./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lookup_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 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_compare_lookup_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 0658a835d559c56129f1a85a00e9d3bbd205d66ef64b5c7d14ae72b3d1b496e0 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 03:16:11,714 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 03:16:11,718 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 03:16:11,768 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 03:16:11,768 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 03:16:11,771 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 03:16:11,773 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 03:16:11,778 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 03:16:11,781 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 03:16:11,785 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 03:16:11,786 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 03:16:11,790 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 03:16:11,791 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 03:16:11,793 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 03:16:11,794 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 03:16:11,797 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 03:16:11,798 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 03:16:11,799 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 03:16:11,801 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 03:16:11,808 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 03:16:11,810 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 03:16:11,811 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 03:16:11,811 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 03:16:11,813 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 03:16:11,819 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 03:16:11,820 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 03:16:11,820 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 03:16:11,822 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 03:16:11,822 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 03:16:11,823 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 03:16:11,823 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 03:16:11,824 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 03:16:11,825 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 03:16:11,826 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 03:16:11,827 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 03:16:11,828 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 03:16:11,828 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 03:16:11,828 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 03:16:11,829 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 03:16:11,830 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 03:16:11,831 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 03:16:11,831 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-28 03:16:11,870 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 03:16:11,870 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 03:16:11,871 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 03:16:11,872 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 03:16:11,872 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 03:16:11,873 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 03:16:11,874 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 03:16:11,874 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 03:16:11,874 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 03:16:11,875 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 03:16:11,875 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 03:16:11,876 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 03:16:11,876 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 03:16:11,876 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 03:16:11,876 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 03:16:11,876 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 03:16:11,877 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 03:16:11,877 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 03:16:11,877 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 03:16:11,877 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 03:16:11,877 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 03:16:11,877 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:16:11,878 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 03:16:11,878 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 03:16:11,878 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 03:16:11,878 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 03:16:11,878 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 03:16:11,879 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 03:16:11,879 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 03:16:11,879 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 03:16:11,879 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0658a835d559c56129f1a85a00e9d3bbd205d66ef64b5c7d14ae72b3d1b496e0 [2021-12-28 03:16:12,200 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 03:16:12,224 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 03:16:12,227 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 03:16:12,228 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 03:16:12,229 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 03:16:12,230 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lookup_harness.i [2021-12-28 03:16:12,282 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/904fac8c5/e5bbee9967aa46bb86524284e6678df5/FLAG914a42d2a [2021-12-28 03:16:13,077 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 03:16:13,078 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lookup_harness.i [2021-12-28 03:16:13,119 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/904fac8c5/e5bbee9967aa46bb86524284e6678df5/FLAG914a42d2a [2021-12-28 03:16:13,289 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/904fac8c5/e5bbee9967aa46bb86524284e6678df5 [2021-12-28 03:16:13,291 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 03:16:13,293 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 03:16:13,295 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 03:16:13,295 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 03:16:13,298 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 03:16:13,298 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:16:13" (1/1) ... [2021-12-28 03:16:13,299 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ffce40b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:16:13, skipping insertion in model container [2021-12-28 03:16:13,299 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:16:13" (1/1) ... [2021-12-28 03:16:13,305 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 03:16:13,408 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 03:16:13,667 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_compare_lookup_harness.i[4504,4517] [2021-12-28 03:16:13,675 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_compare_lookup_harness.i[4564,4577] [2021-12-28 03:16:14,407 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:16:14,408 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:16:14,409 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:16:14,409 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:16:14,410 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:16:14,420 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:16:14,423 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:16:14,427 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:16:14,428 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:16:14,723 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-28 03:16:14,725 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-28 03:16:14,725 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-28 03:16:14,726 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-28 03:16:14,727 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-28 03:16:14,728 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-28 03:16:14,728 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-28 03:16:14,729 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-28 03:16:14,729 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-28 03:16:14,730 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-28 03:16:14,824 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-28 03:16:14,906 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:16:14,917 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:16:14,995 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:16:15,061 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 03:16:15,083 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_compare_lookup_harness.i[4504,4517] [2021-12-28 03:16:15,084 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_compare_lookup_harness.i[4564,4577] [2021-12-28 03:16:15,132 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:16:15,133 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:16:15,134 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:16:15,135 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:16:15,137 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:16:15,144 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:16:15,147 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:16:15,151 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:16:15,151 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:16:15,177 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-28 03:16:15,178 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-28 03:16:15,178 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-28 03:16:15,179 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-28 03:16:15,180 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-28 03:16:15,180 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-28 03:16:15,181 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-28 03:16:15,181 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-28 03:16:15,182 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-28 03:16:15,182 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-28 03:16:15,208 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-28 03:16:15,270 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:16:15,271 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:16:15,299 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:16:15,499 INFO L208 MainTranslator]: Completed translation [2021-12-28 03:16:15,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:16:15 WrapperNode [2021-12-28 03:16:15,500 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 03:16:15,501 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 03:16:15,501 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 03:16:15,501 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 03:16:15,507 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:16:15" (1/1) ... [2021-12-28 03:16:15,656 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:16:15" (1/1) ... [2021-12-28 03:16:15,759 INFO L137 Inliner]: procedures = 691, calls = 2649, calls flagged for inlining = 58, calls inlined = 4, statements flattened = 829 [2021-12-28 03:16:15,760 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 03:16:15,761 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 03:16:15,761 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 03:16:15,761 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 03:16:15,768 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:16:15" (1/1) ... [2021-12-28 03:16:15,768 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:16:15" (1/1) ... [2021-12-28 03:16:15,786 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:16:15" (1/1) ... [2021-12-28 03:16:15,787 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:16:15" (1/1) ... [2021-12-28 03:16:15,830 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:16:15" (1/1) ... [2021-12-28 03:16:15,843 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:16:15" (1/1) ... [2021-12-28 03:16:15,850 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:16:15" (1/1) ... [2021-12-28 03:16:15,867 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 03:16:15,873 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 03:16:15,874 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 03:16:15,874 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 03:16:15,874 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:16:15" (1/1) ... [2021-12-28 03:16:15,880 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:16:15,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:16:15,908 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) [2021-12-28 03:16:15,929 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 [2021-12-28 03:16:15,945 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2021-12-28 03:16:15,945 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2021-12-28 03:16:15,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 03:16:15,946 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-12-28 03:16:15,946 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-12-28 03:16:15,946 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-28 03:16:15,946 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_bounded [2021-12-28 03:16:15,947 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_bounded [2021-12-28 03:16:15,947 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-28 03:16:15,947 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-28 03:16:15,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-28 03:16:15,948 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 03:16:15,948 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2021-12-28 03:16:15,949 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2021-12-28 03:16:15,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-28 03:16:15,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 03:16:15,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 03:16:15,950 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-28 03:16:15,950 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-28 03:16:15,950 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-12-28 03:16:15,950 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-12-28 03:16:15,950 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-28 03:16:15,950 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-28 03:16:15,951 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-28 03:16:15,951 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-28 03:16:15,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-28 03:16:15,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-28 03:16:15,952 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_byte_cursor_has_allocated_buffer_member [2021-12-28 03:16:15,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_byte_cursor_has_allocated_buffer_member [2021-12-28 03:16:15,952 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_compare_lookup [2021-12-28 03:16:15,953 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_compare_lookup [2021-12-28 03:16:15,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 03:16:16,234 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 03:16:16,235 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 03:16:17,286 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 03:16:17,295 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 03:16:17,295 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-28 03:16:17,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:16:17 BoogieIcfgContainer [2021-12-28 03:16:17,297 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 03:16:17,299 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 03:16:17,299 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 03:16:17,301 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 03:16:17,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 03:16:13" (1/3) ... [2021-12-28 03:16:17,302 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@421f6249 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:16:17, skipping insertion in model container [2021-12-28 03:16:17,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:16:15" (2/3) ... [2021-12-28 03:16:17,303 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@421f6249 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:16:17, skipping insertion in model container [2021-12-28 03:16:17,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:16:17" (3/3) ... [2021-12-28 03:16:17,304 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_compare_lookup_harness.i [2021-12-28 03:16:17,308 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 03:16:17,308 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 03:16:17,346 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 03:16:17,351 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 [2021-12-28 03:16:17,352 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-28 03:16:17,368 INFO L276 IsEmpty]: Start isEmpty. Operand has 133 states, 80 states have (on average 1.2625) internal successors, (101), 81 states have internal predecessors, (101), 41 states have call successors, (41), 10 states have call predecessors, (41), 10 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2021-12-28 03:16:17,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-28 03:16:17,378 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:16:17,378 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:16:17,379 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:16:17,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:16:17,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1628753842, now seen corresponding path program 1 times [2021-12-28 03:16:17,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:16:17,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655522277] [2021-12-28 03:16:17,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:16:17,391 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:16:17,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:17,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:16:17,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:17,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:16:17,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:17,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:16:18,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:18,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:16:18,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:18,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 03:16:18,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:18,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-28 03:16:18,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:18,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 03:16:18,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:18,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 03:16:18,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:18,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-28 03:16:18,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:18,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-28 03:16:18,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:18,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-28 03:16:18,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:18,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-28 03:16:18,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:18,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-28 03:16:18,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:18,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-28 03:16:18,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:18,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-28 03:16:18,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:18,211 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2021-12-28 03:16:18,211 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:16:18,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655522277] [2021-12-28 03:16:18,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655522277] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:16:18,212 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:16:18,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 03:16:18,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144060164] [2021-12-28 03:16:18,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:16:18,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 03:16:18,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:16:18,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 03:16:18,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-28 03:16:18,251 INFO L87 Difference]: Start difference. First operand has 133 states, 80 states have (on average 1.2625) internal successors, (101), 81 states have internal predecessors, (101), 41 states have call successors, (41), 10 states have call predecessors, (41), 10 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-28 03:16:18,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:16:18,614 INFO L93 Difference]: Finished difference Result 265 states and 391 transitions. [2021-12-28 03:16:18,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 03:16:18,617 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 95 [2021-12-28 03:16:18,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:16:18,625 INFO L225 Difference]: With dead ends: 265 [2021-12-28 03:16:18,625 INFO L226 Difference]: Without dead ends: 130 [2021-12-28 03:16:18,633 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-28 03:16:18,636 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 63 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-28 03:16:18,637 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 201 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-28 03:16:18,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-12-28 03:16:18,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 127. [2021-12-28 03:16:18,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 75 states have (on average 1.2266666666666666) internal successors, (92), 76 states have internal predecessors, (92), 41 states have call successors, (41), 10 states have call predecessors, (41), 10 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2021-12-28 03:16:18,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 173 transitions. [2021-12-28 03:16:18,681 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 173 transitions. Word has length 95 [2021-12-28 03:16:18,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:16:18,682 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 173 transitions. [2021-12-28 03:16:18,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-28 03:16:18,682 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 173 transitions. [2021-12-28 03:16:18,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-28 03:16:18,686 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:16:18,686 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:16:18,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 03:16:18,687 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:16:18,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:16:18,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1573250628, now seen corresponding path program 1 times [2021-12-28 03:16:18,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:16:18,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230937890] [2021-12-28 03:16:18,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:16:18,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:16:18,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:18,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:16:18,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:18,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:16:18,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:18,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:16:18,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:18,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:16:18,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:18,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 03:16:18,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:18,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-28 03:16:18,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:18,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 03:16:18,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:19,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 03:16:19,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:19,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-28 03:16:19,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:19,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-28 03:16:19,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:19,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-28 03:16:19,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:19,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-28 03:16:19,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:19,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-28 03:16:19,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:19,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-28 03:16:19,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:19,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-28 03:16:19,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:19,096 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-12-28 03:16:19,096 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:16:19,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230937890] [2021-12-28 03:16:19,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230937890] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:16:19,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460765596] [2021-12-28 03:16:19,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:16:19,098 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:16:19,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:16:19,099 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) [2021-12-28 03:16:19,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-28 03:16:19,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:19,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 2650 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-28 03:16:19,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:16:19,923 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-28 03:16:19,923 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:16:19,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [460765596] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:16:19,924 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:16:19,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2021-12-28 03:16:19,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449188217] [2021-12-28 03:16:19,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:16:19,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 03:16:19,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:16:19,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 03:16:19,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-12-28 03:16:19,928 INFO L87 Difference]: Start difference. First operand 127 states and 173 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-28 03:16:20,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:16:20,121 INFO L93 Difference]: Finished difference Result 250 states and 347 transitions. [2021-12-28 03:16:20,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 03:16:20,123 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 95 [2021-12-28 03:16:20,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:16:20,127 INFO L225 Difference]: With dead ends: 250 [2021-12-28 03:16:20,128 INFO L226 Difference]: Without dead ends: 130 [2021-12-28 03:16:20,132 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-12-28 03:16:20,137 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 187 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:16:20,138 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [193 Valid, 376 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 03:16:20,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-12-28 03:16:20,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2021-12-28 03:16:20,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 77 states have (on average 1.2207792207792207) internal successors, (94), 79 states have internal predecessors, (94), 41 states have call successors, (41), 10 states have call predecessors, (41), 11 states have return successors, (48), 40 states have call predecessors, (48), 40 states have call successors, (48) [2021-12-28 03:16:20,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 183 transitions. [2021-12-28 03:16:20,167 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 183 transitions. Word has length 95 [2021-12-28 03:16:20,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:16:20,168 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 183 transitions. [2021-12-28 03:16:20,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-28 03:16:20,169 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 183 transitions. [2021-12-28 03:16:20,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-28 03:16:20,171 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:16:20,171 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:16:20,201 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-28 03:16:20,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:16:20,392 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:16:20,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:16:20,392 INFO L85 PathProgramCache]: Analyzing trace with hash -513109833, now seen corresponding path program 1 times [2021-12-28 03:16:20,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:16:20,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680287647] [2021-12-28 03:16:20,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:16:20,393 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:16:20,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:20,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:16:20,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:20,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:16:20,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:20,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:16:20,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:20,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:16:20,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:20,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 03:16:20,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:20,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 03:16:20,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:20,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 03:16:20,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:20,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-28 03:16:20,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:20,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-28 03:16:20,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:20,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-28 03:16:20,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:20,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-28 03:16:20,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:20,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-28 03:16:20,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:20,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-28 03:16:20,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:20,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-28 03:16:20,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:20,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-28 03:16:20,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:20,834 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-12-28 03:16:20,834 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:16:20,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680287647] [2021-12-28 03:16:20,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680287647] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:16:20,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283174543] [2021-12-28 03:16:20,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:16:20,835 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:16:20,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:16:20,836 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) [2021-12-28 03:16:20,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-28 03:16:21,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:21,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 2655 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-28 03:16:21,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:16:21,606 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-12-28 03:16:21,606 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:16:21,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1283174543] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:16:21,607 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:16:21,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 18 [2021-12-28 03:16:21,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431758543] [2021-12-28 03:16:21,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:16:21,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-28 03:16:21,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:16:21,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-28 03:16:21,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2021-12-28 03:16:21,609 INFO L87 Difference]: Start difference. First operand 130 states and 183 transitions. Second operand has 8 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 4 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2021-12-28 03:16:21,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:16:21,925 INFO L93 Difference]: Finished difference Result 210 states and 301 transitions. [2021-12-28 03:16:21,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-28 03:16:21,926 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 4 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) Word has length 97 [2021-12-28 03:16:21,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:16:21,928 INFO L225 Difference]: With dead ends: 210 [2021-12-28 03:16:21,928 INFO L226 Difference]: Without dead ends: 130 [2021-12-28 03:16:21,929 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=435, Unknown=0, NotChecked=0, Total=506 [2021-12-28 03:16:21,930 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 204 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 669 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-28 03:16:21,931 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [204 Valid, 669 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-28 03:16:21,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-12-28 03:16:21,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2021-12-28 03:16:21,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 77 states have (on average 1.2207792207792207) internal successors, (94), 79 states have internal predecessors, (94), 41 states have call successors, (41), 10 states have call predecessors, (41), 11 states have return successors, (45), 40 states have call predecessors, (45), 40 states have call successors, (45) [2021-12-28 03:16:21,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 180 transitions. [2021-12-28 03:16:21,944 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 180 transitions. Word has length 97 [2021-12-28 03:16:21,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:16:21,945 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 180 transitions. [2021-12-28 03:16:21,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 4 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2021-12-28 03:16:21,945 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 180 transitions. [2021-12-28 03:16:21,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-28 03:16:21,947 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:16:21,947 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:16:21,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-28 03:16:22,151 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,SelfDestructingSolverStorable2 [2021-12-28 03:16:22,152 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:16:22,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:16:22,152 INFO L85 PathProgramCache]: Analyzing trace with hash -199598313, now seen corresponding path program 2 times [2021-12-28 03:16:22,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:16:22,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95181825] [2021-12-28 03:16:22,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:16:22,153 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:16:22,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:22,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:16:22,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:22,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:16:22,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:22,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:16:22,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:22,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:16:22,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:22,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 03:16:22,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:22,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 03:16:22,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:22,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 03:16:22,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:22,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-28 03:16:22,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:22,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-28 03:16:22,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:22,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-28 03:16:22,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:22,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-28 03:16:22,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:22,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-28 03:16:22,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:22,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-28 03:16:22,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:22,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-28 03:16:22,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:22,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-28 03:16:22,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:22,546 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2021-12-28 03:16:22,547 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:16:22,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95181825] [2021-12-28 03:16:22,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95181825] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:16:22,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10579758] [2021-12-28 03:16:22,547 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-28 03:16:22,548 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:16:22,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:16:22,549 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) [2021-12-28 03:16:22,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-28 03:16:22,952 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-28 03:16:22,952 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 03:16:22,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 2337 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-28 03:16:23,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:16:23,237 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-12-28 03:16:23,237 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:16:23,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [10579758] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:16:23,238 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:16:23,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2021-12-28 03:16:23,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292989839] [2021-12-28 03:16:23,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:16:23,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-28 03:16:23,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:16:23,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-28 03:16:23,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-12-28 03:16:23,240 INFO L87 Difference]: Start difference. First operand 130 states and 180 transitions. Second operand has 8 states, 7 states have (on average 5.857142857142857) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2021-12-28 03:16:23,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:16:23,308 INFO L93 Difference]: Finished difference Result 142 states and 201 transitions. [2021-12-28 03:16:23,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-28 03:16:23,309 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.857142857142857) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 101 [2021-12-28 03:16:23,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:16:23,311 INFO L225 Difference]: With dead ends: 142 [2021-12-28 03:16:23,311 INFO L226 Difference]: Without dead ends: 140 [2021-12-28 03:16:23,311 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2021-12-28 03:16:23,312 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 16 mSDsluCounter, 1036 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 1215 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 03:16:23,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 1215 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 03:16:23,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-12-28 03:16:23,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 139. [2021-12-28 03:16:23,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 83 states have (on average 1.2048192771084338) internal successors, (100), 86 states have internal predecessors, (100), 42 states have call successors, (42), 11 states have call predecessors, (42), 13 states have return successors, (56), 41 states have call predecessors, (56), 41 states have call successors, (56) [2021-12-28 03:16:23,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 198 transitions. [2021-12-28 03:16:23,328 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 198 transitions. Word has length 101 [2021-12-28 03:16:23,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:16:23,329 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 198 transitions. [2021-12-28 03:16:23,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.857142857142857) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2021-12-28 03:16:23,330 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 198 transitions. [2021-12-28 03:16:23,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-28 03:16:23,331 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:16:23,331 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:16:23,362 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-28 03:16:23,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:16:23,545 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:16:23,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:16:23,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1826692575, now seen corresponding path program 1 times [2021-12-28 03:16:23,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:16:23,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031584848] [2021-12-28 03:16:23,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:16:23,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:16:23,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:23,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:16:23,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:23,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:16:23,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:23,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:16:23,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:23,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:16:23,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:23,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 03:16:23,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:23,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 03:16:23,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:23,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 03:16:23,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:23,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-28 03:16:23,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:23,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-28 03:16:23,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:23,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-28 03:16:23,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:23,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-28 03:16:23,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:23,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-28 03:16:23,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:23,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-28 03:16:23,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:23,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-28 03:16:23,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:23,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-28 03:16:23,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:23,874 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2021-12-28 03:16:23,875 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:16:23,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031584848] [2021-12-28 03:16:23,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031584848] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:16:23,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22957013] [2021-12-28 03:16:23,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:16:23,876 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:16:23,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:16:23,877 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) [2021-12-28 03:16:23,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-28 03:16:24,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:24,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 2674 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-28 03:16:24,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:16:24,637 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-28 03:16:24,637 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:16:24,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [22957013] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:16:24,637 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:16:24,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2021-12-28 03:16:24,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670379821] [2021-12-28 03:16:24,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:16:24,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-28 03:16:24,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:16:24,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-28 03:16:24,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2021-12-28 03:16:24,639 INFO L87 Difference]: Start difference. First operand 139 states and 198 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 7 states have internal predecessors, (49), 4 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2021-12-28 03:16:24,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:16:24,921 INFO L93 Difference]: Finished difference Result 272 states and 404 transitions. [2021-12-28 03:16:24,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-28 03:16:24,922 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 7 states have internal predecessors, (49), 4 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 101 [2021-12-28 03:16:24,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:16:24,924 INFO L225 Difference]: With dead ends: 272 [2021-12-28 03:16:24,924 INFO L226 Difference]: Without dead ends: 168 [2021-12-28 03:16:24,925 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2021-12-28 03:16:24,925 INFO L933 BasicCegarLoop]: 136 mSDtfsCounter, 249 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 650 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-28 03:16:24,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [252 Valid, 650 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-28 03:16:24,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2021-12-28 03:16:24,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2021-12-28 03:16:24,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 97 states have (on average 1.2268041237113403) internal successors, (119), 100 states have internal predecessors, (119), 56 states have call successors, (56), 12 states have call predecessors, (56), 14 states have return successors, (74), 55 states have call predecessors, (74), 55 states have call successors, (74) [2021-12-28 03:16:24,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 249 transitions. [2021-12-28 03:16:24,945 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 249 transitions. Word has length 101 [2021-12-28 03:16:24,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:16:24,945 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 249 transitions. [2021-12-28 03:16:24,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 7 states have internal predecessors, (49), 4 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2021-12-28 03:16:24,946 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 249 transitions. [2021-12-28 03:16:24,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-28 03:16:24,947 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:16:24,947 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:16:24,980 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-28 03:16:25,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:16:25,165 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:16:25,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:16:25,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1515977756, now seen corresponding path program 1 times [2021-12-28 03:16:25,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:16:25,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612065073] [2021-12-28 03:16:25,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:16:25,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:16:25,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:25,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:16:25,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:25,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:16:25,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:25,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:16:25,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:25,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:16:25,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:25,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 03:16:25,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:25,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 03:16:25,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:25,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 03:16:25,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:25,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-28 03:16:25,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:25,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-28 03:16:25,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:25,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-28 03:16:25,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:25,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-28 03:16:25,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:25,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-28 03:16:25,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:25,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-28 03:16:25,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:25,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-28 03:16:25,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:25,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-28 03:16:25,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:25,543 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2021-12-28 03:16:25,543 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:16:25,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612065073] [2021-12-28 03:16:25,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612065073] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:16:25,544 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:16:25,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-28 03:16:25,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207530604] [2021-12-28 03:16:25,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:16:25,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-28 03:16:25,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:16:25,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-28 03:16:25,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-28 03:16:25,546 INFO L87 Difference]: Start difference. First operand 168 states and 249 transitions. Second operand has 10 states, 9 states have (on average 4.444444444444445) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2021-12-28 03:16:26,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:16:26,260 INFO L93 Difference]: Finished difference Result 181 states and 264 transitions. [2021-12-28 03:16:26,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-28 03:16:26,261 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.444444444444445) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 103 [2021-12-28 03:16:26,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:16:26,263 INFO L225 Difference]: With dead ends: 181 [2021-12-28 03:16:26,263 INFO L226 Difference]: Without dead ends: 179 [2021-12-28 03:16:26,263 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2021-12-28 03:16:26,264 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 80 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 820 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-28 03:16:26,264 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 528 Invalid, 869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 820 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-28 03:16:26,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-12-28 03:16:26,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 174. [2021-12-28 03:16:26,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 100 states have (on average 1.22) internal successors, (122), 103 states have internal predecessors, (122), 58 states have call successors, (58), 13 states have call predecessors, (58), 15 states have return successors, (76), 57 states have call predecessors, (76), 57 states have call successors, (76) [2021-12-28 03:16:26,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 256 transitions. [2021-12-28 03:16:26,282 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 256 transitions. Word has length 103 [2021-12-28 03:16:26,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:16:26,282 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 256 transitions. [2021-12-28 03:16:26,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.444444444444445) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2021-12-28 03:16:26,283 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 256 transitions. [2021-12-28 03:16:26,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-12-28 03:16:26,284 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:16:26,284 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:16:26,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-28 03:16:26,285 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:16:26,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:16:26,285 INFO L85 PathProgramCache]: Analyzing trace with hash 101250906, now seen corresponding path program 1 times [2021-12-28 03:16:26,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:16:26,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910961624] [2021-12-28 03:16:26,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:16:26,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:16:26,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:26,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:16:26,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:26,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:16:26,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:26,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:16:26,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:26,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:16:26,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:26,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 03:16:26,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:26,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 03:16:26,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:26,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 03:16:26,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:26,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-28 03:16:26,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:26,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-28 03:16:26,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:26,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-28 03:16:26,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:26,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-28 03:16:26,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:26,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-28 03:16:26,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:26,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-28 03:16:26,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:26,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-28 03:16:26,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:26,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-28 03:16:26,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:26,846 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 18 proven. 11 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-12-28 03:16:26,846 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:16:26,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910961624] [2021-12-28 03:16:26,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910961624] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:16:26,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125470411] [2021-12-28 03:16:26,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:16:26,847 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:16:26,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:16:26,852 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) [2021-12-28 03:16:26,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-28 03:16:27,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:27,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 2682 conjuncts, 58 conjunts are in the unsatisfiable core [2021-12-28 03:16:27,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:16:27,342 INFO L387 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 10 treesize of output 8 [2021-12-28 03:16:27,703 INFO L353 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-12-28 03:16:27,704 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 35 [2021-12-28 03:16:34,046 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 48 proven. 16 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-12-28 03:16:34,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:16:44,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1125470411] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:16:44,094 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-28 03:16:44,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 18] total 25 [2021-12-28 03:16:44,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017268690] [2021-12-28 03:16:44,095 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-28 03:16:44,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-28 03:16:44,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:16:44,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-28 03:16:44,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=802, Unknown=5, NotChecked=0, Total=930 [2021-12-28 03:16:44,098 INFO L87 Difference]: Start difference. First operand 174 states and 256 transitions. Second operand has 25 states, 24 states have (on average 3.875) internal successors, (93), 22 states have internal predecessors, (93), 9 states have call successors, (32), 8 states have call predecessors, (32), 7 states have return successors, (29), 8 states have call predecessors, (29), 7 states have call successors, (29) [2021-12-28 03:16:46,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:16:46,557 INFO L93 Difference]: Finished difference Result 443 states and 678 transitions. [2021-12-28 03:16:46,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-12-28 03:16:46,558 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 3.875) internal successors, (93), 22 states have internal predecessors, (93), 9 states have call successors, (32), 8 states have call predecessors, (32), 7 states have return successors, (29), 8 states have call predecessors, (29), 7 states have call successors, (29) Word has length 107 [2021-12-28 03:16:46,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:16:46,560 INFO L225 Difference]: With dead ends: 443 [2021-12-28 03:16:46,560 INFO L226 Difference]: Without dead ends: 322 [2021-12-28 03:16:46,562 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 175 SyntacticMatches, 21 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 698 ImplicationChecksByTransitivity, 15.9s TimeCoverageRelationStatistics Valid=254, Invalid=1546, Unknown=6, NotChecked=0, Total=1806 [2021-12-28 03:16:46,562 INFO L933 BasicCegarLoop]: 220 mSDtfsCounter, 213 mSDsluCounter, 763 mSDsCounter, 0 mSdLazyCounter, 1307 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 983 SdHoareTripleChecker+Invalid, 2228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 1307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 810 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-28 03:16:46,563 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [263 Valid, 983 Invalid, 2228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 1307 Invalid, 0 Unknown, 810 Unchecked, 1.2s Time] [2021-12-28 03:16:46,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2021-12-28 03:16:46,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 265. [2021-12-28 03:16:46,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 157 states have (on average 1.21656050955414) internal successors, (191), 162 states have internal predecessors, (191), 85 states have call successors, (85), 19 states have call predecessors, (85), 22 states have return successors, (118), 83 states have call predecessors, (118), 84 states have call successors, (118) [2021-12-28 03:16:46,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 394 transitions. [2021-12-28 03:16:46,601 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 394 transitions. Word has length 107 [2021-12-28 03:16:46,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:16:46,602 INFO L470 AbstractCegarLoop]: Abstraction has 265 states and 394 transitions. [2021-12-28 03:16:46,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 3.875) internal successors, (93), 22 states have internal predecessors, (93), 9 states have call successors, (32), 8 states have call predecessors, (32), 7 states have return successors, (29), 8 states have call predecessors, (29), 7 states have call successors, (29) [2021-12-28 03:16:46,603 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 394 transitions. [2021-12-28 03:16:46,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-28 03:16:46,608 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:16:46,608 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:16:46,641 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-28 03:16:46,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:16:46,828 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:16:46,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:16:46,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1582523535, now seen corresponding path program 1 times [2021-12-28 03:16:46,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:16:46,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990270639] [2021-12-28 03:16:46,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:16:46,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:16:47,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:47,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:16:47,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:47,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:16:47,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:47,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:16:47,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:47,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:16:47,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:47,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 03:16:47,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:47,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 03:16:47,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:47,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 03:16:47,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:47,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-28 03:16:47,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:47,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-28 03:16:47,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:47,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:16:47,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:47,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-28 03:16:47,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:47,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-28 03:16:47,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:47,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-28 03:16:47,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:47,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-28 03:16:47,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:47,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-28 03:16:47,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:47,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-28 03:16:47,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:47,351 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2021-12-28 03:16:47,351 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:16:47,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990270639] [2021-12-28 03:16:47,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990270639] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:16:47,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1007200725] [2021-12-28 03:16:47,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:16:47,352 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:16:47,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:16:47,354 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) [2021-12-28 03:16:47,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-28 03:16:47,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:47,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 2748 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-28 03:16:47,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:16:48,081 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-28 03:16:48,081 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:16:48,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1007200725] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:16:48,082 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:16:48,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 16 [2021-12-28 03:16:48,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336740876] [2021-12-28 03:16:48,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:16:48,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-28 03:16:48,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:16:48,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-28 03:16:48,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2021-12-28 03:16:48,083 INFO L87 Difference]: Start difference. First operand 265 states and 394 transitions. Second operand has 9 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-28 03:16:48,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:16:48,227 INFO L93 Difference]: Finished difference Result 460 states and 708 transitions. [2021-12-28 03:16:48,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-28 03:16:48,227 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 118 [2021-12-28 03:16:48,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:16:48,230 INFO L225 Difference]: With dead ends: 460 [2021-12-28 03:16:48,230 INFO L226 Difference]: Without dead ends: 270 [2021-12-28 03:16:48,231 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2021-12-28 03:16:48,232 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 12 mSDsluCounter, 1158 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1330 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:16:48,232 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 1330 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 03:16:48,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2021-12-28 03:16:48,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 270. [2021-12-28 03:16:48,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 161 states have (on average 1.2111801242236024) internal successors, (195), 167 states have internal predecessors, (195), 85 states have call successors, (85), 19 states have call predecessors, (85), 23 states have return successors, (135), 83 states have call predecessors, (135), 84 states have call successors, (135) [2021-12-28 03:16:48,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 415 transitions. [2021-12-28 03:16:48,256 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 415 transitions. Word has length 118 [2021-12-28 03:16:48,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:16:48,256 INFO L470 AbstractCegarLoop]: Abstraction has 270 states and 415 transitions. [2021-12-28 03:16:48,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-28 03:16:48,257 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 415 transitions. [2021-12-28 03:16:48,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-12-28 03:16:48,258 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:16:48,258 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:16:48,290 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-28 03:16:48,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:16:48,477 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:16:48,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:16:48,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1705417372, now seen corresponding path program 1 times [2021-12-28 03:16:48,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:16:48,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826708985] [2021-12-28 03:16:48,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:16:48,478 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:16:48,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:48,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:16:48,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:48,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:16:48,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:48,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:16:48,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:48,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:16:48,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:48,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 03:16:48,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:48,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 03:16:48,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:48,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 03:16:48,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:48,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-28 03:16:48,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:48,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-28 03:16:48,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:48,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-28 03:16:48,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:48,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-28 03:16:48,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:48,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-28 03:16:48,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:48,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-28 03:16:48,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:48,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-28 03:16:48,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:48,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-28 03:16:48,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:48,907 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2021-12-28 03:16:48,908 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:16:48,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826708985] [2021-12-28 03:16:48,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826708985] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:16:48,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326006174] [2021-12-28 03:16:48,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:16:48,909 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:16:48,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:16:48,910 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) [2021-12-28 03:16:48,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-28 03:16:49,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:49,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 2691 conjuncts, 44 conjunts are in the unsatisfiable core [2021-12-28 03:16:49,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:16:49,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:16:49,726 INFO L353 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-12-28 03:16:49,726 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 35 [2021-12-28 03:16:50,338 INFO L387 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 66 treesize of output 42 [2021-12-28 03:16:50,442 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 42 proven. 12 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-28 03:16:50,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:16:51,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1326006174] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:16:51,164 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-28 03:16:51,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 14] total 19 [2021-12-28 03:16:51,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688637106] [2021-12-28 03:16:51,164 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-28 03:16:51,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-28 03:16:51,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:16:51,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-28 03:16:51,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2021-12-28 03:16:51,165 INFO L87 Difference]: Start difference. First operand 270 states and 415 transitions. Second operand has 19 states, 18 states have (on average 4.777777777777778) internal successors, (86), 16 states have internal predecessors, (86), 8 states have call successors, (32), 7 states have call predecessors, (32), 5 states have return successors, (29), 7 states have call predecessors, (29), 8 states have call successors, (29) [2021-12-28 03:16:53,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:16:53,318 INFO L93 Difference]: Finished difference Result 520 states and 822 transitions. [2021-12-28 03:16:53,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-12-28 03:16:53,318 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 4.777777777777778) internal successors, (86), 16 states have internal predecessors, (86), 8 states have call successors, (32), 7 states have call predecessors, (32), 5 states have return successors, (29), 7 states have call predecessors, (29), 8 states have call successors, (29) Word has length 107 [2021-12-28 03:16:53,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:16:53,321 INFO L225 Difference]: With dead ends: 520 [2021-12-28 03:16:53,321 INFO L226 Difference]: Without dead ends: 372 [2021-12-28 03:16:53,322 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 175 SyntacticMatches, 16 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 533 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=297, Invalid=1770, Unknown=3, NotChecked=0, Total=2070 [2021-12-28 03:16:53,323 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 206 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 1642 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 2278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 1642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 478 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-28 03:16:53,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [253 Valid, 708 Invalid, 2278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 1642 Invalid, 0 Unknown, 478 Unchecked, 1.4s Time] [2021-12-28 03:16:53,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2021-12-28 03:16:53,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 313. [2021-12-28 03:16:53,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 189 states have (on average 1.1904761904761905) internal successors, (225), 195 states have internal predecessors, (225), 96 states have call successors, (96), 24 states have call predecessors, (96), 27 states have return successors, (151), 93 states have call predecessors, (151), 95 states have call successors, (151) [2021-12-28 03:16:53,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 472 transitions. [2021-12-28 03:16:53,354 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 472 transitions. Word has length 107 [2021-12-28 03:16:53,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:16:53,354 INFO L470 AbstractCegarLoop]: Abstraction has 313 states and 472 transitions. [2021-12-28 03:16:53,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 4.777777777777778) internal successors, (86), 16 states have internal predecessors, (86), 8 states have call successors, (32), 7 states have call predecessors, (32), 5 states have return successors, (29), 7 states have call predecessors, (29), 8 states have call successors, (29) [2021-12-28 03:16:53,355 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 472 transitions. [2021-12-28 03:16:53,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-28 03:16:53,356 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:16:53,356 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:16:53,387 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-28 03:16:53,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:16:53,572 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:16:53,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:16:53,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1355654111, now seen corresponding path program 1 times [2021-12-28 03:16:53,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:16:53,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102492201] [2021-12-28 03:16:53,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:16:53,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:16:53,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:53,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:16:53,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:53,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:16:53,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:53,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:16:53,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:53,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:16:53,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:53,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 03:16:53,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:53,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 03:16:53,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:53,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 03:16:53,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:53,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-28 03:16:53,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:53,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-28 03:16:53,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:53,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-28 03:16:53,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:53,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-28 03:16:53,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:53,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-28 03:16:53,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:53,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-28 03:16:53,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:53,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-28 03:16:53,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:53,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-28 03:16:53,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:53,992 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2021-12-28 03:16:53,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:16:53,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102492201] [2021-12-28 03:16:53,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102492201] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:16:53,993 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:16:53,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-28 03:16:53,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332569978] [2021-12-28 03:16:53,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:16:53,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-28 03:16:53,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:16:53,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-28 03:16:53,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2021-12-28 03:16:53,995 INFO L87 Difference]: Start difference. First operand 313 states and 472 transitions. Second operand has 12 states, 11 states have (on average 4.181818181818182) internal successors, (46), 8 states have internal predecessors, (46), 2 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2021-12-28 03:16:54,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:16:54,835 INFO L93 Difference]: Finished difference Result 336 states and 519 transitions. [2021-12-28 03:16:54,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-28 03:16:54,836 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.181818181818182) internal successors, (46), 8 states have internal predecessors, (46), 2 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 109 [2021-12-28 03:16:54,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:16:54,839 INFO L225 Difference]: With dead ends: 336 [2021-12-28 03:16:54,839 INFO L226 Difference]: Without dead ends: 334 [2021-12-28 03:16:54,839 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2021-12-28 03:16:54,841 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 87 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 1061 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 1117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1061 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-28 03:16:54,842 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 640 Invalid, 1117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1061 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-28 03:16:54,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2021-12-28 03:16:54,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 325. [2021-12-28 03:16:54,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 199 states have (on average 1.1809045226130652) internal successors, (235), 207 states have internal predecessors, (235), 96 states have call successors, (96), 24 states have call predecessors, (96), 29 states have return successors, (176), 93 states have call predecessors, (176), 95 states have call successors, (176) [2021-12-28 03:16:54,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 507 transitions. [2021-12-28 03:16:54,897 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 507 transitions. Word has length 109 [2021-12-28 03:16:54,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:16:54,897 INFO L470 AbstractCegarLoop]: Abstraction has 325 states and 507 transitions. [2021-12-28 03:16:54,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.181818181818182) internal successors, (46), 8 states have internal predecessors, (46), 2 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2021-12-28 03:16:54,897 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 507 transitions. [2021-12-28 03:16:54,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-28 03:16:54,899 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:16:54,899 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:16:54,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-28 03:16:54,900 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:16:54,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:16:54,900 INFO L85 PathProgramCache]: Analyzing trace with hash 2056718689, now seen corresponding path program 1 times [2021-12-28 03:16:54,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:16:54,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636827443] [2021-12-28 03:16:54,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:16:54,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:16:54,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:55,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:16:55,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:55,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:16:55,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:55,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:16:55,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:55,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:16:55,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:55,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 03:16:55,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:55,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 03:16:55,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:55,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 03:16:55,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:55,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-28 03:16:55,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:55,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-28 03:16:55,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:55,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-28 03:16:55,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:55,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-28 03:16:55,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:55,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-28 03:16:55,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:55,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-28 03:16:55,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:55,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-28 03:16:55,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:55,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-28 03:16:55,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:55,295 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2021-12-28 03:16:55,295 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:16:55,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636827443] [2021-12-28 03:16:55,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636827443] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:16:55,295 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:16:55,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-12-28 03:16:55,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451996997] [2021-12-28 03:16:55,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:16:55,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-28 03:16:55,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:16:55,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-28 03:16:55,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-12-28 03:16:55,298 INFO L87 Difference]: Start difference. First operand 325 states and 507 transitions. Second operand has 15 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 11 states have internal predecessors, (46), 2 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2021-12-28 03:16:56,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:16:56,475 INFO L93 Difference]: Finished difference Result 336 states and 519 transitions. [2021-12-28 03:16:56,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-28 03:16:56,475 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 11 states have internal predecessors, (46), 2 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 109 [2021-12-28 03:16:56,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:16:56,478 INFO L225 Difference]: With dead ends: 336 [2021-12-28 03:16:56,478 INFO L226 Difference]: Without dead ends: 334 [2021-12-28 03:16:56,482 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=143, Invalid=613, Unknown=0, NotChecked=0, Total=756 [2021-12-28 03:16:56,483 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 165 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 1402 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 1528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-28 03:16:56,483 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [186 Valid, 724 Invalid, 1528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 1402 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-28 03:16:56,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2021-12-28 03:16:56,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 313. [2021-12-28 03:16:56,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 189 states have (on average 1.1904761904761905) internal successors, (225), 195 states have internal predecessors, (225), 96 states have call successors, (96), 24 states have call predecessors, (96), 27 states have return successors, (151), 93 states have call predecessors, (151), 95 states have call successors, (151) [2021-12-28 03:16:56,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 472 transitions. [2021-12-28 03:16:56,517 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 472 transitions. Word has length 109 [2021-12-28 03:16:56,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:16:56,519 INFO L470 AbstractCegarLoop]: Abstraction has 313 states and 472 transitions. [2021-12-28 03:16:56,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 11 states have internal predecessors, (46), 2 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2021-12-28 03:16:56,520 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 472 transitions. [2021-12-28 03:16:56,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-12-28 03:16:56,527 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:16:56,527 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:16:56,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-28 03:16:56,527 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:16:56,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:16:56,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1856298464, now seen corresponding path program 1 times [2021-12-28 03:16:56,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:16:56,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985737874] [2021-12-28 03:16:56,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:16:56,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:16:56,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:56,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:16:56,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:56,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:16:56,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:56,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:16:56,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:56,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:16:56,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:56,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 03:16:56,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:57,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 03:16:57,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:57,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 03:16:57,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:57,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-28 03:16:57,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:57,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-28 03:16:57,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:57,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:16:57,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:57,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-28 03:16:57,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:57,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-28 03:16:57,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:57,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-28 03:16:57,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:57,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-28 03:16:57,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:57,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-28 03:16:57,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:57,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-28 03:16:57,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:57,362 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 5 proven. 30 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-12-28 03:16:57,362 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:16:57,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985737874] [2021-12-28 03:16:57,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985737874] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:16:57,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045579376] [2021-12-28 03:16:57,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:16:57,363 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:16:57,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:16:57,368 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) [2021-12-28 03:16:57,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-28 03:16:57,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:57,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 2744 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-28 03:16:57,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:16:58,131 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-12-28 03:16:58,131 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:16:58,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1045579376] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:16:58,132 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:16:58,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [21] total 23 [2021-12-28 03:16:58,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126343344] [2021-12-28 03:16:58,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:16:58,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 03:16:58,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:16:58,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 03:16:58,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2021-12-28 03:16:58,133 INFO L87 Difference]: Start difference. First operand 313 states and 472 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-28 03:16:58,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:16:58,351 INFO L93 Difference]: Finished difference Result 557 states and 880 transitions. [2021-12-28 03:16:58,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 03:16:58,352 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 120 [2021-12-28 03:16:58,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:16:58,354 INFO L225 Difference]: With dead ends: 557 [2021-12-28 03:16:58,354 INFO L226 Difference]: Without dead ends: 313 [2021-12-28 03:16:58,356 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 148 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=76, Invalid=524, Unknown=0, NotChecked=0, Total=600 [2021-12-28 03:16:58,357 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 15 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 621 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 34 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:16:58,357 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 621 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 63 Invalid, 0 Unknown, 34 Unchecked, 0.1s Time] [2021-12-28 03:16:58,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2021-12-28 03:16:58,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2021-12-28 03:16:58,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 189 states have (on average 1.17989417989418) internal successors, (223), 195 states have internal predecessors, (223), 96 states have call successors, (96), 24 states have call predecessors, (96), 27 states have return successors, (151), 93 states have call predecessors, (151), 95 states have call successors, (151) [2021-12-28 03:16:58,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 470 transitions. [2021-12-28 03:16:58,384 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 470 transitions. Word has length 120 [2021-12-28 03:16:58,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:16:58,384 INFO L470 AbstractCegarLoop]: Abstraction has 313 states and 470 transitions. [2021-12-28 03:16:58,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-28 03:16:58,385 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 470 transitions. [2021-12-28 03:16:58,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-12-28 03:16:58,386 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:16:58,387 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:16:58,419 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-28 03:16:58,599 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,SelfDestructingSolverStorable11 [2021-12-28 03:16:58,599 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:16:58,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:16:58,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1375218206, now seen corresponding path program 1 times [2021-12-28 03:16:58,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:16:58,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89709963] [2021-12-28 03:16:58,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:16:58,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:16:58,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:58,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:16:58,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:58,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:16:58,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:58,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:16:58,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:58,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:16:58,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:58,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 03:16:58,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:58,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 03:16:58,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:58,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 03:16:58,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:59,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-28 03:16:59,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:59,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-28 03:16:59,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:59,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:16:59,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:59,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-28 03:16:59,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:59,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-28 03:16:59,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:59,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-28 03:16:59,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:59,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-28 03:16:59,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:59,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-28 03:16:59,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:59,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-28 03:16:59,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:59,155 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2021-12-28 03:16:59,156 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:16:59,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89709963] [2021-12-28 03:16:59,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89709963] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:16:59,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114316242] [2021-12-28 03:16:59,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:16:59,156 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:16:59,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:16:59,158 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) [2021-12-28 03:16:59,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-28 03:16:59,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:59,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 2749 conjuncts, 31 conjunts are in the unsatisfiable core [2021-12-28 03:16:59,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:16:59,954 INFO L353 Elim1Store]: treesize reduction 70, result has 26.3 percent of original size [2021-12-28 03:16:59,954 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 45 [2021-12-28 03:17:00,054 INFO L353 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-12-28 03:17:00,055 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 24 [2021-12-28 03:17:00,199 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 64 proven. 8 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-12-28 03:17:00,200 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:17:00,622 INFO L387 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 26 treesize of output 14 [2021-12-28 03:17:00,678 INFO L353 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2021-12-28 03:17:00,678 INFO L387 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 30 treesize of output 25 [2021-12-28 03:17:00,723 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-12-28 03:17:00,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1114316242] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 03:17:00,723 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 03:17:00,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 11] total 21 [2021-12-28 03:17:00,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191665915] [2021-12-28 03:17:00,724 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 03:17:00,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-28 03:17:00,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:17:00,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-28 03:17:00,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2021-12-28 03:17:00,726 INFO L87 Difference]: Start difference. First operand 313 states and 470 transitions. Second operand has 21 states, 20 states have (on average 4.75) internal successors, (95), 19 states have internal predecessors, (95), 10 states have call successors, (35), 7 states have call predecessors, (35), 7 states have return successors, (31), 8 states have call predecessors, (31), 10 states have call successors, (31) [2021-12-28 03:17:01,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:17:01,905 INFO L93 Difference]: Finished difference Result 498 states and 772 transitions. [2021-12-28 03:17:01,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-28 03:17:01,906 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 4.75) internal successors, (95), 19 states have internal predecessors, (95), 10 states have call successors, (35), 7 states have call predecessors, (35), 7 states have return successors, (31), 8 states have call predecessors, (31), 10 states have call successors, (31) Word has length 120 [2021-12-28 03:17:01,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:17:01,910 INFO L225 Difference]: With dead ends: 498 [2021-12-28 03:17:01,910 INFO L226 Difference]: Without dead ends: 330 [2021-12-28 03:17:01,912 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 253 SyntacticMatches, 10 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=127, Invalid=684, Unknown=1, NotChecked=0, Total=812 [2021-12-28 03:17:01,912 INFO L933 BasicCegarLoop]: 136 mSDtfsCounter, 174 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 1154 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 675 SdHoareTripleChecker+Invalid, 1685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 1154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 392 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-28 03:17:01,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [215 Valid, 675 Invalid, 1685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 1154 Invalid, 0 Unknown, 392 Unchecked, 0.9s Time] [2021-12-28 03:17:01,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2021-12-28 03:17:01,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 313. [2021-12-28 03:17:01,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 189 states have (on average 1.17989417989418) internal successors, (223), 195 states have internal predecessors, (223), 96 states have call successors, (96), 24 states have call predecessors, (96), 27 states have return successors, (150), 93 states have call predecessors, (150), 95 states have call successors, (150) [2021-12-28 03:17:01,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 469 transitions. [2021-12-28 03:17:01,940 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 469 transitions. Word has length 120 [2021-12-28 03:17:01,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:17:01,941 INFO L470 AbstractCegarLoop]: Abstraction has 313 states and 469 transitions. [2021-12-28 03:17:01,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 4.75) internal successors, (95), 19 states have internal predecessors, (95), 10 states have call successors, (35), 7 states have call predecessors, (35), 7 states have return successors, (31), 8 states have call predecessors, (31), 10 states have call successors, (31) [2021-12-28 03:17:01,941 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 469 transitions. [2021-12-28 03:17:01,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-12-28 03:17:01,943 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:17:01,943 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:17:01,966 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-28 03:17:02,155 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,SelfDestructingSolverStorable12 [2021-12-28 03:17:02,156 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:17:02,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:17:02,156 INFO L85 PathProgramCache]: Analyzing trace with hash 622395683, now seen corresponding path program 1 times [2021-12-28 03:17:02,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:17:02,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494230871] [2021-12-28 03:17:02,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:17:02,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:17:02,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:02,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:17:02,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:02,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:17:02,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:02,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:17:02,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:02,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:17:02,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:02,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 03:17:02,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:02,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 03:17:02,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:02,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 03:17:02,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:02,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-28 03:17:02,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:02,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-28 03:17:02,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:02,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-28 03:17:02,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:02,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-28 03:17:02,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:02,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-28 03:17:02,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:02,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-28 03:17:02,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:02,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-28 03:17:02,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:02,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-28 03:17:02,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:02,541 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 3 proven. 23 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-12-28 03:17:02,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:17:02,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494230871] [2021-12-28 03:17:02,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494230871] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:17:02,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862906787] [2021-12-28 03:17:02,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:17:02,542 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:17:02,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:17:02,543 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) [2021-12-28 03:17:02,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-28 03:17:03,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:03,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 2716 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-28 03:17:03,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:17:03,213 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-12-28 03:17:03,213 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:17:03,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1862906787] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:17:03,214 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:17:03,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 12 [2021-12-28 03:17:03,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127283088] [2021-12-28 03:17:03,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:17:03,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-28 03:17:03,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:17:03,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-28 03:17:03,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-12-28 03:17:03,215 INFO L87 Difference]: Start difference. First operand 313 states and 469 transitions. Second operand has 9 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-28 03:17:03,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:17:03,362 INFO L93 Difference]: Finished difference Result 551 states and 842 transitions. [2021-12-28 03:17:03,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-28 03:17:03,363 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 117 [2021-12-28 03:17:03,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:17:03,366 INFO L225 Difference]: With dead ends: 551 [2021-12-28 03:17:03,366 INFO L226 Difference]: Without dead ends: 313 [2021-12-28 03:17:03,368 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 143 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2021-12-28 03:17:03,369 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 11 mSDsluCounter, 1144 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1314 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:17:03,369 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 1314 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 03:17:03,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2021-12-28 03:17:03,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2021-12-28 03:17:03,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 189 states have (on average 1.17989417989418) internal successors, (223), 195 states have internal predecessors, (223), 96 states have call successors, (96), 24 states have call predecessors, (96), 27 states have return successors, (149), 93 states have call predecessors, (149), 95 states have call successors, (149) [2021-12-28 03:17:03,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 468 transitions. [2021-12-28 03:17:03,397 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 468 transitions. Word has length 117 [2021-12-28 03:17:03,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:17:03,397 INFO L470 AbstractCegarLoop]: Abstraction has 313 states and 468 transitions. [2021-12-28 03:17:03,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-28 03:17:03,398 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 468 transitions. [2021-12-28 03:17:03,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-12-28 03:17:03,399 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:17:03,400 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:17:03,433 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-28 03:17:03,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-28 03:17:03,618 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:17:03,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:17:03,619 INFO L85 PathProgramCache]: Analyzing trace with hash -440949530, now seen corresponding path program 2 times [2021-12-28 03:17:03,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:17:03,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616723539] [2021-12-28 03:17:03,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:17:03,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:17:03,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:03,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:17:03,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:03,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:17:03,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:03,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:17:03,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:03,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:17:03,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:03,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 03:17:03,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:03,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 03:17:03,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:03,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 03:17:03,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:03,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-28 03:17:04,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:04,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:17:04,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:04,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-28 03:17:04,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:04,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-28 03:17:04,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:04,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-28 03:17:04,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:04,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-28 03:17:04,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:04,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-28 03:17:04,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:04,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-28 03:17:04,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:04,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-28 03:17:04,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:04,132 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2021-12-28 03:17:04,132 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:17:04,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616723539] [2021-12-28 03:17:04,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616723539] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:17:04,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1964659707] [2021-12-28 03:17:04,133 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-28 03:17:04,133 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:17:04,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:17:04,134 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) [2021-12-28 03:17:04,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-28 03:17:04,841 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-28 03:17:04,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 03:17:04,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 2749 conjuncts, 28 conjunts are in the unsatisfiable core [2021-12-28 03:17:04,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:17:04,862 INFO L387 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 10 treesize of output 8 [2021-12-28 03:17:05,162 INFO L387 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 26 treesize of output 26 [2021-12-28 03:17:05,191 INFO L387 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 15 [2021-12-28 03:17:05,334 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 68 proven. 4 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-12-28 03:17:05,334 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:17:05,503 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1261 (Array Int Int))) (let ((.cse0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_aws_byte_cursor_compare_lookup_harness_~#rhs~0#1.base| v_ArrVal_1261) |c_ULTIMATE.start_aws_byte_cursor_compare_lookup_harness_~#lhs~0#1.base|) |c_ULTIMATE.start_aws_byte_cursor_compare_lookup_harness_~#lhs~0#1.offset|))) (<= .cse0 (* 18446744073709551616 (div .cse0 18446744073709551616))))) is different from false [2021-12-28 03:17:05,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1964659707] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:17:05,509 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-28 03:17:05,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 19 [2021-12-28 03:17:05,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044788304] [2021-12-28 03:17:05,509 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-28 03:17:05,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-28 03:17:05,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:17:05,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-28 03:17:05,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=325, Unknown=1, NotChecked=36, Total=420 [2021-12-28 03:17:05,511 INFO L87 Difference]: Start difference. First operand 313 states and 468 transitions. Second operand has 19 states, 18 states have (on average 5.055555555555555) internal successors, (91), 17 states have internal predecessors, (91), 9 states have call successors, (33), 5 states have call predecessors, (33), 5 states have return successors, (30), 7 states have call predecessors, (30), 9 states have call successors, (30) [2021-12-28 03:17:06,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:17:06,621 INFO L93 Difference]: Finished difference Result 523 states and 805 transitions. [2021-12-28 03:17:06,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-28 03:17:06,622 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 5.055555555555555) internal successors, (91), 17 states have internal predecessors, (91), 9 states have call successors, (33), 5 states have call predecessors, (33), 5 states have return successors, (30), 7 states have call predecessors, (30), 9 states have call successors, (30) Word has length 120 [2021-12-28 03:17:06,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:17:06,624 INFO L225 Difference]: With dead ends: 523 [2021-12-28 03:17:06,624 INFO L226 Difference]: Without dead ends: 341 [2021-12-28 03:17:06,625 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 219 SyntacticMatches, 11 SemanticMatches, 28 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=128, Invalid=686, Unknown=2, NotChecked=54, Total=870 [2021-12-28 03:17:06,626 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 286 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 1096 mSolverCounterSat, 234 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 1534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 234 IncrementalHoareTripleChecker+Valid, 1096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 204 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-28 03:17:06,626 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [335 Valid, 480 Invalid, 1534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [234 Valid, 1096 Invalid, 0 Unknown, 204 Unchecked, 0.8s Time] [2021-12-28 03:17:06,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2021-12-28 03:17:06,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 322. [2021-12-28 03:17:06,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 194 states have (on average 1.1804123711340206) internal successors, (229), 200 states have internal predecessors, (229), 100 states have call successors, (100), 24 states have call predecessors, (100), 27 states have return successors, (152), 97 states have call predecessors, (152), 99 states have call successors, (152) [2021-12-28 03:17:06,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 481 transitions. [2021-12-28 03:17:06,664 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 481 transitions. Word has length 120 [2021-12-28 03:17:06,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:17:06,665 INFO L470 AbstractCegarLoop]: Abstraction has 322 states and 481 transitions. [2021-12-28 03:17:06,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 5.055555555555555) internal successors, (91), 17 states have internal predecessors, (91), 9 states have call successors, (33), 5 states have call predecessors, (33), 5 states have return successors, (30), 7 states have call predecessors, (30), 9 states have call successors, (30) [2021-12-28 03:17:06,665 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 481 transitions. [2021-12-28 03:17:06,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-12-28 03:17:06,667 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:17:06,667 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:17:06,700 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-28 03:17:06,881 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,SelfDestructingSolverStorable14 [2021-12-28 03:17:06,881 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:17:06,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:17:06,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1718564348, now seen corresponding path program 2 times [2021-12-28 03:17:06,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:17:06,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751733882] [2021-12-28 03:17:06,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:17:06,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:17:07,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:07,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:17:07,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:07,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:17:07,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:07,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:17:07,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:07,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:17:07,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:07,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 03:17:07,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:07,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 03:17:07,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:07,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-28 03:17:07,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:07,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-28 03:17:07,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:07,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-28 03:17:07,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:07,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-28 03:17:07,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:07,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-28 03:17:07,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:07,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-28 03:17:07,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:07,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-28 03:17:07,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:07,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-28 03:17:07,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:07,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-28 03:17:07,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:07,469 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 6 proven. 33 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-12-28 03:17:07,470 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:17:07,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751733882] [2021-12-28 03:17:07,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751733882] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:17:07,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938974110] [2021-12-28 03:17:07,471 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-28 03:17:07,472 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:17:07,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:17:07,473 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) [2021-12-28 03:17:07,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process