./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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_buf_write_from_whole_buffer_harness-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash cab1c092802d28f475b8a467f14dab6a3f796dc1a4441d8517361eeec98aa4cb --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 10:57:01,766 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 10:57:01,767 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 10:57:01,794 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 10:57:01,794 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 10:57:01,795 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 10:57:01,796 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 10:57:01,797 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 10:57:01,798 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 10:57:01,799 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 10:57:01,799 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 10:57:01,800 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 10:57:01,800 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 10:57:01,801 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 10:57:01,802 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 10:57:01,802 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 10:57:01,803 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 10:57:01,804 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 10:57:01,805 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 10:57:01,806 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 10:57:01,807 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 10:57:01,808 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 10:57:01,809 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 10:57:01,810 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 10:57:01,810 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 10:57:01,812 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 10:57:01,813 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 10:57:01,813 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 10:57:01,813 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 10:57:01,814 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 10:57:01,814 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 10:57:01,815 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 10:57:01,815 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 10:57:01,816 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 10:57:01,816 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 10:57:01,817 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 10:57:01,818 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 10:57:01,818 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 10:57:01,818 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 10:57:01,819 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 10:57:01,819 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 10:57:01,820 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 10:57:01,821 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-12 10:57:01,835 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 10:57:01,835 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 10:57:01,836 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 10:57:01,836 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 10:57:01,836 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 10:57:01,837 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 10:57:01,837 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 10:57:01,837 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 10:57:01,837 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 10:57:01,838 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 10:57:01,838 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 10:57:01,838 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 10:57:01,838 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 10:57:01,838 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 10:57:01,838 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 10:57:01,838 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 10:57:01,839 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 10:57:01,839 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 10:57:01,839 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 10:57:01,839 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 10:57:01,839 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 10:57:01,839 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:57:01,839 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 10:57:01,840 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 10:57:01,840 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 10:57:01,840 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 10:57:01,840 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 10:57:01,840 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 10:57:01,840 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 10:57:01,841 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 10:57:01,841 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cab1c092802d28f475b8a467f14dab6a3f796dc1a4441d8517361eeec98aa4cb [2022-07-12 10:57:02,020 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 10:57:02,050 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 10:57:02,054 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 10:57:02,055 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 10:57:02,056 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 10:57:02,057 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness-1.i [2022-07-12 10:57:02,101 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d51cc2825/c00ca9b1d42c46558d41f9fbe5950213/FLAG07e773d2c [2022-07-12 10:57:02,753 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 10:57:02,754 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness-1.i [2022-07-12 10:57:02,782 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d51cc2825/c00ca9b1d42c46558d41f9fbe5950213/FLAG07e773d2c [2022-07-12 10:57:03,136 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d51cc2825/c00ca9b1d42c46558d41f9fbe5950213 [2022-07-12 10:57:03,138 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 10:57:03,140 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 10:57:03,141 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 10:57:03,141 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 10:57:03,143 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 10:57:03,144 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:57:03" (1/1) ... [2022-07-12 10:57:03,145 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c142010 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:57:03, skipping insertion in model container [2022-07-12 10:57:03,145 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:57:03" (1/1) ... [2022-07-12 10:57:03,149 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 10:57:03,210 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 10:57:03,394 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_buf_write_from_whole_buffer_harness-1.i[4510,4523] [2022-07-12 10:57:03,401 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_buf_write_from_whole_buffer_harness-1.i[4570,4583] [2022-07-12 10:57:03,921 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:57:03,924 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:57:03,926 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:57:03,929 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:57:03,930 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:57:03,941 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:57:03,941 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:57:03,942 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:57:03,943 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:57:04,140 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-12 10:57:04,141 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-12 10:57:04,141 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-12 10:57:04,142 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-12 10:57:04,143 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-12 10:57:04,143 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-12 10:57:04,144 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-12 10:57:04,144 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-12 10:57:04,145 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-12 10:57:04,145 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-12 10:57:04,249 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-12 10:57:04,309 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:57:04,310 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:57:04,348 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:57:04,391 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 10:57:04,409 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_buf_write_from_whole_buffer_harness-1.i[4510,4523] [2022-07-12 10:57:04,410 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_buf_write_from_whole_buffer_harness-1.i[4570,4583] [2022-07-12 10:57:04,446 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:57:04,446 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:57:04,447 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:57:04,447 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:57:04,447 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:57:04,459 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:57:04,460 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:57:04,461 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:57:04,461 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:57:04,496 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-12 10:57:04,497 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-12 10:57:04,498 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-12 10:57:04,498 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-12 10:57:04,501 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-12 10:57:04,502 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-12 10:57:04,502 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-12 10:57:04,502 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-12 10:57:04,503 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-12 10:57:04,503 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-12 10:57:04,548 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-12 10:57:04,612 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:57:04,613 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:57:04,646 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:57:04,782 INFO L208 MainTranslator]: Completed translation [2022-07-12 10:57:04,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:57:04 WrapperNode [2022-07-12 10:57:04,782 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 10:57:04,783 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 10:57:04,783 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 10:57:04,783 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 10:57:04,789 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:57:04" (1/1) ... [2022-07-12 10:57:04,877 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:57:04" (1/1) ... [2022-07-12 10:57:04,933 INFO L137 Inliner]: procedures = 691, calls = 2668, calls flagged for inlining = 58, calls inlined = 5, statements flattened = 900 [2022-07-12 10:57:04,934 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 10:57:04,935 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 10:57:04,935 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 10:57:04,935 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 10:57:04,941 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:57:04" (1/1) ... [2022-07-12 10:57:04,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:57:04" (1/1) ... [2022-07-12 10:57:04,954 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:57:04" (1/1) ... [2022-07-12 10:57:04,955 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:57:04" (1/1) ... [2022-07-12 10:57:04,994 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:57:04" (1/1) ... [2022-07-12 10:57:05,006 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:57:04" (1/1) ... [2022-07-12 10:57:05,026 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:57:04" (1/1) ... [2022-07-12 10:57:05,034 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 10:57:05,038 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 10:57:05,039 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 10:57:05,039 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 10:57:05,040 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:57:04" (1/1) ... [2022-07-12 10:57:05,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:57:05,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:57:05,080 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) [2022-07-12 10:57:05,086 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 [2022-07-12 10:57:05,114 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2022-07-12 10:57:05,114 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2022-07-12 10:57:05,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 10:57:05,115 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-07-12 10:57:05,115 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-07-12 10:57:05,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 10:57:05,115 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-12 10:57:05,116 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-12 10:57:05,116 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-12 10:57:05,116 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 10:57:05,116 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2022-07-12 10:57:05,117 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2022-07-12 10:57:05,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-12 10:57:05,117 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2022-07-12 10:57:05,118 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2022-07-12 10:57:05,118 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_byte_buf_has_allocated_buffer_member [2022-07-12 10:57:05,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_byte_buf_has_allocated_buffer_member [2022-07-12 10:57:05,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 10:57:05,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 10:57:05,118 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-12 10:57:05,118 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-12 10:57:05,118 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-07-12 10:57:05,118 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-07-12 10:57:05,119 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_size_t [2022-07-12 10:57:05,119 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_size_t [2022-07-12 10:57:05,119 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-12 10:57:05,119 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-12 10:57:05,120 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2022-07-12 10:57:05,120 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2022-07-12 10:57:05,120 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 10:57:05,120 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-12 10:57:05,120 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_write [2022-07-12 10:57:05,121 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_write [2022-07-12 10:57:05,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-12 10:57:05,121 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-07-12 10:57:05,121 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-07-12 10:57:05,121 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-07-12 10:57:05,121 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-07-12 10:57:05,121 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_bounded [2022-07-12 10:57:05,121 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_bounded [2022-07-12 10:57:05,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 10:57:05,122 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_buf_equivalence [2022-07-12 10:57:05,122 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_buf_equivalence [2022-07-12 10:57:05,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 10:57:05,382 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 10:57:05,383 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 10:57:06,164 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 10:57:06,171 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 10:57:06,172 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-12 10:57:06,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:57:06 BoogieIcfgContainer [2022-07-12 10:57:06,174 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 10:57:06,177 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 10:57:06,178 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 10:57:06,180 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 10:57:06,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 10:57:03" (1/3) ... [2022-07-12 10:57:06,181 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b3318e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:57:06, skipping insertion in model container [2022-07-12 10:57:06,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:57:04" (2/3) ... [2022-07-12 10:57:06,181 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b3318e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:57:06, skipping insertion in model container [2022-07-12 10:57:06,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:57:06" (3/3) ... [2022-07-12 10:57:06,183 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_write_from_whole_buffer_harness-1.i [2022-07-12 10:57:06,196 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 10:57:06,196 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 10:57:06,249 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:57:06,257 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@2e2fd99a, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6d27fd7d [2022-07-12 10:57:06,257 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 10:57:06,261 INFO L276 IsEmpty]: Start isEmpty. Operand has 187 states, 111 states have (on average 1.2072072072072073) internal successors, (134), 113 states have internal predecessors, (134), 58 states have call successors, (58), 16 states have call predecessors, (58), 16 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2022-07-12 10:57:06,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-07-12 10:57:06,281 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:57:06,283 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:57:06,283 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:57:06,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:57:06,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1514198340, now seen corresponding path program 1 times [2022-07-12 10:57:06,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:57:06,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916247204] [2022-07-12 10:57:06,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:06,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:57:06,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:06,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:57:06,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:06,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:57:06,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:06,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 10:57:06,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:06,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 10:57:06,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:06,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 10:57:06,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:06,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 10:57:06,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:06,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 10:57:06,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:06,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:06,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:06,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:57:06,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:06,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:06,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:06,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:57:06,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:06,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-12 10:57:06,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:06,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 10:57:06,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:06,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 10:57:06,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:06,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 10:57:06,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:06,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:06,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:06,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:57:06,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:06,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:06,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:06,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 10:57:06,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:06,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-12 10:57:06,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:06,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-12 10:57:06,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:07,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-12 10:57:07,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:07,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-12 10:57:07,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:07,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-12 10:57:07,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:07,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 10:57:07,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:07,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-12 10:57:07,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:07,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-12 10:57:07,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:07,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-12 10:57:07,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:07,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-12 10:57:07,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:07,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-07-12 10:57:07,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:07,067 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2022-07-12 10:57:07,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:57:07,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916247204] [2022-07-12 10:57:07,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916247204] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:57:07,068 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:57:07,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 10:57:07,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486213233] [2022-07-12 10:57:07,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:57:07,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:57:07,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:57:07,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:57:07,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:57:07,097 INFO L87 Difference]: Start difference. First operand has 187 states, 111 states have (on average 1.2072072072072073) internal successors, (134), 113 states have internal predecessors, (134), 58 states have call successors, (58), 16 states have call predecessors, (58), 16 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (29), 5 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-07-12 10:57:07,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:57:07,529 INFO L93 Difference]: Finished difference Result 374 states and 536 transitions. [2022-07-12 10:57:07,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:57:07,531 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (29), 5 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 176 [2022-07-12 10:57:07,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:57:07,547 INFO L225 Difference]: With dead ends: 374 [2022-07-12 10:57:07,548 INFO L226 Difference]: Without dead ends: 194 [2022-07-12 10:57:07,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:57:07,555 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 179 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 10:57:07,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 259 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 10:57:07,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2022-07-12 10:57:07,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 182. [2022-07-12 10:57:07,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 107 states have (on average 1.1869158878504673) internal successors, (127), 109 states have internal predecessors, (127), 58 states have call successors, (58), 16 states have call predecessors, (58), 16 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2022-07-12 10:57:07,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 242 transitions. [2022-07-12 10:57:07,591 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 242 transitions. Word has length 176 [2022-07-12 10:57:07,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:57:07,592 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 242 transitions. [2022-07-12 10:57:07,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (29), 5 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-07-12 10:57:07,592 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 242 transitions. [2022-07-12 10:57:07,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-07-12 10:57:07,594 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:57:07,594 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:57:07,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 10:57:07,595 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:57:07,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:57:07,595 INFO L85 PathProgramCache]: Analyzing trace with hash 606096116, now seen corresponding path program 1 times [2022-07-12 10:57:07,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:57:07,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471437341] [2022-07-12 10:57:07,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:07,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:57:07,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:07,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:57:07,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:07,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:57:07,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:07,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 10:57:07,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:07,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 10:57:07,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:07,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 10:57:07,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:07,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 10:57:07,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:07,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 10:57:07,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:07,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:07,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:07,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:57:07,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:07,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:07,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:07,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:57:07,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:07,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-12 10:57:07,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:07,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 10:57:07,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:07,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 10:57:07,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:07,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 10:57:07,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:07,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:07,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:07,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:57:07,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:07,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:07,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:07,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 10:57:07,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:07,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-12 10:57:07,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:07,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-12 10:57:07,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:07,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-12 10:57:07,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:07,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-12 10:57:07,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:07,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-12 10:57:07,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:07,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 10:57:07,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:07,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-12 10:57:07,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:07,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-12 10:57:07,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:07,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-12 10:57:07,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:08,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-12 10:57:08,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:08,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-07-12 10:57:08,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:08,013 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2022-07-12 10:57:08,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:57:08,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471437341] [2022-07-12 10:57:08,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471437341] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:57:08,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094044102] [2022-07-12 10:57:08,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:08,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:57:08,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:57:08,024 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) [2022-07-12 10:57:08,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 10:57:08,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:08,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 3020 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-12 10:57:08,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:57:08,714 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2022-07-12 10:57:08,727 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:57:08,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094044102] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:57:08,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:57:08,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2022-07-12 10:57:08,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101084396] [2022-07-12 10:57:08,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:57:08,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:57:08,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:57:08,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:57:08,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-07-12 10:57:08,731 INFO L87 Difference]: Start difference. First operand 182 states and 242 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2022-07-12 10:57:08,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:57:08,993 INFO L93 Difference]: Finished difference Result 352 states and 472 transitions. [2022-07-12 10:57:08,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 10:57:08,994 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 176 [2022-07-12 10:57:08,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:57:08,996 INFO L225 Difference]: With dead ends: 352 [2022-07-12 10:57:08,996 INFO L226 Difference]: Without dead ends: 185 [2022-07-12 10:57:08,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-07-12 10:57:08,998 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 256 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 10:57:08,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 535 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 10:57:09,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2022-07-12 10:57:09,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2022-07-12 10:57:09,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 109 states have (on average 1.18348623853211) internal successors, (129), 112 states have internal predecessors, (129), 58 states have call successors, (58), 16 states have call predecessors, (58), 17 states have return successors, (64), 57 states have call predecessors, (64), 57 states have call successors, (64) [2022-07-12 10:57:09,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 251 transitions. [2022-07-12 10:57:09,032 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 251 transitions. Word has length 176 [2022-07-12 10:57:09,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:57:09,033 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 251 transitions. [2022-07-12 10:57:09,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2022-07-12 10:57:09,047 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 251 transitions. [2022-07-12 10:57:09,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-07-12 10:57:09,049 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:57:09,049 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:57:09,077 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-12 10:57:09,267 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 [2022-07-12 10:57:09,268 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:57:09,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:57:09,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1545774441, now seen corresponding path program 1 times [2022-07-12 10:57:09,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:57:09,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888375575] [2022-07-12 10:57:09,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:09,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:57:09,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:09,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:57:09,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:09,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:57:09,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:09,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 10:57:09,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:09,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 10:57:09,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:09,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 10:57:09,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:09,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 10:57:09,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:09,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 10:57:09,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:09,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:09,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:09,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:57:09,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:09,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:09,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:09,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:57:09,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:09,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 10:57:09,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:09,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 10:57:09,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:09,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 10:57:09,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:09,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 10:57:09,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:09,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:09,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:09,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:57:09,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:09,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:09,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:09,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-12 10:57:09,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:09,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-12 10:57:09,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:09,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-12 10:57:09,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:09,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-12 10:57:09,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:09,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-12 10:57:09,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:09,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 10:57:09,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:09,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-12 10:57:09,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:09,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-12 10:57:09,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:09,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-12 10:57:09,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:09,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-12 10:57:09,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:09,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 10:57:09,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:09,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-07-12 10:57:09,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:09,734 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2022-07-12 10:57:09,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:57:09,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888375575] [2022-07-12 10:57:09,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888375575] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:57:09,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844584217] [2022-07-12 10:57:09,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:09,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:57:09,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:57:09,738 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) [2022-07-12 10:57:09,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 10:57:10,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:10,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 3037 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-12 10:57:10,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:57:10,298 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 144 proven. 12 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2022-07-12 10:57:10,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:57:10,452 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2022-07-12 10:57:10,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1844584217] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 10:57:10,453 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 10:57:10,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 14 [2022-07-12 10:57:10,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3580090] [2022-07-12 10:57:10,453 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 10:57:10,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:57:10,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:57:10,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:57:10,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:57:10,455 INFO L87 Difference]: Start difference. First operand 185 states and 251 transitions. Second operand has 14 states, 14 states have (on average 6.714285714285714) internal successors, (94), 11 states have internal predecessors, (94), 7 states have call successors, (69), 6 states have call predecessors, (69), 5 states have return successors, (64), 7 states have call predecessors, (64), 7 states have call successors, (64) [2022-07-12 10:57:11,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:57:11,207 INFO L93 Difference]: Finished difference Result 336 states and 456 transitions. [2022-07-12 10:57:11,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 10:57:11,208 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.714285714285714) internal successors, (94), 11 states have internal predecessors, (94), 7 states have call successors, (69), 6 states have call predecessors, (69), 5 states have return successors, (64), 7 states have call predecessors, (64), 7 states have call successors, (64) Word has length 182 [2022-07-12 10:57:11,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:57:11,210 INFO L225 Difference]: With dead ends: 336 [2022-07-12 10:57:11,210 INFO L226 Difference]: Without dead ends: 197 [2022-07-12 10:57:11,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 417 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2022-07-12 10:57:11,211 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 466 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 838 mSolverCounterSat, 401 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 1239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 401 IncrementalHoareTripleChecker+Valid, 838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 10:57:11,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [466 Valid, 388 Invalid, 1239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [401 Valid, 838 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 10:57:11,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2022-07-12 10:57:11,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 185. [2022-07-12 10:57:11,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 109 states have (on average 1.18348623853211) internal successors, (129), 112 states have internal predecessors, (129), 58 states have call successors, (58), 16 states have call predecessors, (58), 17 states have return successors, (62), 57 states have call predecessors, (62), 57 states have call successors, (62) [2022-07-12 10:57:11,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 249 transitions. [2022-07-12 10:57:11,224 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 249 transitions. Word has length 182 [2022-07-12 10:57:11,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:57:11,225 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 249 transitions. [2022-07-12 10:57:11,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.714285714285714) internal successors, (94), 11 states have internal predecessors, (94), 7 states have call successors, (69), 6 states have call predecessors, (69), 5 states have return successors, (64), 7 states have call predecessors, (64), 7 states have call successors, (64) [2022-07-12 10:57:11,225 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 249 transitions. [2022-07-12 10:57:11,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-07-12 10:57:11,227 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:57:11,227 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:57:11,264 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-12 10:57:11,448 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 [2022-07-12 10:57:11,448 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:57:11,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:57:11,449 INFO L85 PathProgramCache]: Analyzing trace with hash 2124831764, now seen corresponding path program 2 times [2022-07-12 10:57:11,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:57:11,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688241245] [2022-07-12 10:57:11,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:11,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:57:11,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:11,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:57:11,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:11,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:57:11,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:11,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 10:57:11,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:11,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 10:57:11,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:11,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 10:57:11,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:11,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 10:57:11,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:11,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 10:57:11,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:11,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:11,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:11,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:57:11,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:11,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:11,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:11,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:57:11,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:11,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 10:57:11,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:11,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 10:57:11,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:11,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 10:57:11,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:11,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 10:57:11,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:11,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:11,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:11,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:57:11,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:11,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:11,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:11,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-12 10:57:11,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:11,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-12 10:57:11,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:11,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-12 10:57:11,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:11,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-12 10:57:11,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:11,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 10:57:11,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:11,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-12 10:57:11,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:11,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-12 10:57:11,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:11,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-12 10:57:11,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:11,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-12 10:57:11,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:11,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 10:57:11,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:11,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-12 10:57:11,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:11,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-07-12 10:57:11,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:11,886 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 4 proven. 38 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2022-07-12 10:57:11,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:57:11,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688241245] [2022-07-12 10:57:11,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688241245] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:57:11,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961371690] [2022-07-12 10:57:11,887 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 10:57:11,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:57:11,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:57:11,901 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) [2022-07-12 10:57:11,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-12 10:57:12,341 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 10:57:12,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 10:57:12,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 3054 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-12 10:57:12,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:57:12,559 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2022-07-12 10:57:12,559 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:57:12,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1961371690] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:57:12,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:57:12,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 20 [2022-07-12 10:57:12,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337406644] [2022-07-12 10:57:12,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:57:12,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 10:57:12,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:57:12,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 10:57:12,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2022-07-12 10:57:12,561 INFO L87 Difference]: Start difference. First operand 185 states and 249 transitions. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 8 states have internal predecessors, (57), 5 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 5 states have call predecessors, (27), 4 states have call successors, (27) [2022-07-12 10:57:12,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:57:12,890 INFO L93 Difference]: Finished difference Result 306 states and 416 transitions. [2022-07-12 10:57:12,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 10:57:12,891 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 8 states have internal predecessors, (57), 5 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 5 states have call predecessors, (27), 4 states have call successors, (27) Word has length 188 [2022-07-12 10:57:12,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:57:12,892 INFO L225 Difference]: With dead ends: 306 [2022-07-12 10:57:12,892 INFO L226 Difference]: Without dead ends: 185 [2022-07-12 10:57:12,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=569, Unknown=0, NotChecked=0, Total=650 [2022-07-12 10:57:12,893 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 279 mSDsluCounter, 956 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 1138 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 10:57:12,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 1138 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 10:57:12,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2022-07-12 10:57:12,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2022-07-12 10:57:12,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 109 states have (on average 1.18348623853211) internal successors, (129), 112 states have internal predecessors, (129), 58 states have call successors, (58), 16 states have call predecessors, (58), 17 states have return successors, (58), 57 states have call predecessors, (58), 57 states have call successors, (58) [2022-07-12 10:57:12,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 245 transitions. [2022-07-12 10:57:12,904 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 245 transitions. Word has length 188 [2022-07-12 10:57:12,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:57:12,905 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 245 transitions. [2022-07-12 10:57:12,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 8 states have internal predecessors, (57), 5 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 5 states have call predecessors, (27), 4 states have call successors, (27) [2022-07-12 10:57:12,905 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 245 transitions. [2022-07-12 10:57:12,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-07-12 10:57:12,907 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:57:12,907 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:57:12,936 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-12 10:57:13,128 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 [2022-07-12 10:57:13,129 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:57:13,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:57:13,129 INFO L85 PathProgramCache]: Analyzing trace with hash -806726443, now seen corresponding path program 3 times [2022-07-12 10:57:13,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:57:13,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062601940] [2022-07-12 10:57:13,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:13,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:57:13,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:13,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:57:13,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:13,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:57:13,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:13,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 10:57:13,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:13,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 10:57:13,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:13,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 10:57:13,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:13,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 10:57:13,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:13,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 10:57:13,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:13,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:13,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:13,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:57:13,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:13,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:13,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:13,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:57:13,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:13,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 10:57:13,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:13,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 10:57:13,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:13,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 10:57:13,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:13,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 10:57:13,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:13,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:13,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:13,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:57:13,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:13,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:13,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:13,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-12 10:57:13,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:13,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-12 10:57:13,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:13,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-12 10:57:13,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:13,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-12 10:57:13,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:13,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 10:57:13,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:13,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-12 10:57:13,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:13,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-12 10:57:13,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:13,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-07-12 10:57:13,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:13,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 10:57:13,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:13,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-07-12 10:57:13,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:13,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-07-12 10:57:13,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:13,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-07-12 10:57:13,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:13,419 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2022-07-12 10:57:13,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:57:13,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062601940] [2022-07-12 10:57:13,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062601940] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:57:13,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386699330] [2022-07-12 10:57:13,420 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-12 10:57:13,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:57:13,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:57:13,421 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) [2022-07-12 10:57:13,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-12 10:57:13,880 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-07-12 10:57:13,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 10:57:13,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 2325 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-12 10:57:13,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:57:13,944 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2022-07-12 10:57:13,944 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:57:13,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386699330] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:57:13,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:57:13,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2022-07-12 10:57:13,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534915725] [2022-07-12 10:57:13,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:57:13,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 10:57:13,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:57:13,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 10:57:13,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:57:13,946 INFO L87 Difference]: Start difference. First operand 185 states and 245 transitions. Second operand has 8 states, 7 states have (on average 8.142857142857142) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) [2022-07-12 10:57:14,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:57:14,017 INFO L93 Difference]: Finished difference Result 197 states and 265 transitions. [2022-07-12 10:57:14,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 10:57:14,018 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.142857142857142) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) Word has length 206 [2022-07-12 10:57:14,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:57:14,019 INFO L225 Difference]: With dead ends: 197 [2022-07-12 10:57:14,019 INFO L226 Difference]: Without dead ends: 195 [2022-07-12 10:57:14,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2022-07-12 10:57:14,020 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 22 mSDsluCounter, 1389 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 1630 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 10:57:14,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 1630 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 10:57:14,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2022-07-12 10:57:14,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 194. [2022-07-12 10:57:14,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 115 states have (on average 1.173913043478261) internal successors, (135), 119 states have internal predecessors, (135), 59 states have call successors, (59), 17 states have call predecessors, (59), 19 states have return successors, (68), 58 states have call predecessors, (68), 58 states have call successors, (68) [2022-07-12 10:57:14,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 262 transitions. [2022-07-12 10:57:14,031 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 262 transitions. Word has length 206 [2022-07-12 10:57:14,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:57:14,032 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 262 transitions. [2022-07-12 10:57:14,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.142857142857142) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) [2022-07-12 10:57:14,032 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 262 transitions. [2022-07-12 10:57:14,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-07-12 10:57:14,034 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:57:14,034 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:57:14,076 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-12 10:57:14,253 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 [2022-07-12 10:57:14,254 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:57:14,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:57:14,254 INFO L85 PathProgramCache]: Analyzing trace with hash 2116281437, now seen corresponding path program 1 times [2022-07-12 10:57:14,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:57:14,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973558335] [2022-07-12 10:57:14,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:14,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:57:14,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:14,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:57:14,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:14,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:57:14,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:14,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 10:57:14,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:14,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 10:57:14,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:14,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 10:57:14,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:14,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 10:57:14,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:14,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 10:57:14,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:14,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:14,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:14,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:57:14,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:14,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:14,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:14,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:57:14,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:14,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 10:57:14,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:14,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 10:57:14,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:14,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 10:57:14,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:14,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 10:57:14,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:14,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:14,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:14,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:57:14,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:14,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:14,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:14,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-12 10:57:14,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:14,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-12 10:57:14,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:14,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-12 10:57:14,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:14,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-12 10:57:14,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:14,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 10:57:14,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:14,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-12 10:57:14,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:14,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-12 10:57:14,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:14,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-07-12 10:57:14,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:14,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 10:57:14,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:14,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-07-12 10:57:14,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:14,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-07-12 10:57:14,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:14,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-07-12 10:57:14,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:14,573 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2022-07-12 10:57:14,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:57:14,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973558335] [2022-07-12 10:57:14,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973558335] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:57:14,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105654392] [2022-07-12 10:57:14,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:14,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:57:14,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:57:14,576 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) [2022-07-12 10:57:14,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-12 10:57:15,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:15,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 3117 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-12 10:57:15,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:57:15,316 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 164 proven. 56 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-07-12 10:57:15,316 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:57:15,480 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2022-07-12 10:57:15,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [105654392] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 10:57:15,480 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 10:57:15,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 14 [2022-07-12 10:57:15,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847899610] [2022-07-12 10:57:15,481 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 10:57:15,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:57:15,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:57:15,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:57:15,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:57:15,482 INFO L87 Difference]: Start difference. First operand 194 states and 262 transitions. Second operand has 14 states, 14 states have (on average 10.142857142857142) internal successors, (142), 11 states have internal predecessors, (142), 7 states have call successors, (76), 6 states have call predecessors, (76), 5 states have return successors, (73), 7 states have call predecessors, (73), 7 states have call successors, (73) [2022-07-12 10:57:16,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:57:16,111 INFO L93 Difference]: Finished difference Result 333 states and 446 transitions. [2022-07-12 10:57:16,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 10:57:16,112 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 10.142857142857142) internal successors, (142), 11 states have internal predecessors, (142), 7 states have call successors, (76), 6 states have call predecessors, (76), 5 states have return successors, (73), 7 states have call predecessors, (73), 7 states have call successors, (73) Word has length 210 [2022-07-12 10:57:16,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:57:16,113 INFO L225 Difference]: With dead ends: 333 [2022-07-12 10:57:16,113 INFO L226 Difference]: Without dead ends: 203 [2022-07-12 10:57:16,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 474 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2022-07-12 10:57:16,114 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 276 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 741 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 10:57:16,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 447 Invalid, 922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 741 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 10:57:16,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-07-12 10:57:16,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 191. [2022-07-12 10:57:16,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 113 states have (on average 1.168141592920354) internal successors, (132), 116 states have internal predecessors, (132), 59 states have call successors, (59), 17 states have call predecessors, (59), 18 states have return successors, (67), 58 states have call predecessors, (67), 58 states have call successors, (67) [2022-07-12 10:57:16,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 258 transitions. [2022-07-12 10:57:16,124 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 258 transitions. Word has length 210 [2022-07-12 10:57:16,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:57:16,124 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 258 transitions. [2022-07-12 10:57:16,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.142857142857142) internal successors, (142), 11 states have internal predecessors, (142), 7 states have call successors, (76), 6 states have call predecessors, (76), 5 states have return successors, (73), 7 states have call predecessors, (73), 7 states have call successors, (73) [2022-07-12 10:57:16,125 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 258 transitions. [2022-07-12 10:57:16,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2022-07-12 10:57:16,126 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:57:16,126 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:57:16,149 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-12 10:57:16,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:57:16,347 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:57:16,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:57:16,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1227624248, now seen corresponding path program 1 times [2022-07-12 10:57:16,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:57:16,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727798985] [2022-07-12 10:57:16,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:16,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:57:16,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:16,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:57:16,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:16,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:57:16,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:16,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 10:57:16,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:16,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 10:57:16,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:16,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 10:57:16,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:16,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 10:57:16,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:16,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 10:57:16,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:16,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:16,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:16,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:57:16,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:16,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:16,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:16,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:57:16,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:16,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 10:57:16,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:16,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 10:57:16,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:16,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 10:57:16,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:16,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 10:57:16,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:16,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:16,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:16,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:57:16,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:16,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:16,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:16,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-12 10:57:16,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:16,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-12 10:57:16,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:16,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-12 10:57:16,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:16,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-12 10:57:16,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:16,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 10:57:16,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:16,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-12 10:57:16,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:16,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-12 10:57:16,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:16,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-07-12 10:57:16,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:16,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-12 10:57:16,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:16,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-07-12 10:57:16,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:16,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-07-12 10:57:16,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:16,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-07-12 10:57:16,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:16,866 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 341 trivial. 0 not checked. [2022-07-12 10:57:16,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:57:16,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727798985] [2022-07-12 10:57:16,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727798985] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:57:16,866 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:57:16,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 10:57:16,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463844288] [2022-07-12 10:57:16,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:57:16,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 10:57:16,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:57:16,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 10:57:16,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-12 10:57:16,868 INFO L87 Difference]: Start difference. First operand 191 states and 258 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (29), 5 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) [2022-07-12 10:57:17,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:57:17,708 INFO L93 Difference]: Finished difference Result 404 states and 564 transitions. [2022-07-12 10:57:17,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 10:57:17,708 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (29), 5 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) Word has length 216 [2022-07-12 10:57:17,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:57:17,709 INFO L225 Difference]: With dead ends: 404 [2022-07-12 10:57:17,709 INFO L226 Difference]: Without dead ends: 228 [2022-07-12 10:57:17,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2022-07-12 10:57:17,711 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 260 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 674 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 10:57:17,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 443 Invalid, 823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 674 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-12 10:57:17,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2022-07-12 10:57:17,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 196. [2022-07-12 10:57:17,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 118 states have (on average 1.1779661016949152) internal successors, (139), 121 states have internal predecessors, (139), 59 states have call successors, (59), 17 states have call predecessors, (59), 18 states have return successors, (67), 58 states have call predecessors, (67), 58 states have call successors, (67) [2022-07-12 10:57:17,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 265 transitions. [2022-07-12 10:57:17,723 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 265 transitions. Word has length 216 [2022-07-12 10:57:17,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:57:17,724 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 265 transitions. [2022-07-12 10:57:17,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (29), 5 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) [2022-07-12 10:57:17,724 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 265 transitions. [2022-07-12 10:57:17,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2022-07-12 10:57:17,726 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:57:17,726 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:57:17,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 10:57:17,726 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:57:17,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:57:17,726 INFO L85 PathProgramCache]: Analyzing trace with hash -969458810, now seen corresponding path program 1 times [2022-07-12 10:57:17,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:57:17,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723626938] [2022-07-12 10:57:17,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:17,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:57:17,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:18,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:57:18,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:18,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:57:18,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:18,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 10:57:18,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:18,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 10:57:18,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:18,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 10:57:18,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:18,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 10:57:18,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:18,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 10:57:18,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:18,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:18,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:18,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:57:18,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:18,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:18,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:18,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:57:18,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:18,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 10:57:18,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:18,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 10:57:18,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:18,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 10:57:18,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:18,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 10:57:18,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:18,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:18,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:18,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:57:18,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:18,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:18,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:18,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-12 10:57:18,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:18,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-12 10:57:18,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:18,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-12 10:57:18,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:18,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-12 10:57:18,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:18,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 10:57:18,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:18,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-12 10:57:18,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:18,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-12 10:57:18,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:18,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-07-12 10:57:18,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:18,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-12 10:57:18,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:18,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-07-12 10:57:18,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:18,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-07-12 10:57:18,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:18,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-07-12 10:57:18,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:18,380 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 60 proven. 20 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2022-07-12 10:57:18,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:57:18,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723626938] [2022-07-12 10:57:18,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723626938] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:57:18,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967424871] [2022-07-12 10:57:18,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:18,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:57:18,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:57:18,382 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) [2022-07-12 10:57:18,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-12 10:57:18,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:18,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 3129 conjuncts, 30 conjunts are in the unsatisfiable core [2022-07-12 10:57:18,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:57:18,962 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-12 10:57:19,193 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2022-07-12 10:57:19,194 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:57:19,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1967424871] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:57:19,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:57:19,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [15] total 26 [2022-07-12 10:57:19,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16470766] [2022-07-12 10:57:19,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:57:19,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-12 10:57:19,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:57:19,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-12 10:57:19,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=586, Unknown=0, NotChecked=0, Total=650 [2022-07-12 10:57:19,195 INFO L87 Difference]: Start difference. First operand 196 states and 265 transitions. Second operand has 13 states, 12 states have (on average 6.833333333333333) internal successors, (82), 10 states have internal predecessors, (82), 5 states have call successors, (32), 3 states have call predecessors, (32), 5 states have return successors, (30), 6 states have call predecessors, (30), 5 states have call successors, (30) [2022-07-12 10:57:19,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:57:19,349 INFO L93 Difference]: Finished difference Result 400 states and 535 transitions. [2022-07-12 10:57:19,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-12 10:57:19,350 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 6.833333333333333) internal successors, (82), 10 states have internal predecessors, (82), 5 states have call successors, (32), 3 states have call predecessors, (32), 5 states have return successors, (30), 6 states have call predecessors, (30), 5 states have call successors, (30) Word has length 216 [2022-07-12 10:57:19,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:57:19,351 INFO L225 Difference]: With dead ends: 400 [2022-07-12 10:57:19,351 INFO L226 Difference]: Without dead ends: 215 [2022-07-12 10:57:19,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=634, Unknown=0, NotChecked=0, Total=702 [2022-07-12 10:57:19,352 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 25 mSDsluCounter, 2099 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 2332 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 159 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 10:57:19,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 2332 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 119 Invalid, 0 Unknown, 159 Unchecked, 0.1s Time] [2022-07-12 10:57:19,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2022-07-12 10:57:19,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2022-07-12 10:57:19,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 136 states have (on average 1.1911764705882353) internal successors, (162), 139 states have internal predecessors, (162), 59 states have call successors, (59), 18 states have call predecessors, (59), 19 states have return successors, (67), 58 states have call predecessors, (67), 58 states have call successors, (67) [2022-07-12 10:57:19,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 288 transitions. [2022-07-12 10:57:19,361 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 288 transitions. Word has length 216 [2022-07-12 10:57:19,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:57:19,362 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 288 transitions. [2022-07-12 10:57:19,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 6.833333333333333) internal successors, (82), 10 states have internal predecessors, (82), 5 states have call successors, (32), 3 states have call predecessors, (32), 5 states have return successors, (30), 6 states have call predecessors, (30), 5 states have call successors, (30) [2022-07-12 10:57:19,362 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 288 transitions. [2022-07-12 10:57:19,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2022-07-12 10:57:19,364 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:57:19,364 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:57:19,411 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-12 10:57:19,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:57:19,580 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:57:19,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:57:19,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1130279620, now seen corresponding path program 1 times [2022-07-12 10:57:19,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:57:19,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051056484] [2022-07-12 10:57:19,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:19,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:57:19,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:19,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:57:19,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:19,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:57:19,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:19,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 10:57:19,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:19,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 10:57:19,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:19,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 10:57:19,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:19,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 10:57:19,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:19,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 10:57:19,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:19,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:19,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:19,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:57:19,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:19,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:19,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:19,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:57:19,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:19,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 10:57:19,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:19,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 10:57:19,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:19,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 10:57:19,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:19,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 10:57:19,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:19,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:19,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:19,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:57:19,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:19,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:19,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:19,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-12 10:57:19,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:19,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-12 10:57:19,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:19,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-12 10:57:19,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:19,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-12 10:57:19,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:19,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 10:57:19,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:19,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-12 10:57:19,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:19,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-12 10:57:19,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:19,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-07-12 10:57:19,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:19,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-12 10:57:19,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:19,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-07-12 10:57:19,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:19,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-07-12 10:57:19,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:19,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-07-12 10:57:19,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:19,846 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2022-07-12 10:57:19,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:57:19,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051056484] [2022-07-12 10:57:19,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051056484] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:57:19,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035286546] [2022-07-12 10:57:19,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:19,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:57:19,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:57:19,849 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) [2022-07-12 10:57:19,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-12 10:57:20,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:20,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 3124 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 10:57:20,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:57:20,393 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 118 proven. 0 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2022-07-12 10:57:20,393 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:57:20,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035286546] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:57:20,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:57:20,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 7 [2022-07-12 10:57:20,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757989097] [2022-07-12 10:57:20,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:57:20,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 10:57:20,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:57:20,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 10:57:20,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:57:20,397 INFO L87 Difference]: Start difference. First operand 215 states and 288 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-07-12 10:57:20,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:57:20,419 INFO L93 Difference]: Finished difference Result 409 states and 556 transitions. [2022-07-12 10:57:20,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:57:20,420 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 216 [2022-07-12 10:57:20,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:57:20,422 INFO L225 Difference]: With dead ends: 409 [2022-07-12 10:57:20,422 INFO L226 Difference]: Without dead ends: 224 [2022-07-12 10:57:20,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-12 10:57:20,423 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 20 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 715 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 10:57:20,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 715 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 10:57:20,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2022-07-12 10:57:20,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 207. [2022-07-12 10:57:20,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 129 states have (on average 1.186046511627907) internal successors, (153), 131 states have internal predecessors, (153), 59 states have call successors, (59), 18 states have call predecessors, (59), 18 states have return successors, (66), 58 states have call predecessors, (66), 58 states have call successors, (66) [2022-07-12 10:57:20,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 278 transitions. [2022-07-12 10:57:20,433 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 278 transitions. Word has length 216 [2022-07-12 10:57:20,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:57:20,433 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 278 transitions. [2022-07-12 10:57:20,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-07-12 10:57:20,433 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 278 transitions. [2022-07-12 10:57:20,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2022-07-12 10:57:20,435 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:57:20,435 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:57:20,456 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-07-12 10:57:20,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:57:20,656 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:57:20,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:57:20,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1998809472, now seen corresponding path program 2 times [2022-07-12 10:57:20,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:57:20,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291088158] [2022-07-12 10:57:20,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:20,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:57:20,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:20,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:57:20,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:20,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:57:20,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:20,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 10:57:20,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:20,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 10:57:20,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:20,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 10:57:20,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:20,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 10:57:20,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:20,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 10:57:20,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:20,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:20,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:20,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:57:20,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:20,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:20,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:20,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:57:20,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:20,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 10:57:20,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:20,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 10:57:20,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:20,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-12 10:57:20,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:20,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-12 10:57:20,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:20,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:20,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:20,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:57:20,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:20,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:20,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:20,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-12 10:57:20,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:21,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-12 10:57:21,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:21,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-12 10:57:21,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:21,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-12 10:57:21,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:21,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-12 10:57:21,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:21,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-07-12 10:57:21,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:21,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-07-12 10:57:21,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:21,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-07-12 10:57:21,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:21,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-12 10:57:21,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:21,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-07-12 10:57:21,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:21,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-07-12 10:57:21,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:21,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-07-12 10:57:21,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:21,064 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 6 proven. 42 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2022-07-12 10:57:21,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:57:21,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291088158] [2022-07-12 10:57:21,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291088158] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:57:21,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736056517] [2022-07-12 10:57:21,065 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 10:57:21,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:57:21,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:57:21,066 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) [2022-07-12 10:57:21,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-12 10:57:22,048 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 10:57:22,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 10:57:22,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 3136 conjuncts, 38 conjunts are in the unsatisfiable core [2022-07-12 10:57:22,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:57:22,176 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-12 10:57:22,397 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 212 proven. 0 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2022-07-12 10:57:22,397 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:57:22,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736056517] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:57:22,397 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:57:22,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [12] total 23 [2022-07-12 10:57:22,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678872902] [2022-07-12 10:57:22,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:57:22,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-12 10:57:22,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:57:22,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-12 10:57:22,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2022-07-12 10:57:22,398 INFO L87 Difference]: Start difference. First operand 207 states and 278 transitions. Second operand has 13 states, 12 states have (on average 7.583333333333333) internal successors, (91), 10 states have internal predecessors, (91), 5 states have call successors, (31), 3 states have call predecessors, (31), 5 states have return successors, (29), 6 states have call predecessors, (29), 5 states have call successors, (29) [2022-07-12 10:57:22,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:57:22,499 INFO L93 Difference]: Finished difference Result 387 states and 519 transitions. [2022-07-12 10:57:22,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-12 10:57:22,499 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 7.583333333333333) internal successors, (91), 10 states have internal predecessors, (91), 5 states have call successors, (31), 3 states have call predecessors, (31), 5 states have return successors, (29), 6 states have call predecessors, (29), 5 states have call successors, (29) Word has length 220 [2022-07-12 10:57:22,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:57:22,501 INFO L225 Difference]: With dead ends: 387 [2022-07-12 10:57:22,501 INFO L226 Difference]: Without dead ends: 229 [2022-07-12 10:57:22,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=494, Unknown=0, NotChecked=0, Total=552 [2022-07-12 10:57:22,502 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 24 mSDsluCounter, 1542 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 1792 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 116 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 10:57:22,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 1792 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 116 Unchecked, 0.1s Time] [2022-07-12 10:57:22,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2022-07-12 10:57:22,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 207. [2022-07-12 10:57:22,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 129 states have (on average 1.186046511627907) internal successors, (153), 131 states have internal predecessors, (153), 59 states have call successors, (59), 18 states have call predecessors, (59), 18 states have return successors, (65), 58 states have call predecessors, (65), 58 states have call successors, (65) [2022-07-12 10:57:22,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 277 transitions. [2022-07-12 10:57:22,511 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 277 transitions. Word has length 220 [2022-07-12 10:57:22,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:57:22,511 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 277 transitions. [2022-07-12 10:57:22,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 7.583333333333333) internal successors, (91), 10 states have internal predecessors, (91), 5 states have call successors, (31), 3 states have call predecessors, (31), 5 states have return successors, (29), 6 states have call predecessors, (29), 5 states have call successors, (29) [2022-07-12 10:57:22,512 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 277 transitions. [2022-07-12 10:57:22,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2022-07-12 10:57:22,513 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:57:22,513 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:57:22,541 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-12 10:57:22,726 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,SelfDestructingSolverStorable9 [2022-07-12 10:57:22,726 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:57:22,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:57:22,727 INFO L85 PathProgramCache]: Analyzing trace with hash 2120990534, now seen corresponding path program 3 times [2022-07-12 10:57:22,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:57:22,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656611351] [2022-07-12 10:57:22,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:22,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:57:22,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:22,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:57:22,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:22,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:57:22,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:22,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 10:57:22,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:22,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 10:57:22,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:22,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 10:57:22,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:22,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 10:57:22,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:22,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 10:57:22,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:22,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:22,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:22,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:57:22,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:22,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:22,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:22,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:57:22,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:22,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 10:57:22,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:22,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 10:57:22,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:22,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-12 10:57:22,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:22,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-12 10:57:22,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:22,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:22,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:22,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:57:22,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:23,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:23,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:23,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-12 10:57:23,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:23,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-12 10:57:23,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:23,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-12 10:57:23,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:23,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-07-12 10:57:23,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:23,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-12 10:57:23,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:23,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-12 10:57:23,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:23,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-12 10:57:23,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:23,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-12 10:57:23,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:23,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-07-12 10:57:23,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:23,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-07-12 10:57:23,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:23,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-07-12 10:57:23,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:23,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-07-12 10:57:23,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:23,067 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 6 proven. 43 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2022-07-12 10:57:23,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:57:23,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656611351] [2022-07-12 10:57:23,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656611351] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:57:23,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868143719] [2022-07-12 10:57:23,068 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-12 10:57:23,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:57:23,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:57:23,084 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) [2022-07-12 10:57:23,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-12 10:57:24,194 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-07-12 10:57:24,194 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 10:57:24,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 2573 conjuncts, 30 conjunts are in the unsatisfiable core [2022-07-12 10:57:24,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:57:24,752 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 163 proven. 4 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2022-07-12 10:57:24,752 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:57:25,124 INFO L356 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2022-07-12 10:57:25,124 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2022-07-12 10:57:25,130 INFO L356 Elim1Store]: treesize reduction 14, result has 6.7 percent of original size [2022-07-12 10:57:25,131 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 12 [2022-07-12 10:57:25,215 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 88 proven. 10 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2022-07-12 10:57:25,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [868143719] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 10:57:25,215 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 10:57:25,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 11] total 28 [2022-07-12 10:57:25,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731480469] [2022-07-12 10:57:25,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 10:57:25,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-07-12 10:57:25,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:57:25,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-07-12 10:57:25,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=672, Unknown=0, NotChecked=0, Total=756 [2022-07-12 10:57:25,217 INFO L87 Difference]: Start difference. First operand 207 states and 277 transitions. Second operand has 28 states, 27 states have (on average 4.592592592592593) internal successors, (124), 24 states have internal predecessors, (124), 4 states have call successors, (51), 6 states have call predecessors, (51), 7 states have return successors, (47), 4 states have call predecessors, (47), 4 states have call successors, (47) [2022-07-12 10:57:28,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:57:28,502 INFO L93 Difference]: Finished difference Result 505 states and 694 transitions. [2022-07-12 10:57:28,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-07-12 10:57:28,503 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 4.592592592592593) internal successors, (124), 24 states have internal predecessors, (124), 4 states have call successors, (51), 6 states have call predecessors, (51), 7 states have return successors, (47), 4 states have call predecessors, (47), 4 states have call successors, (47) Word has length 224 [2022-07-12 10:57:28,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:57:28,504 INFO L225 Difference]: With dead ends: 505 [2022-07-12 10:57:28,504 INFO L226 Difference]: Without dead ends: 304 [2022-07-12 10:57:28,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 570 GetRequests, 494 SyntacticMatches, 8 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1052 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=781, Invalid=4049, Unknown=0, NotChecked=0, Total=4830 [2022-07-12 10:57:28,506 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 615 mSDsluCounter, 975 mSDsCounter, 0 mSdLazyCounter, 3041 mSolverCounterSat, 302 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 640 SdHoareTripleChecker+Valid, 1180 SdHoareTripleChecker+Invalid, 3763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 302 IncrementalHoareTripleChecker+Valid, 3041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 420 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-12 10:57:28,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [640 Valid, 1180 Invalid, 3763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [302 Valid, 3041 Invalid, 0 Unknown, 420 Unchecked, 1.6s Time] [2022-07-12 10:57:28,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2022-07-12 10:57:28,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 251. [2022-07-12 10:57:28,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 166 states have (on average 1.1927710843373494) internal successors, (198), 170 states have internal predecessors, (198), 62 states have call successors, (62), 20 states have call predecessors, (62), 22 states have return successors, (84), 61 states have call predecessors, (84), 61 states have call successors, (84) [2022-07-12 10:57:28,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 344 transitions. [2022-07-12 10:57:28,517 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 344 transitions. Word has length 224 [2022-07-12 10:57:28,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:57:28,517 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 344 transitions. [2022-07-12 10:57:28,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 4.592592592592593) internal successors, (124), 24 states have internal predecessors, (124), 4 states have call successors, (51), 6 states have call predecessors, (51), 7 states have return successors, (47), 4 states have call predecessors, (47), 4 states have call successors, (47) [2022-07-12 10:57:28,518 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 344 transitions. [2022-07-12 10:57:28,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2022-07-12 10:57:28,519 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:57:28,519 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:57:28,560 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-12 10:57:28,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:57:28,720 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:57:28,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:57:28,720 INFO L85 PathProgramCache]: Analyzing trace with hash 490308611, now seen corresponding path program 1 times [2022-07-12 10:57:28,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:57:28,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734627252] [2022-07-12 10:57:28,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:28,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:57:28,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:28,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:57:28,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:28,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:57:28,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:28,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 10:57:28,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:28,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 10:57:28,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:28,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 10:57:28,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:28,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 10:57:28,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:28,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 10:57:28,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:28,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:28,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:28,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:57:28,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:28,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:28,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:28,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:57:28,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:28,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 10:57:28,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:28,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 10:57:28,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:28,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 10:57:28,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:28,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 10:57:28,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:28,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:28,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:28,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:57:28,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:28,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:28,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:28,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-12 10:57:28,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:28,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-12 10:57:28,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:28,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-12 10:57:28,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:28,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-12 10:57:28,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:28,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-12 10:57:28,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:28,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-07-12 10:57:28,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:28,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-07-12 10:57:28,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:28,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-07-12 10:57:28,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:28,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-12 10:57:28,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:28,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-07-12 10:57:28,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:28,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-07-12 10:57:28,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:28,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-12 10:57:28,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:28,983 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2022-07-12 10:57:28,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:57:28,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734627252] [2022-07-12 10:57:28,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734627252] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:57:28,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936840969] [2022-07-12 10:57:28,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:28,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:57:28,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:57:28,985 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) [2022-07-12 10:57:28,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-12 10:57:29,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:29,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 3143 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 10:57:29,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:57:29,532 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2022-07-12 10:57:29,532 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:57:29,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936840969] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:57:29,532 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:57:29,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 7 [2022-07-12 10:57:29,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390726239] [2022-07-12 10:57:29,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:57:29,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 10:57:29,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:57:29,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 10:57:29,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:57:29,533 INFO L87 Difference]: Start difference. First operand 251 states and 344 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-07-12 10:57:29,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:57:29,562 INFO L93 Difference]: Finished difference Result 500 states and 691 transitions. [2022-07-12 10:57:29,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:57:29,563 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 226 [2022-07-12 10:57:29,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:57:29,564 INFO L225 Difference]: With dead ends: 500 [2022-07-12 10:57:29,564 INFO L226 Difference]: Without dead ends: 264 [2022-07-12 10:57:29,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-12 10:57:29,565 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 9 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 10:57:29,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 708 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 10:57:29,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2022-07-12 10:57:29,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 255. [2022-07-12 10:57:29,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 170 states have (on average 1.188235294117647) internal successors, (202), 174 states have internal predecessors, (202), 62 states have call successors, (62), 20 states have call predecessors, (62), 22 states have return successors, (84), 61 states have call predecessors, (84), 61 states have call successors, (84) [2022-07-12 10:57:29,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 348 transitions. [2022-07-12 10:57:29,587 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 348 transitions. Word has length 226 [2022-07-12 10:57:29,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:57:29,587 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 348 transitions. [2022-07-12 10:57:29,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-07-12 10:57:29,588 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 348 transitions. [2022-07-12 10:57:29,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2022-07-12 10:57:29,589 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:57:29,589 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:57:29,611 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-12 10:57:29,789 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,SelfDestructingSolverStorable11 [2022-07-12 10:57:29,789 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:57:29,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:57:29,790 INFO L85 PathProgramCache]: Analyzing trace with hash 910460735, now seen corresponding path program 1 times [2022-07-12 10:57:29,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:57:29,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305647007] [2022-07-12 10:57:29,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:29,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:57:29,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:29,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:57:29,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:29,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:57:29,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:29,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 10:57:29,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:29,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 10:57:29,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:29,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 10:57:29,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:29,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 10:57:29,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:29,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 10:57:29,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:29,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:29,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:29,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:57:29,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:29,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:29,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:29,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:57:29,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:29,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 10:57:29,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:29,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 10:57:29,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:29,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 10:57:29,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:29,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 10:57:29,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:29,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:29,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:29,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:57:29,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:29,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:29,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:29,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-12 10:57:29,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:29,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-12 10:57:29,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:29,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-12 10:57:29,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:29,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-12 10:57:29,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:29,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-12 10:57:29,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:30,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-07-12 10:57:30,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:30,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-07-12 10:57:30,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:30,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-07-12 10:57:30,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:30,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-12 10:57:30,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:30,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-07-12 10:57:30,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:30,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-07-12 10:57:30,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:30,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-12 10:57:30,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:30,026 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2022-07-12 10:57:30,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:57:30,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305647007] [2022-07-12 10:57:30,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305647007] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:57:30,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375656513] [2022-07-12 10:57:30,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:30,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:57:30,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:57:30,028 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) [2022-07-12 10:57:30,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-12 10:57:30,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:30,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 3145 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 10:57:30,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:57:30,571 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2022-07-12 10:57:30,572 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:57:30,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [375656513] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:57:30,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:57:30,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 7 [2022-07-12 10:57:30,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277611256] [2022-07-12 10:57:30,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:57:30,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 10:57:30,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:57:30,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 10:57:30,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:57:30,573 INFO L87 Difference]: Start difference. First operand 255 states and 348 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-07-12 10:57:30,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:57:30,610 INFO L93 Difference]: Finished difference Result 507 states and 704 transitions. [2022-07-12 10:57:30,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:57:30,610 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 226 [2022-07-12 10:57:30,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:57:30,614 INFO L225 Difference]: With dead ends: 507 [2022-07-12 10:57:30,614 INFO L226 Difference]: Without dead ends: 267 [2022-07-12 10:57:30,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-12 10:57:30,615 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 26 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 723 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 10:57:30,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 723 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 10:57:30,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2022-07-12 10:57:30,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 247. [2022-07-12 10:57:30,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 163 states have (on average 1.1717791411042944) internal successors, (191), 166 states have internal predecessors, (191), 62 states have call successors, (62), 20 states have call predecessors, (62), 21 states have return successors, (77), 61 states have call predecessors, (77), 61 states have call successors, (77) [2022-07-12 10:57:30,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 330 transitions. [2022-07-12 10:57:30,625 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 330 transitions. Word has length 226 [2022-07-12 10:57:30,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:57:30,625 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 330 transitions. [2022-07-12 10:57:30,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-07-12 10:57:30,626 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 330 transitions. [2022-07-12 10:57:30,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2022-07-12 10:57:30,627 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:57:30,627 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:57:30,649 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-07-12 10:57:30,843 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,SelfDestructingSolverStorable12 [2022-07-12 10:57:30,843 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:57:30,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:57:30,844 INFO L85 PathProgramCache]: Analyzing trace with hash 220629245, now seen corresponding path program 2 times [2022-07-12 10:57:30,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:57:30,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147374261] [2022-07-12 10:57:30,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:30,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:57:30,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:31,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:57:31,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:31,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:57:31,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:31,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 10:57:31,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:31,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 10:57:31,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:31,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 10:57:31,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:31,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 10:57:31,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:31,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 10:57:31,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:31,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:31,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:31,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:57:31,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:31,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:31,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:31,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:57:31,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:31,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 10:57:31,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:31,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 10:57:31,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:31,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 10:57:31,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:31,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 10:57:31,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:31,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:31,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:31,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:57:31,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:31,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:31,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:31,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-12 10:57:31,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:31,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-12 10:57:31,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:31,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-12 10:57:31,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:31,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-12 10:57:31,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:31,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-12 10:57:31,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:31,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-07-12 10:57:31,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:31,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-07-12 10:57:31,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:31,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-07-12 10:57:31,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:31,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-12 10:57:31,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:31,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-07-12 10:57:31,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:31,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-07-12 10:57:31,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:31,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-12 10:57:31,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:31,272 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 20 proven. 29 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2022-07-12 10:57:31,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:57:31,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147374261] [2022-07-12 10:57:31,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147374261] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:57:31,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875730561] [2022-07-12 10:57:31,273 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 10:57:31,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:57:31,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:57:31,274 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) [2022-07-12 10:57:31,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-12 10:57:31,826 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 10:57:31,826 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 10:57:31,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 3140 conjuncts, 56 conjunts are in the unsatisfiable core [2022-07-12 10:57:31,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:57:31,930 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-12 10:57:32,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:57:32,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:57:32,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:57:32,127 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 32 [2022-07-12 10:57:32,129 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 22 treesize of output 14 [2022-07-12 10:57:32,425 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 286 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-07-12 10:57:32,425 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:57:32,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1875730561] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:57:32,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:57:32,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [12] total 26 [2022-07-12 10:57:32,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864799869] [2022-07-12 10:57:32,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:57:32,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-12 10:57:32,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:57:32,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-12 10:57:32,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=584, Unknown=0, NotChecked=0, Total=650 [2022-07-12 10:57:32,426 INFO L87 Difference]: Start difference. First operand 247 states and 330 transitions. Second operand has 16 states, 15 states have (on average 7.466666666666667) internal successors, (112), 15 states have internal predecessors, (112), 7 states have call successors, (31), 4 states have call predecessors, (31), 7 states have return successors, (29), 7 states have call predecessors, (29), 7 states have call successors, (29) [2022-07-12 10:57:33,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:57:33,290 INFO L93 Difference]: Finished difference Result 512 states and 702 transitions. [2022-07-12 10:57:33,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:57:33,291 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 7.466666666666667) internal successors, (112), 15 states have internal predecessors, (112), 7 states have call successors, (31), 4 states have call predecessors, (31), 7 states have return successors, (29), 7 states have call predecessors, (29), 7 states have call successors, (29) Word has length 226 [2022-07-12 10:57:33,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:57:33,294 INFO L225 Difference]: With dead ends: 512 [2022-07-12 10:57:33,294 INFO L226 Difference]: Without dead ends: 335 [2022-07-12 10:57:33,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 264 SyntacticMatches, 8 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=106, Invalid=1016, Unknown=0, NotChecked=0, Total=1122 [2022-07-12 10:57:33,295 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 116 mSDsluCounter, 969 mSDsCounter, 0 mSdLazyCounter, 1284 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 1222 SdHoareTripleChecker+Invalid, 1889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 519 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 10:57:33,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 1222 Invalid, 1889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1284 Invalid, 0 Unknown, 519 Unchecked, 0.7s Time] [2022-07-12 10:57:33,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2022-07-12 10:57:33,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 287. [2022-07-12 10:57:33,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 193 states have (on average 1.160621761658031) internal successors, (224), 197 states have internal predecessors, (224), 68 states have call successors, (68), 23 states have call predecessors, (68), 25 states have return successors, (93), 67 states have call predecessors, (93), 67 states have call successors, (93) [2022-07-12 10:57:33,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 385 transitions. [2022-07-12 10:57:33,323 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 385 transitions. Word has length 226 [2022-07-12 10:57:33,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:57:33,324 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 385 transitions. [2022-07-12 10:57:33,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 7.466666666666667) internal successors, (112), 15 states have internal predecessors, (112), 7 states have call successors, (31), 4 states have call predecessors, (31), 7 states have return successors, (29), 7 states have call predecessors, (29), 7 states have call successors, (29) [2022-07-12 10:57:33,324 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 385 transitions. [2022-07-12 10:57:33,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2022-07-12 10:57:33,325 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:57:33,326 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:57:33,347 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-12 10:57:33,547 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,SelfDestructingSolverStorable13 [2022-07-12 10:57:33,547 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:57:33,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:57:33,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1947774207, now seen corresponding path program 3 times [2022-07-12 10:57:33,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:57:33,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101772864] [2022-07-12 10:57:33,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:33,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:57:33,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:33,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:57:33,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:33,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:57:33,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:33,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 10:57:33,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:33,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 10:57:33,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:33,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 10:57:33,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:33,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 10:57:33,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:33,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 10:57:33,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:33,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:33,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:33,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:57:33,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:33,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:33,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:33,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:57:33,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:33,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 10:57:33,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:33,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 10:57:33,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:33,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 10:57:33,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:33,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 10:57:33,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:33,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:33,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:33,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:57:34,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:34,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:34,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:34,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-12 10:57:34,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:34,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-12 10:57:34,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:34,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-12 10:57:34,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:34,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-12 10:57:34,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:34,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-12 10:57:34,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:34,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-07-12 10:57:34,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:34,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-07-12 10:57:34,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:34,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-07-12 10:57:34,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:34,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-12 10:57:34,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:34,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-07-12 10:57:34,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:34,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-07-12 10:57:34,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:34,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-12 10:57:34,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:34,332 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 23 proven. 47 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2022-07-12 10:57:34,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:57:34,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101772864] [2022-07-12 10:57:34,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101772864] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:57:34,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624919177] [2022-07-12 10:57:34,333 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-12 10:57:34,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:57:34,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:57:34,334 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) [2022-07-12 10:57:34,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-12 10:57:35,375 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-07-12 10:57:35,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 10:57:35,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 2570 conjuncts, 26 conjunts are in the unsatisfiable core [2022-07-12 10:57:35,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:57:36,094 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 161 proven. 6 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2022-07-12 10:57:36,094 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:57:36,382 INFO L356 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-07-12 10:57:36,382 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 19 [2022-07-12 10:57:36,477 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 88 proven. 10 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2022-07-12 10:57:36,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1624919177] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 10:57:36,479 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 10:57:36,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 12, 11] total 35 [2022-07-12 10:57:36,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691266794] [2022-07-12 10:57:36,480 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 10:57:36,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-07-12 10:57:36,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:57:36,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-07-12 10:57:36,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=1076, Unknown=0, NotChecked=0, Total=1190 [2022-07-12 10:57:36,482 INFO L87 Difference]: Start difference. First operand 287 states and 385 transitions. Second operand has 35 states, 33 states have (on average 4.333333333333333) internal successors, (143), 30 states have internal predecessors, (143), 8 states have call successors, (58), 6 states have call predecessors, (58), 9 states have return successors, (54), 8 states have call predecessors, (54), 8 states have call successors, (54) [2022-07-12 10:57:40,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:57:40,213 INFO L93 Difference]: Finished difference Result 607 states and 895 transitions. [2022-07-12 10:57:40,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-12 10:57:40,213 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 33 states have (on average 4.333333333333333) internal successors, (143), 30 states have internal predecessors, (143), 8 states have call successors, (58), 6 states have call predecessors, (58), 9 states have return successors, (54), 8 states have call predecessors, (54), 8 states have call successors, (54) Word has length 226 [2022-07-12 10:57:40,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:57:40,216 INFO L225 Difference]: With dead ends: 607 [2022-07-12 10:57:40,216 INFO L226 Difference]: Without dead ends: 417 [2022-07-12 10:57:40,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 567 GetRequests, 499 SyntacticMatches, 7 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 874 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=431, Invalid=3475, Unknown=0, NotChecked=0, Total=3906 [2022-07-12 10:57:40,220 INFO L413 NwaCegarLoop]: 310 mSDtfsCounter, 412 mSDsluCounter, 2711 mSDsCounter, 0 mSdLazyCounter, 5117 mSolverCounterSat, 374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 3021 SdHoareTripleChecker+Invalid, 6931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 5117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1440 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-12 10:57:40,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [477 Valid, 3021 Invalid, 6931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [374 Valid, 5117 Invalid, 0 Unknown, 1440 Unchecked, 2.8s Time] [2022-07-12 10:57:40,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2022-07-12 10:57:40,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 304. [2022-07-12 10:57:40,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 205 states have (on average 1.146341463414634) internal successors, (235), 211 states have internal predecessors, (235), 71 states have call successors, (71), 23 states have call predecessors, (71), 27 states have return successors, (114), 70 states have call predecessors, (114), 70 states have call successors, (114) [2022-07-12 10:57:40,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 420 transitions. [2022-07-12 10:57:40,235 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 420 transitions. Word has length 226 [2022-07-12 10:57:40,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:57:40,236 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 420 transitions. [2022-07-12 10:57:40,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 33 states have (on average 4.333333333333333) internal successors, (143), 30 states have internal predecessors, (143), 8 states have call successors, (58), 6 states have call predecessors, (58), 9 states have return successors, (54), 8 states have call predecessors, (54), 8 states have call successors, (54) [2022-07-12 10:57:40,237 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 420 transitions. [2022-07-12 10:57:40,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2022-07-12 10:57:40,238 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:57:40,238 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:57:40,258 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-12 10:57:40,451 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,SelfDestructingSolverStorable14 [2022-07-12 10:57:40,451 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:57:40,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:57:40,452 INFO L85 PathProgramCache]: Analyzing trace with hash -133423481, now seen corresponding path program 1 times [2022-07-12 10:57:40,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:57:40,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727309952] [2022-07-12 10:57:40,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:40,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:57:40,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:40,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:57:40,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:40,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:57:40,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:40,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 10:57:40,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:40,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 10:57:40,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:40,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 10:57:40,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:40,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 10:57:40,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:40,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 10:57:40,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:40,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:40,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:40,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:57:40,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:40,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:40,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:40,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:57:40,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:40,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 10:57:40,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:40,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 10:57:40,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:40,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 10:57:40,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:40,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 10:57:40,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:40,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:40,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:40,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:57:40,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:40,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:40,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:40,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-12 10:57:40,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:40,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-12 10:57:40,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:40,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-12 10:57:40,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:41,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-12 10:57:41,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:41,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-12 10:57:41,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:41,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-07-12 10:57:41,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:41,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-07-12 10:57:41,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:41,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-07-12 10:57:41,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:41,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-12 10:57:41,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:41,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-07-12 10:57:41,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:41,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-07-12 10:57:41,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:41,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-12 10:57:41,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:41,103 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 23 proven. 47 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2022-07-12 10:57:41,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:57:41,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727309952] [2022-07-12 10:57:41,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727309952] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:57:41,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306219501] [2022-07-12 10:57:41,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:41,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:57:41,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:57:41,105 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) [2022-07-12 10:57:41,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-12 10:57:41,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:41,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 3139 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-12 10:57:41,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:57:41,773 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 212 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2022-07-12 10:57:41,774 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:57:41,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1306219501] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:57:41,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:57:41,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [20] total 27 [2022-07-12 10:57:41,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515178272] [2022-07-12 10:57:41,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:57:41,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 10:57:41,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:57:41,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 10:57:41,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=643, Unknown=0, NotChecked=0, Total=702 [2022-07-12 10:57:41,776 INFO L87 Difference]: Start difference. First operand 304 states and 420 transitions. Second operand has 9 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2022-07-12 10:57:41,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:57:41,972 INFO L93 Difference]: Finished difference Result 531 states and 724 transitions. [2022-07-12 10:57:41,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 10:57:41,972 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 226 [2022-07-12 10:57:41,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:57:41,975 INFO L225 Difference]: With dead ends: 531 [2022-07-12 10:57:41,975 INFO L226 Difference]: Without dead ends: 267 [2022-07-12 10:57:41,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=797, Unknown=0, NotChecked=0, Total=870 [2022-07-12 10:57:41,976 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 12 mSDsluCounter, 1540 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1769 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 10:57:41,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1769 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 10:57:41,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2022-07-12 10:57:41,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 242. [2022-07-12 10:57:41,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 158 states have (on average 1.1582278481012658) internal successors, (183), 161 states have internal predecessors, (183), 62 states have call successors, (62), 20 states have call predecessors, (62), 21 states have return successors, (76), 61 states have call predecessors, (76), 61 states have call successors, (76) [2022-07-12 10:57:41,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 321 transitions. [2022-07-12 10:57:41,986 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 321 transitions. Word has length 226 [2022-07-12 10:57:41,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:57:41,986 INFO L495 AbstractCegarLoop]: Abstraction has 242 states and 321 transitions. [2022-07-12 10:57:41,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2022-07-12 10:57:41,987 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 321 transitions. [2022-07-12 10:57:41,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2022-07-12 10:57:41,988 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:57:41,988 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:57:42,010 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-12 10:57:42,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:57:42,206 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:57:42,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:57:42,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1037491156, now seen corresponding path program 2 times [2022-07-12 10:57:42,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:57:42,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226604962] [2022-07-12 10:57:42,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:42,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:57:42,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:42,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:57:42,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:42,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:57:42,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:42,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 10:57:42,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:42,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 10:57:42,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:42,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 10:57:42,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:42,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 10:57:42,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:42,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 10:57:42,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:42,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:42,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:42,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:57:42,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:42,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:42,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:42,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:57:42,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:42,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 10:57:42,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:42,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 10:57:42,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:42,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 10:57:42,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:42,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 10:57:42,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:42,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:42,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:42,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:57:42,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:42,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:42,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:42,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-12 10:57:42,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:42,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-12 10:57:42,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:42,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 10:57:42,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:42,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-12 10:57:42,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:42,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-12 10:57:42,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:42,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-07-12 10:57:42,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:42,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-07-12 10:57:42,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:42,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-12 10:57:42,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:42,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-07-12 10:57:42,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:42,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-12 10:57:42,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:42,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-07-12 10:57:42,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:42,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-07-12 10:57:42,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:42,742 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 60 proven. 20 refuted. 0 times theorem prover too weak. 320 trivial. 0 not checked. [2022-07-12 10:57:42,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:57:42,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226604962] [2022-07-12 10:57:42,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226604962] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:57:42,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1170348520] [2022-07-12 10:57:42,743 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 10:57:42,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:57:42,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:57:42,744 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:57:42,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-12 10:57:43,363 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 10:57:43,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 10:57:43,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 3144 conjuncts, 46 conjunts are in the unsatisfiable core [2022-07-12 10:57:43,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:57:43,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:57:43,662 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 23 [2022-07-12 10:57:43,664 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 24 treesize of output 16 [2022-07-12 10:57:44,059 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 271 proven. 19 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2022-07-12 10:57:44,059 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:57:44,598 INFO L356 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2022-07-12 10:57:44,598 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 19 [2022-07-12 10:57:44,667 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 36 proven. 64 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2022-07-12 10:57:44,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1170348520] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 10:57:44,668 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 10:57:44,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 11] total 33 [2022-07-12 10:57:44,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484875249] [2022-07-12 10:57:44,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 10:57:44,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-07-12 10:57:44,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:57:44,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-07-12 10:57:44,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=954, Unknown=0, NotChecked=0, Total=1056 [2022-07-12 10:57:44,670 INFO L87 Difference]: Start difference. First operand 242 states and 321 transitions. Second operand has 33 states, 31 states have (on average 5.580645161290323) internal successors, (173), 28 states have internal predecessors, (173), 11 states have call successors, (65), 9 states have call predecessors, (65), 9 states have return successors, (60), 9 states have call predecessors, (60), 10 states have call successors, (60) [2022-07-12 10:57:47,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:57:47,492 INFO L93 Difference]: Finished difference Result 535 states and 759 transitions. [2022-07-12 10:57:47,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-07-12 10:57:47,493 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 31 states have (on average 5.580645161290323) internal successors, (173), 28 states have internal predecessors, (173), 11 states have call successors, (65), 9 states have call predecessors, (65), 9 states have return successors, (60), 9 states have call predecessors, (60), 10 states have call successors, (60) Word has length 228 [2022-07-12 10:57:47,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:57:47,495 INFO L225 Difference]: With dead ends: 535 [2022-07-12 10:57:47,495 INFO L226 Difference]: Without dead ends: 363 [2022-07-12 10:57:47,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 561 GetRequests, 497 SyntacticMatches, 7 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 796 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=309, Invalid=3113, Unknown=0, NotChecked=0, Total=3422 [2022-07-12 10:57:47,497 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 249 mSDsluCounter, 1451 mSDsCounter, 0 mSdLazyCounter, 3668 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 1702 SdHoareTripleChecker+Invalid, 4810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 3668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 980 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-12 10:57:47,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 1702 Invalid, 4810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 3668 Invalid, 0 Unknown, 980 Unchecked, 2.1s Time] [2022-07-12 10:57:47,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2022-07-12 10:57:47,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 305. [2022-07-12 10:57:47,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 197 states have (on average 1.1522842639593909) internal successors, (227), 201 states have internal predecessors, (227), 81 states have call successors, (81), 23 states have call predecessors, (81), 26 states have return successors, (117), 81 states have call predecessors, (117), 80 states have call successors, (117) [2022-07-12 10:57:47,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 425 transitions. [2022-07-12 10:57:47,511 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 425 transitions. Word has length 228 [2022-07-12 10:57:47,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:57:47,530 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 425 transitions. [2022-07-12 10:57:47,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 31 states have (on average 5.580645161290323) internal successors, (173), 28 states have internal predecessors, (173), 11 states have call successors, (65), 9 states have call predecessors, (65), 9 states have return successors, (60), 9 states have call predecessors, (60), 10 states have call successors, (60) [2022-07-12 10:57:47,530 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 425 transitions. [2022-07-12 10:57:47,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2022-07-12 10:57:47,531 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:57:47,532 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:57:47,562 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-12 10:57:47,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-07-12 10:57:47,743 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:57:47,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:57:47,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1164886158, now seen corresponding path program 4 times [2022-07-12 10:57:47,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:57:47,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510544112] [2022-07-12 10:57:47,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:47,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:57:47,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:47,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:57:47,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:47,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:57:47,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:47,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 10:57:47,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:47,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 10:57:47,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:47,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 10:57:47,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:47,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 10:57:47,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:47,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 10:57:47,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:47,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:47,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:47,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:57:47,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:47,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:47,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:47,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:57:47,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:47,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 10:57:47,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:47,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 10:57:47,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:47,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 10:57:47,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:47,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 10:57:47,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:47,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:47,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:47,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:57:47,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:47,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:47,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:47,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-12 10:57:47,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:47,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-12 10:57:47,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:47,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 10:57:47,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:47,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-12 10:57:47,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:47,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-12 10:57:47,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:47,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-07-12 10:57:47,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:47,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-07-12 10:57:48,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:48,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-07-12 10:57:48,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:48,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-07-12 10:57:48,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:48,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-07-12 10:57:48,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:48,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-07-12 10:57:48,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:48,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-07-12 10:57:48,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:48,074 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 35 proven. 15 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2022-07-12 10:57:48,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:57:48,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510544112] [2022-07-12 10:57:48,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510544112] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:57:48,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813160543] [2022-07-12 10:57:48,075 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-12 10:57:48,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:57:48,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:57:48,076 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:57:48,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-12 10:57:48,620 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-12 10:57:48,620 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 10:57:48,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 3151 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-12 10:57:48,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:57:48,680 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 199 proven. 0 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2022-07-12 10:57:48,681 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:57:48,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1813160543] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:57:48,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:57:48,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [12] total 13 [2022-07-12 10:57:48,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359210942] [2022-07-12 10:57:48,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:57:48,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 10:57:48,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:57:48,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 10:57:48,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-07-12 10:57:48,682 INFO L87 Difference]: Start difference. First operand 305 states and 425 transitions. Second operand has 9 states, 8 states have (on average 11.25) internal successors, (90), 8 states have internal predecessors, (90), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2022-07-12 10:57:48,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:57:48,878 INFO L93 Difference]: Finished difference Result 521 states and 725 transitions. [2022-07-12 10:57:48,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 10:57:48,878 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 11.25) internal successors, (90), 8 states have internal predecessors, (90), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 232 [2022-07-12 10:57:48,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:57:48,881 INFO L225 Difference]: With dead ends: 521 [2022-07-12 10:57:48,881 INFO L226 Difference]: Without dead ends: 310 [2022-07-12 10:57:48,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 288 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-07-12 10:57:48,883 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 12 mSDsluCounter, 1544 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1774 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 10:57:48,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1774 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 10:57:48,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2022-07-12 10:57:48,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 305. [2022-07-12 10:57:48,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 197 states have (on average 1.1522842639593909) internal successors, (227), 201 states have internal predecessors, (227), 81 states have call successors, (81), 23 states have call predecessors, (81), 26 states have return successors, (114), 81 states have call predecessors, (114), 80 states have call successors, (114) [2022-07-12 10:57:48,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 422 transitions. [2022-07-12 10:57:48,899 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 422 transitions. Word has length 232 [2022-07-12 10:57:48,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:57:48,899 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 422 transitions. [2022-07-12 10:57:48,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 11.25) internal successors, (90), 8 states have internal predecessors, (90), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2022-07-12 10:57:48,899 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 422 transitions. [2022-07-12 10:57:48,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2022-07-12 10:57:48,901 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:57:48,901 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:57:48,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-12 10:57:49,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-07-12 10:57:49,120 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:57:49,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:57:49,120 INFO L85 PathProgramCache]: Analyzing trace with hash -233712675, now seen corresponding path program 3 times [2022-07-12 10:57:49,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:57:49,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622829952] [2022-07-12 10:57:49,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:49,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:57:49,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:49,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:57:49,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:49,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:57:49,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:49,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 10:57:49,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:49,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 10:57:49,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:49,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 10:57:49,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:49,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 10:57:49,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:49,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 10:57:49,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:49,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:49,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:49,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:57:49,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:49,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:49,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:49,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:57:49,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:49,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 10:57:49,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:49,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 10:57:49,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:49,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 10:57:49,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:49,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 10:57:49,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:49,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:49,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:49,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:57:49,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:49,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:49,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:49,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-12 10:57:49,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:49,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-12 10:57:49,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:49,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 10:57:49,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:49,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-12 10:57:49,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:49,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-12 10:57:49,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:49,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-07-12 10:57:49,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:49,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-07-12 10:57:49,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:49,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-12 10:57:49,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:49,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-07-12 10:57:49,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:49,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-07-12 10:57:49,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:49,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-12 10:57:49,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:49,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-07-12 10:57:49,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:49,758 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 92 proven. 8 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2022-07-12 10:57:49,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:57:49,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622829952] [2022-07-12 10:57:49,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622829952] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:57:49,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601037480] [2022-07-12 10:57:49,759 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-12 10:57:49,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:57:49,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:57:49,773 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:57:49,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-12 10:57:50,724 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-07-12 10:57:50,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 10:57:50,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 2572 conjuncts, 28 conjunts are in the unsatisfiable core [2022-07-12 10:57:50,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:58:03,157 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 163 proven. 8 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2022-07-12 10:58:03,157 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:58:03,360 INFO L356 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2022-07-12 10:58:03,360 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 19 [2022-07-12 10:58:03,426 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 92 proven. 10 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2022-07-12 10:58:03,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601037480] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 10:58:03,427 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 10:58:03,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 9] total 25 [2022-07-12 10:58:03,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072139595] [2022-07-12 10:58:03,427 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 10:58:03,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-12 10:58:03,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:58:03,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-12 10:58:03,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=514, Unknown=2, NotChecked=0, Total=600 [2022-07-12 10:58:03,428 INFO L87 Difference]: Start difference. First operand 305 states and 422 transitions. Second operand has 25 states, 25 states have (on average 5.28) internal successors, (132), 22 states have internal predecessors, (132), 4 states have call successors, (40), 6 states have call predecessors, (40), 7 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) [2022-07-12 10:58:12,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:58:12,045 INFO L93 Difference]: Finished difference Result 529 states and 735 transitions. [2022-07-12 10:58:12,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-12 10:58:12,045 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.28) internal successors, (132), 22 states have internal predecessors, (132), 4 states have call successors, (40), 6 states have call predecessors, (40), 7 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) Word has length 234 [2022-07-12 10:58:12,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:58:12,047 INFO L225 Difference]: With dead ends: 529 [2022-07-12 10:58:12,047 INFO L226 Difference]: Without dead ends: 400 [2022-07-12 10:58:12,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 568 GetRequests, 513 SyntacticMatches, 7 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 556 ImplicationChecksByTransitivity, 19.4s TimeCoverageRelationStatistics Valid=417, Invalid=2028, Unknown=5, NotChecked=0, Total=2450 [2022-07-12 10:58:12,049 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 596 mSDsluCounter, 725 mSDsCounter, 0 mSdLazyCounter, 2415 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 940 SdHoareTripleChecker+Invalid, 3326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 2415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 586 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-12 10:58:12,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [627 Valid, 940 Invalid, 3326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 2415 Invalid, 0 Unknown, 586 Unchecked, 1.6s Time] [2022-07-12 10:58:12,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2022-07-12 10:58:12,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 339. [2022-07-12 10:58:12,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 220 states have (on average 1.15) internal successors, (253), 223 states have internal predecessors, (253), 90 states have call successors, (90), 26 states have call predecessors, (90), 28 states have return successors, (139), 90 states have call predecessors, (139), 89 states have call successors, (139) [2022-07-12 10:58:12,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 482 transitions. [2022-07-12 10:58:12,069 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 482 transitions. Word has length 234 [2022-07-12 10:58:12,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:58:12,069 INFO L495 AbstractCegarLoop]: Abstraction has 339 states and 482 transitions. [2022-07-12 10:58:12,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.28) internal successors, (132), 22 states have internal predecessors, (132), 4 states have call successors, (40), 6 states have call predecessors, (40), 7 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) [2022-07-12 10:58:12,069 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 482 transitions. [2022-07-12 10:58:12,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2022-07-12 10:58:12,071 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:58:12,071 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:58:12,092 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-07-12 10:58:12,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:58:12,292 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:58:12,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:58:12,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1271462305, now seen corresponding path program 1 times [2022-07-12 10:58:12,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:58:12,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834563436] [2022-07-12 10:58:12,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:58:12,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:58:12,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:12,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:58:12,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:12,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:58:12,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:12,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 10:58:12,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:12,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 10:58:12,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:12,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 10:58:12,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:12,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 10:58:12,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:12,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 10:58:12,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:12,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:58:12,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:12,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:58:12,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:12,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:58:12,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:12,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:58:12,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:12,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 10:58:12,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:12,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 10:58:12,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:12,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 10:58:12,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:12,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 10:58:12,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:12,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:58:12,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:12,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:58:12,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:12,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:58:12,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:12,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-12 10:58:12,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:12,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-12 10:58:12,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:12,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 10:58:12,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:12,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-12 10:58:12,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:12,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:58:12,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:12,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:58:12,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:12,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-07-12 10:58:12,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:12,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-07-12 10:58:12,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:12,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-07-12 10:58:12,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:12,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-07-12 10:58:12,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:12,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-07-12 10:58:12,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:12,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-07-12 10:58:12,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:12,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-07-12 10:58:12,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:12,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-07-12 10:58:12,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:12,895 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 58 proven. 42 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-07-12 10:58:12,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:58:12,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834563436] [2022-07-12 10:58:12,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834563436] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:58:12,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414811990] [2022-07-12 10:58:12,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:58:12,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:58:12,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:58:12,897 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:58:12,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-07-12 10:58:13,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:13,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 3202 conjuncts, 27 conjunts are in the unsatisfiable core [2022-07-12 10:58:13,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:58:13,749 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 27 treesize of output 15 [2022-07-12 10:58:13,816 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 252 proven. 8 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2022-07-12 10:58:13,816 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:58:14,052 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 30 treesize of output 18 [2022-07-12 10:58:14,124 INFO L356 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-07-12 10:58:14,124 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2022-07-12 10:58:14,215 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 16 proven. 52 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2022-07-12 10:58:14,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [414811990] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 10:58:14,215 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 10:58:14,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12, 10] total 28 [2022-07-12 10:58:14,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419349664] [2022-07-12 10:58:14,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 10:58:14,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-07-12 10:58:14,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:58:14,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-07-12 10:58:14,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=681, Unknown=0, NotChecked=0, Total=756 [2022-07-12 10:58:14,217 INFO L87 Difference]: Start difference. First operand 339 states and 482 transitions. Second operand has 28 states, 26 states have (on average 5.846153846153846) internal successors, (152), 24 states have internal predecessors, (152), 9 states have call successors, (66), 9 states have call predecessors, (66), 8 states have return successors, (61), 7 states have call predecessors, (61), 9 states have call successors, (61) [2022-07-12 10:58:17,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:58:17,858 INFO L93 Difference]: Finished difference Result 763 states and 1188 transitions. [2022-07-12 10:58:17,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-12 10:58:17,859 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 5.846153846153846) internal successors, (152), 24 states have internal predecessors, (152), 9 states have call successors, (66), 9 states have call predecessors, (66), 8 states have return successors, (61), 7 states have call predecessors, (61), 9 states have call successors, (61) Word has length 243 [2022-07-12 10:58:17,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:58:17,862 INFO L225 Difference]: With dead ends: 763 [2022-07-12 10:58:17,862 INFO L226 Difference]: Without dead ends: 513 [2022-07-12 10:58:17,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 587 GetRequests, 534 SyntacticMatches, 4 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 481 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=279, Invalid=2271, Unknown=0, NotChecked=0, Total=2550 [2022-07-12 10:58:17,864 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 322 mSDsluCounter, 911 mSDsCounter, 0 mSdLazyCounter, 4797 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 1139 SdHoareTripleChecker+Invalid, 5718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 4797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 702 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-07-12 10:58:17,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [387 Valid, 1139 Invalid, 5718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 4797 Invalid, 0 Unknown, 702 Unchecked, 3.0s Time] [2022-07-12 10:58:17,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2022-07-12 10:58:17,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 434. [2022-07-12 10:58:17,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 276 states have (on average 1.1702898550724639) internal successors, (323), 279 states have internal predecessors, (323), 125 states have call successors, (125), 30 states have call predecessors, (125), 32 states have return successors, (211), 125 states have call predecessors, (211), 124 states have call successors, (211) [2022-07-12 10:58:17,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 659 transitions. [2022-07-12 10:58:17,889 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 659 transitions. Word has length 243 [2022-07-12 10:58:17,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:58:17,889 INFO L495 AbstractCegarLoop]: Abstraction has 434 states and 659 transitions. [2022-07-12 10:58:17,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 5.846153846153846) internal successors, (152), 24 states have internal predecessors, (152), 9 states have call successors, (66), 9 states have call predecessors, (66), 8 states have return successors, (61), 7 states have call predecessors, (61), 9 states have call successors, (61) [2022-07-12 10:58:17,890 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 659 transitions. [2022-07-12 10:58:17,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2022-07-12 10:58:17,891 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:58:17,892 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:58:17,914 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-07-12 10:58:18,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:58:18,112 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:58:18,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:58:18,113 INFO L85 PathProgramCache]: Analyzing trace with hash -925659295, now seen corresponding path program 1 times [2022-07-12 10:58:18,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:58:18,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414922066] [2022-07-12 10:58:18,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:58:18,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:58:18,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:18,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:58:18,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:18,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:58:18,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:18,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 10:58:18,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:18,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 10:58:18,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:18,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 10:58:18,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:18,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 10:58:18,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:18,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 10:58:18,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:18,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:58:18,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:18,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:58:18,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:18,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:58:18,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:18,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:58:18,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:18,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 10:58:18,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:18,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 10:58:18,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:18,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 10:58:18,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:18,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 10:58:18,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:18,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:58:18,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:18,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:58:18,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:18,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:58:18,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:18,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-12 10:58:18,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:18,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-12 10:58:18,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:18,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 10:58:18,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:18,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-12 10:58:18,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:18,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:58:18,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:18,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:58:18,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:18,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-07-12 10:58:18,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:18,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-07-12 10:58:18,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:18,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-07-12 10:58:18,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:18,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-07-12 10:58:18,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:18,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-07-12 10:58:18,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:18,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-07-12 10:58:18,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:18,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-07-12 10:58:18,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:18,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-07-12 10:58:18,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:18,750 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 58 proven. 42 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-07-12 10:58:18,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:58:18,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414922066] [2022-07-12 10:58:18,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414922066] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:58:18,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109968300] [2022-07-12 10:58:18,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:58:18,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:58:18,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:58:18,757 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:58:18,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-07-12 10:58:19,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:19,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 3209 conjuncts, 100 conjunts are in the unsatisfiable core [2022-07-12 10:58:19,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:58:19,523 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 13 treesize of output 9 [2022-07-12 10:58:19,526 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-12 10:58:25,028 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 [2022-07-12 10:58:25,030 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 [2022-07-12 10:58:25,042 WARN L855 $PredicateComparison]: unable to prove that (exists ((save_byte_from_array_~storage.base Int) (v_ArrVal_4159 Int) (v_ArrVal_4155 Int) (v_ArrVal_4160 (Array Int Int))) (and (= (store |c_old(#memory_int)| save_byte_from_array_~storage.base (store (store (select |c_old(#memory_int)| save_byte_from_array_~storage.base) |c_save_byte_from_array_#in~storage.offset| v_ArrVal_4155) (+ |c_save_byte_from_array_#in~storage.offset| 8) v_ArrVal_4159)) |c_#memory_int|) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| save_byte_from_array_~storage.base v_ArrVal_4160)))) is different from true [2022-07-12 10:58:25,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:58:25,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:58:25,054 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 30 [2022-07-12 10:58:25,065 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-12 10:58:25,065 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 [2022-07-12 10:58:25,069 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 4 [2022-07-12 10:58:25,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:58:25,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:58:25,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:58:25,108 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 32 [2022-07-12 10:58:25,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:58:25,113 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 23 [2022-07-12 10:58:25,115 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 13 treesize of output 9 [2022-07-12 10:58:25,117 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 24 treesize of output 16 [2022-07-12 10:58:31,811 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 303 proven. 30 refuted. 0 times theorem prover too weak. 129 trivial. 2 not checked. [2022-07-12 10:58:31,811 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:58:32,337 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_save_byte_from_array_~storage.base_54 Int) (v_ArrVal_4178 Int) (v_ArrVal_4179 Int) (v_ArrVal_4180 (Array Int Int))) (or (not (= (select (select (store |c_#memory_$Pointer$.base| v_save_byte_from_array_~storage.base_54 v_ArrVal_4180) |c_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base|) (+ |c_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.offset| 8)) 0)) (not (= 0 (mod (select (select (store |c_#memory_int| v_save_byte_from_array_~storage.base_54 (store (store (select |c_#memory_int| v_save_byte_from_array_~storage.base_54) |c_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#old_byte_from_src~0#1.offset| v_ArrVal_4178) (+ |c_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#old_byte_from_src~0#1.offset| 8) v_ArrVal_4179)) |c_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base|) (+ 16 |c_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.offset|)) 18446744073709551616))))) is different from false [2022-07-12 10:58:32,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2109968300] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:58:32,339 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 10:58:32,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 29] total 42 [2022-07-12 10:58:32,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332505700] [2022-07-12 10:58:32,339 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 10:58:32,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-07-12 10:58:32,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:58:32,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-07-12 10:58:32,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=2177, Unknown=6, NotChecked=190, Total=2550 [2022-07-12 10:58:32,341 INFO L87 Difference]: Start difference. First operand 434 states and 659 transitions. Second operand has 42 states, 38 states have (on average 4.7368421052631575) internal successors, (180), 34 states have internal predecessors, (180), 13 states have call successors, (59), 10 states have call predecessors, (59), 12 states have return successors, (55), 12 states have call predecessors, (55), 13 states have call successors, (55) [2022-07-12 10:58:43,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:58:43,807 INFO L93 Difference]: Finished difference Result 898 states and 1345 transitions. [2022-07-12 10:58:43,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-07-12 10:58:43,808 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 38 states have (on average 4.7368421052631575) internal successors, (180), 34 states have internal predecessors, (180), 13 states have call successors, (59), 10 states have call predecessors, (59), 12 states have return successors, (55), 12 states have call predecessors, (55), 13 states have call successors, (55) Word has length 243 [2022-07-12 10:58:43,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:58:43,825 INFO L225 Difference]: With dead ends: 898 [2022-07-12 10:58:43,825 INFO L226 Difference]: Without dead ends: 674 [2022-07-12 10:58:43,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 464 GetRequests, 363 SyntacticMatches, 6 SemanticMatches, 95 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 2358 ImplicationChecksByTransitivity, 21.2s TimeCoverageRelationStatistics Valid=807, Invalid=8120, Unknown=11, NotChecked=374, Total=9312 [2022-07-12 10:58:43,829 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 400 mSDsluCounter, 838 mSDsCounter, 0 mSdLazyCounter, 4356 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 1049 SdHoareTripleChecker+Invalid, 6596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 4356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1955 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-12 10:58:43,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [437 Valid, 1049 Invalid, 6596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 4356 Invalid, 0 Unknown, 1955 Unchecked, 2.6s Time] [2022-07-12 10:58:43,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2022-07-12 10:58:43,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 578. [2022-07-12 10:58:43,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 578 states, 376 states have (on average 1.1702127659574468) internal successors, (440), 382 states have internal predecessors, (440), 157 states have call successors, (157), 39 states have call predecessors, (157), 44 states have return successors, (271), 157 states have call predecessors, (271), 156 states have call successors, (271) [2022-07-12 10:58:43,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 868 transitions. [2022-07-12 10:58:43,861 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 868 transitions. Word has length 243 [2022-07-12 10:58:43,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:58:43,861 INFO L495 AbstractCegarLoop]: Abstraction has 578 states and 868 transitions. [2022-07-12 10:58:43,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 38 states have (on average 4.7368421052631575) internal successors, (180), 34 states have internal predecessors, (180), 13 states have call successors, (59), 10 states have call predecessors, (59), 12 states have return successors, (55), 12 states have call predecessors, (55), 13 states have call successors, (55) [2022-07-12 10:58:43,862 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 868 transitions. [2022-07-12 10:58:43,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2022-07-12 10:58:43,865 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:58:43,865 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:58:43,885 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-07-12 10:58:44,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:58:44,086 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:58:44,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:58:44,086 INFO L85 PathProgramCache]: Analyzing trace with hash -971289891, now seen corresponding path program 5 times [2022-07-12 10:58:44,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:58:44,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668235637] [2022-07-12 10:58:44,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:58:44,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:58:44,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:44,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:58:44,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:44,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:58:44,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:44,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 10:58:44,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:44,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 10:58:44,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:44,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 10:58:44,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:44,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 10:58:44,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:44,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 10:58:44,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:44,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:58:44,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:44,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:58:44,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:44,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:58:44,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:44,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:58:44,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:44,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 10:58:44,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:44,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 10:58:44,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:44,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 10:58:44,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:44,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 10:58:44,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:44,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:58:44,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:44,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:58:44,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:44,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:58:44,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:44,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-12 10:58:44,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:44,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-12 10:58:44,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:44,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 10:58:44,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:44,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-12 10:58:44,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:44,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-12 10:58:44,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:44,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-07-12 10:58:44,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:44,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-07-12 10:58:44,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:44,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-12 10:58:44,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:44,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-07-12 10:58:44,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:44,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-07-12 10:58:44,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:44,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-07-12 10:58:44,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:44,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-07-12 10:58:44,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:44,469 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 43 proven. 8 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2022-07-12 10:58:44,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:58:44,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668235637] [2022-07-12 10:58:44,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668235637] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:58:44,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579864948] [2022-07-12 10:58:44,470 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-12 10:58:44,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:58:44,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:58:44,482 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:58:44,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-07-12 10:58:45,006 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-07-12 10:58:45,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 10:58:45,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 780 conjuncts, 43 conjunts are in the unsatisfiable core [2022-07-12 10:58:45,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:58:45,020 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 [2022-07-12 10:58:45,634 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 289 proven. 14 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2022-07-12 10:58:45,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:58:45,885 INFO L356 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2022-07-12 10:58:45,886 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2022-07-12 10:58:45,954 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 62 proven. 44 refuted. 0 times theorem prover too weak. 326 trivial. 0 not checked. [2022-07-12 10:58:45,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579864948] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 10:58:45,955 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 10:58:45,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 13] total 31 [2022-07-12 10:58:45,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148901468] [2022-07-12 10:58:45,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 10:58:45,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-07-12 10:58:45,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:58:45,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-07-12 10:58:45,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=836, Unknown=0, NotChecked=0, Total=930 [2022-07-12 10:58:45,960 INFO L87 Difference]: Start difference. First operand 578 states and 868 transitions. Second operand has 31 states, 29 states have (on average 5.448275862068965) internal successors, (158), 26 states have internal predecessors, (158), 5 states have call successors, (47), 7 states have call predecessors, (47), 8 states have return successors, (40), 4 states have call predecessors, (40), 5 states have call successors, (40) [2022-07-12 10:58:48,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:58:48,922 INFO L93 Difference]: Finished difference Result 1056 states and 1567 transitions. [2022-07-12 10:58:48,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-07-12 10:58:48,923 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 29 states have (on average 5.448275862068965) internal successors, (158), 26 states have internal predecessors, (158), 5 states have call successors, (47), 7 states have call predecessors, (47), 8 states have return successors, (40), 4 states have call predecessors, (40), 5 states have call successors, (40) Word has length 238 [2022-07-12 10:58:48,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:58:48,943 INFO L225 Difference]: With dead ends: 1056 [2022-07-12 10:58:48,943 INFO L226 Difference]: Without dead ends: 704 [2022-07-12 10:58:48,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 587 GetRequests, 512 SyntacticMatches, 7 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 893 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=709, Invalid=4121, Unknown=0, NotChecked=0, Total=4830 [2022-07-12 10:58:48,961 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 263 mSDsluCounter, 1337 mSDsCounter, 0 mSdLazyCounter, 4004 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 1563 SdHoareTripleChecker+Invalid, 4805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 4004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 679 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-12 10:58:48,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 1563 Invalid, 4805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 4004 Invalid, 0 Unknown, 679 Unchecked, 1.7s Time] [2022-07-12 10:58:48,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2022-07-12 10:58:48,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 597. [2022-07-12 10:58:48,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 597 states, 391 states have (on average 1.1611253196930946) internal successors, (454), 399 states have internal predecessors, (454), 158 states have call successors, (158), 40 states have call predecessors, (158), 47 states have return successors, (253), 158 states have call predecessors, (253), 157 states have call successors, (253) [2022-07-12 10:58:48,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 865 transitions. [2022-07-12 10:58:48,999 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 865 transitions. Word has length 238 [2022-07-12 10:58:49,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:58:49,000 INFO L495 AbstractCegarLoop]: Abstraction has 597 states and 865 transitions. [2022-07-12 10:58:49,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 29 states have (on average 5.448275862068965) internal successors, (158), 26 states have internal predecessors, (158), 5 states have call successors, (47), 7 states have call predecessors, (47), 8 states have return successors, (40), 4 states have call predecessors, (40), 5 states have call successors, (40) [2022-07-12 10:58:49,001 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 865 transitions. [2022-07-12 10:58:49,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-07-12 10:58:49,005 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:58:49,005 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:58:49,025 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-07-12 10:58:49,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-07-12 10:58:49,224 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:58:49,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:58:49,225 INFO L85 PathProgramCache]: Analyzing trace with hash -320689605, now seen corresponding path program 1 times [2022-07-12 10:58:49,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:58:49,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082640949] [2022-07-12 10:58:49,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:58:49,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:58:49,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:49,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:58:49,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:49,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:58:49,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:49,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 10:58:49,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:49,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 10:58:49,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:49,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 10:58:49,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:49,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 10:58:49,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:49,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 10:58:49,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:49,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:58:49,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:49,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:58:49,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:49,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:58:49,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:49,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:58:49,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:49,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 10:58:49,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:49,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 10:58:49,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:49,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 10:58:49,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:49,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 10:58:49,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:49,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:58:49,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:49,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:58:49,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:49,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:58:49,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:49,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-12 10:58:49,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:49,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-12 10:58:49,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:49,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 10:58:49,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:49,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-12 10:58:49,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:49,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-12 10:58:49,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:49,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-07-12 10:58:49,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:49,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-07-12 10:58:49,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:49,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-12 10:58:49,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:49,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-07-12 10:58:49,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:49,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:58:49,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:49,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 10:58:49,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:49,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 10:58:49,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:49,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:58:49,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:49,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 10:58:49,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:49,476 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 404 trivial. 0 not checked. [2022-07-12 10:58:49,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:58:49,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082640949] [2022-07-12 10:58:49,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082640949] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:58:49,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:58:49,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 10:58:49,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395274075] [2022-07-12 10:58:49,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:58:49,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 10:58:49,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:58:49,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 10:58:49,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-12 10:58:49,478 INFO L87 Difference]: Start difference. First operand 597 states and 865 transitions. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (30), 5 states have call predecessors, (30), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2022-07-12 10:58:50,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:58:50,049 INFO L93 Difference]: Finished difference Result 724 states and 1035 transitions. [2022-07-12 10:58:50,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 10:58:50,049 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (30), 5 states have call predecessors, (30), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) Word has length 241 [2022-07-12 10:58:50,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:58:50,052 INFO L225 Difference]: With dead ends: 724 [2022-07-12 10:58:50,052 INFO L226 Difference]: Without dead ends: 617 [2022-07-12 10:58:50,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:58:50,053 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 98 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 932 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 1008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 932 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 10:58:50,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 556 Invalid, 1008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 932 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 10:58:50,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2022-07-12 10:58:50,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 600. [2022-07-12 10:58:50,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 394 states have (on average 1.1598984771573604) internal successors, (457), 401 states have internal predecessors, (457), 158 states have call successors, (158), 40 states have call predecessors, (158), 47 states have return successors, (253), 159 states have call predecessors, (253), 157 states have call successors, (253) [2022-07-12 10:58:50,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 868 transitions. [2022-07-12 10:58:50,086 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 868 transitions. Word has length 241 [2022-07-12 10:58:50,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:58:50,087 INFO L495 AbstractCegarLoop]: Abstraction has 600 states and 868 transitions. [2022-07-12 10:58:50,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (30), 5 states have call predecessors, (30), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2022-07-12 10:58:50,087 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 868 transitions. [2022-07-12 10:58:50,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2022-07-12 10:58:50,090 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:58:50,090 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:58:50,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-12 10:58:50,090 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:58:50,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:58:50,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1129747448, now seen corresponding path program 6 times [2022-07-12 10:58:50,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:58:50,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152444527] [2022-07-12 10:58:50,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:58:50,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:58:50,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:50,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:58:50,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:50,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:58:50,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:50,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 10:58:50,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:50,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 10:58:50,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:50,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 10:58:50,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:50,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 10:58:50,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:50,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 10:58:50,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:50,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:58:50,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:50,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:58:50,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:50,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:58:50,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:50,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:58:50,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:50,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 10:58:50,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:50,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 10:58:50,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:50,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 10:58:50,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:50,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 10:58:50,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:50,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:58:50,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:50,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:58:50,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:50,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:58:50,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:50,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-12 10:58:50,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:50,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-12 10:58:50,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:50,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 10:58:50,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:50,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-12 10:58:50,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:50,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-12 10:58:50,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:50,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-07-12 10:58:50,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:50,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-07-12 10:58:50,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:50,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-12 10:58:50,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:50,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-07-12 10:58:50,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:50,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-12 10:58:50,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:50,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-07-12 10:58:50,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:50,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-07-12 10:58:50,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:50,669 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 52 proven. 54 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked. [2022-07-12 10:58:50,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:58:50,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152444527] [2022-07-12 10:58:50,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152444527] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:58:50,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333977931] [2022-07-12 10:58:50,669 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-12 10:58:50,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:58:50,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:58:50,696 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:58:50,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-07-12 10:58:51,386 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-07-12 10:58:51,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 10:58:51,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 2960 conjuncts, 155 conjunts are in the unsatisfiable core [2022-07-12 10:58:51,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:58:52,121 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 59 treesize of output 47 [2022-07-12 10:58:52,126 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 53 treesize of output 41 [2022-07-12 10:58:52,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:58:52,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:58:52,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:58:52,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:58:52,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:58:52,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:58:52,319 INFO L356 Elim1Store]: treesize reduction 308, result has 19.2 percent of original size [2022-07-12 10:58:52,320 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 66 treesize of output 126 [2022-07-12 10:58:52,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:58:52,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:58:52,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:58:52,332 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 28 [2022-07-12 10:58:52,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:58:52,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:58:52,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:58:52,339 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 28 [2022-07-12 10:58:54,142 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 33 treesize of output 25 [2022-07-12 10:58:54,152 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 29 treesize of output 21 [2022-07-12 10:58:55,421 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 111 proven. 244 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2022-07-12 10:58:55,421 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:59:19,052 WARN L233 SmtUtils]: Spent 13.99s on a formula simplification that was a NOOP. DAG size: 49 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-12 10:59:33,185 WARN L233 SmtUtils]: Spent 13.84s on a formula simplification that was a NOOP. DAG size: 52 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-12 10:59:47,324 WARN L233 SmtUtils]: Spent 14.03s on a formula simplification that was a NOOP. DAG size: 52 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-12 10:59:54,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333977931] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:59:54,072 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 10:59:54,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 33] total 47 [2022-07-12 10:59:54,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451081919] [2022-07-12 10:59:54,072 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 10:59:54,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-07-12 10:59:54,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:59:54,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-07-12 10:59:54,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=3550, Unknown=2, NotChecked=0, Total=3782 [2022-07-12 10:59:54,074 INFO L87 Difference]: Start difference. First operand 600 states and 868 transitions. Second operand has 47 states, 42 states have (on average 5.309523809523809) internal successors, (223), 36 states have internal predecessors, (223), 15 states have call successors, (57), 14 states have call predecessors, (57), 12 states have return successors, (54), 12 states have call predecessors, (54), 13 states have call successors, (54) [2022-07-12 11:00:10,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:00:10,385 INFO L93 Difference]: Finished difference Result 1308 states and 1839 transitions. [2022-07-12 11:00:10,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-07-12 11:00:10,386 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 42 states have (on average 5.309523809523809) internal successors, (223), 36 states have internal predecessors, (223), 15 states have call successors, (57), 14 states have call predecessors, (57), 12 states have return successors, (54), 12 states have call predecessors, (54), 13 states have call successors, (54) Word has length 240 [2022-07-12 11:00:10,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:00:10,391 INFO L225 Difference]: With dead ends: 1308 [2022-07-12 11:00:10,391 INFO L226 Difference]: Without dead ends: 1026 [2022-07-12 11:00:10,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 353 SyntacticMatches, 12 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4404 ImplicationChecksByTransitivity, 72.7s TimeCoverageRelationStatistics Valid=1035, Invalid=13477, Unknown=8, NotChecked=0, Total=14520 [2022-07-12 11:00:10,395 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 736 mSDsluCounter, 2165 mSDsCounter, 0 mSdLazyCounter, 6588 mSolverCounterSat, 672 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 786 SdHoareTripleChecker+Valid, 2470 SdHoareTripleChecker+Invalid, 9231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 672 IncrementalHoareTripleChecker+Valid, 6588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1971 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-07-12 11:00:10,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [786 Valid, 2470 Invalid, 9231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [672 Valid, 6588 Invalid, 0 Unknown, 1971 Unchecked, 4.0s Time] [2022-07-12 11:00:10,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1026 states. [2022-07-12 11:00:10,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1026 to 958. [2022-07-12 11:00:10,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 958 states, 643 states have (on average 1.1477449455676516) internal successors, (738), 650 states have internal predecessors, (738), 241 states have call successors, (241), 66 states have call predecessors, (241), 73 states have return successors, (377), 243 states have call predecessors, (377), 239 states have call successors, (377) [2022-07-12 11:00:10,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 958 states to 958 states and 1356 transitions. [2022-07-12 11:00:10,454 INFO L78 Accepts]: Start accepts. Automaton has 958 states and 1356 transitions. Word has length 240 [2022-07-12 11:00:10,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:00:10,455 INFO L495 AbstractCegarLoop]: Abstraction has 958 states and 1356 transitions. [2022-07-12 11:00:10,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 42 states have (on average 5.309523809523809) internal successors, (223), 36 states have internal predecessors, (223), 15 states have call successors, (57), 14 states have call predecessors, (57), 12 states have return successors, (54), 12 states have call predecessors, (54), 13 states have call successors, (54) [2022-07-12 11:00:10,455 INFO L276 IsEmpty]: Start isEmpty. Operand 958 states and 1356 transitions. [2022-07-12 11:00:10,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2022-07-12 11:00:10,459 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:00:10,459 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:00:10,483 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-07-12 11:00:10,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-07-12 11:00:10,671 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:00:10,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:00:10,672 INFO L85 PathProgramCache]: Analyzing trace with hash -910892730, now seen corresponding path program 1 times [2022-07-12 11:00:10,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:00:10,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558885818] [2022-07-12 11:00:10,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:00:10,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:00:10,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:10,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:00:10,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:10,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 11:00:10,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:10,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 11:00:10,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:10,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 11:00:10,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:10,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 11:00:10,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:10,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 11:00:10,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:11,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 11:00:11,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:11,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:00:11,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:11,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 11:00:11,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:11,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:00:11,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:11,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 11:00:11,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:11,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 11:00:11,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:11,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 11:00:11,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:11,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 11:00:11,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:11,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 11:00:11,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:11,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:00:11,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:11,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 11:00:11,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:11,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:00:11,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:11,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-12 11:00:11,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:11,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-12 11:00:11,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:11,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 11:00:11,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:11,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-12 11:00:11,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:11,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-12 11:00:11,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:11,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-07-12 11:00:11,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:11,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-07-12 11:00:11,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:11,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-12 11:00:11,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:11,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-07-12 11:00:11,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:11,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-12 11:00:11,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:11,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-07-12 11:00:11,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:11,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-07-12 11:00:11,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:11,301 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 52 proven. 54 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked. [2022-07-12 11:00:11,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:00:11,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558885818] [2022-07-12 11:00:11,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558885818] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:00:11,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549990423] [2022-07-12 11:00:11,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:00:11,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:00:11,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:00:11,303 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:00:11,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-07-12 11:00:11,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:11,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 3170 conjuncts, 100 conjunts are in the unsatisfiable core [2022-07-12 11:00:11,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:00:11,949 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 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-12 11:00:12,074 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-12 11:00:12,074 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 [2022-07-12 11:00:12,189 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-12 11:00:14,652 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 [2022-07-12 11:00:16,702 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 11 treesize of output 14 [2022-07-12 11:00:16,707 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_arrayElimArr_1 (Array Int Int))) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_ensure_byte_buf_has_allocated_buffer_member_#in~buf.base| v_arrayElimArr_1)) (not (= (select v_arrayElimArr_1 (+ 8 |c_ensure_byte_buf_has_allocated_buffer_member_#in~buf.offset|)) 0)))) is different from true [2022-07-12 11:00:16,714 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2022-07-12 11:00:29,190 INFO L356 Elim1Store]: treesize reduction 42, result has 31.1 percent of original size [2022-07-12 11:00:29,190 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 47 [2022-07-12 11:00:29,194 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 24 [2022-07-12 11:00:29,201 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 16 treesize of output 12 [2022-07-12 11:00:41,360 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 11:00:41,363 INFO L356 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2022-07-12 11:00:41,364 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 53 treesize of output 1 [2022-07-12 11:00:41,366 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 310 proven. 20 refuted. 0 times theorem prover too weak. 106 trivial. 2 not checked. [2022-07-12 11:00:41,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 11:00:41,636 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 11:00:41,636 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 38 [2022-07-12 11:00:41,642 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_2 (Array Int Int)) (|v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~#src#1.base_20| Int)) (or (not (= (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~#src#1.base_20| v_arrayElimArr_2) |c_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#buf~3#1.base|) (+ 8 |c_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#buf~3#1.offset|)) 0)) (not (= (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base|) (+ |c_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.offset| 8)) (select v_arrayElimArr_2 8))))) is different from false [2022-07-12 11:00:41,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1549990423] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:00:41,654 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 11:00:41,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 25] total 40 [2022-07-12 11:00:41,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757134452] [2022-07-12 11:00:41,655 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 11:00:41,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-07-12 11:00:41,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:00:41,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-07-12 11:00:41,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=1736, Unknown=13, NotChecked=170, Total=2070 [2022-07-12 11:00:41,657 INFO L87 Difference]: Start difference. First operand 958 states and 1356 transitions. Second operand has 40 states, 35 states have (on average 5.485714285714286) internal successors, (192), 32 states have internal predecessors, (192), 16 states have call successors, (58), 10 states have call predecessors, (58), 11 states have return successors, (55), 13 states have call predecessors, (55), 15 states have call successors, (55) [2022-07-12 11:00:46,023 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimArr_1 (Array Int Int))) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_ensure_byte_buf_has_allocated_buffer_member_#in~buf.base| v_arrayElimArr_1)) (not (= (select v_arrayElimArr_1 (+ 8 |c_ensure_byte_buf_has_allocated_buffer_member_#in~buf.offset|)) 0)))) (not (= (select (select |c_#memory_$Pointer$.base| |c_ensure_byte_buf_has_allocated_buffer_member_#in~buf.base|) (+ 8 |c_ensure_byte_buf_has_allocated_buffer_member_#in~buf.offset|)) 0))) is different from true [2022-07-12 11:01:00,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:01:00,303 INFO L93 Difference]: Finished difference Result 1732 states and 2447 transitions. [2022-07-12 11:01:00,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-07-12 11:01:00,304 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 35 states have (on average 5.485714285714286) internal successors, (192), 32 states have internal predecessors, (192), 16 states have call successors, (58), 10 states have call predecessors, (58), 11 states have return successors, (55), 13 states have call predecessors, (55), 15 states have call successors, (55) Word has length 240 [2022-07-12 11:01:00,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:01:00,310 INFO L225 Difference]: With dead ends: 1732 [2022-07-12 11:01:00,310 INFO L226 Difference]: Without dead ends: 1293 [2022-07-12 11:01:00,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 364 SyntacticMatches, 15 SemanticMatches, 80 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1728 ImplicationChecksByTransitivity, 43.7s TimeCoverageRelationStatistics Valid=469, Invalid=5674, Unknown=31, NotChecked=468, Total=6642 [2022-07-12 11:01:00,316 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 366 mSDsluCounter, 2262 mSDsCounter, 0 mSdLazyCounter, 5588 mSolverCounterSat, 455 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 2541 SdHoareTripleChecker+Invalid, 8117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 455 IncrementalHoareTripleChecker+Valid, 5588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2074 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-07-12 11:01:00,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [437 Valid, 2541 Invalid, 8117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [455 Valid, 5588 Invalid, 0 Unknown, 2074 Unchecked, 3.9s Time] [2022-07-12 11:01:00,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1293 states. [2022-07-12 11:01:00,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1293 to 1052. [2022-07-12 11:01:00,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1052 states, 728 states have (on average 1.1318681318681318) internal successors, (824), 741 states have internal predecessors, (824), 237 states have call successors, (237), 73 states have call predecessors, (237), 86 states have return successors, (385), 239 states have call predecessors, (385), 235 states have call successors, (385) [2022-07-12 11:01:00,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 1446 transitions. [2022-07-12 11:01:00,426 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 1446 transitions. Word has length 240 [2022-07-12 11:01:00,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:01:00,426 INFO L495 AbstractCegarLoop]: Abstraction has 1052 states and 1446 transitions. [2022-07-12 11:01:00,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 35 states have (on average 5.485714285714286) internal successors, (192), 32 states have internal predecessors, (192), 16 states have call successors, (58), 10 states have call predecessors, (58), 11 states have return successors, (55), 13 states have call predecessors, (55), 15 states have call successors, (55) [2022-07-12 11:01:00,426 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 1446 transitions. [2022-07-12 11:01:00,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2022-07-12 11:01:00,430 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:01:00,430 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:01:00,474 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-07-12 11:01:00,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:01:00,652 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:01:00,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:01:00,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1857854068, now seen corresponding path program 1 times [2022-07-12 11:01:00,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:01:00,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502062670] [2022-07-12 11:01:00,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:01:00,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:01:00,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:00,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:01:00,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:00,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 11:01:00,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:00,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 11:01:00,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:00,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 11:01:00,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:00,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 11:01:00,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:00,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 11:01:00,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:00,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 11:01:00,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:00,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:01:00,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:01,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 11:01:01,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:01,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:01:01,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:01,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 11:01:01,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:01,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 11:01:01,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:01,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 11:01:01,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:01,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 11:01:01,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:01,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 11:01:01,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:01,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:01:01,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:01,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 11:01:01,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:01,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:01:01,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:01,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-12 11:01:01,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:01,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-12 11:01:01,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:01,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 11:01:01,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:01,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-12 11:01:01,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:01,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-12 11:01:01,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:01,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-07-12 11:01:01,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:01,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-07-12 11:01:01,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:01,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-12 11:01:01,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:01,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-07-12 11:01:01,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:01,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-12 11:01:01,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:01,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-07-12 11:01:01,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:01,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-07-12 11:01:01,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:01,328 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 25 proven. 59 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2022-07-12 11:01:01,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:01:01,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502062670] [2022-07-12 11:01:01,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502062670] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:01:01,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312229919] [2022-07-12 11:01:01,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:01:01,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:01:01,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:01:01,344 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:01:01,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-07-12 11:01:01,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:01,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 3175 conjuncts, 68 conjunts are in the unsatisfiable core [2022-07-12 11:01:01,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:01:02,213 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-12 11:01:02,731 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 20 treesize of output 8 [2022-07-12 11:01:02,872 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 262 proven. 4 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2022-07-12 11:01:02,872 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 11:01:03,374 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 33 treesize of output 25 [2022-07-12 11:01:03,520 INFO L356 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-07-12 11:01:03,520 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2022-07-12 11:01:03,688 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 40 treesize of output 34 [2022-07-12 11:01:03,863 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 25 proven. 60 refuted. 0 times theorem prover too weak. 353 trivial. 0 not checked. [2022-07-12 11:01:03,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312229919] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 11:01:03,863 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 11:01:03,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 16] total 51 [2022-07-12 11:01:03,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294767586] [2022-07-12 11:01:03,863 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 11:01:03,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-07-12 11:01:03,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:01:03,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-07-12 11:01:03,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=2343, Unknown=0, NotChecked=0, Total=2550 [2022-07-12 11:01:03,865 INFO L87 Difference]: Start difference. First operand 1052 states and 1446 transitions. Second operand has 51 states, 45 states have (on average 5.177777777777778) internal successors, (233), 40 states have internal predecessors, (233), 18 states have call successors, (79), 11 states have call predecessors, (79), 19 states have return successors, (76), 18 states have call predecessors, (76), 18 states have call successors, (76) [2022-07-12 11:01:07,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:01:07,179 INFO L93 Difference]: Finished difference Result 1720 states and 2373 transitions. [2022-07-12 11:01:07,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-12 11:01:07,180 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 45 states have (on average 5.177777777777778) internal successors, (233), 40 states have internal predecessors, (233), 18 states have call successors, (79), 11 states have call predecessors, (79), 19 states have return successors, (76), 18 states have call predecessors, (76), 18 states have call successors, (76) Word has length 240 [2022-07-12 11:01:07,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:01:07,184 INFO L225 Difference]: With dead ends: 1720 [2022-07-12 11:01:07,184 INFO L226 Difference]: Without dead ends: 1105 [2022-07-12 11:01:07,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 588 GetRequests, 516 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1321 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=557, Invalid=4699, Unknown=0, NotChecked=0, Total=5256 [2022-07-12 11:01:07,187 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 629 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 4032 mSolverCounterSat, 524 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 661 SdHoareTripleChecker+Valid, 833 SdHoareTripleChecker+Invalid, 5987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 524 IncrementalHoareTripleChecker+Valid, 4032 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1431 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-12 11:01:07,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [661 Valid, 833 Invalid, 5987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [524 Valid, 4032 Invalid, 0 Unknown, 1431 Unchecked, 2.5s Time] [2022-07-12 11:01:07,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1105 states. [2022-07-12 11:01:07,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1105 to 1056. [2022-07-12 11:01:07,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1056 states, 731 states have (on average 1.131326949384405) internal successors, (827), 744 states have internal predecessors, (827), 237 states have call successors, (237), 74 states have call predecessors, (237), 87 states have return successors, (384), 239 states have call predecessors, (384), 235 states have call successors, (384) [2022-07-12 11:01:07,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1056 states to 1056 states and 1448 transitions. [2022-07-12 11:01:07,252 INFO L78 Accepts]: Start accepts. Automaton has 1056 states and 1448 transitions. Word has length 240 [2022-07-12 11:01:07,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:01:07,252 INFO L495 AbstractCegarLoop]: Abstraction has 1056 states and 1448 transitions. [2022-07-12 11:01:07,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 45 states have (on average 5.177777777777778) internal successors, (233), 40 states have internal predecessors, (233), 18 states have call successors, (79), 11 states have call predecessors, (79), 19 states have return successors, (76), 18 states have call predecessors, (76), 18 states have call successors, (76) [2022-07-12 11:01:07,253 INFO L276 IsEmpty]: Start isEmpty. Operand 1056 states and 1448 transitions. [2022-07-12 11:01:07,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2022-07-12 11:01:07,256 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:01:07,256 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:01:07,279 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-07-12 11:01:07,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:01:07,475 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:01:07,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:01:07,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1740126392, now seen corresponding path program 2 times [2022-07-12 11:01:07,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:01:07,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510857775] [2022-07-12 11:01:07,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:01:07,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:01:07,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:08,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:01:08,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:08,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 11:01:08,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:08,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 11:01:08,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:08,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 11:01:08,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:08,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 11:01:08,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:08,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 11:01:08,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:08,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 11:01:08,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:08,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:01:08,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:08,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 11:01:08,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:08,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:01:08,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:08,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 11:01:08,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:08,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 11:01:08,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:08,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 11:01:08,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:08,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 11:01:08,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:08,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 11:01:08,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:08,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:01:08,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:08,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 11:01:08,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:08,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:01:08,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:08,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-12 11:01:08,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:08,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-12 11:01:08,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:08,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 11:01:08,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:08,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-12 11:01:08,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:08,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-12 11:01:08,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:08,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-07-12 11:01:08,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:08,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-07-12 11:01:08,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:08,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-12 11:01:08,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:08,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-07-12 11:01:08,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:08,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-12 11:01:08,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:08,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-07-12 11:01:08,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:08,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-07-12 11:01:08,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:08,409 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 82 proven. 58 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2022-07-12 11:01:08,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:01:08,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510857775] [2022-07-12 11:01:08,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510857775] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:01:08,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356126391] [2022-07-12 11:01:08,410 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 11:01:08,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:01:08,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:01:08,411 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:01:08,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-07-12 11:01:09,114 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 11:01:09,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 11:01:09,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 3175 conjuncts, 54 conjunts are in the unsatisfiable core [2022-07-12 11:01:09,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:01:09,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:01:09,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:01:09,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:01:09,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:01:09,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:01:09,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:01:09,498 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-07-12 11:01:09,498 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 53 [2022-07-12 11:01:10,131 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 308 proven. 16 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-07-12 11:01:10,132 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 11:01:10,748 INFO L356 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-07-12 11:01:10,748 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2022-07-12 11:01:10,815 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 42 proven. 86 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2022-07-12 11:01:10,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356126391] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 11:01:10,815 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 11:01:10,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 14, 12] total 42 [2022-07-12 11:01:10,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871765746] [2022-07-12 11:01:10,815 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 11:01:10,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-07-12 11:01:10,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:01:10,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-07-12 11:01:10,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=1589, Unknown=0, NotChecked=0, Total=1722 [2022-07-12 11:01:10,817 INFO L87 Difference]: Start difference. First operand 1056 states and 1448 transitions. Second operand has 42 states, 38 states have (on average 5.052631578947368) internal successors, (192), 35 states have internal predecessors, (192), 14 states have call successors, (65), 9 states have call predecessors, (65), 10 states have return successors, (60), 12 states have call predecessors, (60), 13 states have call successors, (60) [2022-07-12 11:01:17,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:01:17,173 INFO L93 Difference]: Finished difference Result 1646 states and 2310 transitions. [2022-07-12 11:01:17,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-07-12 11:01:17,174 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 38 states have (on average 5.052631578947368) internal successors, (192), 35 states have internal predecessors, (192), 14 states have call successors, (65), 9 states have call predecessors, (65), 10 states have return successors, (60), 12 states have call predecessors, (60), 13 states have call successors, (60) Word has length 240 [2022-07-12 11:01:17,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:01:17,179 INFO L225 Difference]: With dead ends: 1646 [2022-07-12 11:01:17,179 INFO L226 Difference]: Without dead ends: 1155 [2022-07-12 11:01:17,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 616 GetRequests, 520 SyntacticMatches, 11 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1724 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=706, Invalid=6776, Unknown=0, NotChecked=0, Total=7482 [2022-07-12 11:01:17,182 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 390 mSDsluCounter, 1356 mSDsCounter, 0 mSdLazyCounter, 6996 mSolverCounterSat, 305 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 1574 SdHoareTripleChecker+Invalid, 8232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 305 IncrementalHoareTripleChecker+Valid, 6996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 931 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-07-12 11:01:17,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [431 Valid, 1574 Invalid, 8232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [305 Valid, 6996 Invalid, 0 Unknown, 931 Unchecked, 4.3s Time] [2022-07-12 11:01:17,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1155 states. [2022-07-12 11:01:17,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1155 to 1019. [2022-07-12 11:01:17,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1019 states, 695 states have (on average 1.1266187050359713) internal successors, (783), 707 states have internal predecessors, (783), 244 states have call successors, (244), 71 states have call predecessors, (244), 79 states have return successors, (396), 242 states have call predecessors, (396), 242 states have call successors, (396) [2022-07-12 11:01:17,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1019 states to 1019 states and 1423 transitions. [2022-07-12 11:01:17,252 INFO L78 Accepts]: Start accepts. Automaton has 1019 states and 1423 transitions. Word has length 240 [2022-07-12 11:01:17,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:01:17,252 INFO L495 AbstractCegarLoop]: Abstraction has 1019 states and 1423 transitions. [2022-07-12 11:01:17,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 38 states have (on average 5.052631578947368) internal successors, (192), 35 states have internal predecessors, (192), 14 states have call successors, (65), 9 states have call predecessors, (65), 10 states have return successors, (60), 12 states have call predecessors, (60), 13 states have call successors, (60) [2022-07-12 11:01:17,252 INFO L276 IsEmpty]: Start isEmpty. Operand 1019 states and 1423 transitions. [2022-07-12 11:01:17,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2022-07-12 11:01:17,256 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:01:17,256 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:01:17,281 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-07-12 11:01:17,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-07-12 11:01:17,481 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:01:17,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:01:17,481 INFO L85 PathProgramCache]: Analyzing trace with hash 340717258, now seen corresponding path program 1 times [2022-07-12 11:01:17,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:01:17,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119198407] [2022-07-12 11:01:17,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:01:17,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:01:17,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:17,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:01:17,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:17,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 11:01:17,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:17,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 11:01:17,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:17,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 11:01:17,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:17,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 11:01:17,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:17,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 11:01:17,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:17,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 11:01:17,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:17,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:01:17,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:17,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 11:01:17,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:17,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:01:17,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:17,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 11:01:17,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:17,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 11:01:17,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:17,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 11:01:17,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:17,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 11:01:17,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:17,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 11:01:17,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:17,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:01:17,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:17,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 11:01:17,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:17,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:01:17,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:18,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-12 11:01:18,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:18,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-12 11:01:18,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:18,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 11:01:18,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:18,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-12 11:01:18,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:18,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:01:18,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:18,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 11:01:18,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:18,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-07-12 11:01:18,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:18,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-07-12 11:01:18,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:18,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-07-12 11:01:18,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:18,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-07-12 11:01:18,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:18,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-12 11:01:18,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:18,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-07-12 11:01:18,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:18,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-07-12 11:01:18,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:18,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-07-12 11:01:18,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:18,131 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 31 proven. 23 refuted. 0 times theorem prover too weak. 430 trivial. 0 not checked. [2022-07-12 11:01:18,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:01:18,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119198407] [2022-07-12 11:01:18,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119198407] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:01:18,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64742808] [2022-07-12 11:01:18,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:01:18,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:01:18,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:01:18,133 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:01:18,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-07-12 11:01:18,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:18,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 3226 conjuncts, 100 conjunts are in the unsatisfiable core [2022-07-12 11:01:18,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:01:18,960 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 13 treesize of output 9 [2022-07-12 11:01:18,962 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9