./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be16_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be16_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 f6da3aa04741dedcde0205dc04a8136a445ebd58b30adbc60377ecda455d64bb --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 22:44:03,741 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 22:44:03,765 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 22:44:03,788 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 22:44:03,788 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 22:44:03,789 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 22:44:03,790 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 22:44:03,791 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 22:44:03,792 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 22:44:03,793 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 22:44:03,793 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 22:44:03,794 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 22:44:03,794 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 22:44:03,795 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 22:44:03,796 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 22:44:03,796 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 22:44:03,797 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 22:44:03,798 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 22:44:03,799 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 22:44:03,800 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 22:44:03,801 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 22:44:03,814 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 22:44:03,815 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 22:44:03,816 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 22:44:03,816 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 22:44:03,818 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 22:44:03,819 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 22:44:03,819 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 22:44:03,820 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 22:44:03,821 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 22:44:03,821 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 22:44:03,822 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 22:44:03,823 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 22:44:03,823 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 22:44:03,824 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 22:44:03,825 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 22:44:03,825 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 22:44:03,826 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 22:44:03,826 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 22:44:03,826 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 22:44:03,827 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 22:44:03,827 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 22:44:03,829 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-13 22:44:03,843 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 22:44:03,844 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 22:44:03,844 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 22:44:03,844 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 22:44:03,844 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 22:44:03,845 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 22:44:03,845 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 22:44:03,845 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 22:44:03,845 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 22:44:03,846 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 22:44:03,846 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 22:44:03,846 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 22:44:03,846 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 22:44:03,846 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 22:44:03,846 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 22:44:03,846 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 22:44:03,847 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 22:44:03,847 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 22:44:03,847 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 22:44:03,847 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 22:44:03,847 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 22:44:03,847 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:44:03,848 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 22:44:03,848 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 22:44:03,848 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 22:44:03,848 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 22:44:03,848 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 22:44:03,848 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 22:44:03,848 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 22:44:03,849 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 22:44:03,849 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f6da3aa04741dedcde0205dc04a8136a445ebd58b30adbc60377ecda455d64bb [2022-07-13 22:44:04,003 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 22:44:04,019 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 22:44:04,020 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 22:44:04,021 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 22:44:04,022 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 22:44:04,023 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be16_harness.i [2022-07-13 22:44:04,080 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c8c2c904/111f318f374c4aa78ea21beb15a8e2cb/FLAGd21467fec [2022-07-13 22:44:04,666 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 22:44:04,666 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be16_harness.i [2022-07-13 22:44:04,694 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c8c2c904/111f318f374c4aa78ea21beb15a8e2cb/FLAGd21467fec [2022-07-13 22:44:05,107 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c8c2c904/111f318f374c4aa78ea21beb15a8e2cb [2022-07-13 22:44:05,109 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 22:44:05,110 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 22:44:05,111 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 22:44:05,112 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 22:44:05,114 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 22:44:05,114 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:44:05" (1/1) ... [2022-07-13 22:44:05,115 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f932675 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:44:05, skipping insertion in model container [2022-07-13 22:44:05,115 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:44:05" (1/1) ... [2022-07-13 22:44:05,120 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 22:44:05,198 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 22:44:05,436 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be16_harness.i[4499,4512] [2022-07-13 22:44:05,443 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be16_harness.i[4559,4572] [2022-07-13 22:44:06,189 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:44:06,193 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:44:06,195 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:44:06,198 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:44:06,199 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:44:06,211 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:44:06,213 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:44:06,215 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:44:06,215 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:44:06,471 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-13 22:44:06,473 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-13 22:44:06,475 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-13 22:44:06,476 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-13 22:44:06,480 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-13 22:44:06,483 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-13 22:44:06,483 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-13 22:44:06,484 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-13 22:44:06,485 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-13 22:44:06,489 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-13 22:44:06,605 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-13 22:44:06,682 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:44:06,683 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:44:06,720 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:44:06,764 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 22:44:06,784 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be16_harness.i[4499,4512] [2022-07-13 22:44:06,786 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be16_harness.i[4559,4572] [2022-07-13 22:44:06,831 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:44:06,832 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:44:06,833 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:44:06,833 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:44:06,834 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:44:06,846 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:44:06,847 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:44:06,848 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:44:06,848 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:44:06,882 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-13 22:44:06,883 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-13 22:44:06,883 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-13 22:44:06,884 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-13 22:44:06,885 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-13 22:44:06,885 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-13 22:44:06,886 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-13 22:44:06,886 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-13 22:44:06,886 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-13 22:44:06,887 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-13 22:44:06,909 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-13 22:44:06,950 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:44:06,951 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:44:07,014 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:44:07,148 INFO L208 MainTranslator]: Completed translation [2022-07-13 22:44:07,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:44:07 WrapperNode [2022-07-13 22:44:07,149 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 22:44:07,150 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 22:44:07,150 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 22:44:07,150 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 22:44:07,155 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:44:07" (1/1) ... [2022-07-13 22:44:07,219 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:44:07" (1/1) ... [2022-07-13 22:44:07,281 INFO L137 Inliner]: procedures = 691, calls = 2645, calls flagged for inlining = 61, calls inlined = 11, statements flattened = 986 [2022-07-13 22:44:07,282 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 22:44:07,282 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 22:44:07,283 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 22:44:07,283 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 22:44:07,289 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:44:07" (1/1) ... [2022-07-13 22:44:07,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:44:07" (1/1) ... [2022-07-13 22:44:07,296 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:44:07" (1/1) ... [2022-07-13 22:44:07,297 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:44:07" (1/1) ... [2022-07-13 22:44:07,322 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:44:07" (1/1) ... [2022-07-13 22:44:07,326 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:44:07" (1/1) ... [2022-07-13 22:44:07,332 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:44:07" (1/1) ... [2022-07-13 22:44:07,341 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 22:44:07,342 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 22:44:07,342 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 22:44:07,342 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 22:44:07,343 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:44:07" (1/1) ... [2022-07-13 22:44:07,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:44:07,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:44:07,391 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) [2022-07-13 22:44:07,422 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 [2022-07-13 22:44:07,434 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_read [2022-07-13 22:44:07,434 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_read [2022-07-13 22:44:07,435 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2022-07-13 22:44:07,435 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2022-07-13 22:44:07,435 INFO L130 BoogieDeclarations]: Found specification of procedure ntohs [2022-07-13 22:44:07,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 22:44:07,435 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-07-13 22:44:07,436 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-07-13 22:44:07,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2022-07-13 22:44:07,437 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-07-13 22:44:07,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-07-13 22:44:07,437 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 22:44:07,437 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-13 22:44:07,438 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-13 22:44:07,438 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-13 22:44:07,438 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-13 22:44:07,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-13 22:44:07,438 INFO L130 BoogieDeclarations]: Found specification of procedure aws_ntoh16 [2022-07-13 22:44:07,439 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_ntoh16 [2022-07-13 22:44:07,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 22:44:07,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-13 22:44:07,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 22:44:07,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 22:44:07,439 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-13 22:44:07,439 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-13 22:44:07,440 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-07-13 22:44:07,440 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-07-13 22:44:07,440 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-13 22:44:07,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-13 22:44:07,441 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-07-13 22:44:07,441 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-07-13 22:44:07,441 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-13 22:44:07,441 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-13 22:44:07,441 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 22:44:07,442 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-13 22:44:07,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-13 22:44:07,442 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-07-13 22:44:07,442 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-07-13 22:44:07,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 22:44:07,442 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real [2022-07-13 22:44:07,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 22:44:07,745 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 22:44:07,747 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 22:44:08,552 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 22:44:08,559 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 22:44:08,560 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-13 22:44:08,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:44:08 BoogieIcfgContainer [2022-07-13 22:44:08,562 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 22:44:08,563 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 22:44:08,564 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 22:44:08,566 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 22:44:08,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 10:44:05" (1/3) ... [2022-07-13 22:44:08,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33a7b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:44:08, skipping insertion in model container [2022-07-13 22:44:08,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:44:07" (2/3) ... [2022-07-13 22:44:08,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33a7b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:44:08, skipping insertion in model container [2022-07-13 22:44:08,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:44:08" (3/3) ... [2022-07-13 22:44:08,568 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_read_be16_harness.i [2022-07-13 22:44:08,578 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 22:44:08,579 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 22:44:08,627 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 22:44:08,635 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@67cec9ab, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6f187dba [2022-07-13 22:44:08,636 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 22:44:08,640 INFO L276 IsEmpty]: Start isEmpty. Operand has 163 states, 102 states have (on average 1.2549019607843137) internal successors, (128), 103 states have internal predecessors, (128), 48 states have call successors, (48), 11 states have call predecessors, (48), 11 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2022-07-13 22:44:08,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-13 22:44:08,654 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:44:08,654 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:44:08,655 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:44:08,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:44:08,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1794068414, now seen corresponding path program 1 times [2022-07-13 22:44:08,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:44:08,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050463096] [2022-07-13 22:44:08,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:44:08,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:44:08,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:09,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:44:09,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:09,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:44:09,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:09,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 22:44:09,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:09,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 22:44:09,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:09,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-13 22:44:09,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:09,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 22:44:09,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:09,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-13 22:44:09,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:09,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 22:44:09,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:09,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 22:44:09,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:09,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-13 22:44:09,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:09,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-13 22:44:09,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:09,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-13 22:44:09,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:09,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-13 22:44:09,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:09,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-13 22:44:09,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:09,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-13 22:44:09,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:09,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-13 22:44:09,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:09,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-13 22:44:09,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:09,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-13 22:44:09,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:09,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-13 22:44:09,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:09,360 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2022-07-13 22:44:09,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:44:09,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050463096] [2022-07-13 22:44:09,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050463096] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:44:09,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:44:09,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 22:44:09,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814150715] [2022-07-13 22:44:09,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:44:09,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 22:44:09,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:44:09,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 22:44:09,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 22:44:09,394 INFO L87 Difference]: Start difference. First operand has 163 states, 102 states have (on average 1.2549019607843137) internal successors, (128), 103 states have internal predecessors, (128), 48 states have call successors, (48), 11 states have call predecessors, (48), 11 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-13 22:44:09,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:44:09,908 INFO L93 Difference]: Finished difference Result 326 states and 478 transitions. [2022-07-13 22:44:09,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 22:44:09,910 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 124 [2022-07-13 22:44:09,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:44:09,918 INFO L225 Difference]: With dead ends: 326 [2022-07-13 22:44:09,919 INFO L226 Difference]: Without dead ends: 164 [2022-07-13 22:44:09,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 22:44:09,931 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 117 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 22:44:09,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 290 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 22:44:09,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-07-13 22:44:09,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 157. [2022-07-13 22:44:09,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 97 states have (on average 1.2371134020618557) internal successors, (120), 98 states have internal predecessors, (120), 48 states have call successors, (48), 11 states have call predecessors, (48), 11 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2022-07-13 22:44:09,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 215 transitions. [2022-07-13 22:44:09,983 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 215 transitions. Word has length 124 [2022-07-13 22:44:09,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:44:09,984 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 215 transitions. [2022-07-13 22:44:09,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-13 22:44:09,984 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 215 transitions. [2022-07-13 22:44:09,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-13 22:44:09,986 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:44:09,987 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:44:09,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 22:44:09,988 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:44:09,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:44:09,989 INFO L85 PathProgramCache]: Analyzing trace with hash -2001372740, now seen corresponding path program 1 times [2022-07-13 22:44:09,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:44:09,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061129714] [2022-07-13 22:44:09,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:44:09,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:44:10,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:10,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:44:10,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:10,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:44:10,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:10,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 22:44:10,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:10,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 22:44:10,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:10,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-13 22:44:10,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:10,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 22:44:10,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:10,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-13 22:44:10,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:10,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 22:44:10,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:10,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 22:44:10,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:10,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-13 22:44:10,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:10,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-13 22:44:10,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:10,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-13 22:44:10,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:10,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-13 22:44:10,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:10,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-13 22:44:10,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:10,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-13 22:44:10,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:10,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-13 22:44:10,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:10,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-13 22:44:10,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:10,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-13 22:44:10,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:10,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-13 22:44:10,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:10,349 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2022-07-13 22:44:10,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:44:10,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061129714] [2022-07-13 22:44:10,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061129714] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:44:10,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074068469] [2022-07-13 22:44:10,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:44:10,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:44:10,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:44:10,354 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) [2022-07-13 22:44:10,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 22:44:10,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:10,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 2747 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 22:44:10,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:44:10,867 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2022-07-13 22:44:10,867 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:44:10,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074068469] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:44:10,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:44:10,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2022-07-13 22:44:10,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792037581] [2022-07-13 22:44:10,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:44:10,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 22:44:10,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:44:10,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 22:44:10,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-07-13 22:44:10,870 INFO L87 Difference]: Start difference. First operand 157 states and 215 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-13 22:44:11,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:44:11,056 INFO L93 Difference]: Finished difference Result 290 states and 409 transitions. [2022-07-13 22:44:11,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 22:44:11,056 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 124 [2022-07-13 22:44:11,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:44:11,058 INFO L225 Difference]: With dead ends: 290 [2022-07-13 22:44:11,058 INFO L226 Difference]: Without dead ends: 160 [2022-07-13 22:44:11,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:44:11,059 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 238 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 22:44:11,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 450 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 22:44:11,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2022-07-13 22:44:11,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2022-07-13 22:44:11,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 99 states have (on average 1.2323232323232323) internal successors, (122), 101 states have internal predecessors, (122), 48 states have call successors, (48), 11 states have call predecessors, (48), 12 states have return successors, (55), 47 states have call predecessors, (55), 47 states have call successors, (55) [2022-07-13 22:44:11,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 225 transitions. [2022-07-13 22:44:11,071 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 225 transitions. Word has length 124 [2022-07-13 22:44:11,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:44:11,072 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 225 transitions. [2022-07-13 22:44:11,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-13 22:44:11,072 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 225 transitions. [2022-07-13 22:44:11,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-07-13 22:44:11,073 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:44:11,073 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:44:11,096 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 22:44:11,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:44:11,290 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:44:11,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:44:11,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1628990305, now seen corresponding path program 1 times [2022-07-13 22:44:11,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:44:11,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376779440] [2022-07-13 22:44:11,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:44:11,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:44:11,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:11,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:44:11,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:11,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:44:11,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:11,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 22:44:11,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:11,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 22:44:11,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:11,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-13 22:44:11,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:11,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 22:44:11,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:11,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 22:44:11,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:11,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:44:11,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:11,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 22:44:11,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:11,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 22:44:11,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:11,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 22:44:11,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:11,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-13 22:44:11,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:11,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 22:44:11,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:11,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-13 22:44:11,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:11,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 22:44:11,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:11,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-13 22:44:11,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:11,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-13 22:44:11,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:11,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-13 22:44:11,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:11,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-13 22:44:11,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:11,556 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2022-07-13 22:44:11,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:44:11,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376779440] [2022-07-13 22:44:11,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376779440] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:44:11,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851243332] [2022-07-13 22:44:11,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:44:11,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:44:11,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:44:11,558 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) [2022-07-13 22:44:11,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 22:44:11,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:11,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 2752 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-13 22:44:11,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:44:12,059 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2022-07-13 22:44:12,059 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:44:12,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851243332] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:44:12,060 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:44:12,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2022-07-13 22:44:12,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262727176] [2022-07-13 22:44:12,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:44:12,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 22:44:12,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:44:12,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 22:44:12,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-07-13 22:44:12,061 INFO L87 Difference]: Start difference. First operand 160 states and 225 transitions. Second operand has 7 states, 6 states have (on average 9.166666666666666) internal successors, (55), 7 states have internal predecessors, (55), 4 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2022-07-13 22:44:12,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:44:12,260 INFO L93 Difference]: Finished difference Result 276 states and 390 transitions. [2022-07-13 22:44:12,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 22:44:12,260 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.166666666666666) internal successors, (55), 7 states have internal predecessors, (55), 4 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) Word has length 126 [2022-07-13 22:44:12,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:44:12,262 INFO L225 Difference]: With dead ends: 276 [2022-07-13 22:44:12,262 INFO L226 Difference]: Without dead ends: 160 [2022-07-13 22:44:12,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2022-07-13 22:44:12,263 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 256 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 587 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 22:44:12,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 587 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 22:44:12,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2022-07-13 22:44:12,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2022-07-13 22:44:12,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 99 states have (on average 1.2323232323232323) internal successors, (122), 101 states have internal predecessors, (122), 48 states have call successors, (48), 11 states have call predecessors, (48), 12 states have return successors, (53), 47 states have call predecessors, (53), 47 states have call successors, (53) [2022-07-13 22:44:12,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 223 transitions. [2022-07-13 22:44:12,273 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 223 transitions. Word has length 126 [2022-07-13 22:44:12,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:44:12,274 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 223 transitions. [2022-07-13 22:44:12,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.166666666666666) internal successors, (55), 7 states have internal predecessors, (55), 4 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2022-07-13 22:44:12,274 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 223 transitions. [2022-07-13 22:44:12,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-07-13 22:44:12,275 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:44:12,275 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:44:12,299 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 22:44:12,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-07-13 22:44:12,487 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:44:12,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:44:12,487 INFO L85 PathProgramCache]: Analyzing trace with hash 75349020, now seen corresponding path program 2 times [2022-07-13 22:44:12,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:44:12,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125707215] [2022-07-13 22:44:12,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:44:12,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:44:12,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:12,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:44:12,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:12,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:44:12,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:12,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 22:44:12,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:12,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 22:44:12,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:12,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-13 22:44:12,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:12,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 22:44:12,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:12,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 22:44:12,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:12,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:44:12,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:12,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 22:44:12,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:12,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 22:44:12,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:12,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 22:44:12,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:12,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 22:44:12,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:12,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-13 22:44:12,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:12,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-13 22:44:12,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:12,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-13 22:44:12,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:12,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-13 22:44:12,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:12,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-13 22:44:12,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:12,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-13 22:44:12,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:12,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-13 22:44:12,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:12,738 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2022-07-13 22:44:12,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:44:12,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125707215] [2022-07-13 22:44:12,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125707215] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:44:12,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308892498] [2022-07-13 22:44:12,739 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 22:44:12,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:44:12,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:44:12,740 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) [2022-07-13 22:44:12,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 22:44:13,324 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 22:44:13,324 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 22:44:13,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 2757 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-13 22:44:13,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:44:13,383 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-07-13 22:44:13,383 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:44:13,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [308892498] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:44:13,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:44:13,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 10 [2022-07-13 22:44:13,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586662320] [2022-07-13 22:44:13,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:44:13,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 22:44:13,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:44:13,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 22:44:13,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:44:13,401 INFO L87 Difference]: Start difference. First operand 160 states and 223 transitions. Second operand has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 5 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 4 states have call predecessors, (19), 5 states have call successors, (19) [2022-07-13 22:44:13,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:44:13,539 INFO L93 Difference]: Finished difference Result 270 states and 377 transitions. [2022-07-13 22:44:13,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 22:44:13,540 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 5 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 4 states have call predecessors, (19), 5 states have call successors, (19) Word has length 128 [2022-07-13 22:44:13,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:44:13,542 INFO L225 Difference]: With dead ends: 270 [2022-07-13 22:44:13,542 INFO L226 Difference]: Without dead ends: 160 [2022-07-13 22:44:13,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-07-13 22:44:13,543 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 121 mSDsluCounter, 951 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 1149 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 22:44:13,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 1149 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 22:44:13,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2022-07-13 22:44:13,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2022-07-13 22:44:13,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 99 states have (on average 1.2323232323232323) internal successors, (122), 101 states have internal predecessors, (122), 48 states have call successors, (48), 11 states have call predecessors, (48), 12 states have return successors, (50), 47 states have call predecessors, (50), 47 states have call successors, (50) [2022-07-13 22:44:13,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 220 transitions. [2022-07-13 22:44:13,554 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 220 transitions. Word has length 128 [2022-07-13 22:44:13,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:44:13,555 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 220 transitions. [2022-07-13 22:44:13,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 5 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 4 states have call predecessors, (19), 5 states have call successors, (19) [2022-07-13 22:44:13,555 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 220 transitions. [2022-07-13 22:44:13,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-13 22:44:13,556 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:44:13,556 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:44:13,579 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-13 22:44:13,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:44:13,780 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:44:13,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:44:13,780 INFO L85 PathProgramCache]: Analyzing trace with hash -973892671, now seen corresponding path program 3 times [2022-07-13 22:44:13,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:44:13,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345641411] [2022-07-13 22:44:13,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:44:13,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:44:13,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:13,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:44:13,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:13,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:44:13,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:13,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 22:44:13,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:13,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 22:44:13,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:13,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-13 22:44:13,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:13,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 22:44:13,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:13,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 22:44:13,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:14,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:44:14,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:14,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 22:44:14,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:14,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 22:44:14,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:14,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 22:44:14,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:14,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 22:44:14,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:14,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-13 22:44:14,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:14,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-13 22:44:14,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:14,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-13 22:44:14,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:14,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-13 22:44:14,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:14,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-13 22:44:14,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:14,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-13 22:44:14,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:14,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-13 22:44:14,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:14,096 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2022-07-13 22:44:14,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:44:14,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345641411] [2022-07-13 22:44:14,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345641411] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:44:14,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586369935] [2022-07-13 22:44:14,097 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-13 22:44:14,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:44:14,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:44:14,098 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) [2022-07-13 22:44:14,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-13 22:44:14,478 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-07-13 22:44:14,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 22:44:14,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 2411 conjuncts, 20 conjunts are in the unsatisfiable core [2022-07-13 22:44:14,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:44:14,545 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-07-13 22:44:14,546 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:44:14,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [586369935] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:44:14,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:44:14,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2022-07-13 22:44:14,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413173599] [2022-07-13 22:44:14,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:44:14,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 22:44:14,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:44:14,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 22:44:14,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2022-07-13 22:44:14,548 INFO L87 Difference]: Start difference. First operand 160 states and 220 transitions. Second operand has 7 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-13 22:44:14,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:44:14,643 INFO L93 Difference]: Finished difference Result 265 states and 363 transitions. [2022-07-13 22:44:14,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 22:44:14,643 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 130 [2022-07-13 22:44:14,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:44:14,645 INFO L225 Difference]: With dead ends: 265 [2022-07-13 22:44:14,645 INFO L226 Difference]: Without dead ends: 160 [2022-07-13 22:44:14,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2022-07-13 22:44:14,646 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 2 mSDsluCounter, 965 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1166 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 22:44:14,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1166 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 22:44:14,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2022-07-13 22:44:14,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2022-07-13 22:44:14,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 99 states have (on average 1.2323232323232323) internal successors, (122), 101 states have internal predecessors, (122), 48 states have call successors, (48), 11 states have call predecessors, (48), 12 states have return successors, (49), 47 states have call predecessors, (49), 47 states have call successors, (49) [2022-07-13 22:44:14,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 219 transitions. [2022-07-13 22:44:14,661 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 219 transitions. Word has length 130 [2022-07-13 22:44:14,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:44:14,661 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 219 transitions. [2022-07-13 22:44:14,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-13 22:44:14,662 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 219 transitions. [2022-07-13 22:44:14,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-07-13 22:44:14,663 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:44:14,663 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:44:14,701 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-13 22:44:14,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:44:14,884 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:44:14,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:44:14,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1433947686, now seen corresponding path program 4 times [2022-07-13 22:44:14,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:44:14,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557546483] [2022-07-13 22:44:14,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:44:14,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:44:14,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:15,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:44:15,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:15,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:44:15,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:15,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 22:44:15,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:15,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 22:44:15,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:15,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-13 22:44:15,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:15,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 22:44:15,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:15,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 22:44:15,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:15,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:44:15,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:15,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 22:44:15,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:15,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 22:44:15,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:15,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 22:44:15,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:15,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 22:44:15,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:15,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-13 22:44:15,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:15,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-13 22:44:15,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:15,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-13 22:44:15,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:15,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-13 22:44:15,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:15,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-13 22:44:15,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:15,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-13 22:44:15,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:15,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-13 22:44:15,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:15,171 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2022-07-13 22:44:15,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:44:15,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557546483] [2022-07-13 22:44:15,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557546483] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:44:15,172 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:44:15,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-13 22:44:15,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041205591] [2022-07-13 22:44:15,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:44:15,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-13 22:44:15,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:44:15,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-13 22:44:15,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-13 22:44:15,173 INFO L87 Difference]: Start difference. First operand 160 states and 219 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 8 states have internal predecessors, (48), 6 states have call successors, (21), 5 states have call predecessors, (21), 2 states have return successors, (19), 6 states have call predecessors, (19), 5 states have call successors, (19) [2022-07-13 22:44:16,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:44:16,255 INFO L93 Difference]: Finished difference Result 261 states and 353 transitions. [2022-07-13 22:44:16,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-13 22:44:16,256 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 8 states have internal predecessors, (48), 6 states have call successors, (21), 5 states have call predecessors, (21), 2 states have return successors, (19), 6 states have call predecessors, (19), 5 states have call successors, (19) Word has length 132 [2022-07-13 22:44:16,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:44:16,257 INFO L225 Difference]: With dead ends: 261 [2022-07-13 22:44:16,257 INFO L226 Difference]: Without dead ends: 167 [2022-07-13 22:44:16,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2022-07-13 22:44:16,258 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 255 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 819 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 1013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 22:44:16,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 662 Invalid, 1013 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 819 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 22:44:16,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2022-07-13 22:44:16,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 160. [2022-07-13 22:44:16,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 99 states have (on average 1.2323232323232323) internal successors, (122), 101 states have internal predecessors, (122), 48 states have call successors, (48), 11 states have call predecessors, (48), 12 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2022-07-13 22:44:16,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 218 transitions. [2022-07-13 22:44:16,267 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 218 transitions. Word has length 132 [2022-07-13 22:44:16,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:44:16,267 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 218 transitions. [2022-07-13 22:44:16,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 8 states have internal predecessors, (48), 6 states have call successors, (21), 5 states have call predecessors, (21), 2 states have return successors, (19), 6 states have call predecessors, (19), 5 states have call successors, (19) [2022-07-13 22:44:16,268 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 218 transitions. [2022-07-13 22:44:16,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-13 22:44:16,269 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:44:16,269 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:44:16,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 22:44:16,269 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:44:16,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:44:16,270 INFO L85 PathProgramCache]: Analyzing trace with hash -325903285, now seen corresponding path program 1 times [2022-07-13 22:44:16,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:44:16,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61823394] [2022-07-13 22:44:16,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:44:16,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:44:16,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:16,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:44:16,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:16,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:44:16,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:16,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 22:44:16,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:16,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 22:44:16,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:16,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-13 22:44:16,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:16,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 22:44:16,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:16,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 22:44:16,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:16,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:44:16,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:16,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 22:44:16,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:16,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 22:44:16,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:16,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 22:44:16,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:16,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 22:44:16,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:16,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-13 22:44:16,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:16,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-13 22:44:16,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:16,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-13 22:44:16,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:16,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-13 22:44:16,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:16,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-13 22:44:16,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:16,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-13 22:44:16,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:16,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-13 22:44:16,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:16,585 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2022-07-13 22:44:16,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:44:16,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61823394] [2022-07-13 22:44:16,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61823394] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:44:16,586 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:44:16,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:44:16,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24888359] [2022-07-13 22:44:16,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:44:16,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:44:16,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:44:16,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:44:16,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:44:16,588 INFO L87 Difference]: Start difference. First operand 160 states and 218 transitions. Second operand has 10 states, 9 states have (on average 5.333333333333333) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2022-07-13 22:44:17,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:44:17,723 INFO L93 Difference]: Finished difference Result 179 states and 249 transitions. [2022-07-13 22:44:17,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 22:44:17,724 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.333333333333333) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) Word has length 134 [2022-07-13 22:44:17,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:44:17,726 INFO L225 Difference]: With dead ends: 179 [2022-07-13 22:44:17,726 INFO L226 Difference]: Without dead ends: 177 [2022-07-13 22:44:17,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2022-07-13 22:44:17,727 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 139 mSDsluCounter, 713 mSDsCounter, 0 mSdLazyCounter, 828 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 903 SdHoareTripleChecker+Invalid, 947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 22:44:17,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 903 Invalid, 947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 828 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 22:44:17,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-07-13 22:44:17,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 169. [2022-07-13 22:44:17,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 105 states have (on average 1.2190476190476192) internal successors, (128), 108 states have internal predecessors, (128), 49 states have call successors, (49), 12 states have call predecessors, (49), 14 states have return successors, (59), 48 states have call predecessors, (59), 48 states have call successors, (59) [2022-07-13 22:44:17,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 236 transitions. [2022-07-13 22:44:17,740 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 236 transitions. Word has length 134 [2022-07-13 22:44:17,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:44:17,741 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 236 transitions. [2022-07-13 22:44:17,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.333333333333333) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2022-07-13 22:44:17,741 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 236 transitions. [2022-07-13 22:44:17,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-07-13 22:44:17,742 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:44:17,743 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 5, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:44:17,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 22:44:17,743 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:44:17,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:44:17,743 INFO L85 PathProgramCache]: Analyzing trace with hash -2099484013, now seen corresponding path program 1 times [2022-07-13 22:44:17,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:44:17,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681286272] [2022-07-13 22:44:17,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:44:17,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:44:17,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:18,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:44:18,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:18,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:44:18,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:18,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 22:44:18,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:18,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 22:44:18,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:18,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-13 22:44:18,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:18,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 22:44:18,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:18,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 22:44:18,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:18,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:44:18,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:18,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 22:44:18,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:18,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 22:44:18,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:18,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 22:44:18,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:18,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 22:44:18,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:18,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-13 22:44:18,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:18,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-13 22:44:18,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:18,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-13 22:44:18,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:18,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-13 22:44:18,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:18,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-13 22:44:18,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:18,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-13 22:44:18,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:18,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-13 22:44:18,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:18,213 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2022-07-13 22:44:18,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:44:18,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681286272] [2022-07-13 22:44:18,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681286272] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:44:18,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298679183] [2022-07-13 22:44:18,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:44:18,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:44:18,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:44:18,216 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) [2022-07-13 22:44:18,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-13 22:44:18,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:18,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 2784 conjuncts, 38 conjunts are in the unsatisfiable core [2022-07-13 22:44:18,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:44:18,696 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-13 22:44:18,896 INFO L390 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 17 treesize of output 9 [2022-07-13 22:44:18,944 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 84 proven. 4 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2022-07-13 22:44:18,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:44:19,370 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 3 proven. 45 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2022-07-13 22:44:19,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1298679183] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 22:44:19,371 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 22:44:19,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 31 [2022-07-13 22:44:19,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416106021] [2022-07-13 22:44:19,371 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 22:44:19,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-07-13 22:44:19,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:44:19,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-07-13 22:44:19,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=855, Unknown=0, NotChecked=0, Total=930 [2022-07-13 22:44:19,372 INFO L87 Difference]: Start difference. First operand 169 states and 236 transitions. Second operand has 31 states, 28 states have (on average 4.214285714285714) internal successors, (118), 23 states have internal predecessors, (118), 12 states have call successors, (56), 7 states have call predecessors, (56), 8 states have return successors, (53), 11 states have call predecessors, (53), 11 states have call successors, (53) [2022-07-13 22:44:23,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:44:23,016 INFO L93 Difference]: Finished difference Result 339 states and 478 transitions. [2022-07-13 22:44:23,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-13 22:44:23,017 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 28 states have (on average 4.214285714285714) internal successors, (118), 23 states have internal predecessors, (118), 12 states have call successors, (56), 7 states have call predecessors, (56), 8 states have return successors, (53), 11 states have call predecessors, (53), 11 states have call successors, (53) Word has length 138 [2022-07-13 22:44:23,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:44:23,018 INFO L225 Difference]: With dead ends: 339 [2022-07-13 22:44:23,018 INFO L226 Difference]: Without dead ends: 174 [2022-07-13 22:44:23,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 296 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=239, Invalid=2311, Unknown=0, NotChecked=0, Total=2550 [2022-07-13 22:44:23,019 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 199 mSDsluCounter, 2171 mSDsCounter, 0 mSdLazyCounter, 3331 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 2344 SdHoareTripleChecker+Invalid, 3673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 3331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 198 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-07-13 22:44:23,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 2344 Invalid, 3673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 3331 Invalid, 0 Unknown, 198 Unchecked, 3.1s Time] [2022-07-13 22:44:23,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2022-07-13 22:44:23,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 169. [2022-07-13 22:44:23,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 105 states have (on average 1.2095238095238094) internal successors, (127), 108 states have internal predecessors, (127), 49 states have call successors, (49), 12 states have call predecessors, (49), 14 states have return successors, (58), 48 states have call predecessors, (58), 48 states have call successors, (58) [2022-07-13 22:44:23,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 234 transitions. [2022-07-13 22:44:23,028 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 234 transitions. Word has length 138 [2022-07-13 22:44:23,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:44:23,028 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 234 transitions. [2022-07-13 22:44:23,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 28 states have (on average 4.214285714285714) internal successors, (118), 23 states have internal predecessors, (118), 12 states have call successors, (56), 7 states have call predecessors, (56), 8 states have return successors, (53), 11 states have call predecessors, (53), 11 states have call successors, (53) [2022-07-13 22:44:23,029 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 234 transitions. [2022-07-13 22:44:23,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-07-13 22:44:23,030 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:44:23,030 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:44:23,053 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-13 22:44:23,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:44:23,251 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:44:23,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:44:23,252 INFO L85 PathProgramCache]: Analyzing trace with hash 228331456, now seen corresponding path program 1 times [2022-07-13 22:44:23,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:44:23,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171095428] [2022-07-13 22:44:23,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:44:23,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:44:23,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:23,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:44:23,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:23,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:44:23,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:23,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:44:23,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:23,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:44:23,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:23,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 22:44:23,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:23,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-13 22:44:23,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:23,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 22:44:23,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:23,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-13 22:44:23,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:23,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-13 22:44:23,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:23,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 22:44:23,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:23,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-13 22:44:23,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:23,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-13 22:44:23,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:23,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-13 22:44:23,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:23,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-13 22:44:23,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:23,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-13 22:44:23,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:23,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-13 22:44:23,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:23,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-13 22:44:23,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:23,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-13 22:44:23,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:23,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-13 22:44:23,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:23,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-13 22:44:23,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:23,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-13 22:44:23,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:23,544 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2022-07-13 22:44:23,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:44:23,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171095428] [2022-07-13 22:44:23,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171095428] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:44:23,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:44:23,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 22:44:23,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429211941] [2022-07-13 22:44:23,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:44:23,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 22:44:23,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:44:23,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 22:44:23,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 22:44:23,547 INFO L87 Difference]: Start difference. First operand 169 states and 234 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (23), 4 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-13 22:44:24,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:44:24,193 INFO L93 Difference]: Finished difference Result 305 states and 428 transitions. [2022-07-13 22:44:24,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 22:44:24,194 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (23), 4 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 153 [2022-07-13 22:44:24,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:44:24,195 INFO L225 Difference]: With dead ends: 305 [2022-07-13 22:44:24,195 INFO L226 Difference]: Without dead ends: 176 [2022-07-13 22:44:24,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:44:24,196 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 118 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 22:44:24,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 485 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 22:44:24,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2022-07-13 22:44:24,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 173. [2022-07-13 22:44:24,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 108 states have (on average 1.2222222222222223) internal successors, (132), 112 states have internal predecessors, (132), 49 states have call successors, (49), 12 states have call predecessors, (49), 15 states have return successors, (59), 48 states have call predecessors, (59), 48 states have call successors, (59) [2022-07-13 22:44:24,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 240 transitions. [2022-07-13 22:44:24,208 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 240 transitions. Word has length 153 [2022-07-13 22:44:24,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:44:24,210 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 240 transitions. [2022-07-13 22:44:24,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (23), 4 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-13 22:44:24,210 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 240 transitions. [2022-07-13 22:44:24,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-07-13 22:44:24,212 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:44:24,212 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:44:24,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 22:44:24,212 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:44:24,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:44:24,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1094068841, now seen corresponding path program 1 times [2022-07-13 22:44:24,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:44:24,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408623005] [2022-07-13 22:44:24,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:44:24,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:44:24,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:24,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:44:24,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:24,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:44:24,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:24,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:44:24,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:24,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:44:24,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:24,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 22:44:24,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:24,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-13 22:44:24,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:24,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 22:44:24,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:24,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-13 22:44:24,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:24,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-13 22:44:24,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:24,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 22:44:24,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:24,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-13 22:44:24,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:24,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 22:44:24,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:24,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-13 22:44:24,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:24,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-13 22:44:24,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:24,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-13 22:44:24,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:24,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-13 22:44:24,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:24,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-13 22:44:24,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:24,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-13 22:44:24,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:24,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-13 22:44:24,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:24,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-13 22:44:24,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:24,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-13 22:44:24,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:24,635 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2022-07-13 22:44:24,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:44:24,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408623005] [2022-07-13 22:44:24,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408623005] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:44:24,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521940389] [2022-07-13 22:44:24,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:44:24,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:44:24,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:44:24,637 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) [2022-07-13 22:44:24,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-13 22:44:25,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:25,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 2962 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-13 22:44:25,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:44:25,143 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2022-07-13 22:44:25,143 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:44:25,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1521940389] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:44:25,144 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:44:25,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7] total 14 [2022-07-13 22:44:25,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718642970] [2022-07-13 22:44:25,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:44:25,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 22:44:25,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:44:25,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 22:44:25,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:44:25,145 INFO L87 Difference]: Start difference. First operand 173 states and 240 transitions. Second operand has 9 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-07-13 22:44:25,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:44:25,305 INFO L93 Difference]: Finished difference Result 324 states and 462 transitions. [2022-07-13 22:44:25,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 22:44:25,305 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 154 [2022-07-13 22:44:25,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:44:25,306 INFO L225 Difference]: With dead ends: 324 [2022-07-13 22:44:25,306 INFO L226 Difference]: Without dead ends: 178 [2022-07-13 22:44:25,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2022-07-13 22:44:25,307 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 12 mSDsluCounter, 1384 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1591 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 22:44:25,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1591 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 22:44:25,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2022-07-13 22:44:25,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2022-07-13 22:44:25,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 112 states have (on average 1.2142857142857142) internal successors, (136), 117 states have internal predecessors, (136), 49 states have call successors, (49), 12 states have call predecessors, (49), 16 states have return successors, (68), 48 states have call predecessors, (68), 48 states have call successors, (68) [2022-07-13 22:44:25,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 253 transitions. [2022-07-13 22:44:25,317 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 253 transitions. Word has length 154 [2022-07-13 22:44:25,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:44:25,317 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 253 transitions. [2022-07-13 22:44:25,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-07-13 22:44:25,317 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 253 transitions. [2022-07-13 22:44:25,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-13 22:44:25,319 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:44:25,319 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:44:25,340 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-13 22:44:25,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:44:25,534 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:44:25,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:44:25,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1874417604, now seen corresponding path program 1 times [2022-07-13 22:44:25,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:44:25,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970080892] [2022-07-13 22:44:25,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:44:25,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:44:25,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:25,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:44:25,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:25,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:44:25,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:25,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:44:25,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:25,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:44:25,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:25,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 22:44:25,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:25,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-13 22:44:25,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:25,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:44:25,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:25,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 22:44:25,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:25,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-13 22:44:25,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:25,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 22:44:25,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:25,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-13 22:44:25,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:25,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-13 22:44:25,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:25,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-13 22:44:25,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:25,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 22:44:25,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:25,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-13 22:44:25,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:25,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-13 22:44:25,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:25,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-13 22:44:25,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:25,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-13 22:44:25,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:25,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-13 22:44:25,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:25,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 22:44:25,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:25,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-13 22:44:25,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:25,893 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2022-07-13 22:44:25,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:44:25,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970080892] [2022-07-13 22:44:25,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970080892] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:44:25,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001402974] [2022-07-13 22:44:25,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:44:25,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:44:25,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:44:25,896 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) [2022-07-13 22:44:25,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-13 22:44:26,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:26,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 2967 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-13 22:44:26,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:44:26,453 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2022-07-13 22:44:26,454 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:44:26,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1001402974] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:44:26,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:44:26,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2022-07-13 22:44:26,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222691078] [2022-07-13 22:44:26,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:44:26,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 22:44:26,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:44:26,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 22:44:26,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:44:26,456 INFO L87 Difference]: Start difference. First operand 178 states and 253 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-13 22:44:26,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:44:26,717 INFO L93 Difference]: Finished difference Result 329 states and 485 transitions. [2022-07-13 22:44:26,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 22:44:26,718 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 156 [2022-07-13 22:44:26,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:44:26,719 INFO L225 Difference]: With dead ends: 329 [2022-07-13 22:44:26,719 INFO L226 Difference]: Without dead ends: 178 [2022-07-13 22:44:26,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-07-13 22:44:26,720 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 17 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 45 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 22:44:26,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 743 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 90 Invalid, 0 Unknown, 45 Unchecked, 0.2s Time] [2022-07-13 22:44:26,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2022-07-13 22:44:26,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2022-07-13 22:44:26,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 112 states have (on average 1.2053571428571428) internal successors, (135), 117 states have internal predecessors, (135), 49 states have call successors, (49), 12 states have call predecessors, (49), 16 states have return successors, (68), 48 states have call predecessors, (68), 48 states have call successors, (68) [2022-07-13 22:44:26,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 252 transitions. [2022-07-13 22:44:26,729 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 252 transitions. Word has length 156 [2022-07-13 22:44:26,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:44:26,730 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 252 transitions. [2022-07-13 22:44:26,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-13 22:44:26,730 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 252 transitions. [2022-07-13 22:44:26,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-13 22:44:26,732 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:44:26,732 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:44:26,769 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-13 22:44:26,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:44:26,943 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:44:26,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:44:26,944 INFO L85 PathProgramCache]: Analyzing trace with hash 31941890, now seen corresponding path program 1 times [2022-07-13 22:44:26,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:44:26,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181531299] [2022-07-13 22:44:26,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:44:26,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:44:27,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:27,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:44:27,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:27,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:44:27,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:27,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:44:27,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:27,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:44:27,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:27,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 22:44:27,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:27,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-13 22:44:27,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:27,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:44:27,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:27,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 22:44:27,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:27,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-13 22:44:27,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:27,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 22:44:27,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:27,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-13 22:44:27,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:27,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-13 22:44:27,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:27,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-13 22:44:27,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:27,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 22:44:27,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:27,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-13 22:44:27,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:27,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-13 22:44:27,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:27,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-13 22:44:27,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:27,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-13 22:44:27,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:27,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-13 22:44:27,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:27,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 22:44:27,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:27,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-13 22:44:27,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:27,276 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2022-07-13 22:44:27,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:44:27,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181531299] [2022-07-13 22:44:27,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181531299] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:44:27,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884579461] [2022-07-13 22:44:27,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:44:27,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:44:27,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:44:27,280 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) [2022-07-13 22:44:27,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-13 22:44:27,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:27,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 2972 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 22:44:27,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:44:27,825 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 132 proven. 1 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2022-07-13 22:44:27,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:44:27,893 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2022-07-13 22:44:27,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [884579461] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-13 22:44:27,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-13 22:44:27,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 5] total 10 [2022-07-13 22:44:27,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934371661] [2022-07-13 22:44:27,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:44:27,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 22:44:27,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:44:27,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 22:44:27,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:44:27,895 INFO L87 Difference]: Start difference. First operand 178 states and 252 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-13 22:44:27,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:44:27,979 INFO L93 Difference]: Finished difference Result 323 states and 466 transitions. [2022-07-13 22:44:27,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 22:44:27,980 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 156 [2022-07-13 22:44:27,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:44:27,981 INFO L225 Difference]: With dead ends: 323 [2022-07-13 22:44:27,981 INFO L226 Difference]: Without dead ends: 184 [2022-07-13 22:44:27,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 347 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:44:27,982 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 5 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 620 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 22:44:27,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 620 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 22:44:27,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2022-07-13 22:44:27,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 181. [2022-07-13 22:44:27,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 115 states have (on average 1.2) internal successors, (138), 119 states have internal predecessors, (138), 49 states have call successors, (49), 13 states have call predecessors, (49), 16 states have return successors, (68), 48 states have call predecessors, (68), 48 states have call successors, (68) [2022-07-13 22:44:27,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 255 transitions. [2022-07-13 22:44:27,994 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 255 transitions. Word has length 156 [2022-07-13 22:44:27,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:44:27,994 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 255 transitions. [2022-07-13 22:44:27,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-13 22:44:27,995 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 255 transitions. [2022-07-13 22:44:27,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-07-13 22:44:27,996 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:44:27,996 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:44:28,033 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-13 22:44:28,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-13 22:44:28,201 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:44:28,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:44:28,201 INFO L85 PathProgramCache]: Analyzing trace with hash 71541033, now seen corresponding path program 1 times [2022-07-13 22:44:28,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:44:28,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095105728] [2022-07-13 22:44:28,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:44:28,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:44:28,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:28,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:44:28,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:28,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:44:28,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:28,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:44:28,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:28,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:44:28,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:28,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 22:44:28,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:28,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-13 22:44:28,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:28,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:44:28,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:28,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 22:44:28,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:28,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-13 22:44:28,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:28,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 22:44:28,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:28,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-13 22:44:28,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:28,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-13 22:44:28,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:28,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-13 22:44:28,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:28,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-13 22:44:28,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:28,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-13 22:44:28,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:28,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 22:44:28,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:28,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-13 22:44:28,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:28,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-13 22:44:28,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:28,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-13 22:44:28,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:28,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-13 22:44:28,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:28,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 22:44:28,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:28,601 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2022-07-13 22:44:28,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:44:28,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095105728] [2022-07-13 22:44:28,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095105728] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:44:28,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424167197] [2022-07-13 22:44:28,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:44:28,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:44:28,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:44:28,603 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) [2022-07-13 22:44:28,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-13 22:44:29,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:29,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 2995 conjuncts, 56 conjunts are in the unsatisfiable core [2022-07-13 22:44:29,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:44:34,246 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2022-07-13 22:44:34,250 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-07-13 22:44:34,253 INFO L390 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 17 treesize of output 9 [2022-07-13 22:44:34,283 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-07-13 22:44:34,283 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:44:34,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [424167197] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:44:34,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:44:34,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [7] total 18 [2022-07-13 22:44:34,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409182984] [2022-07-13 22:44:34,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:44:34,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-13 22:44:34,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:44:34,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-13 22:44:34,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=256, Unknown=1, NotChecked=0, Total=306 [2022-07-13 22:44:34,285 INFO L87 Difference]: Start difference. First operand 181 states and 255 transitions. Second operand has 13 states, 13 states have (on average 5.615384615384615) internal successors, (73), 12 states have internal predecessors, (73), 4 states have call successors, (23), 3 states have call predecessors, (23), 4 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2022-07-13 22:44:35,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:44:35,911 INFO L93 Difference]: Finished difference Result 395 states and 580 transitions. [2022-07-13 22:44:35,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 22:44:35,912 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.615384615384615) internal successors, (73), 12 states have internal predecessors, (73), 4 states have call successors, (23), 3 states have call predecessors, (23), 4 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) Word has length 157 [2022-07-13 22:44:35,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:44:35,913 INFO L225 Difference]: With dead ends: 395 [2022-07-13 22:44:35,913 INFO L226 Difference]: Without dead ends: 252 [2022-07-13 22:44:35,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 179 SyntacticMatches, 7 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=87, Invalid=418, Unknown=1, NotChecked=0, Total=506 [2022-07-13 22:44:35,914 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 298 mSDsluCounter, 869 mSDsCounter, 0 mSdLazyCounter, 1424 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 1061 SdHoareTripleChecker+Invalid, 1734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 215 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-13 22:44:35,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 1061 Invalid, 1734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1424 Invalid, 0 Unknown, 215 Unchecked, 1.4s Time] [2022-07-13 22:44:35,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2022-07-13 22:44:35,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 202. [2022-07-13 22:44:35,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 130 states have (on average 1.1846153846153846) internal successors, (154), 134 states have internal predecessors, (154), 53 states have call successors, (53), 14 states have call predecessors, (53), 18 states have return successors, (82), 53 states have call predecessors, (82), 52 states have call successors, (82) [2022-07-13 22:44:35,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 289 transitions. [2022-07-13 22:44:35,926 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 289 transitions. Word has length 157 [2022-07-13 22:44:35,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:44:35,927 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 289 transitions. [2022-07-13 22:44:35,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.615384615384615) internal successors, (73), 12 states have internal predecessors, (73), 4 states have call successors, (23), 3 states have call predecessors, (23), 4 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2022-07-13 22:44:35,927 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 289 transitions. [2022-07-13 22:44:35,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-07-13 22:44:35,928 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:44:35,928 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:44:35,950 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-07-13 22:44:36,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-13 22:44:36,148 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:44:36,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:44:36,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1978867865, now seen corresponding path program 1 times [2022-07-13 22:44:36,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:44:36,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047806003] [2022-07-13 22:44:36,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:44:36,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:44:36,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:36,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:44:36,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:36,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:44:36,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:36,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:44:36,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:36,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:44:36,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:36,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 22:44:36,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:36,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-13 22:44:36,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:36,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:44:36,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:36,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 22:44:36,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:36,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-13 22:44:36,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:36,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 22:44:36,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:36,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-13 22:44:36,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:36,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-13 22:44:36,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:36,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-13 22:44:36,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:36,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-13 22:44:36,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:36,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-13 22:44:36,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:36,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 22:44:36,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:36,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-13 22:44:36,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:36,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-13 22:44:36,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:36,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-13 22:44:36,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:36,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-13 22:44:36,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:36,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 22:44:36,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:36,372 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2022-07-13 22:44:36,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:44:36,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047806003] [2022-07-13 22:44:36,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047806003] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:44:36,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805819018] [2022-07-13 22:44:36,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:44:36,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:44:36,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:44:36,374 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) [2022-07-13 22:44:36,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-13 22:44:36,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:36,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 2990 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 22:44:36,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:44:36,840 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2022-07-13 22:44:36,841 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:44:36,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805819018] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:44:36,841 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:44:36,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2022-07-13 22:44:36,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761605424] [2022-07-13 22:44:36,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:44:36,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 22:44:36,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:44:36,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 22:44:36,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 22:44:36,845 INFO L87 Difference]: Start difference. First operand 202 states and 289 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-13 22:44:36,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:44:36,868 INFO L93 Difference]: Finished difference Result 353 states and 515 transitions. [2022-07-13 22:44:36,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 22:44:36,869 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 157 [2022-07-13 22:44:36,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:44:36,870 INFO L225 Difference]: With dead ends: 353 [2022-07-13 22:44:36,870 INFO L226 Difference]: Without dead ends: 190 [2022-07-13 22:44:36,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-13 22:44:36,871 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 6 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 22:44:36,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 628 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 22:44:36,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2022-07-13 22:44:36,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 187. [2022-07-13 22:44:36,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 120 states have (on average 1.1833333333333333) internal successors, (142), 124 states have internal predecessors, (142), 49 states have call successors, (49), 14 states have call predecessors, (49), 17 states have return successors, (68), 48 states have call predecessors, (68), 48 states have call successors, (68) [2022-07-13 22:44:36,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 259 transitions. [2022-07-13 22:44:36,881 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 259 transitions. Word has length 157 [2022-07-13 22:44:36,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:44:36,881 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 259 transitions. [2022-07-13 22:44:36,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-13 22:44:36,882 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 259 transitions. [2022-07-13 22:44:36,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-07-13 22:44:36,883 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:44:36,883 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:44:36,904 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-07-13 22:44:37,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-07-13 22:44:37,104 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:44:37,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:44:37,105 INFO L85 PathProgramCache]: Analyzing trace with hash -30578121, now seen corresponding path program 1 times [2022-07-13 22:44:37,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:44:37,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423964367] [2022-07-13 22:44:37,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:44:37,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:44:37,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:37,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:44:37,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:37,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:44:37,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:37,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:44:37,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:37,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:44:37,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:37,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 22:44:37,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:37,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-13 22:44:37,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:37,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:44:37,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:37,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 22:44:37,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:37,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-13 22:44:37,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:37,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 22:44:37,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:37,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-13 22:44:37,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:37,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 22:44:37,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:37,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-13 22:44:37,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:37,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 22:44:37,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:37,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-13 22:44:37,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:37,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 22:44:37,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:37,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-13 22:44:37,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:37,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-13 22:44:37,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:37,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-13 22:44:37,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:37,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 22:44:37,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:37,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-13 22:44:37,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:37,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-07-13 22:44:37,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:37,500 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2022-07-13 22:44:37,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:44:37,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423964367] [2022-07-13 22:44:37,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423964367] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:44:37,500 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:44:37,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 22:44:37,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414304427] [2022-07-13 22:44:37,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:44:37,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 22:44:37,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:44:37,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 22:44:37,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-13 22:44:37,501 INFO L87 Difference]: Start difference. First operand 187 states and 259 transitions. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 6 states have internal predecessors, (60), 4 states have call successors, (24), 4 states have call predecessors, (24), 1 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2022-07-13 22:44:38,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:44:38,402 INFO L93 Difference]: Finished difference Result 349 states and 491 transitions. [2022-07-13 22:44:38,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 22:44:38,403 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 6 states have internal predecessors, (60), 4 states have call successors, (24), 4 states have call predecessors, (24), 1 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) Word has length 164 [2022-07-13 22:44:38,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:44:38,404 INFO L225 Difference]: With dead ends: 349 [2022-07-13 22:44:38,404 INFO L226 Difference]: Without dead ends: 190 [2022-07-13 22:44:38,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-07-13 22:44:38,405 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 118 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 22:44:38,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 504 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 22:44:38,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2022-07-13 22:44:38,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 187. [2022-07-13 22:44:38,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 120 states have (on average 1.175) internal successors, (141), 124 states have internal predecessors, (141), 49 states have call successors, (49), 14 states have call predecessors, (49), 17 states have return successors, (68), 48 states have call predecessors, (68), 48 states have call successors, (68) [2022-07-13 22:44:38,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 258 transitions. [2022-07-13 22:44:38,415 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 258 transitions. Word has length 164 [2022-07-13 22:44:38,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:44:38,415 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 258 transitions. [2022-07-13 22:44:38,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 6 states have internal predecessors, (60), 4 states have call successors, (24), 4 states have call predecessors, (24), 1 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2022-07-13 22:44:38,415 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 258 transitions. [2022-07-13 22:44:38,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-07-13 22:44:38,417 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:44:38,417 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:44:38,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-13 22:44:38,417 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:44:38,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:44:38,417 INFO L85 PathProgramCache]: Analyzing trace with hash -137071606, now seen corresponding path program 1 times [2022-07-13 22:44:38,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:44:38,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537483120] [2022-07-13 22:44:38,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:44:38,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:44:38,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:38,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:44:38,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:38,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:44:38,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:38,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:44:38,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:38,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:44:38,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:38,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 22:44:38,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:38,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-13 22:44:38,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:38,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:44:38,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:38,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 22:44:38,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:38,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-13 22:44:38,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:38,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 22:44:38,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:38,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-13 22:44:38,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:38,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 22:44:38,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:38,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-13 22:44:38,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:38,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-13 22:44:38,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:38,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-13 22:44:38,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:38,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-13 22:44:38,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:38,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-13 22:44:38,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:38,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-13 22:44:38,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:38,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-13 22:44:38,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:38,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-13 22:44:38,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:38,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-13 22:44:38,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:38,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 22:44:38,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:38,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-07-13 22:44:38,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:38,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-07-13 22:44:38,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:38,827 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2022-07-13 22:44:38,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:44:38,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537483120] [2022-07-13 22:44:38,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537483120] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:44:38,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281020588] [2022-07-13 22:44:38,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:44:38,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:44:38,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:44:38,829 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) [2022-07-13 22:44:38,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-13 22:44:39,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:39,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 3077 conjuncts, 80 conjunts are in the unsatisfiable core [2022-07-13 22:44:39,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:44:39,714 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-13 22:44:39,714 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 23 [2022-07-13 22:44:39,721 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2022-07-13 22:44:39,759 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-13 22:44:39,760 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 27 [2022-07-13 22:44:39,765 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2022-07-13 22:44:39,799 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2529 (Array Int Int))) (= (store |c_old(#memory_int)| |c_#Ultimate.C_memcpy_dest.base| v_ArrVal_2529) |c_#memory_int|)) is different from true [2022-07-13 22:44:39,804 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2530 (Array Int Int))) (= (store |c_old(#memory_int)| |c_#Ultimate.C_memcpy_dest.base| v_ArrVal_2530) |c_#memory_int|)) is different from true [2022-07-13 22:44:39,812 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-13 22:44:39,823 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-13 22:44:40,038 INFO L390 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 9 treesize of output 5 [2022-07-13 22:44:40,057 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 104 proven. 112 refuted. 0 times theorem prover too weak. 130 trivial. 2 not checked. [2022-07-13 22:44:40,057 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:44:40,327 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2022-07-13 22:44:40,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281020588] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 22:44:40,327 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 22:44:40,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 21, 7] total 31 [2022-07-13 22:44:40,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467702318] [2022-07-13 22:44:40,327 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 22:44:40,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-07-13 22:44:40,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:44:40,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-07-13 22:44:40,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=741, Unknown=2, NotChecked=110, Total=930 [2022-07-13 22:44:40,329 INFO L87 Difference]: Start difference. First operand 187 states and 258 transitions. Second operand has 31 states, 30 states have (on average 4.8) internal successors, (144), 28 states have internal predecessors, (144), 11 states have call successors, (60), 8 states have call predecessors, (60), 9 states have return successors, (53), 10 states have call predecessors, (53), 11 states have call successors, (53) [2022-07-13 22:44:50,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:44:50,521 INFO L93 Difference]: Finished difference Result 395 states and 588 transitions. [2022-07-13 22:44:50,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-07-13 22:44:50,521 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 4.8) internal successors, (144), 28 states have internal predecessors, (144), 11 states have call successors, (60), 8 states have call predecessors, (60), 9 states have return successors, (53), 10 states have call predecessors, (53), 11 states have call successors, (53) Word has length 175 [2022-07-13 22:44:50,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:44:50,523 INFO L225 Difference]: With dead ends: 395 [2022-07-13 22:44:50,523 INFO L226 Difference]: Without dead ends: 254 [2022-07-13 22:44:50,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 368 SyntacticMatches, 9 SemanticMatches, 51 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 440 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=259, Invalid=2294, Unknown=5, NotChecked=198, Total=2756 [2022-07-13 22:44:50,525 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 376 mSDsluCounter, 1996 mSDsCounter, 0 mSdLazyCounter, 3635 mSolverCounterSat, 348 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 2196 SdHoareTripleChecker+Invalid, 5189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 348 IncrementalHoareTripleChecker+Valid, 3635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1206 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-07-13 22:44:50,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [395 Valid, 2196 Invalid, 5189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [348 Valid, 3635 Invalid, 0 Unknown, 1206 Unchecked, 3.6s Time] [2022-07-13 22:44:50,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2022-07-13 22:44:50,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 197. [2022-07-13 22:44:50,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 128 states have (on average 1.1796875) internal successors, (151), 131 states have internal predecessors, (151), 50 states have call successors, (50), 15 states have call predecessors, (50), 18 states have return successors, (69), 50 states have call predecessors, (69), 49 states have call successors, (69) [2022-07-13 22:44:50,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 270 transitions. [2022-07-13 22:44:50,540 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 270 transitions. Word has length 175 [2022-07-13 22:44:50,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:44:50,540 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 270 transitions. [2022-07-13 22:44:50,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 4.8) internal successors, (144), 28 states have internal predecessors, (144), 11 states have call successors, (60), 8 states have call predecessors, (60), 9 states have return successors, (53), 10 states have call predecessors, (53), 11 states have call successors, (53) [2022-07-13 22:44:50,540 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 270 transitions. [2022-07-13 22:44:50,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-07-13 22:44:50,542 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:44:50,542 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:44:50,564 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-13 22:44:50,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-07-13 22:44:50,755 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:44:50,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:44:50,756 INFO L85 PathProgramCache]: Analyzing trace with hash -985275679, now seen corresponding path program 1 times [2022-07-13 22:44:50,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:44:50,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546888604] [2022-07-13 22:44:50,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:44:50,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:44:50,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:51,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:44:51,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:51,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:44:51,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:51,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:44:51,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:51,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:44:51,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:51,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 22:44:51,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:51,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-13 22:44:51,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:51,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:44:51,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:51,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 22:44:51,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:51,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-13 22:44:51,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:51,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 22:44:51,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:51,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-13 22:44:51,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:51,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 22:44:51,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:51,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-13 22:44:51,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:51,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-13 22:44:51,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:51,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-13 22:44:51,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:51,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-13 22:44:51,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:51,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-13 22:44:51,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:51,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-13 22:44:51,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:51,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-13 22:44:51,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:51,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 22:44:51,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:51,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-13 22:44:51,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:51,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-13 22:44:51,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:51,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-13 22:44:51,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:51,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-07-13 22:44:51,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:51,387 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 34 proven. 11 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2022-07-13 22:44:51,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:44:51,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546888604] [2022-07-13 22:44:51,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546888604] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:44:51,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660778013] [2022-07-13 22:44:51,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:44:51,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:44:51,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:44:51,389 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) [2022-07-13 22:44:51,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-13 22:44:51,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:51,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 3205 conjuncts, 139 conjunts are in the unsatisfiable core [2022-07-13 22:44:51,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:44:52,397 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-13 22:44:52,397 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-07-13 22:44:52,462 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-07-13 22:44:52,463 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 30 [2022-07-13 22:44:52,700 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 32 [2022-07-13 22:44:52,761 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-13 22:44:52,762 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-07-13 22:44:52,870 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|ULTIMATE.start_save_byte_from_array_~storage#1.base| Int)) (= (select |c_#valid| |ULTIMATE.start_save_byte_from_array_~storage#1.base|) 1)) (exists ((v_ArrVal_3051 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_#Ultimate.C_memcpy_dest.base| v_ArrVal_3051)))) is different from true [2022-07-13 22:44:52,875 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|ULTIMATE.start_save_byte_from_array_~storage#1.base| Int)) (= (select |c_#valid| |ULTIMATE.start_save_byte_from_array_~storage#1.base|) 1)) (exists ((v_ArrVal_3053 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_#Ultimate.C_memcpy_dest.base| v_ArrVal_3053)))) is different from true [2022-07-13 22:44:52,883 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|ULTIMATE.start_save_byte_from_array_~storage#1.base| Int)) (= (select |c_#valid| |ULTIMATE.start_save_byte_from_array_~storage#1.base|) 1)) (exists ((v_ArrVal_3056 (Array Int Int))) (= (store |c_old(#memory_int)| |c_#Ultimate.C_memcpy_dest.base| v_ArrVal_3056) |c_#memory_int|))) is different from true [2022-07-13 22:44:52,906 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-13 22:44:52,906 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 36 [2022-07-13 22:44:52,927 INFO L390 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 17 treesize of output 13 [2022-07-13 22:44:53,116 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-07-13 22:44:53,117 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 36 [2022-07-13 22:44:54,502 INFO L356 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-07-13 22:44:54,503 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 22 treesize of output 33 [2022-07-13 22:44:55,022 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-13 22:44:55,022 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-07-13 22:44:55,059 INFO L390 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 16 treesize of output 18 [2022-07-13 22:44:55,561 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 124 proven. 150 refuted. 0 times theorem prover too weak. 72 trivial. 4 not checked. [2022-07-13 22:44:55,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:44:56,036 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3060 (Array Int Int))) (let ((.cse0 (select (select (store |c_#memory_int| |c_aws_byte_cursor_read_aws_byte_cursor_advance_nospec_~#rv~7#1.base| v_ArrVal_3060) |c_aws_byte_cursor_read_aws_byte_cursor_advance_nospec_~cursor#1.base|) |c_aws_byte_cursor_read_aws_byte_cursor_advance_nospec_~cursor#1.offset|))) (<= .cse0 (* (div .cse0 18446744073709551616) 18446744073709551616)))) is different from false [2022-07-13 22:44:56,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660778013] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:44:56,119 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 22:44:56,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 39] total 51 [2022-07-13 22:44:56,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462448378] [2022-07-13 22:44:56,120 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 22:44:56,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-07-13 22:44:56,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:44:56,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-07-13 22:44:56,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=2958, Unknown=4, NotChecked=452, Total=3660 [2022-07-13 22:44:56,122 INFO L87 Difference]: Start difference. First operand 197 states and 270 transitions. Second operand has 51 states, 48 states have (on average 3.0) internal successors, (144), 45 states have internal predecessors, (144), 15 states have call successors, (45), 11 states have call predecessors, (45), 10 states have return successors, (40), 12 states have call predecessors, (40), 14 states have call successors, (40) [2022-07-13 22:45:01,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:45:01,386 INFO L93 Difference]: Finished difference Result 487 states and 703 transitions. [2022-07-13 22:45:01,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-07-13 22:45:01,387 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 48 states have (on average 3.0) internal successors, (144), 45 states have internal predecessors, (144), 15 states have call successors, (45), 11 states have call predecessors, (45), 10 states have return successors, (40), 12 states have call predecessors, (40), 14 states have call successors, (40) Word has length 176 [2022-07-13 22:45:01,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:45:01,389 INFO L225 Difference]: With dead ends: 487 [2022-07-13 22:45:01,389 INFO L226 Difference]: Without dead ends: 341 [2022-07-13 22:45:01,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 180 SyntacticMatches, 34 SemanticMatches, 94 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 3041 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=686, Invalid=7686, Unknown=16, NotChecked=732, Total=9120 [2022-07-13 22:45:01,392 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 251 mSDsluCounter, 2469 mSDsCounter, 0 mSdLazyCounter, 2033 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 2681 SdHoareTripleChecker+Invalid, 7116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 2033 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4862 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-13 22:45:01,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 2681 Invalid, 7116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [221 Valid, 2033 Invalid, 0 Unknown, 4862 Unchecked, 1.6s Time] [2022-07-13 22:45:01,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2022-07-13 22:45:01,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 265. [2022-07-13 22:45:01,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 173 states have (on average 1.1676300578034682) internal successors, (202), 177 states have internal predecessors, (202), 65 states have call successors, (65), 23 states have call predecessors, (65), 26 states have return successors, (89), 64 states have call predecessors, (89), 64 states have call successors, (89) [2022-07-13 22:45:01,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 356 transitions. [2022-07-13 22:45:01,410 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 356 transitions. Word has length 176 [2022-07-13 22:45:01,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:45:01,411 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 356 transitions. [2022-07-13 22:45:01,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 48 states have (on average 3.0) internal successors, (144), 45 states have internal predecessors, (144), 15 states have call successors, (45), 11 states have call predecessors, (45), 10 states have return successors, (40), 12 states have call predecessors, (40), 14 states have call successors, (40) [2022-07-13 22:45:01,411 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 356 transitions. [2022-07-13 22:45:01,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-07-13 22:45:01,412 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:45:01,412 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:45:01,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-13 22:45:01,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-07-13 22:45:01,627 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:45:01,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:45:01,628 INFO L85 PathProgramCache]: Analyzing trace with hash -529796826, now seen corresponding path program 1 times [2022-07-13 22:45:01,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:45:01,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869917473] [2022-07-13 22:45:01,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:45:01,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:45:02,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:02,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:45:02,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:02,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:45:02,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:02,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:45:02,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:02,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:45:02,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:02,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 22:45:02,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:02,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-13 22:45:02,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:02,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:45:02,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:02,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 22:45:02,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:02,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-13 22:45:02,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:02,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 22:45:02,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:02,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-13 22:45:02,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:02,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 22:45:02,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:02,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-13 22:45:02,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:02,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-13 22:45:02,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:02,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-13 22:45:02,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:02,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-13 22:45:02,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:02,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-13 22:45:02,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:02,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-13 22:45:02,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:02,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-13 22:45:02,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:02,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-13 22:45:02,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:02,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-13 22:45:02,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:02,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-13 22:45:02,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:02,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-13 22:45:02,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:02,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 22:45:02,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:02,273 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2022-07-13 22:45:02,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:45:02,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869917473] [2022-07-13 22:45:02,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869917473] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:45:02,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156363586] [2022-07-13 22:45:02,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:45:02,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:45:02,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:45:02,275 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:45:02,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-13 22:45:02,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:02,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 3422 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-13 22:45:02,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:45:02,979 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 172 proven. 6 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2022-07-13 22:45:02,979 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:45:03,115 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2022-07-13 22:45:03,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156363586] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 22:45:03,115 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 22:45:03,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 14 [2022-07-13 22:45:03,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047245856] [2022-07-13 22:45:03,116 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 22:45:03,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:45:03,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:45:03,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:45:03,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:45:03,117 INFO L87 Difference]: Start difference. First operand 265 states and 356 transitions. Second operand has 14 states, 14 states have (on average 6.857142857142857) internal successors, (96), 12 states have internal predecessors, (96), 2 states have call successors, (39), 4 states have call predecessors, (39), 4 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-07-13 22:45:04,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:45:04,684 INFO L93 Difference]: Finished difference Result 444 states and 610 transitions. [2022-07-13 22:45:04,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 22:45:04,685 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.857142857142857) internal successors, (96), 12 states have internal predecessors, (96), 2 states have call successors, (39), 4 states have call predecessors, (39), 4 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 180 [2022-07-13 22:45:04,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:45:04,686 INFO L225 Difference]: With dead ends: 444 [2022-07-13 22:45:04,686 INFO L226 Difference]: Without dead ends: 276 [2022-07-13 22:45:04,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 398 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=116, Invalid=390, Unknown=0, NotChecked=0, Total=506 [2022-07-13 22:45:04,687 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 171 mSDsluCounter, 602 mSDsCounter, 0 mSdLazyCounter, 783 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 788 SdHoareTripleChecker+Invalid, 906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-13 22:45:04,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 788 Invalid, 906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 783 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-13 22:45:04,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2022-07-13 22:45:04,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 266. [2022-07-13 22:45:04,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 174 states have (on average 1.1724137931034482) internal successors, (204), 178 states have internal predecessors, (204), 65 states have call successors, (65), 23 states have call predecessors, (65), 26 states have return successors, (89), 64 states have call predecessors, (89), 64 states have call successors, (89) [2022-07-13 22:45:04,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 358 transitions. [2022-07-13 22:45:04,704 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 358 transitions. Word has length 180 [2022-07-13 22:45:04,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:45:04,704 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 358 transitions. [2022-07-13 22:45:04,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.857142857142857) internal successors, (96), 12 states have internal predecessors, (96), 2 states have call successors, (39), 4 states have call predecessors, (39), 4 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-07-13 22:45:04,704 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 358 transitions. [2022-07-13 22:45:04,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-07-13 22:45:04,705 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:45:04,706 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:45:04,741 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-13 22:45:04,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-07-13 22:45:04,931 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:45:04,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:45:04,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1597924328, now seen corresponding path program 2 times [2022-07-13 22:45:04,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:45:04,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760002514] [2022-07-13 22:45:04,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:45:04,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:45:05,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:05,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:45:05,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:05,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:45:05,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:05,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:45:05,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:05,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:45:05,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:05,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 22:45:05,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:05,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-13 22:45:05,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:05,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:45:05,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:05,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 22:45:05,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:05,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-13 22:45:05,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:05,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 22:45:05,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:05,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-13 22:45:05,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:05,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 22:45:05,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:05,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-13 22:45:05,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:05,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-13 22:45:05,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:05,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-13 22:45:05,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:05,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-13 22:45:05,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:05,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-13 22:45:05,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:05,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-13 22:45:05,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:05,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-13 22:45:05,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:05,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-13 22:45:05,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:05,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-13 22:45:05,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:05,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-13 22:45:05,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:05,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-13 22:45:05,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:05,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 22:45:05,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:05,657 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2022-07-13 22:45:05,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:45:05,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760002514] [2022-07-13 22:45:05,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760002514] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:45:05,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575568093] [2022-07-13 22:45:05,658 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 22:45:05,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:45:05,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:45:05,660 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:45:05,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-13 22:45:06,910 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 22:45:06,911 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 22:45:06,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 3314 conjuncts, 84 conjunts are in the unsatisfiable core [2022-07-13 22:45:06,932 INFO L286 TraceCheckSpWp]: Computing forward predicates...