59:45,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-22 19:59:45,911 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 5.4523809523809526) internal successors, (229), 42 states have internal predecessors, (229), 0 states have call successors, (0), 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 88 [2021-11-22 19:59:45,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:59:45,913 INFO L225 Difference]: With dead ends: 748 [2021-11-22 19:59:45,913 INFO L226 Difference]: Without dead ends: 507 [2021-11-22 19:59:45,914 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 139 SyntacticMatches, 7 SemanticMatches, 55 ConstructedPredicates, 7 IntricatePredicates, 1 DeprecatedPredicates, 614 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=277, Invalid=2182, Unknown=19, NotChecked=714, Total=3192 [2021-11-22 19:59:45,914 INFO L933 BasicCegarLoop]: 204 mSDtfsCounter, 331 mSDsluCounter, 4809 mSDsCounter, 0 mSdLazyCounter, 1020 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 5013 SdHoareTripleChecker+Invalid, 3690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1020 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2639 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-22 19:59:45,915 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [331 Valid, 5013 Invalid, 3690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1020 Invalid, 0 Unknown, 2639 Unchecked, 1.5s Time] [2021-11-22 19:59:45,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2021-11-22 19:59:45,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 342. [2021-11-22 19:59:45,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 328 states have (on average 1.204268292682927) internal successors, (395), 341 states have internal predecessors, (395), 0 states have call successors, (0), 0 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 19:59:45,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 395 transitions. [2021-11-22 19:59:45,951 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 395 transitions. Word has length 88 [2021-11-22 19:59:45,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:59:45,951 INFO L470 AbstractCegarLoop]: Abstraction has 342 states and 395 transitions. [2021-11-22 19:59:45,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 5.4523809523809526) internal successors, (229), 42 states have internal predecessors, (229), 0 states have call successors, (0), 0 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 19:59:45,952 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 395 transitions. [2021-11-22 19:59:45,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-22 19:59:45,953 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:59:45,959 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:59:45,980 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 19:59:46,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 19:59:46,172 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-22 19:59:46,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:59:46,172 INFO L85 PathProgramCache]: Analyzing trace with hash -482343026, now seen corresponding path program 1 times [2021-11-22 19:59:46,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:59:46,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434138393] [2021-11-22 19:59:46,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:59:46,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:59:46,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:59:46,459 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-22 19:59:46,460 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:59:46,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434138393] [2021-11-22 19:59:46,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434138393] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 19:59:46,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638144337] [2021-11-22 19:59:46,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:59:46,460 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 19:59:46,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 19:59:46,461 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 19:59:46,462 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 19:59:46,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:59:46,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 3097 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-22 19:59:47,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 19:59:47,126 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-22 19:59:47,126 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 19:59:47,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638144337] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:59:47,127 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-22 19:59:47,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2021-11-22 19:59:47,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960909359] [2021-11-22 19:59:47,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:59:47,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 19:59:47,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:59:47,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 19:59:47,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-22 19:59:47,128 INFO L87 Difference]: Start difference. First operand 342 states and 395 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:59:47,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:59:47,821 INFO L93 Difference]: Finished difference Result 665 states and 774 transitions. [2021-11-22 19:59:47,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 19:59:47,821 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2021-11-22 19:59:47,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:59:47,822 INFO L225 Difference]: With dead ends: 665 [2021-11-22 19:59:47,822 INFO L226 Difference]: Without dead ends: 403 [2021-11-22 19:59:47,823 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-22 19:59:47,823 INFO L933 BasicCegarLoop]: 317 mSDtfsCounter, 269 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 889 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-22 19:59:47,823 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [269 Valid, 889 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-22 19:59:47,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2021-11-22 19:59:47,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 320. [2021-11-22 19:59:47,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 306 states have (on average 1.1830065359477124) internal successors, (362), 319 states have internal predecessors, (362), 0 states have call successors, (0), 0 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 19:59:47,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 362 transitions. [2021-11-22 19:59:47,833 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 362 transitions. Word has length 89 [2021-11-22 19:59:47,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:59:47,833 INFO L470 AbstractCegarLoop]: Abstraction has 320 states and 362 transitions. [2021-11-22 19:59:47,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:59:47,833 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 362 transitions. [2021-11-22 19:59:47,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-22 19:59:47,834 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:59:47,834 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:59:47,858 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-22 19:59:48,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-22 19:59:48,056 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-22 19:59:48,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:59:48,056 INFO L85 PathProgramCache]: Analyzing trace with hash -708150551, now seen corresponding path program 2 times [2021-11-22 19:59:48,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:59:48,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559851527] [2021-11-22 19:59:48,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:59:48,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:59:48,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:59:48,344 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-22 19:59:48,344 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:59:48,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559851527] [2021-11-22 19:59:48,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559851527] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 19:59:48,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938153139] [2021-11-22 19:59:48,345 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-22 19:59:48,345 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 19:59:48,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 19:59:48,346 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 19:59:48,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-22 19:59:48,855 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-22 19:59:48,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 19:59:48,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 2817 conjuncts, 90 conjunts are in the unsatisfiable core [2021-11-22 19:59:48,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 19:59:48,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-22 19:59:48,894 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-22 19:59:48,895 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 14 [2021-11-22 19:59:48,923 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-22 19:59:48,924 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-22 19:59:48,989 INFO L354 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2021-11-22 19:59:48,990 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37 [2021-11-22 19:59:49,083 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-11-22 19:59:49,084 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 26 [2021-11-22 19:59:49,161 INFO L354 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2021-11-22 19:59:49,162 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 37 [2021-11-22 19:59:49,465 INFO L354 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2021-11-22 19:59:49,465 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 37 [2021-11-22 19:59:49,561 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-11-22 19:59:49,561 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2021-11-22 19:59:49,593 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-22 19:59:49,593 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 20 treesize of output 22 [2021-11-22 19:59:49,659 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-22 19:59:49,659 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 19:59:49,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [938153139] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:59:49,659 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-22 19:59:49,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [5] total 18 [2021-11-22 19:59:49,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11373910] [2021-11-22 19:59:49,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:59:49,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-22 19:59:49,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:59:49,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-22 19:59:49,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2021-11-22 19:59:49,661 INFO L87 Difference]: Start difference. First operand 320 states and 362 transitions. Second operand has 15 states, 15 states have (on average 5.866666666666666) internal successors, (88), 15 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:59:50,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:59:50,175 INFO L93 Difference]: Finished difference Result 686 states and 784 transitions. [2021-11-22 19:59:50,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-22 19:59:50,175 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.866666666666666) internal successors, (88), 15 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-11-22 19:59:50,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:59:50,176 INFO L225 Difference]: With dead ends: 686 [2021-11-22 19:59:50,176 INFO L226 Difference]: Without dead ends: 512 [2021-11-22 19:59:50,177 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 77 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=396, Unknown=0, NotChecked=0, Total=462 [2021-11-22 19:59:50,177 INFO L933 BasicCegarLoop]: 217 mSDtfsCounter, 212 mSDsluCounter, 2077 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 2294 SdHoareTripleChecker+Invalid, 903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 573 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-22 19:59:50,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [212 Valid, 2294 Invalid, 903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 317 Invalid, 0 Unknown, 573 Unchecked, 0.4s Time] [2021-11-22 19:59:50,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2021-11-22 19:59:50,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 338. [2021-11-22 19:59:50,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 324 states have (on average 1.1790123456790123) internal successors, (382), 337 states have internal predecessors, (382), 0 states have call successors, (0), 0 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 19:59:50,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 382 transitions. [2021-11-22 19:59:50,189 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 382 transitions. Word has length 90 [2021-11-22 19:59:50,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:59:50,189 INFO L470 AbstractCegarLoop]: Abstraction has 338 states and 382 transitions. [2021-11-22 19:59:50,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.866666666666666) internal successors, (88), 15 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:59:50,189 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 382 transitions. [2021-11-22 19:59:50,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-22 19:59:50,190 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:59:50,190 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:59:50,212 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-22 19:59:50,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-22 19:59:50,403 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-22 19:59:50,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:59:50,404 INFO L85 PathProgramCache]: Analyzing trace with hash -122559499, now seen corresponding path program 1 times [2021-11-22 19:59:50,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:59:50,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828266632] [2021-11-22 19:59:50,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:59:50,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:59:50,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:59:50,702 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-22 19:59:50,702 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:59:50,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828266632] [2021-11-22 19:59:50,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828266632] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 19:59:50,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67730445] [2021-11-22 19:59:50,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:59:50,703 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 19:59:50,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 19:59:50,704 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 19:59:50,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-22 19:59:51,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:59:51,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 3183 conjuncts, 104 conjunts are in the unsatisfiable core [2021-11-22 19:59:51,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 19:59:51,484 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-11-22 19:59:51,485 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 22 treesize of output 25 [2021-11-22 19:59:51,539 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 32 [2021-11-22 19:59:51,574 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 6 treesize of output 5 [2021-11-22 19:59:51,593 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 6 treesize of output 5 [2021-11-22 19:59:51,605 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 6 treesize of output 5 [2021-11-22 19:59:51,637 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 19:59:51,827 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 19:59:51,828 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 25 [2021-11-22 19:59:51,856 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-22 19:59:51,856 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 19:59:52,078 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-22 19:59:52,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [67730445] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-22 19:59:52,078 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-22 19:59:52,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5, 17] total 25 [2021-11-22 19:59:52,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339484335] [2021-11-22 19:59:52,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:59:52,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 19:59:52,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:59:52,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 19:59:52,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=529, Unknown=0, NotChecked=0, Total=600 [2021-11-22 19:59:52,079 INFO L87 Difference]: Start difference. First operand 338 states and 382 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:59:52,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:59:52,669 INFO L93 Difference]: Finished difference Result 551 states and 629 transitions. [2021-11-22 19:59:52,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 19:59:52,670 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-11-22 19:59:52,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:59:52,671 INFO L225 Difference]: With dead ends: 551 [2021-11-22 19:59:52,671 INFO L226 Difference]: Without dead ends: 367 [2021-11-22 19:59:52,671 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=663, Unknown=0, NotChecked=0, Total=756 [2021-11-22 19:59:52,672 INFO L933 BasicCegarLoop]: 253 mSDtfsCounter, 149 mSDsluCounter, 752 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 1005 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-22 19:59:52,672 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 1005 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-22 19:59:52,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2021-11-22 19:59:52,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 360. [2021-11-22 19:59:52,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 346 states have (on average 1.1647398843930636) internal successors, (403), 359 states have internal predecessors, (403), 0 states have call successors, (0), 0 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 19:59:52,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 403 transitions. [2021-11-22 19:59:52,683 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 403 transitions. Word has length 90 [2021-11-22 19:59:52,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:59:52,683 INFO L470 AbstractCegarLoop]: Abstraction has 360 states and 403 transitions. [2021-11-22 19:59:52,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:59:52,683 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 403 transitions. [2021-11-22 19:59:52,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-22 19:59:52,684 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:59:52,684 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:59:52,706 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-22 19:59:52,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 19:59:52,899 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-22 19:59:52,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:59:52,900 INFO L85 PathProgramCache]: Analyzing trace with hash 756204530, now seen corresponding path program 1 times [2021-11-22 19:59:52,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:59:52,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438847157] [2021-11-22 19:59:52,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:59:52,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:59:52,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:59:53,021 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-22 19:59:53,021 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:59:53,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438847157] [2021-11-22 19:59:53,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438847157] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:59:53,021 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:59:53,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 19:59:53,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884690378] [2021-11-22 19:59:53,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:59:53,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 19:59:53,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:59:53,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 19:59:53,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 19:59:53,023 INFO L87 Difference]: Start difference. First operand 360 states and 403 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:59:53,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:59:53,097 INFO L93 Difference]: Finished difference Result 504 states and 568 transitions. [2021-11-22 19:59:53,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 19:59:53,098 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-11-22 19:59:53,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:59:53,099 INFO L225 Difference]: With dead ends: 504 [2021-11-22 19:59:53,099 INFO L226 Difference]: Without dead ends: 360 [2021-11-22 19:59:53,099 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 19:59:53,100 INFO L933 BasicCegarLoop]: 269 mSDtfsCounter, 123 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 19:59:53,100 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 640 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 19:59:53,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2021-11-22 19:59:53,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 360. [2021-11-22 19:59:53,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 346 states have (on average 1.1618497109826589) internal successors, (402), 359 states have internal predecessors, (402), 0 states have call successors, (0), 0 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 19:59:53,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 402 transitions. [2021-11-22 19:59:53,111 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 402 transitions. Word has length 90 [2021-11-22 19:59:53,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:59:53,112 INFO L470 AbstractCegarLoop]: Abstraction has 360 states and 402 transitions. [2021-11-22 19:59:53,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:59:53,112 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 402 transitions. [2021-11-22 19:59:53,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-22 19:59:53,113 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:59:53,113 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:59:53,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-22 19:59:53,113 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-22 19:59:53,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:59:53,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1447147043, now seen corresponding path program 1 times [2021-11-22 19:59:53,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:59:53,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582847302] [2021-11-22 19:59:53,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:59:53,114 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:59:53,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:59:53,354 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-22 19:59:53,354 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:59:53,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582847302] [2021-11-22 19:59:53,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582847302] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 19:59:53,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739149126] [2021-11-22 19:59:53,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:59:53,355 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 19:59:53,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 19:59:53,356 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 19:59:53,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-22 19:59:53,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:59:53,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 3124 conjuncts, 87 conjunts are in the unsatisfiable core [2021-11-22 19:59:53,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 19:59:54,147 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-22 19:59:54,148 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 17 treesize of output 23 [2021-11-22 19:59:54,152 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-22 19:59:54,187 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-22 19:59:54,188 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 27 [2021-11-22 19:59:54,194 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-22 19:59:54,233 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 6 treesize of output 5 [2021-11-22 19:59:54,245 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 6 treesize of output 5 [2021-11-22 19:59:54,257 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 6 treesize of output 5 [2021-11-22 19:59:54,292 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 19:59:54,466 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 19:59:54,467 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 27 [2021-11-22 19:59:54,505 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-22 19:59:54,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 19:59:54,743 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-22 19:59:54,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1739149126] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-22 19:59:54,744 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-22 19:59:54,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [5, 15] total 24 [2021-11-22 19:59:54,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618356873] [2021-11-22 19:59:54,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:59:54,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-22 19:59:54,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:59:54,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-22 19:59:54,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=487, Unknown=0, NotChecked=0, Total=552 [2021-11-22 19:59:54,745 INFO L87 Difference]: Start difference. First operand 360 states and 402 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:59:55,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:59:55,619 INFO L93 Difference]: Finished difference Result 651 states and 730 transitions. [2021-11-22 19:59:55,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-22 19:59:55,620 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-22 19:59:55,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:59:55,621 INFO L225 Difference]: With dead ends: 651 [2021-11-22 19:59:55,621 INFO L226 Difference]: Without dead ends: 440 [2021-11-22 19:59:55,622 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=97, Invalid=659, Unknown=0, NotChecked=0, Total=756 [2021-11-22 19:59:55,622 INFO L933 BasicCegarLoop]: 340 mSDtfsCounter, 473 mSDsluCounter, 986 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 473 SdHoareTripleChecker+Valid, 1326 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-22 19:59:55,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [473 Valid, 1326 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-22 19:59:55,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2021-11-22 19:59:55,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 366. [2021-11-22 19:59:55,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 352 states have (on average 1.1534090909090908) internal successors, (406), 365 states have internal predecessors, (406), 0 states have call successors, (0), 0 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 19:59:55,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 406 transitions. [2021-11-22 19:59:55,635 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 406 transitions. Word has length 95 [2021-11-22 19:59:55,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:59:55,635 INFO L470 AbstractCegarLoop]: Abstraction has 366 states and 406 transitions. [2021-11-22 19:59:55,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:59:55,635 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 406 transitions. [2021-11-22 19:59:55,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-22 19:59:55,636 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:59:55,636 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:59:55,659 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-22 19:59:55,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-11-22 19:59:55,851 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-22 19:59:55,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:59:55,851 INFO L85 PathProgramCache]: Analyzing trace with hash 291584250, now seen corresponding path program 1 times [2021-11-22 19:59:55,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:59:55,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15277845] [2021-11-22 19:59:55,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:59:55,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:59:56,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:59:56,097 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-22 19:59:56,097 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:59:56,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15277845] [2021-11-22 19:59:56,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15277845] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 19:59:56,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569758168] [2021-11-22 19:59:56,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:59:56,098 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 19:59:56,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 19:59:56,099 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 19:59:56,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-22 19:59:56,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:59:56,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 3147 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-22 19:59:56,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 19:59:56,806 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-22 19:59:56,806 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 19:59:56,920 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-22 19:59:56,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [569758168] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 19:59:56,920 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 19:59:56,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2021-11-22 19:59:56,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706989370] [2021-11-22 19:59:56,920 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 19:59:56,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-22 19:59:56,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:59:56,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-22 19:59:56,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-11-22 19:59:56,921 INFO L87 Difference]: Start difference. First operand 366 states and 406 transitions. Second operand has 11 states, 11 states have (on average 9.545454545454545) internal successors, (105), 11 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:59:57,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:59:57,467 INFO L93 Difference]: Finished difference Result 715 states and 799 transitions. [2021-11-22 19:59:57,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 19:59:57,468 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.545454545454545) internal successors, (105), 11 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-22 19:59:57,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:59:57,469 INFO L225 Difference]: With dead ends: 715 [2021-11-22 19:59:57,469 INFO L226 Difference]: Without dead ends: 392 [2021-11-22 19:59:57,469 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-11-22 19:59:57,470 INFO L933 BasicCegarLoop]: 270 mSDtfsCounter, 722 mSDsluCounter, 1209 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 722 SdHoareTripleChecker+Valid, 1479 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-22 19:59:57,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [722 Valid, 1479 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-22 19:59:57,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2021-11-22 19:59:57,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 307. [2021-11-22 19:59:57,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 293 states have (on average 1.1569965870307166) internal successors, (339), 306 states have internal predecessors, (339), 0 states have call successors, (0), 0 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 19:59:57,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 339 transitions. [2021-11-22 19:59:57,480 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 339 transitions. Word has length 96 [2021-11-22 19:59:57,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:59:57,480 INFO L470 AbstractCegarLoop]: Abstraction has 307 states and 339 transitions. [2021-11-22 19:59:57,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.545454545454545) internal successors, (105), 11 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:59:57,480 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 339 transitions. [2021-11-22 19:59:57,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-22 19:59:57,481 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:59:57,481 INFO L514 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:59:57,502 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-22 19:59:57,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-11-22 19:59:57,703 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-22 19:59:57,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:59:57,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1728011404, now seen corresponding path program 1 times [2021-11-22 19:59:57,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:59:57,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842685986] [2021-11-22 19:59:57,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:59:57,703 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:59:57,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:59:57,838 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-22 19:59:57,838 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:59:57,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842685986] [2021-11-22 19:59:57,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842685986] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:59:57,838 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:59:57,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 19:59:57,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925265770] [2021-11-22 19:59:57,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:59:57,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 19:59:57,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:59:57,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 19:59:57,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 19:59:57,843 INFO L87 Difference]: Start difference. First operand 307 states and 339 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:59:58,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:59:58,217 INFO L93 Difference]: Finished difference Result 494 states and 556 transitions. [2021-11-22 19:59:58,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-22 19:59:58,219 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-22 19:59:58,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:59:58,220 INFO L225 Difference]: With dead ends: 494 [2021-11-22 19:59:58,220 INFO L226 Difference]: Without dead ends: 341 [2021-11-22 19:59:58,221 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-22 19:59:58,222 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 39 mSDsluCounter, 584 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 840 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 19:59:58,222 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 840 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-22 19:59:58,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2021-11-22 19:59:58,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 329. [2021-11-22 19:59:58,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 315 states have (on average 1.1587301587301588) internal successors, (365), 328 states have internal predecessors, (365), 0 states have call successors, (0), 0 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 19:59:58,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 365 transitions. [2021-11-22 19:59:58,234 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 365 transitions. Word has length 97 [2021-11-22 19:59:58,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:59:58,234 INFO L470 AbstractCegarLoop]: Abstraction has 329 states and 365 transitions. [2021-11-22 19:59:58,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:59:58,234 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 365 transitions. [2021-11-22 19:59:58,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-22 19:59:58,235 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:59:58,235 INFO L514 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:59:58,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-22 19:59:58,235 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-22 19:59:58,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:59:58,236 INFO L85 PathProgramCache]: Analyzing trace with hash -916328361, now seen corresponding path program 1 times [2021-11-22 19:59:58,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:59:58,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785086991] [2021-11-22 19:59:58,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:59:58,237 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:59:58,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:59:58,526 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-22 19:59:58,526 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:59:58,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785086991] [2021-11-22 19:59:58,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785086991] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 19:59:58,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793352112] [2021-11-22 19:59:58,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:59:58,528 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 19:59:58,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 19:59:58,528 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 19:59:58,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-22 19:59:59,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:59:59,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 3304 conjuncts, 121 conjunts are in the unsatisfiable core [2021-11-22 19:59:59,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 19:59:59,387 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-22 19:59:59,387 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 17 treesize of output 23 [2021-11-22 19:59:59,394 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-22 19:59:59,429 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-22 19:59:59,432 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 27 [2021-11-22 19:59:59,465 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 6 treesize of output 5 [2021-11-22 19:59:59,475 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 6 treesize of output 5 [2021-11-22 19:59:59,489 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 6 treesize of output 5 [2021-11-22 19:59:59,504 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 6 treesize of output 5 [2021-11-22 19:59:59,542 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 19:59:59,798 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2021-11-22 19:59:59,806 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-22 19:59:59,808 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 27 [2021-11-22 19:59:59,814 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-11-22 20:00:00,142 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-22 20:00:00,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 20:00:00,322 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 20:00:00,322 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 19 [2021-11-22 20:00:00,328 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7#1.base| Int) (v_arrayElimArr_3 (Array Int Int))) (or (not (= (select v_arrayElimArr_3 |c_ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7#1.offset|) 0)) (= (mod (select (select (store |c_#memory_int| |ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7#1.base| v_arrayElimArr_3) |c_ULTIMATE.start_aws_byte_cursor_read_~cur#1.base|) |c_ULTIMATE.start_aws_byte_cursor_read_~cur#1.offset|) 18446744073709551616) 0))) is different from false [2021-11-22 20:00:00,343 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7#1.base| Int) (v_arrayElimArr_3 (Array Int Int))) (or (not (= (select v_arrayElimArr_3 0) 0)) (= (mod (select (select (store |c_#memory_int| |ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7#1.base| v_arrayElimArr_3) |c_ULTIMATE.start_aws_byte_cursor_read_~cur#1.base|) |c_ULTIMATE.start_aws_byte_cursor_read_~cur#1.offset|) 18446744073709551616) 0))) is different from false [2021-11-22 20:00:00,766 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5196 Int) (|ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7#1.base| Int) (v_arrayElimArr_3 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#dest_copy~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#dest_copy~0#1.base|) |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#dest_copy~0#1.offset| v_ArrVal_5196)))) (or (not (= (mod (select (select .cse0 |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#cur~3#1.base|) |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#cur~3#1.offset|) 18446744073709551616) 0)) (not (= (select v_arrayElimArr_3 0) 0)) (= (mod (select (select (store .cse0 |ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7#1.base| v_arrayElimArr_3) |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#cur~3#1.base|) |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#cur~3#1.offset|) 18446744073709551616) 0)))) is different from false [2021-11-22 20:00:00,928 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5196 Int) (|ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7#1.base| Int) (v_arrayElimArr_3 (Array Int Int)) (v_ArrVal_5195 (Array Int Int))) (let ((.cse0 (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_#Ultimate.C_memcpy_dest#1.base| v_ArrVal_5195))) (store .cse1 |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#dest_copy~0#1.base| (store (select .cse1 |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#dest_copy~0#1.base|) |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#dest_copy~0#1.offset| v_ArrVal_5196))))) (or (= (mod (select (select (store .cse0 |ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7#1.base| v_arrayElimArr_3) |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#cur~3#1.base|) |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#cur~3#1.offset|) 18446744073709551616) 0) (not (= (mod (select (select .cse0 |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#cur~3#1.base|) |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#cur~3#1.offset|) 18446744073709551616) 0)) (not (= (select v_arrayElimArr_3 0) 0))))) is different from false [2021-11-22 20:00:01,057 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 20:00:01,058 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 41 [2021-11-22 20:00:01,081 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7#1.base| Int) (v_arrayElimArr_4 (Array Int Int)) (v_arrayElimArr_3 (Array Int Int)) (|v_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#dest_copy~0#1.base_10| Int)) (let ((.cse0 (store |c_#memory_int| |v_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#dest_copy~0#1.base_10| v_arrayElimArr_4))) (or (= (mod (select (select (store .cse0 |ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7#1.base| v_arrayElimArr_3) |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#cur~3#1.base|) |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#cur~3#1.offset|) 18446744073709551616) 0) (not (= (mod (select (select .cse0 |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#cur~3#1.base|) |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#cur~3#1.offset|) 18446744073709551616) 0)) (not (= (select v_arrayElimArr_3 0) 0))))) is different from false [2021-11-22 20:00:01,111 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7#1.base| Int) (v_arrayElimArr_4 (Array Int Int)) (v_arrayElimArr_3 (Array Int Int)) (|v_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#dest_copy~0#1.base_10| Int) (v_ArrVal_5185 (Array Int Int))) (let ((.cse0 (store (store |c_#memory_int| |c_ULTIMATE.start_save_byte_from_array_~storage#1.base| v_ArrVal_5185) |v_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#dest_copy~0#1.base_10| v_arrayElimArr_4))) (or (not (= (mod (select (select .cse0 |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#cur~3#1.base|) |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#cur~3#1.offset|) 18446744073709551616) 0)) (not (= (select v_arrayElimArr_3 0) 0)) (= 0 (mod (select (select (store .cse0 |ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7#1.base| v_arrayElimArr_3) |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#cur~3#1.base|) |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#cur~3#1.offset|) 18446744073709551616))))) is different from false [2021-11-22 20:00:01,167 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7#1.base| Int) (v_arrayElimArr_4 (Array Int Int)) (v_arrayElimArr_3 (Array Int Int)) (|ULTIMATE.start_save_byte_from_array_~storage#1.base| Int) (|v_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#dest_copy~0#1.base_10| Int) (v_ArrVal_5185 (Array Int Int))) (let ((.cse0 (store (store |c_#memory_int| |ULTIMATE.start_save_byte_from_array_~storage#1.base| v_ArrVal_5185) |v_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#dest_copy~0#1.base_10| v_arrayElimArr_4))) (or (not (= (mod (select (select .cse0 |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#cur~3#1.base|) |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#cur~3#1.offset|) 18446744073709551616) 0)) (not (= (select v_arrayElimArr_3 0) 0)) (= 0 (mod (select (select (store .cse0 |ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7#1.base| v_arrayElimArr_3) |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#cur~3#1.base|) |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#cur~3#1.offset|) 18446744073709551616))))) is different from false [2021-11-22 20:00:01,737 WARN L838 $PredicateComparison]: unable to prove that (or |c_ULTIMATE.start_aws_byte_cursor_is_valid_#t~short694#1| (forall ((|ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7#1.base| Int) (v_arrayElimArr_4 (Array Int Int)) (v_arrayElimArr_3 (Array Int Int)) (|ULTIMATE.start_save_byte_from_array_~storage#1.base| Int) (|v_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#dest_copy~0#1.base_10| Int) (v_ArrVal_5185 (Array Int Int))) (let ((.cse0 (store (store |c_#memory_int| |ULTIMATE.start_save_byte_from_array_~storage#1.base| v_ArrVal_5185) |v_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#dest_copy~0#1.base_10| v_arrayElimArr_4))) (or (not (= (mod (select (select .cse0 |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#cur~3#1.base|) |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#cur~3#1.offset|) 18446744073709551616) 0)) (not (= (select v_arrayElimArr_3 0) 0)) (= 0 (mod (select (select (store .cse0 |ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7#1.base| v_arrayElimArr_3) |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#cur~3#1.base|) |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#cur~3#1.offset|) 18446744073709551616)))))) is different from false [2021-11-22 20:00:01,756 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 20:00:01,757 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1247 treesize of output 1214 [2021-11-22 20:00:01,772 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1222 treesize of output 1202 [2021-11-22 20:00:01,780 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1202 treesize of output 1162 [2021-11-22 20:00:01,794 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-22 20:00:01,794 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1162 treesize of output 1099 [2021-11-22 20:00:02,018 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 1 not checked. [2021-11-22 20:00:02,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793352112] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 20:00:02,018 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 20:00:02,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 24, 22] total 47 [2021-11-22 20:00:02,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284279208] [2021-11-22 20:00:02,019 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 20:00:02,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2021-11-22 20:00:02,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:00:02,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-11-22 20:00:02,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=1301, Unknown=10, NotChecked=648, Total=2162 [2021-11-22 20:00:02,020 INFO L87 Difference]: Start difference. First operand 329 states and 365 transitions. Second operand has 47 states, 47 states have (on average 5.957446808510638) internal successors, (280), 47 states have internal predecessors, (280), 0 states have call successors, (0), 0 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 20:00:04,900 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (not |c_ULTIMATE.start_aws_byte_cursor_is_valid_#t~short694#1|)) (.cse0 (= (mod (select (select |c_#memory_int| |c_ULTIMATE.start_aws_byte_cursor_read_be64_~cur#1.base|) |c_ULTIMATE.start_aws_byte_cursor_read_be64_~cur#1.offset|) 18446744073709551616) 0))) (and (= |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#dest_copy~0#1.offset| 0) (= 0 |c_ULTIMATE.start_aws_byte_cursor_read_~cur#1.offset|) (= |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#dest_copy~0#1.base| |c_ULTIMATE.start_#Ultimate.C_memcpy_dest#1.base|) (= (mod (select (select |c_#memory_int| |c_ULTIMATE.start_aws_byte_cursor_read_~cur#1.base|) |c_ULTIMATE.start_aws_byte_cursor_read_~cur#1.offset|) 18446744073709551616) 0) (= |c_ULTIMATE.start_aws_byte_cursor_is_valid_~cursor#1.offset| |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#cur~3#1.offset|) (= |c_ULTIMATE.start_aws_byte_cursor_is_valid_~cursor#1.base| |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#cur~3#1.base|) (= |c_ULTIMATE.start_aws_byte_cursor_is_valid_~cursor#1.base| |c_ULTIMATE.start_aws_byte_cursor_read_~cur#1.base|) (= |c_ULTIMATE.start_aws_byte_cursor_is_valid_~cursor#1.offset| |c_ULTIMATE.start_aws_byte_cursor_read_~cur#1.offset|) (= |c_ULTIMATE.start_aws_byte_cursor_is_valid_~cursor#1.base| |c_ULTIMATE.start_aws_byte_cursor_read_be64_~cur#1.base|) .cse0 (= |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#cur~3#1.offset| 0) (let ((.cse1 (= (mod (select (select |c_#memory_int| |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#cur~3#1.base|) |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#cur~3#1.offset|) 18446744073709551616) 0))) (or (and |c_ULTIMATE.start_aws_byte_cursor_is_valid_#t~short694#1| .cse1) (and .cse2 (not .cse1)))) (forall ((|ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7#1.base| Int) (v_arrayElimArr_3 (Array Int Int))) (or (not (= (select v_arrayElimArr_3 0) 0)) (= (mod (select (select (store |c_#memory_int| |ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7#1.base| v_arrayElimArr_3) |c_ULTIMATE.start_aws_byte_cursor_read_~cur#1.base|) |c_ULTIMATE.start_aws_byte_cursor_read_~cur#1.offset|) 18446744073709551616) 0))) (= |c_ULTIMATE.start_aws_byte_cursor_is_valid_~cursor#1.offset| |c_ULTIMATE.start_aws_byte_cursor_read_be64_~cur#1.offset|) (or (and |c_ULTIMATE.start_aws_byte_cursor_is_valid_#t~short694#1| .cse0) (and .cse2 (not .cse0))) (= |c_ULTIMATE.start_aws_byte_cursor_read_be64_~cur#1.offset| 0))) is different from false [2021-11-22 20:00:04,902 WARN L838 $PredicateComparison]: unable to prove that (and (= 0 |c_ULTIMATE.start_aws_byte_cursor_read_~cur#1.offset|) (= (mod (select (select |c_#memory_int| |c_ULTIMATE.start_aws_byte_cursor_read_~cur#1.base|) |c_ULTIMATE.start_aws_byte_cursor_read_~cur#1.offset|) 18446744073709551616) 0) (forall ((|ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7#1.base| Int) (v_arrayElimArr_3 (Array Int Int))) (or (not (= (select v_arrayElimArr_3 0) 0)) (= (mod (select (select (store |c_#memory_int| |ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7#1.base| v_arrayElimArr_3) |c_ULTIMATE.start_aws_byte_cursor_read_~cur#1.base|) |c_ULTIMATE.start_aws_byte_cursor_read_~cur#1.offset|) 18446744073709551616) 0)))) is different from false [2021-11-22 20:00:04,922 WARN L838 $PredicateComparison]: unable to prove that (and (= 0 |c_ULTIMATE.start_aws_byte_cursor_read_~cur#1.offset|) (= |c_ULTIMATE.start_aws_byte_cursor_read_~cur#1.offset| |c_ULTIMATE.start_aws_byte_cursor_advance_nospec_~cursor#1.offset|) (= (mod (select (select |c_#memory_int| |c_ULTIMATE.start_aws_byte_cursor_read_~cur#1.base|) |c_ULTIMATE.start_aws_byte_cursor_read_~cur#1.offset|) 18446744073709551616) 0) (forall ((|ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7#1.base| Int) (v_arrayElimArr_3 (Array Int Int))) (or (not (= (select v_arrayElimArr_3 0) 0)) (= (mod (select (select (store |c_#memory_int| |ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7#1.base| v_arrayElimArr_3) |c_ULTIMATE.start_aws_byte_cursor_read_~cur#1.base|) |c_ULTIMATE.start_aws_byte_cursor_read_~cur#1.offset|) 18446744073709551616) 0)))) is different from false [2021-11-22 20:00:04,943 WARN L838 $PredicateComparison]: unable to prove that (and (= 0 |c_ULTIMATE.start_aws_byte_cursor_read_~cur#1.offset|) (= |c_ULTIMATE.start_aws_byte_cursor_read_~cur#1.offset| |c_ULTIMATE.start_aws_byte_cursor_advance_nospec_~cursor#1.offset|) (= (mod (select (select |c_#memory_int| |c_ULTIMATE.start_aws_byte_cursor_read_~cur#1.base|) |c_ULTIMATE.start_aws_byte_cursor_read_~cur#1.offset|) 18446744073709551616) 0) (= |c_ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7#1.offset| 0) (forall ((|ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7#1.base| Int) (v_arrayElimArr_3 (Array Int Int))) (or (not (= (select v_arrayElimArr_3 |c_ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7#1.offset|) 0)) (= (mod (select (select (store |c_#memory_int| |ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7#1.base| v_arrayElimArr_3) |c_ULTIMATE.start_aws_byte_cursor_read_~cur#1.base|) |c_ULTIMATE.start_aws_byte_cursor_read_~cur#1.offset|) 18446744073709551616) 0)))) is different from false [2021-11-22 20:00:05,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:00:05,434 INFO L93 Difference]: Finished difference Result 634 states and 710 transitions. [2021-11-22 20:00:05,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-22 20:00:05,434 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 5.957446808510638) internal successors, (280), 47 states have internal predecessors, (280), 0 states have call successors, (0), 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 106 [2021-11-22 20:00:05,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:00:05,435 INFO L225 Difference]: With dead ends: 634 [2021-11-22 20:00:05,435 INFO L226 Difference]: Without dead ends: 349 [2021-11-22 20:00:05,437 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 173 SyntacticMatches, 4 SemanticMatches, 69 ConstructedPredicates, 12 IntricatePredicates, 0 DeprecatedPredicates, 807 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=503, Invalid=2911, Unknown=56, NotChecked=1500, Total=4970 [2021-11-22 20:00:05,437 INFO L933 BasicCegarLoop]: 220 mSDtfsCounter, 530 mSDsluCounter, 4329 mSDsCounter, 0 mSdLazyCounter, 1090 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 530 SdHoareTripleChecker+Valid, 4549 SdHoareTripleChecker+Invalid, 3005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1857 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-22 20:00:05,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [530 Valid, 4549 Invalid, 3005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 1090 Invalid, 0 Unknown, 1857 Unchecked, 2.1s Time] [2021-11-22 20:00:05,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2021-11-22 20:00:05,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 346. [2021-11-22 20:00:05,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 332 states have (on average 1.1536144578313252) internal successors, (383), 345 states have internal predecessors, (383), 0 states have call successors, (0), 0 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 20:00:05,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 383 transitions. [2021-11-22 20:00:05,448 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 383 transitions. Word has length 106 [2021-11-22 20:00:05,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:00:05,448 INFO L470 AbstractCegarLoop]: Abstraction has 346 states and 383 transitions. [2021-11-22 20:00:05,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 5.957446808510638) internal successors, (280), 47 states have internal predecessors, (280), 0 states have call successors, (0), 0 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 20:00:05,449 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 383 transitions. [2021-11-22 20:00:05,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-22 20:00:05,449 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:00:05,449 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:00:05,473 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-22 20:00:05,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-11-22 20:00:05,663 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-22 20:00:05,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:00:05,664 INFO L85 PathProgramCache]: Analyzing trace with hash 818532856, now seen corresponding path program 1 times [2021-11-22 20:00:05,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:00:05,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617020372] [2021-11-22 20:00:05,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:00:05,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:00:05,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:00:05,814 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-22 20:00:05,814 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:00:05,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617020372] [2021-11-22 20:00:05,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617020372] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:00:05,815 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:00:05,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 20:00:05,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961252863] [2021-11-22 20:00:05,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:00:05,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 20:00:05,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:00:05,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 20:00:05,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 20:00:05,816 INFO L87 Difference]: Start difference. First operand 346 states and 383 transitions. Second operand has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:00:05,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:00:05,993 INFO L93 Difference]: Finished difference Result 576 states and 644 transitions. [2021-11-22 20:00:05,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 20:00:05,993 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-11-22 20:00:05,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:00:05,994 INFO L225 Difference]: With dead ends: 576 [2021-11-22 20:00:05,995 INFO L226 Difference]: Without dead ends: 461 [2021-11-22 20:00:05,995 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-22 20:00:05,995 INFO L933 BasicCegarLoop]: 268 mSDtfsCounter, 118 mSDsluCounter, 764 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 1032 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 20:00:05,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 1032 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 20:00:05,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2021-11-22 20:00:06,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 353. [2021-11-22 20:00:06,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 339 states have (on average 1.1474926253687316) internal successors, (389), 352 states have internal predecessors, (389), 0 states have call successors, (0), 0 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 20:00:06,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 389 transitions. [2021-11-22 20:00:06,008 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 389 transitions. Word has length 108 [2021-11-22 20:00:06,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:00:06,008 INFO L470 AbstractCegarLoop]: Abstraction has 353 states and 389 transitions. [2021-11-22 20:00:06,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:00:06,008 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 389 transitions. [2021-11-22 20:00:06,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-22 20:00:06,009 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:00:06,009 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:00:06,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-22 20:00:06,009 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-22 20:00:06,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:00:06,010 INFO L85 PathProgramCache]: Analyzing trace with hash -878536193, now seen corresponding path program 1 times [2021-11-22 20:00:06,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:00:06,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278208378] [2021-11-22 20:00:06,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:00:06,010 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:00:06,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:00:06,356 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-22 20:00:06,356 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:00:06,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278208378] [2021-11-22 20:00:06,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278208378] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 20:00:06,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940800127] [2021-11-22 20:00:06,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:00:06,357 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:00:06,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:00:06,358 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 20:00:06,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-22 20:00:07,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:00:07,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 3433 conjuncts, 218 conjunts are in the unsatisfiable core [2021-11-22 20:00:07,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:00:07,272 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-22 20:00:07,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:00:07,277 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 23 treesize of output 22 [2021-11-22 20:00:07,493 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-22 20:00:07,493 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 16 treesize of output 22 [2021-11-22 20:00:07,502 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-22 20:00:07,518 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-11-22 20:00:07,518 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 60 treesize of output 55 [2021-11-22 20:00:07,881 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-22 20:00:07,881 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 105 treesize of output 91 [2021-11-22 20:00:07,903 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-22 20:00:07,904 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 94 treesize of output 100 [2021-11-22 20:00:08,059 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-22 20:00:08,147 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-22 20:00:08,147 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 100 treesize of output 106 [2021-11-22 20:00:08,184 INFO L354 Elim1Store]: treesize reduction 20, result has 57.4 percent of original size [2021-11-22 20:00:08,184 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 101 treesize of output 114 [2021-11-22 20:00:08,219 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 34 [2021-11-22 20:00:08,345 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-22 20:00:08,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 28 [2021-11-22 20:00:08,664 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-22 20:00:08,664 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 180 treesize of output 186 [2021-11-22 20:00:08,695 INFO L354 Elim1Store]: treesize reduction 20, result has 57.4 percent of original size [2021-11-22 20:00:08,695 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 186 treesize of output 189 [2021-11-22 20:00:08,700 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Should have been eliminated by DER [2021-11-22 20:00:08,700 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-22 20:00:08,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-11-22 20:00:08,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621249148] [2021-11-22 20:00:08,700 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-22 20:00:08,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 20:00:08,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:00:08,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 20:00:08,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2021-11-22 20:00:08,701 INFO L87 Difference]: Start difference. First operand 353 states and 389 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:00:08,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 20:00:08,703 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2021-11-22 20:00:08,703 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 0 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 1 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 20:00:08,703 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 79 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 20:00:08,727 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-22 20:00:08,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:00:08,916 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@311fc303 at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.assertCodeBlock(IncrementalHoareTripleChecker.java:360) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.prepareAssertionStackAndAddTransition(IncrementalHoareTripleChecker.java:206) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkInternal(IncrementalHoareTripleChecker.java:131) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.checkInternal(ChainingHoareTripleChecker.java:455) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.checkInternal(ChainingHoareTripleChecker.java:103) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkInternal(CachingHoareTripleChecker.java:95) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$InternalSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:357) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.addOtherSuccessors(DeterministicInterpolantAutomaton.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:78) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1058) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:960) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:868) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:784) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-22 20:00:08,920 INFO L158 Benchmark]: Toolchain (without parser) took 53762.85ms. Allocated memory was 98.6MB in the beginning and 1.2GB in the end (delta: 1.1GB). Free memory was 60.3MB in the beginning and 905.8MB in the end (delta: -845.5MB). Peak memory consumption was 239.5MB. Max. memory is 16.1GB. [2021-11-22 20:00:08,920 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 98.6MB. Free memory is still 55.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 20:00:08,920 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1739.18ms. Allocated memory was 98.6MB in the beginning and 167.8MB in the end (delta: 69.2MB). Free memory was 60.1MB in the beginning and 74.3MB in the end (delta: -14.2MB). Peak memory consumption was 54.7MB. Max. memory is 16.1GB. [2021-11-22 20:00:08,920 INFO L158 Benchmark]: Boogie Procedure Inliner took 187.78ms. Allocated memory is still 167.8MB. Free memory was 74.3MB in the beginning and 106.6MB in the end (delta: -32.3MB). Peak memory consumption was 11.4MB. Max. memory is 16.1GB. [2021-11-22 20:00:08,920 INFO L158 Benchmark]: Boogie Preprocessor took 84.81ms. Allocated memory is still 167.8MB. Free memory was 106.6MB in the beginning and 97.0MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-22 20:00:08,920 INFO L158 Benchmark]: RCFGBuilder took 1367.80ms. Allocated memory was 167.8MB in the beginning and 211.8MB in the end (delta: 44.0MB). Free memory was 97.0MB in the beginning and 119.2MB in the end (delta: -22.2MB). Peak memory consumption was 55.2MB. Max. memory is 16.1GB. [2021-11-22 20:00:08,920 INFO L158 Benchmark]: TraceAbstraction took 50376.68ms. Allocated memory was 211.8MB in the beginning and 1.2GB in the end (delta: 971.0MB). Free memory was 118.5MB in the beginning and 905.8MB in the end (delta: -787.3MB). Peak memory consumption was 185.2MB. Max. memory is 16.1GB. [2021-11-22 20:00:08,921 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 98.6MB. Free memory is still 55.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1739.18ms. Allocated memory was 98.6MB in the beginning and 167.8MB in the end (delta: 69.2MB). Free memory was 60.1MB in the beginning and 74.3MB in the end (delta: -14.2MB). Peak memory consumption was 54.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 187.78ms. Allocated memory is still 167.8MB. Free memory was 74.3MB in the beginning and 106.6MB in the end (delta: -32.3MB). Peak memory consumption was 11.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 84.81ms. Allocated memory is still 167.8MB. Free memory was 106.6MB in the beginning and 97.0MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * RCFGBuilder took 1367.80ms. Allocated memory was 167.8MB in the beginning and 211.8MB in the end (delta: 44.0MB). Free memory was 97.0MB in the beginning and 119.2MB in the end (delta: -22.2MB). Peak memory consumption was 55.2MB. Max. memory is 16.1GB. * TraceAbstraction took 50376.68ms. Allocated memory was 211.8MB in the beginning and 1.2GB in the end (delta: 971.0MB). Free memory was 118.5MB in the beginning and 905.8MB in the end (delta: -787.3MB). Peak memory consumption was 185.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@311fc303 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@311fc303: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-22 20:00:08,936 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_byte_cursor_read_be64_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.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 9b90640eabcf61bf9b6c4e01fcd2a39b8b829676407f71504872cd65ce1f895a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-fcb8e13 [2021-11-22 20:00:10,568 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 20:00:10,570 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 20:00:10,607 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 20:00:10,608 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 20:00:10,611 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 20:00:10,612 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 20:00:10,615 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 20:00:10,617 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 20:00:10,620 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 20:00:10,622 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 20:00:10,624 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 20:00:10,625 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 20:00:10,627 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 20:00:10,628 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 20:00:10,630 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 20:00:10,631 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 20:00:10,632 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 20:00:10,633 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 20:00:10,638 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 20:00:10,639 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 20:00:10,640 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 20:00:10,641 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 20:00:10,642 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 20:00:10,646 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 20:00:10,646 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 20:00:10,647 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 20:00:10,648 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 20:00:10,648 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 20:00:10,649 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 20:00:10,649 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 20:00:10,649 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 20:00:10,650 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 20:00:10,651 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 20:00:10,652 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 20:00:10,652 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 20:00:10,652 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 20:00:10,653 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 20:00:10,653 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 20:00:10,654 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 20:00:10,654 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 20:00:10,655 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2021-11-22 20:00:10,683 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 20:00:10,683 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 20:00:10,684 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 20:00:10,684 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 20:00:10,686 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 20:00:10,686 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 20:00:10,686 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 20:00:10,686 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 20:00:10,686 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 20:00:10,687 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 20:00:10,687 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 20:00:10,687 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 20:00:10,688 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-22 20:00:10,688 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-22 20:00:10,688 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-22 20:00:10,688 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 20:00:10,688 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 20:00:10,688 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 20:00:10,689 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 20:00:10,689 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 20:00:10,689 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 20:00:10,689 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 20:00:10,689 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 20:00:10,689 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 20:00:10,689 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 20:00:10,690 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-22 20:00:10,690 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-22 20:00:10,690 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 20:00:10,690 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 20:00:10,690 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 20:00:10,690 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 20:00:10,691 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-22 20:00:10,691 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9b90640eabcf61bf9b6c4e01fcd2a39b8b829676407f71504872cd65ce1f895a [2021-11-22 20:00:10,938 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 20:00:10,956 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 20:00:10,958 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 20:00:10,959 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 20:00:10,959 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 20:00:10,960 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be64_harness.i [2021-11-22 20:00:11,004 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea2db8d73/7c159d3d72514917b85a1126eefe08ab/FLAG00113a8b6 [2021-11-22 20:00:11,567 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 20:00:11,571 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be64_harness.i [2021-11-22 20:00:11,602 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea2db8d73/7c159d3d72514917b85a1126eefe08ab/FLAG00113a8b6 [2021-11-22 20:00:11,765 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea2db8d73/7c159d3d72514917b85a1126eefe08ab [2021-11-22 20:00:11,767 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 20:00:11,768 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 20:00:11,771 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 20:00:11,771 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 20:00:11,774 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 20:00:11,774 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 08:00:11" (1/1) ... [2021-11-22 20:00:11,775 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d5fd68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:00:11, skipping insertion in model container [2021-11-22 20:00:11,775 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 08:00:11" (1/1) ... [2021-11-22 20:00:11,780 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 20:00:11,855 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 20:00:12,068 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_byte_cursor_read_be64_harness.i[4499,4512] [2021-11-22 20:00:12,073 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_byte_cursor_read_be64_harness.i[4559,4572] [2021-11-22 20:00:12,655 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:00:12,656 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:00:12,658 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:00:12,660 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:00:12,661 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:00:12,683 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:00:12,684 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:00:12,685 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:00:12,686 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:00:12,922 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-22 20:00:12,923 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-22 20:00:12,923 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-22 20:00:12,924 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-22 20:00:12,925 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-22 20:00:12,925 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-22 20:00:12,925 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-22 20:00:12,926 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-22 20:00:12,926 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-22 20:00:12,926 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-22 20:00:13,041 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-22 20:00:13,139 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:00:13,140 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:00:13,203 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 20:00:13,249 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-22 20:00:13,288 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 20:00:13,292 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_byte_cursor_read_be64_harness.i[4499,4512] [2021-11-22 20:00:13,292 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_byte_cursor_read_be64_harness.i[4559,4572] [2021-11-22 20:00:13,318 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:00:13,319 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:00:13,319 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:00:13,319 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:00:13,320 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:00:13,325 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:00:13,325 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:00:13,326 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:00:13,326 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:00:13,357 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-22 20:00:13,358 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-22 20:00:13,358 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-22 20:00:13,358 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-22 20:00:13,359 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-22 20:00:13,360 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-22 20:00:13,360 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-22 20:00:13,361 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-22 20:00:13,361 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-22 20:00:13,361 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-22 20:00:13,382 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-22 20:00:13,428 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:00:13,428 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:00:13,459 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 20:00:13,482 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 20:00:13,497 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_byte_cursor_read_be64_harness.i[4499,4512] [2021-11-22 20:00:13,498 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_byte_cursor_read_be64_harness.i[4559,4572] [2021-11-22 20:00:13,526 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:00:13,527 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:00:13,527 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:00:13,531 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:00:13,532 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:00:13,535 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:00:13,535 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:00:13,536 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:00:13,536 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:00:13,563 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-22 20:00:13,564 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-22 20:00:13,564 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-22 20:00:13,564 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-22 20:00:13,565 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-22 20:00:13,565 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-22 20:00:13,565 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-22 20:00:13,566 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-22 20:00:13,566 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-22 20:00:13,567 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-22 20:00:13,577 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-22 20:00:13,617 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:00:13,618 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:00:13,660 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 20:00:13,821 INFO L208 MainTranslator]: Completed translation [2021-11-22 20:00:13,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:00:13 WrapperNode [2021-11-22 20:00:13,822 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 20:00:13,823 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 20:00:13,823 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 20:00:13,823 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 20:00:13,828 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:00:13" (1/1) ... [2021-11-22 20:00:13,915 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:00:13" (1/1) ... [2021-11-22 20:00:13,989 INFO L137 Inliner]: procedures = 711, calls = 2645, calls flagged for inlining = 958, calls inlined = 64, statements flattened = 1551 [2021-11-22 20:00:13,989 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 20:00:13,991 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 20:00:13,991 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 20:00:13,991 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 20:00:13,997 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:00:13" (1/1) ... [2021-11-22 20:00:13,998 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:00:13" (1/1) ... [2021-11-22 20:00:14,011 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:00:13" (1/1) ... [2021-11-22 20:00:14,012 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:00:13" (1/1) ... [2021-11-22 20:00:14,077 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:00:13" (1/1) ... [2021-11-22 20:00:14,088 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:00:13" (1/1) ... [2021-11-22 20:00:14,100 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:00:13" (1/1) ... [2021-11-22 20:00:14,110 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 20:00:14,112 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 20:00:14,112 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 20:00:14,112 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 20:00:14,113 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:00:13" (1/1) ... [2021-11-22 20:00:14,118 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 20:00:14,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:00:14,136 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 20:00:14,159 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 20:00:14,166 INFO L130 BoogieDeclarations]: Found specification of procedure htonl [2021-11-22 20:00:14,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-22 20:00:14,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-22 20:00:14,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-22 20:00:14,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-22 20:00:14,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-22 20:00:14,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4 [2021-11-22 20:00:14,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-22 20:00:14,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 20:00:14,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-22 20:00:14,168 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-22 20:00:14,168 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-22 20:00:14,168 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-22 20:00:14,168 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-22 20:00:14,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 20:00:14,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 20:00:14,169 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-22 20:00:14,170 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-22 20:00:14,170 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-22 20:00:14,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-22 20:00:14,170 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-22 20:00:14,170 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-22 20:00:14,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-22 20:00:14,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-22 20:00:14,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-22 20:00:14,171 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intFLOATTYPE8 [2021-11-22 20:00:14,171 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intFLOATTYPE4 [2021-11-22 20:00:14,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE8 [2021-11-22 20:00:14,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-22 20:00:14,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-22 20:00:14,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-22 20:00:14,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-22 20:00:14,461 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 20:00:14,462 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 20:00:22,468 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 20:00:22,474 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 20:00:22,474 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-22 20:00:22,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 08:00:22 BoogieIcfgContainer [2021-11-22 20:00:22,476 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 20:00:22,477 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 20:00:22,477 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 20:00:22,479 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 20:00:22,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 08:00:11" (1/3) ... [2021-11-22 20:00:22,480 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f20b38a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 08:00:22, skipping insertion in model container [2021-11-22 20:00:22,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:00:13" (2/3) ... [2021-11-22 20:00:22,480 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f20b38a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 08:00:22, skipping insertion in model container [2021-11-22 20:00:22,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 08:00:22" (3/3) ... [2021-11-22 20:00:22,487 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_read_be64_harness.i [2021-11-22 20:00:22,493 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 20:00:22,494 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2021-11-22 20:00:22,533 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 20:00:22,537 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 20:00:22,538 INFO L340 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2021-11-22 20:00:22,551 INFO L276 IsEmpty]: Start isEmpty. Operand has 246 states, 231 states have (on average 1.4718614718614718) internal successors, (340), 245 states have internal predecessors, (340), 0 states have call successors, (0), 0 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 20:00:22,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-22 20:00:22,557 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:00:22,557 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:00:22,558 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-22 20:00:22,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:00:22,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1384509862, now seen corresponding path program 1 times [2021-11-22 20:00:22,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 20:00:22,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [242949990] [2021-11-22 20:00:22,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:00:22,575 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 20:00:22,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-22 20:00:22,577 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 20:00:22,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-22 20:00:23,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:00:23,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 1567 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-22 20:00:23,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:00:23,547 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 20:00:23,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 20:00:23,721 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 20:00:23,722 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 20:00:23,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [242949990] [2021-11-22 20:00:23,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [242949990] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 20:00:23,722 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:00:23,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-22 20:00:23,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501534174] [2021-11-22 20:00:23,724 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 20:00:23,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-22 20:00:23,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 20:00:23,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-22 20:00:23,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 20:00:23,746 INFO L87 Difference]: Start difference. First operand has 246 states, 231 states have (on average 1.4718614718614718) internal successors, (340), 245 states have internal predecessors, (340), 0 states have call successors, (0), 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 28.5) internal successors, (57), 2 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:00:23,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:00:23,773 INFO L93 Difference]: Finished difference Result 487 states and 673 transitions. [2021-11-22 20:00:23,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 20:00:23,788 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-22 20:00:23,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:00:23,802 INFO L225 Difference]: With dead ends: 487 [2021-11-22 20:00:23,802 INFO L226 Difference]: Without dead ends: 240 [2021-11-22 20:00:23,805 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 112 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 20:00:23,807 INFO L933 BasicCegarLoop]: 313 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, 313 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 20:00:23,808 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 20:00:23,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2021-11-22 20:00:23,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2021-11-22 20:00:23,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 226 states have (on average 1.3584070796460177) internal successors, (307), 239 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 20:00:23,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 307 transitions. [2021-11-22 20:00:23,859 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 307 transitions. Word has length 57 [2021-11-22 20:00:23,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:00:23,860 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 307 transitions. [2021-11-22 20:00:23,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:00:23,861 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 307 transitions. [2021-11-22 20:00:23,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-22 20:00:23,862 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:00:23,862 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:00:23,897 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-22 20:00:24,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-22 20:00:24,076 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-22 20:00:24,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:00:24,076 INFO L85 PathProgramCache]: Analyzing trace with hash -110980262, now seen corresponding path program 1 times [2021-11-22 20:00:24,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 20:00:24,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1066463121] [2021-11-22 20:00:24,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:00:24,079 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 20:00:24,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-22 20:00:24,080 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 20:00:24,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-22 20:00:24,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:00:24,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 1567 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-22 20:00:24,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:00:25,076 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 20:00:25,076 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 20:00:25,275 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 20:00:25,275 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 20:00:25,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1066463121] [2021-11-22 20:00:25,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1066463121] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 20:00:25,275 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:00:25,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-22 20:00:25,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225252823] [2021-11-22 20:00:25,276 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 20:00:25,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 20:00:25,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 20:00:25,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 20:00:25,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 20:00:25,278 INFO L87 Difference]: Start difference. First operand 240 states and 307 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:00:25,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:00:25,621 INFO L93 Difference]: Finished difference Result 455 states and 582 transitions. [2021-11-22 20:00:25,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 20:00:25,625 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-22 20:00:25,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:00:25,626 INFO L225 Difference]: With dead ends: 455 [2021-11-22 20:00:25,627 INFO L226 Difference]: Without dead ends: 240 [2021-11-22 20:00:25,627 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 110 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 20:00:25,628 INFO L933 BasicCegarLoop]: 290 mSDtfsCounter, 408 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 20:00:25,628 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [408 Valid, 430 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-22 20:00:25,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2021-11-22 20:00:25,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2021-11-22 20:00:25,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 226 states have (on average 1.345132743362832) internal successors, (304), 239 states have internal predecessors, (304), 0 states have call successors, (0), 0 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 20:00:25,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 304 transitions. [2021-11-22 20:00:25,640 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 304 transitions. Word has length 57 [2021-11-22 20:00:25,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:00:25,640 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 304 transitions. [2021-11-22 20:00:25,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:00:25,640 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 304 transitions. [2021-11-22 20:00:25,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-22 20:00:25,642 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:00:25,642 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:00:25,669 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-22 20:00:25,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-22 20:00:25,852 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-22 20:00:25,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:00:25,852 INFO L85 PathProgramCache]: Analyzing trace with hash -452004592, now seen corresponding path program 1 times [2021-11-22 20:00:25,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 20:00:25,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2053764563] [2021-11-22 20:00:25,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:00:25,854 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 20:00:25,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-22 20:00:25,855 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 20:00:25,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-22 20:00:26,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:00:26,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 1575 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-22 20:00:26,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:00:27,033 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 20:00:27,034 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 158 treesize of output 62 [2021-11-22 20:00:27,181 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 20:00:27,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 20:00:39,013 WARN L227 SmtUtils]: Spent 11.42s on a formula simplification. DAG size of input: 523 DAG size of output: 269 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-22 20:00:39,016 INFO L354 Elim1Store]: treesize reduction 837, result has 46.8 percent of original size [2021-11-22 20:00:39,017 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 129 treesize of output 772 Killed by 15