./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 ff03de63 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-dev-ff03de6 [2021-12-21 15:30:37,495 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 15:30:37,498 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 15:30:37,533 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 15:30:37,537 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 15:30:37,538 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 15:30:37,539 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 15:30:37,540 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 15:30:37,542 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 15:30:37,544 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 15:30:37,545 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 15:30:37,545 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 15:30:37,547 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 15:30:37,549 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 15:30:37,549 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 15:30:37,551 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 15:30:37,552 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 15:30:37,554 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 15:30:37,555 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 15:30:37,559 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 15:30:37,560 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 15:30:37,561 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 15:30:37,562 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 15:30:37,562 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 15:30:37,564 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 15:30:37,564 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 15:30:37,564 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 15:30:37,565 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 15:30:37,565 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 15:30:37,566 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 15:30:37,566 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 15:30:37,566 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 15:30:37,567 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 15:30:37,567 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 15:30:37,568 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 15:30:37,568 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 15:30:37,569 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 15:30:37,569 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 15:30:37,569 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 15:30:37,570 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 15:30:37,570 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 15:30:37,571 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-21 15:30:37,588 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 15:30:37,592 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 15:30:37,593 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 15:30:37,593 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 15:30:37,594 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 15:30:37,594 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 15:30:37,594 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 15:30:37,594 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 15:30:37,595 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 15:30:37,595 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 15:30:37,595 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 15:30:37,596 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 15:30:37,596 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 15:30:37,596 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 15:30:37,596 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 15:30:37,596 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 15:30:37,596 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 15:30:37,596 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 15:30:37,597 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 15:30:37,597 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 15:30:37,597 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 15:30:37,597 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 15:30:37,597 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 15:30:37,597 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 15:30:37,598 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 15:30:37,598 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 15:30:37,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 15:30:37,598 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 15:30:37,598 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 15:30:37,598 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 15:30:37,598 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 15:30:37,598 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cab1c092802d28f475b8a467f14dab6a3f796dc1a4441d8517361eeec98aa4cb [2021-12-21 15:30:37,790 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 15:30:37,803 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 15:30:37,805 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 15:30:37,806 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 15:30:37,806 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 15:30:37,807 INFO L432 ainManager$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 [2021-12-21 15:30:37,843 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a3c63560/3e6a4ff7c10d43aa80e9b7ce2ec10caa/FLAG08dddce2b [2021-12-21 15:30:38,514 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 15:30:38,515 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 [2021-12-21 15:30:38,546 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a3c63560/3e6a4ff7c10d43aa80e9b7ce2ec10caa/FLAG08dddce2b [2021-12-21 15:30:38,890 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a3c63560/3e6a4ff7c10d43aa80e9b7ce2ec10caa [2021-12-21 15:30:38,892 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 15:30:38,893 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 15:30:38,894 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 15:30:38,894 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 15:30:38,896 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 15:30:38,896 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 03:30:38" (1/1) ... [2021-12-21 15:30:38,897 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f651e78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:30:38, skipping insertion in model container [2021-12-21 15:30:38,897 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 03:30:38" (1/1) ... [2021-12-21 15:30:38,902 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 15:30:38,949 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 15:30:39,133 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] [2021-12-21 15:30:39,140 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] [2021-12-21 15:30:39,591 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:30:39,592 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:30:39,592 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:30:39,593 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:30:39,593 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:30:39,606 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:30:39,606 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:30:39,608 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:30:39,608 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:30:39,853 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-21 15:30:39,860 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-21 15:30:39,861 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-21 15:30:39,862 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-21 15:30:39,865 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-21 15:30:39,868 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-21 15:30:39,869 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-21 15:30:39,870 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-21 15:30:39,872 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-21 15:30:39,874 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-21 15:30:39,972 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-21 15:30:40,041 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:30:40,042 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:30:40,098 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 15:30:40,144 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 15:30:40,161 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] [2021-12-21 15:30:40,162 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] [2021-12-21 15:30:40,206 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:30:40,206 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:30:40,207 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:30:40,207 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:30:40,208 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:30:40,219 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:30:40,221 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:30:40,221 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:30:40,222 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:30:40,273 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-21 15:30:40,274 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-21 15:30:40,275 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-21 15:30:40,275 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-21 15:30:40,276 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-21 15:30:40,277 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-21 15:30:40,277 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-21 15:30:40,278 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-21 15:30:40,278 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-21 15:30:40,278 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-21 15:30:40,300 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-21 15:30:40,337 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:30:40,338 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:30:40,375 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 15:30:40,518 INFO L208 MainTranslator]: Completed translation [2021-12-21 15:30:40,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:30:40 WrapperNode [2021-12-21 15:30:40,519 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 15:30:40,520 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 15:30:40,520 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 15:30:40,520 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 15:30:40,525 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:30:40" (1/1) ... [2021-12-21 15:30:40,597 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:30:40" (1/1) ... [2021-12-21 15:30:40,670 INFO L137 Inliner]: procedures = 691, calls = 2668, calls flagged for inlining = 58, calls inlined = 5, statements flattened = 900 [2021-12-21 15:30:40,671 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 15:30:40,671 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 15:30:40,671 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 15:30:40,672 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 15:30:40,677 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:30:40" (1/1) ... [2021-12-21 15:30:40,678 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:30:40" (1/1) ... [2021-12-21 15:30:40,696 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:30:40" (1/1) ... [2021-12-21 15:30:40,696 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:30:40" (1/1) ... [2021-12-21 15:30:40,736 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:30:40" (1/1) ... [2021-12-21 15:30:40,747 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:30:40" (1/1) ... [2021-12-21 15:30:40,753 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:30:40" (1/1) ... [2021-12-21 15:30:40,776 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 15:30:40,777 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 15:30:40,777 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 15:30:40,777 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 15:30:40,781 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:30:40" (1/1) ... [2021-12-21 15:30:40,801 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 15:30:40,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:30:40,824 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-21 15:30:40,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-21 15:30:40,852 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2021-12-21 15:30:40,852 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2021-12-21 15:30:40,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 15:30:40,853 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-12-21 15:30:40,853 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-12-21 15:30:40,853 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-21 15:30:40,853 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-21 15:30:40,854 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-21 15:30:40,854 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-21 15:30:40,854 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 15:30:40,854 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2021-12-21 15:30:40,855 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2021-12-21 15:30:40,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-21 15:30:40,855 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2021-12-21 15:30:40,856 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2021-12-21 15:30:40,856 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_byte_buf_has_allocated_buffer_member [2021-12-21 15:30:40,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_byte_buf_has_allocated_buffer_member [2021-12-21 15:30:40,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 15:30:40,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 15:30:40,856 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-21 15:30:40,856 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-21 15:30:40,856 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-12-21 15:30:40,856 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-12-21 15:30:40,857 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_size_t [2021-12-21 15:30:40,857 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_size_t [2021-12-21 15:30:40,857 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-21 15:30:40,857 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-21 15:30:40,857 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2021-12-21 15:30:40,858 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2021-12-21 15:30:40,858 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-21 15:30:40,858 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-21 15:30:40,858 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_write [2021-12-21 15:30:40,858 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_write [2021-12-21 15:30:40,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-21 15:30:40,859 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-12-21 15:30:40,859 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-12-21 15:30:40,859 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-12-21 15:30:40,859 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-12-21 15:30:40,859 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_bounded [2021-12-21 15:30:40,859 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_bounded [2021-12-21 15:30:40,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-21 15:30:40,859 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_buf_equivalence [2021-12-21 15:30:40,860 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_buf_equivalence [2021-12-21 15:30:40,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 15:30:41,142 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 15:30:41,143 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 15:30:42,019 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 15:30:42,026 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 15:30:42,026 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-21 15:30:42,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 03:30:42 BoogieIcfgContainer [2021-12-21 15:30:42,028 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 15:30:42,030 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 15:30:42,030 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 15:30:42,033 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 15:30:42,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 03:30:38" (1/3) ... [2021-12-21 15:30:42,033 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1eed1d21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 03:30:42, skipping insertion in model container [2021-12-21 15:30:42,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:30:40" (2/3) ... [2021-12-21 15:30:42,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1eed1d21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 03:30:42, skipping insertion in model container [2021-12-21 15:30:42,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 03:30:42" (3/3) ... [2021-12-21 15:30:42,035 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_write_from_whole_buffer_harness-1.i [2021-12-21 15:30:42,039 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 15:30:42,039 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 15:30:42,092 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 15:30:42,102 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-21 15:30:42,103 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 15:30:42,119 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) [2021-12-21 15:30:42,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-12-21 15:30:42,131 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:30:42,131 INFO L514 BasicCegarLoop]: 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] [2021-12-21 15:30:42,132 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:30:42,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:30:42,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1514198340, now seen corresponding path program 1 times [2021-12-21 15:30:42,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:30:42,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750636541] [2021-12-21 15:30:42,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:30:42,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:30:42,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:42,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:30:42,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:42,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 15:30:42,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:42,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 15:30:42,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:42,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 15:30:42,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:42,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 15:30:42,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:42,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-21 15:30:42,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:42,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 15:30:42,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:42,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:30:42,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:42,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 15:30:42,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:42,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:30:42,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:42,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 15:30:42,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:42,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-21 15:30:42,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:42,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-21 15:30:42,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:42,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-21 15:30:42,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:42,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-21 15:30:42,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:42,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:30:42,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:42,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 15:30:42,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:42,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:30:42,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:42,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-21 15:30:42,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:42,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-21 15:30:42,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:42,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-21 15:30:42,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:42,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-21 15:30:42,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:42,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-21 15:30:42,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:42,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-21 15:30:42,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:42,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-21 15:30:42,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:42,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-21 15:30:42,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:42,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-21 15:30:42,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:42,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-21 15:30:42,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:42,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-12-21 15:30:42,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:42,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-12-21 15:30:42,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:42,887 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2021-12-21 15:30:42,887 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:30:42,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750636541] [2021-12-21 15:30:42,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750636541] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:30:42,888 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:30:42,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 15:30:42,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980733030] [2021-12-21 15:30:42,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:30:42,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 15:30:42,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:30:42,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 15:30:42,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 15:30:42,935 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) [2021-12-21 15:30:43,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:30:43,318 INFO L93 Difference]: Finished difference Result 374 states and 536 transitions. [2021-12-21 15:30:43,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 15:30:43,320 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 [2021-12-21 15:30:43,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:30:43,327 INFO L225 Difference]: With dead ends: 374 [2021-12-21 15:30:43,327 INFO L226 Difference]: Without dead ends: 194 [2021-12-21 15:30:43,330 INFO L932 BasicCegarLoop]: 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 [2021-12-21 15:30:43,332 INFO L933 BasicCegarLoop]: 202 mSDtfsCounter, 179 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 [2021-12-21 15:30:43,333 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [200 Valid, 259 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-21 15:30:43,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-12-21 15:30:43,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 182. [2021-12-21 15:30:43,367 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) [2021-12-21 15:30:43,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 242 transitions. [2021-12-21 15:30:43,370 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 242 transitions. Word has length 176 [2021-12-21 15:30:43,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:30:43,370 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 242 transitions. [2021-12-21 15:30:43,370 INFO L471 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) [2021-12-21 15:30:43,371 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 242 transitions. [2021-12-21 15:30:43,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-12-21 15:30:43,374 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:30:43,374 INFO L514 BasicCegarLoop]: 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] [2021-12-21 15:30:43,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 15:30:43,374 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:30:43,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:30:43,375 INFO L85 PathProgramCache]: Analyzing trace with hash 606096116, now seen corresponding path program 1 times [2021-12-21 15:30:43,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:30:43,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008259800] [2021-12-21 15:30:43,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:30:43,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:30:43,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:43,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:30:43,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:43,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 15:30:43,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:43,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 15:30:43,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:43,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 15:30:43,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:43,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 15:30:43,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:43,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-21 15:30:43,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:43,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 15:30:43,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:43,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:30:43,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:43,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 15:30:43,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:43,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:30:43,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:43,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 15:30:43,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:43,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-21 15:30:43,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:43,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-21 15:30:43,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:43,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-21 15:30:43,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:43,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-21 15:30:43,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:43,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:30:43,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:43,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 15:30:43,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:43,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:30:43,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:43,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-21 15:30:43,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:43,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-21 15:30:43,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:43,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-21 15:30:43,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:43,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-21 15:30:43,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:43,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-21 15:30:43,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:43,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-21 15:30:43,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:43,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-21 15:30:43,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:43,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-21 15:30:43,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:43,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-21 15:30:43,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:43,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-21 15:30:43,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:43,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-12-21 15:30:43,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:43,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-12-21 15:30:43,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:43,793 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2021-12-21 15:30:43,793 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:30:43,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008259800] [2021-12-21 15:30:43,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008259800] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:30:43,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097179718] [2021-12-21 15:30:43,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:30:43,794 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:30:43,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:30:43,795 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:30:43,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-21 15:30:44,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:44,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 3020 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-21 15:30:44,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:30:44,671 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2021-12-21 15:30:44,671 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:30:44,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097179718] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:30:44,671 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 15:30:44,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2021-12-21 15:30:44,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094677330] [2021-12-21 15:30:44,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:30:44,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 15:30:44,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:30:44,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 15:30:44,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-12-21 15:30:44,674 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) [2021-12-21 15:30:44,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:30:44,870 INFO L93 Difference]: Finished difference Result 352 states and 472 transitions. [2021-12-21 15:30:44,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 15:30:44,870 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 [2021-12-21 15:30:44,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:30:44,872 INFO L225 Difference]: With dead ends: 352 [2021-12-21 15:30:44,872 INFO L226 Difference]: Without dead ends: 185 [2021-12-21 15:30:44,873 INFO L932 BasicCegarLoop]: 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 [2021-12-21 15:30:44,874 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 256 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 15:30:44,874 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [259 Valid, 543 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 15:30:44,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-12-21 15:30:44,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2021-12-21 15:30:44,886 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) [2021-12-21 15:30:44,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 251 transitions. [2021-12-21 15:30:44,888 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 251 transitions. Word has length 176 [2021-12-21 15:30:44,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:30:44,888 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 251 transitions. [2021-12-21 15:30:44,889 INFO L471 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) [2021-12-21 15:30:44,889 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 251 transitions. [2021-12-21 15:30:44,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-12-21 15:30:44,900 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:30:44,900 INFO L514 BasicCegarLoop]: 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] [2021-12-21 15:30:44,924 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-21 15:30:45,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:30:45,120 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:30:45,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:30:45,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1545774441, now seen corresponding path program 1 times [2021-12-21 15:30:45,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:30:45,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978365662] [2021-12-21 15:30:45,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:30:45,121 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:30:45,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:45,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:30:45,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:45,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 15:30:45,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:45,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 15:30:45,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:45,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 15:30:45,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:45,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 15:30:45,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:45,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-21 15:30:45,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:45,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 15:30:45,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:45,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:30:45,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:45,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 15:30:45,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:45,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:30:45,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:45,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 15:30:45,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:45,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-21 15:30:45,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:45,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-21 15:30:45,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:45,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-21 15:30:45,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:45,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-21 15:30:45,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:45,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:30:45,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:45,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 15:30:45,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:45,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:30:45,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:45,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-21 15:30:45,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:45,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-21 15:30:45,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:45,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-21 15:30:45,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:45,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-21 15:30:45,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:45,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-21 15:30:45,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:45,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-21 15:30:45,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:45,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-21 15:30:45,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:45,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-21 15:30:45,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:45,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-21 15:30:45,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:45,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-12-21 15:30:45,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:45,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-21 15:30:45,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:45,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-12-21 15:30:45,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:45,512 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2021-12-21 15:30:45,513 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:30:45,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978365662] [2021-12-21 15:30:45,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978365662] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:30:45,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238980022] [2021-12-21 15:30:45,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:30:45,513 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:30:45,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:30:45,514 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:30:45,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-21 15:30:45,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:45,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 3037 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-21 15:30:45,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:30:46,234 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 144 proven. 12 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2021-12-21 15:30:46,234 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 15:30:46,561 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2021-12-21 15:30:46,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238980022] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 15:30:46,562 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 15:30:46,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 14 [2021-12-21 15:30:46,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680512847] [2021-12-21 15:30:46,562 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 15:30:46,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-21 15:30:46,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:30:46,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-21 15:30:46,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-12-21 15:30:46,564 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) [2021-12-21 15:30:47,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:30:47,349 INFO L93 Difference]: Finished difference Result 336 states and 456 transitions. [2021-12-21 15:30:47,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 15:30:47,350 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 [2021-12-21 15:30:47,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:30:47,351 INFO L225 Difference]: With dead ends: 336 [2021-12-21 15:30:47,351 INFO L226 Difference]: Without dead ends: 197 [2021-12-21 15:30:47,352 INFO L932 BasicCegarLoop]: 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 [2021-12-21 15:30:47,352 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 466 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 736 mSolverCounterSat, 401 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 1137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 401 IncrementalHoareTripleChecker+Valid, 736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-21 15:30:47,353 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [466 Valid, 490 Invalid, 1137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [401 Valid, 736 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-21 15:30:47,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-12-21 15:30:47,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 185. [2021-12-21 15:30:47,375 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) [2021-12-21 15:30:47,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 249 transitions. [2021-12-21 15:30:47,377 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 249 transitions. Word has length 182 [2021-12-21 15:30:47,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:30:47,378 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 249 transitions. [2021-12-21 15:30:47,378 INFO L471 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) [2021-12-21 15:30:47,379 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 249 transitions. [2021-12-21 15:30:47,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-12-21 15:30:47,383 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:30:47,383 INFO L514 BasicCegarLoop]: 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] [2021-12-21 15:30:47,406 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-21 15:30:47,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-12-21 15:30:47,595 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:30:47,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:30:47,596 INFO L85 PathProgramCache]: Analyzing trace with hash 2124831764, now seen corresponding path program 2 times [2021-12-21 15:30:47,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:30:47,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006199922] [2021-12-21 15:30:47,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:30:47,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:30:47,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:47,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:30:47,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:47,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 15:30:47,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:47,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 15:30:47,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:47,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 15:30:47,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:47,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 15:30:47,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:47,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-21 15:30:47,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:47,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 15:30:47,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:47,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:30:47,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:47,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 15:30:47,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:47,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:30:47,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:47,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 15:30:47,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:47,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-21 15:30:47,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:47,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-21 15:30:47,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:47,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-21 15:30:47,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:47,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-21 15:30:47,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:47,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:30:47,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:47,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 15:30:47,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:47,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:30:47,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:47,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-21 15:30:47,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:47,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-21 15:30:47,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:47,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-21 15:30:47,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:47,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-21 15:30:47,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:47,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-21 15:30:47,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:48,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-21 15:30:48,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:48,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-21 15:30:48,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:48,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-21 15:30:48,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:48,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-12-21 15:30:48,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:48,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-21 15:30:48,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:48,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-12-21 15:30:48,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:48,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-12-21 15:30:48,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:48,036 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 4 proven. 38 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2021-12-21 15:30:48,036 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:30:48,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006199922] [2021-12-21 15:30:48,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006199922] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:30:48,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073148839] [2021-12-21 15:30:48,036 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-21 15:30:48,036 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:30:48,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:30:48,037 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:30:48,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-21 15:30:48,467 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-21 15:30:48,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 15:30:48,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 3054 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-21 15:30:48,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:30:48,859 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2021-12-21 15:30:48,859 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:30:48,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073148839] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:30:48,859 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 15:30:48,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 20 [2021-12-21 15:30:48,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934037969] [2021-12-21 15:30:48,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:30:48,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 15:30:48,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:30:48,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 15:30:48,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2021-12-21 15:30:48,861 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) [2021-12-21 15:30:49,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:30:49,177 INFO L93 Difference]: Finished difference Result 306 states and 416 transitions. [2021-12-21 15:30:49,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 15:30:49,178 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 [2021-12-21 15:30:49,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:30:49,180 INFO L225 Difference]: With dead ends: 306 [2021-12-21 15:30:49,180 INFO L226 Difference]: Without dead ends: 185 [2021-12-21 15:30:49,180 INFO L932 BasicCegarLoop]: 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 [2021-12-21 15:30:49,181 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 279 mSDsluCounter, 1003 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 1185 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 15:30:49,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [279 Valid, 1185 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 15:30:49,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-12-21 15:30:49,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2021-12-21 15:30:49,203 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) [2021-12-21 15:30:49,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 245 transitions. [2021-12-21 15:30:49,206 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 245 transitions. Word has length 188 [2021-12-21 15:30:49,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:30:49,207 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 245 transitions. [2021-12-21 15:30:49,207 INFO L471 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) [2021-12-21 15:30:49,208 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 245 transitions. [2021-12-21 15:30:49,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2021-12-21 15:30:49,210 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:30:49,211 INFO L514 BasicCegarLoop]: 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] [2021-12-21 15:30:49,235 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-21 15:30:49,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:30:49,432 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:30:49,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:30:49,432 INFO L85 PathProgramCache]: Analyzing trace with hash -806726443, now seen corresponding path program 3 times [2021-12-21 15:30:49,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:30:49,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509558646] [2021-12-21 15:30:49,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:30:49,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:30:49,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:49,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:30:49,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:49,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 15:30:49,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:49,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 15:30:49,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:49,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 15:30:49,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:49,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 15:30:49,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:49,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-21 15:30:49,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:49,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 15:30:49,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:49,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:30:49,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:49,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 15:30:49,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:49,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:30:49,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:49,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 15:30:49,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:49,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-21 15:30:49,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:49,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-21 15:30:49,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:49,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-21 15:30:49,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:49,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-21 15:30:49,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:49,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:30:49,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:49,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 15:30:49,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:49,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:30:49,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:49,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-21 15:30:49,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:49,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-21 15:30:49,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:49,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-21 15:30:49,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:49,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-21 15:30:49,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:49,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-21 15:30:49,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:49,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-21 15:30:49,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:49,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-21 15:30:49,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:49,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-21 15:30:49,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:49,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-21 15:30:49,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:49,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-12-21 15:30:49,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:49,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-21 15:30:49,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:49,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-12-21 15:30:49,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:49,750 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2021-12-21 15:30:49,751 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:30:49,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509558646] [2021-12-21 15:30:49,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509558646] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:30:49,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401934785] [2021-12-21 15:30:49,751 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-21 15:30:49,751 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:30:49,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:30:49,752 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:30:49,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-21 15:30:50,103 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-12-21 15:30:50,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 15:30:50,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 2325 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-21 15:30:50,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:30:50,428 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2021-12-21 15:30:50,428 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:30:50,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401934785] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:30:50,429 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 15:30:50,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2021-12-21 15:30:50,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711636209] [2021-12-21 15:30:50,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:30:50,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 15:30:50,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:30:50,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 15:30:50,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-12-21 15:30:50,430 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) [2021-12-21 15:30:50,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:30:50,496 INFO L93 Difference]: Finished difference Result 197 states and 265 transitions. [2021-12-21 15:30:50,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 15:30:50,496 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 [2021-12-21 15:30:50,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:30:50,498 INFO L225 Difference]: With dead ends: 197 [2021-12-21 15:30:50,498 INFO L226 Difference]: Without dead ends: 195 [2021-12-21 15:30:50,498 INFO L932 BasicCegarLoop]: 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 [2021-12-21 15:30:50,499 INFO L933 BasicCegarLoop]: 241 mSDtfsCounter, 22 mSDsluCounter, 1403 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 1644 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 15:30:50,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 1644 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 15:30:50,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-12-21 15:30:50,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 194. [2021-12-21 15:30:50,508 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) [2021-12-21 15:30:50,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 262 transitions. [2021-12-21 15:30:50,510 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 262 transitions. Word has length 206 [2021-12-21 15:30:50,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:30:50,510 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 262 transitions. [2021-12-21 15:30:50,511 INFO L471 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) [2021-12-21 15:30:50,511 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 262 transitions. [2021-12-21 15:30:50,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-12-21 15:30:50,512 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:30:50,513 INFO L514 BasicCegarLoop]: 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] [2021-12-21 15:30:50,536 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-21 15:30:50,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:30:50,727 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:30:50,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:30:50,728 INFO L85 PathProgramCache]: Analyzing trace with hash 2116281437, now seen corresponding path program 1 times [2021-12-21 15:30:50,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:30:50,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762277859] [2021-12-21 15:30:50,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:30:50,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:30:50,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:50,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:30:50,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:50,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 15:30:50,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:50,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 15:30:50,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:50,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 15:30:50,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:50,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 15:30:50,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:50,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-21 15:30:50,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:50,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 15:30:50,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:50,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:30:50,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:50,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 15:30:50,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:50,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:30:50,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:50,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 15:30:50,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:50,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-21 15:30:50,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:50,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-21 15:30:50,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:50,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-21 15:30:50,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:50,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-21 15:30:50,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:50,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:30:50,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:50,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 15:30:50,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:50,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:30:50,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:50,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-21 15:30:50,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:50,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-21 15:30:50,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:50,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-21 15:30:50,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:50,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-21 15:30:50,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:50,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-21 15:30:51,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:51,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-21 15:30:51,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:51,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-21 15:30:51,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:51,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-21 15:30:51,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:51,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-21 15:30:51,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:51,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-12-21 15:30:51,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:51,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-21 15:30:51,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:51,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-12-21 15:30:51,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:51,066 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2021-12-21 15:30:51,066 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:30:51,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762277859] [2021-12-21 15:30:51,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762277859] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:30:51,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048597291] [2021-12-21 15:30:51,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:30:51,067 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:30:51,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:30:51,068 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:30:51,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-21 15:30:51,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:51,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 3117 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-21 15:30:51,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:30:51,882 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 164 proven. 56 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-12-21 15:30:51,882 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 15:30:52,214 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2021-12-21 15:30:52,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1048597291] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 15:30:52,214 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 15:30:52,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 14 [2021-12-21 15:30:52,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732370608] [2021-12-21 15:30:52,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 15:30:52,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-21 15:30:52,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:30:52,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-21 15:30:52,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-12-21 15:30:52,216 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) [2021-12-21 15:30:52,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:30:52,836 INFO L93 Difference]: Finished difference Result 333 states and 446 transitions. [2021-12-21 15:30:52,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 15:30:52,836 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 [2021-12-21 15:30:52,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:30:52,837 INFO L225 Difference]: With dead ends: 333 [2021-12-21 15:30:52,838 INFO L226 Difference]: Without dead ends: 203 [2021-12-21 15:30:52,838 INFO L932 BasicCegarLoop]: 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 [2021-12-21 15:30:52,838 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 276 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 605 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 583 SdHoareTripleChecker+Invalid, 786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-21 15:30:52,839 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [288 Valid, 583 Invalid, 786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 605 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-21 15:30:52,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2021-12-21 15:30:52,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 191. [2021-12-21 15:30:52,854 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) [2021-12-21 15:30:52,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 258 transitions. [2021-12-21 15:30:52,855 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 258 transitions. Word has length 210 [2021-12-21 15:30:52,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:30:52,856 INFO L470 AbstractCegarLoop]: Abstraction has 191 states and 258 transitions. [2021-12-21 15:30:52,856 INFO L471 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) [2021-12-21 15:30:52,856 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 258 transitions. [2021-12-21 15:30:52,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2021-12-21 15:30:52,857 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:30:52,858 INFO L514 BasicCegarLoop]: 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] [2021-12-21 15:30:52,891 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-21 15:30:53,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:30:53,080 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:30:53,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:30:53,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1227624248, now seen corresponding path program 1 times [2021-12-21 15:30:53,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:30:53,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10992298] [2021-12-21 15:30:53,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:30:53,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:30:53,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:53,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:30:53,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:53,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 15:30:53,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:53,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 15:30:53,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:53,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 15:30:53,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:53,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 15:30:53,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:53,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-21 15:30:53,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:53,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 15:30:53,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:53,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:30:53,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:53,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 15:30:53,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:53,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:30:53,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:53,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 15:30:53,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:53,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-21 15:30:53,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:53,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-21 15:30:53,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:53,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-21 15:30:53,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:53,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-21 15:30:53,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:53,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:30:53,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:53,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 15:30:53,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:53,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:30:53,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:53,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-21 15:30:53,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:53,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-21 15:30:53,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:53,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-21 15:30:53,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:53,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-21 15:30:53,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:53,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-21 15:30:53,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:53,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-21 15:30:53,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:53,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-21 15:30:53,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:53,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-21 15:30:53,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:53,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-12-21 15:30:53,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:53,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-21 15:30:53,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:53,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-21 15:30:53,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:53,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-12-21 15:30:53,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:53,747 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 341 trivial. 0 not checked. [2021-12-21 15:30:53,747 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:30:53,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10992298] [2021-12-21 15:30:53,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10992298] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:30:53,748 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:30:53,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 15:30:53,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970397630] [2021-12-21 15:30:53,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:30:53,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 15:30:53,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:30:53,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 15:30:53,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-21 15:30:53,750 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) [2021-12-21 15:30:54,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:30:54,355 INFO L93 Difference]: Finished difference Result 404 states and 564 transitions. [2021-12-21 15:30:54,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 15:30:54,356 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 [2021-12-21 15:30:54,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:30:54,357 INFO L225 Difference]: With dead ends: 404 [2021-12-21 15:30:54,357 INFO L226 Difference]: Without dead ends: 228 [2021-12-21 15:30:54,358 INFO L932 BasicCegarLoop]: 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 [2021-12-21 15:30:54,359 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 260 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 615 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-21 15:30:54,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [284 Valid, 502 Invalid, 764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 615 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-21 15:30:54,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2021-12-21 15:30:54,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 196. [2021-12-21 15:30:54,374 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) [2021-12-21 15:30:54,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 265 transitions. [2021-12-21 15:30:54,375 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 265 transitions. Word has length 216 [2021-12-21 15:30:54,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:30:54,390 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 265 transitions. [2021-12-21 15:30:54,390 INFO L471 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) [2021-12-21 15:30:54,390 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 265 transitions. [2021-12-21 15:30:54,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2021-12-21 15:30:54,391 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:30:54,391 INFO L514 BasicCegarLoop]: 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] [2021-12-21 15:30:54,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-21 15:30:54,391 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:30:54,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:30:54,392 INFO L85 PathProgramCache]: Analyzing trace with hash -969458810, now seen corresponding path program 1 times [2021-12-21 15:30:54,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:30:54,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605660266] [2021-12-21 15:30:54,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:30:54,392 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:30:54,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:54,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:30:54,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:54,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 15:30:54,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:54,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 15:30:54,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:54,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 15:30:54,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:54,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 15:30:54,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:54,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-21 15:30:54,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:54,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 15:30:54,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:54,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:30:54,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:54,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 15:30:54,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:54,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:30:54,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:54,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 15:30:54,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:54,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-21 15:30:54,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:54,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-21 15:30:54,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:54,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-21 15:30:54,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:54,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-21 15:30:54,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:54,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:30:54,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:54,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 15:30:54,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:54,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:30:54,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:54,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-21 15:30:54,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:54,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-21 15:30:54,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:54,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-21 15:30:54,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:54,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-21 15:30:54,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:54,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-21 15:30:54,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:54,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-21 15:30:54,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:54,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-21 15:30:54,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:55,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-21 15:30:55,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:55,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-12-21 15:30:55,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:55,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-21 15:30:55,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:55,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-21 15:30:55,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:55,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-12-21 15:30:55,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:55,112 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 60 proven. 20 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2021-12-21 15:30:55,112 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:30:55,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605660266] [2021-12-21 15:30:55,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605660266] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:30:55,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556461181] [2021-12-21 15:30:55,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:30:55,113 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:30:55,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:30:55,114 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:30:55,116 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-21 15:30:55,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:55,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 3129 conjuncts, 30 conjunts are in the unsatisfiable core [2021-12-21 15:30:55,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:30:55,757 INFO L387 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 [2021-12-21 15:30:56,218 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2021-12-21 15:30:56,218 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:30:56,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1556461181] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:30:56,218 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 15:30:56,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [15] total 26 [2021-12-21 15:30:56,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558608174] [2021-12-21 15:30:56,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:30:56,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-21 15:30:56,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:30:56,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-21 15:30:56,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=586, Unknown=0, NotChecked=0, Total=650 [2021-12-21 15:30:56,220 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) [2021-12-21 15:30:56,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:30:56,357 INFO L93 Difference]: Finished difference Result 400 states and 535 transitions. [2021-12-21 15:30:56,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-21 15:30:56,357 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 [2021-12-21 15:30:56,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:30:56,358 INFO L225 Difference]: With dead ends: 400 [2021-12-21 15:30:56,358 INFO L226 Difference]: Without dead ends: 215 [2021-12-21 15:30:56,359 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=68, Invalid=634, Unknown=0, NotChecked=0, Total=702 [2021-12-21 15:30:56,360 INFO L933 BasicCegarLoop]: 233 mSDtfsCounter, 25 mSDsluCounter, 2125 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 2358 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 151 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 15:30:56,360 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 2358 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 101 Invalid, 0 Unknown, 151 Unchecked, 0.1s Time] [2021-12-21 15:30:56,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-12-21 15:30:56,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2021-12-21 15:30:56,367 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) [2021-12-21 15:30:56,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 288 transitions. [2021-12-21 15:30:56,369 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 288 transitions. Word has length 216 [2021-12-21 15:30:56,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:30:56,369 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 288 transitions. [2021-12-21 15:30:56,369 INFO L471 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) [2021-12-21 15:30:56,369 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 288 transitions. [2021-12-21 15:30:56,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2021-12-21 15:30:56,370 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:30:56,370 INFO L514 BasicCegarLoop]: 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] [2021-12-21 15:30:56,393 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-21 15:30:56,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:30:56,587 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:30:56,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:30:56,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1130279620, now seen corresponding path program 1 times [2021-12-21 15:30:56,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:30:56,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861599550] [2021-12-21 15:30:56,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:30:56,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:30:56,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:56,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:30:56,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:56,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 15:30:56,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:56,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 15:30:56,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:56,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 15:30:56,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:56,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 15:30:56,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:56,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-21 15:30:56,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:56,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 15:30:56,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:56,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:30:56,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:56,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 15:30:56,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:56,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:30:56,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:56,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 15:30:56,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:56,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-21 15:30:56,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:56,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-21 15:30:56,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:56,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-21 15:30:56,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:56,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-21 15:30:56,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:56,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:30:56,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:56,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 15:30:56,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:56,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:30:56,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:56,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-21 15:30:56,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:56,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-21 15:30:56,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:56,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-21 15:30:56,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:56,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-21 15:30:56,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:56,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-21 15:30:56,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:56,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-21 15:30:56,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:56,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-21 15:30:56,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:56,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-21 15:30:56,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:56,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-12-21 15:30:56,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:56,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-21 15:30:56,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:56,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-21 15:30:56,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:56,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-12-21 15:30:56,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:56,896 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2021-12-21 15:30:56,896 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:30:56,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861599550] [2021-12-21 15:30:56,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861599550] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:30:56,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833874683] [2021-12-21 15:30:56,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:30:56,897 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:30:56,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:30:56,898 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:30:56,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-21 15:30:57,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:57,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 3124 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-21 15:30:57,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:30:57,616 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 118 proven. 0 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2021-12-21 15:30:57,616 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:30:57,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1833874683] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:30:57,616 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 15:30:57,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 7 [2021-12-21 15:30:57,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879950738] [2021-12-21 15:30:57,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:30:57,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 15:30:57,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:30:57,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 15:30:57,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-21 15:30:57,617 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) [2021-12-21 15:30:57,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:30:57,644 INFO L93 Difference]: Finished difference Result 409 states and 556 transitions. [2021-12-21 15:30:57,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 15:30:57,644 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 [2021-12-21 15:30:57,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:30:57,645 INFO L225 Difference]: With dead ends: 409 [2021-12-21 15:30:57,645 INFO L226 Difference]: Without dead ends: 224 [2021-12-21 15:30:57,646 INFO L932 BasicCegarLoop]: 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 [2021-12-21 15:30:57,646 INFO L933 BasicCegarLoop]: 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 [2021-12-21 15:30:57,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 715 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 15:30:57,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2021-12-21 15:30:57,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 207. [2021-12-21 15:30:57,654 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) [2021-12-21 15:30:57,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 278 transitions. [2021-12-21 15:30:57,655 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 278 transitions. Word has length 216 [2021-12-21 15:30:57,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:30:57,655 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 278 transitions. [2021-12-21 15:30:57,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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) [2021-12-21 15:30:57,656 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 278 transitions. [2021-12-21 15:30:57,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2021-12-21 15:30:57,657 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:30:57,657 INFO L514 BasicCegarLoop]: 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] [2021-12-21 15:30:57,678 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-21 15:30:57,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:30:57,878 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:30:57,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:30:57,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1998809472, now seen corresponding path program 2 times [2021-12-21 15:30:57,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:30:57,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034590703] [2021-12-21 15:30:57,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:30:57,879 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:30:58,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:58,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:30:58,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:58,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 15:30:58,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:58,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 15:30:58,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:58,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 15:30:58,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:58,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 15:30:58,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:58,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-21 15:30:58,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:58,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 15:30:58,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:58,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:30:58,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:58,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 15:30:58,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:58,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:30:58,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:58,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 15:30:58,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:58,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-21 15:30:58,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:58,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-21 15:30:58,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:58,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-21 15:30:58,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:58,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-21 15:30:58,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:58,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:30:58,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:58,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 15:30:58,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:58,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:30:58,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:58,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-21 15:30:58,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:58,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-21 15:30:58,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:58,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-21 15:30:58,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:58,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-21 15:30:58,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:58,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-21 15:30:58,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:58,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-21 15:30:58,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:58,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-21 15:30:58,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:58,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-12-21 15:30:58,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:58,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-12-21 15:30:58,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:58,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-21 15:30:58,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:58,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-12-21 15:30:58,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:58,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-12-21 15:30:58,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:58,276 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 6 proven. 42 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2021-12-21 15:30:58,276 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:30:58,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034590703] [2021-12-21 15:30:58,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034590703] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:30:58,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596711670] [2021-12-21 15:30:58,277 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-21 15:30:58,277 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:30:58,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:30:58,278 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:30:58,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-21 15:30:59,218 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-21 15:30:59,218 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 15:30:59,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 3136 conjuncts, 38 conjunts are in the unsatisfiable core [2021-12-21 15:30:59,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:30:59,429 INFO L387 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 [2021-12-21 15:30:59,833 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 212 proven. 0 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2021-12-21 15:30:59,834 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:30:59,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1596711670] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:30:59,834 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 15:30:59,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [12] total 23 [2021-12-21 15:30:59,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437044441] [2021-12-21 15:30:59,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:30:59,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-21 15:30:59,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:30:59,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-21 15:30:59,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2021-12-21 15:30:59,836 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) [2021-12-21 15:30:59,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:30:59,946 INFO L93 Difference]: Finished difference Result 387 states and 519 transitions. [2021-12-21 15:30:59,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-21 15:30:59,947 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 [2021-12-21 15:30:59,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:30:59,948 INFO L225 Difference]: With dead ends: 387 [2021-12-21 15:30:59,948 INFO L226 Difference]: Without dead ends: 229 [2021-12-21 15:30:59,949 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=494, Unknown=0, NotChecked=0, Total=552 [2021-12-21 15:30:59,949 INFO L933 BasicCegarLoop]: 250 mSDtfsCounter, 24 mSDsluCounter, 1559 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 1809 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 112 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 15:30:59,950 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 1809 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 112 Unchecked, 0.1s Time] [2021-12-21 15:30:59,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2021-12-21 15:30:59,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 207. [2021-12-21 15:30:59,956 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) [2021-12-21 15:30:59,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 277 transitions. [2021-12-21 15:30:59,958 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 277 transitions. Word has length 220 [2021-12-21 15:30:59,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:30:59,958 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 277 transitions. [2021-12-21 15:30:59,958 INFO L471 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) [2021-12-21 15:30:59,958 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 277 transitions. [2021-12-21 15:30:59,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2021-12-21 15:30:59,959 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:30:59,960 INFO L514 BasicCegarLoop]: 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] [2021-12-21 15:30:59,984 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-21 15:31:00,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-21 15:31:00,167 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:31:00,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:31:00,168 INFO L85 PathProgramCache]: Analyzing trace with hash 2120990534, now seen corresponding path program 3 times [2021-12-21 15:31:00,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:31:00,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155366599] [2021-12-21 15:31:00,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:31:00,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:31:00,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:00,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:31:00,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:00,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 15:31:00,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:00,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 15:31:00,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:00,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 15:31:00,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:00,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 15:31:00,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:00,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-21 15:31:00,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:00,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 15:31:00,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:00,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:31:00,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:00,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 15:31:00,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:00,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:31:00,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:00,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 15:31:00,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:00,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-21 15:31:00,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:00,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-21 15:31:00,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:00,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-21 15:31:00,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:00,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-21 15:31:00,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:00,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:31:00,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:00,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 15:31:00,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:00,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:31:00,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:00,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-21 15:31:00,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:00,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-21 15:31:00,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:00,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-21 15:31:00,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:00,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-21 15:31:00,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:00,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-21 15:31:00,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:00,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-21 15:31:00,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:00,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-12-21 15:31:00,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:00,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-12-21 15:31:00,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:00,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-12-21 15:31:00,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:00,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-12-21 15:31:00,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:00,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-12-21 15:31:00,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:00,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-12-21 15:31:00,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:00,525 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 6 proven. 43 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2021-12-21 15:31:00,525 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:31:00,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155366599] [2021-12-21 15:31:00,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155366599] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:31:00,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236560530] [2021-12-21 15:31:00,526 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-21 15:31:00,526 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:31:00,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:31:00,527 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:31:00,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-21 15:31:01,400 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-12-21 15:31:01,401 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 15:31:01,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 2573 conjuncts, 30 conjunts are in the unsatisfiable core [2021-12-21 15:31:01,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:31:02,255 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 163 proven. 4 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2021-12-21 15:31:02,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 15:31:02,659 INFO L353 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2021-12-21 15:31:02,660 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2021-12-21 15:31:02,665 INFO L353 Elim1Store]: treesize reduction 14, result has 6.7 percent of original size [2021-12-21 15:31:02,665 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 12 [2021-12-21 15:31:02,882 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 88 proven. 10 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2021-12-21 15:31:02,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [236560530] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 15:31:02,882 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 15:31:02,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 11] total 28 [2021-12-21 15:31:02,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451277713] [2021-12-21 15:31:02,882 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 15:31:02,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-21 15:31:02,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:31:02,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-21 15:31:02,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=672, Unknown=0, NotChecked=0, Total=756 [2021-12-21 15:31:02,884 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) [2021-12-21 15:31:06,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:31:06,065 INFO L93 Difference]: Finished difference Result 505 states and 694 transitions. [2021-12-21 15:31:06,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-12-21 15:31:06,066 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 [2021-12-21 15:31:06,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:31:06,067 INFO L225 Difference]: With dead ends: 505 [2021-12-21 15:31:06,067 INFO L226 Difference]: Without dead ends: 304 [2021-12-21 15:31:06,069 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 570 GetRequests, 494 SyntacticMatches, 8 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1052 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=781, Invalid=4049, Unknown=0, NotChecked=0, Total=4830 [2021-12-21 15:31:06,070 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 615 mSDsluCounter, 1276 mSDsCounter, 0 mSdLazyCounter, 2746 mSolverCounterSat, 302 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 640 SdHoareTripleChecker+Valid, 1481 SdHoareTripleChecker+Invalid, 3462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 302 IncrementalHoareTripleChecker+Valid, 2746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 414 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-21 15:31:06,070 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [640 Valid, 1481 Invalid, 3462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [302 Valid, 2746 Invalid, 0 Unknown, 414 Unchecked, 1.6s Time] [2021-12-21 15:31:06,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2021-12-21 15:31:06,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 251. [2021-12-21 15:31:06,080 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) [2021-12-21 15:31:06,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 344 transitions. [2021-12-21 15:31:06,081 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 344 transitions. Word has length 224 [2021-12-21 15:31:06,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:31:06,081 INFO L470 AbstractCegarLoop]: Abstraction has 251 states and 344 transitions. [2021-12-21 15:31:06,082 INFO L471 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) [2021-12-21 15:31:06,082 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 344 transitions. [2021-12-21 15:31:06,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2021-12-21 15:31:06,099 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:31:06,099 INFO L514 BasicCegarLoop]: 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] [2021-12-21 15:31:06,141 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-21 15:31:06,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:31:06,323 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:31:06,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:31:06,324 INFO L85 PathProgramCache]: Analyzing trace with hash 490308611, now seen corresponding path program 1 times [2021-12-21 15:31:06,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:31:06,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848377368] [2021-12-21 15:31:06,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:31:06,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:31:06,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:06,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:31:06,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:06,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 15:31:06,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:06,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 15:31:06,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:06,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 15:31:06,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:06,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 15:31:06,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:06,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-21 15:31:06,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:06,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 15:31:06,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:06,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:31:06,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:06,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 15:31:06,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:06,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:31:06,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:06,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 15:31:06,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:06,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-21 15:31:06,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:06,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-21 15:31:06,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:06,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-21 15:31:06,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:06,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-21 15:31:06,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:06,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:31:06,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:06,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 15:31:06,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:06,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:31:06,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:06,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-21 15:31:06,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:06,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-21 15:31:06,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:06,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-21 15:31:06,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:06,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-21 15:31:06,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:06,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-21 15:31:06,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:06,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-21 15:31:06,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:06,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-21 15:31:06,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:06,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-12-21 15:31:06,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:06,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-12-21 15:31:06,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:06,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-12-21 15:31:06,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:06,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-12-21 15:31:06,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:06,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-12-21 15:31:06,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:06,591 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2021-12-21 15:31:06,591 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:31:06,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848377368] [2021-12-21 15:31:06,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848377368] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:31:06,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1187215030] [2021-12-21 15:31:06,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:31:06,592 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:31:06,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:31:06,593 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:31:06,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-21 15:31:07,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:07,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 3143 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-21 15:31:07,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:31:07,356 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2021-12-21 15:31:07,356 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:31:07,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1187215030] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:31:07,356 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 15:31:07,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 7 [2021-12-21 15:31:07,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232422256] [2021-12-21 15:31:07,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:31:07,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 15:31:07,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:31:07,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 15:31:07,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-21 15:31:07,357 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) [2021-12-21 15:31:07,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:31:07,377 INFO L93 Difference]: Finished difference Result 500 states and 691 transitions. [2021-12-21 15:31:07,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 15:31:07,379 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 [2021-12-21 15:31:07,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:31:07,380 INFO L225 Difference]: With dead ends: 500 [2021-12-21 15:31:07,380 INFO L226 Difference]: Without dead ends: 264 [2021-12-21 15:31:07,381 INFO L932 BasicCegarLoop]: 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 [2021-12-21 15:31:07,381 INFO L933 BasicCegarLoop]: 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 [2021-12-21 15:31:07,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 708 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 15:31:07,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2021-12-21 15:31:07,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 255. [2021-12-21 15:31:07,392 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) [2021-12-21 15:31:07,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 348 transitions. [2021-12-21 15:31:07,393 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 348 transitions. Word has length 226 [2021-12-21 15:31:07,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:31:07,393 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 348 transitions. [2021-12-21 15:31:07,393 INFO L471 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) [2021-12-21 15:31:07,393 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 348 transitions. [2021-12-21 15:31:07,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2021-12-21 15:31:07,394 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:31:07,395 INFO L514 BasicCegarLoop]: 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] [2021-12-21 15:31:07,415 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-21 15:31:07,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-21 15:31:07,601 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:31:07,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:31:07,601 INFO L85 PathProgramCache]: Analyzing trace with hash 910460735, now seen corresponding path program 1 times [2021-12-21 15:31:07,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:31:07,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94174102] [2021-12-21 15:31:07,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:31:07,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:31:07,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:07,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:31:07,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:07,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 15:31:07,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:07,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 15:31:07,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:07,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 15:31:07,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:07,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 15:31:07,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:07,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-21 15:31:07,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:07,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 15:31:07,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:07,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:31:07,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:07,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 15:31:07,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:07,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:31:07,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:07,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 15:31:07,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:07,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-21 15:31:07,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:07,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-21 15:31:07,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:07,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-21 15:31:07,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:07,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-21 15:31:07,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:07,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:31:07,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:07,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 15:31:07,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:07,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:31:07,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:07,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-21 15:31:07,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:07,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-21 15:31:07,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:07,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-21 15:31:07,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:07,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-21 15:31:07,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:07,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-21 15:31:07,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:07,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-21 15:31:07,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:07,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-21 15:31:07,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:07,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-12-21 15:31:07,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:07,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-12-21 15:31:07,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:07,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-12-21 15:31:07,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:07,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-12-21 15:31:07,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:07,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-12-21 15:31:07,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:07,888 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2021-12-21 15:31:07,888 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:31:07,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94174102] [2021-12-21 15:31:07,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94174102] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:31:07,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274601359] [2021-12-21 15:31:07,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:31:07,889 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:31:07,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:31:07,890 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:31:07,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-21 15:31:08,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:08,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 3145 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-21 15:31:08,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:31:08,651 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2021-12-21 15:31:08,651 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:31:08,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274601359] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:31:08,652 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 15:31:08,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 7 [2021-12-21 15:31:08,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231257846] [2021-12-21 15:31:08,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:31:08,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 15:31:08,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:31:08,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 15:31:08,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-21 15:31:08,653 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) [2021-12-21 15:31:08,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:31:08,687 INFO L93 Difference]: Finished difference Result 507 states and 704 transitions. [2021-12-21 15:31:08,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 15:31:08,695 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 [2021-12-21 15:31:08,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:31:08,697 INFO L225 Difference]: With dead ends: 507 [2021-12-21 15:31:08,697 INFO L226 Difference]: Without dead ends: 267 [2021-12-21 15:31:08,698 INFO L932 BasicCegarLoop]: 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 [2021-12-21 15:31:08,698 INFO L933 BasicCegarLoop]: 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 [2021-12-21 15:31:08,698 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 723 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 15:31:08,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2021-12-21 15:31:08,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 247. [2021-12-21 15:31:08,706 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) [2021-12-21 15:31:08,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 330 transitions. [2021-12-21 15:31:08,707 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 330 transitions. Word has length 226 [2021-12-21 15:31:08,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:31:08,707 INFO L470 AbstractCegarLoop]: Abstraction has 247 states and 330 transitions. [2021-12-21 15:31:08,707 INFO L471 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) [2021-12-21 15:31:08,707 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 330 transitions. [2021-12-21 15:31:08,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2021-12-21 15:31:08,708 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:31:08,709 INFO L514 BasicCegarLoop]: 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] [2021-12-21 15:31:08,731 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-21 15:31:08,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-21 15:31:08,929 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:31:08,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:31:08,930 INFO L85 PathProgramCache]: Analyzing trace with hash 220629245, now seen corresponding path program 2 times [2021-12-21 15:31:08,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:31:08,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890060944] [2021-12-21 15:31:08,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:31:08,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:31:09,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:09,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:31:09,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:09,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 15:31:09,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:09,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 15:31:09,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:09,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 15:31:09,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:09,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 15:31:09,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:09,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-21 15:31:09,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:09,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 15:31:09,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:09,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:31:09,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:09,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 15:31:09,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:09,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:31:09,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:09,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 15:31:09,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:09,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-21 15:31:09,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:09,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-21 15:31:09,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:09,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-21 15:31:09,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:09,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-21 15:31:09,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:09,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:31:09,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:09,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 15:31:09,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:09,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:31:09,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:09,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-21 15:31:09,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:09,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-21 15:31:09,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:09,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-21 15:31:09,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:09,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-21 15:31:09,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:09,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-21 15:31:09,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:09,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-21 15:31:09,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:09,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-21 15:31:09,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:09,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-12-21 15:31:09,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:09,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-12-21 15:31:09,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:09,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-12-21 15:31:09,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:09,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-12-21 15:31:09,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:09,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-12-21 15:31:09,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:09,385 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 20 proven. 29 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2021-12-21 15:31:09,385 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:31:09,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890060944] [2021-12-21 15:31:09,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890060944] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:31:09,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176855720] [2021-12-21 15:31:09,386 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-21 15:31:09,386 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:31:09,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:31:09,387 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:31:09,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-21 15:31:10,145 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-21 15:31:10,145 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 15:31:10,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 3140 conjuncts, 56 conjunts are in the unsatisfiable core [2021-12-21 15:31:10,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:31:10,335 INFO L387 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 [2021-12-21 15:31:10,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:31:10,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:31:10,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:31:10,587 INFO L387 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 [2021-12-21 15:31:10,595 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 14 [2021-12-21 15:31:11,005 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 286 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-12-21 15:31:11,005 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:31:11,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [176855720] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:31:11,006 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 15:31:11,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [12] total 26 [2021-12-21 15:31:11,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122711373] [2021-12-21 15:31:11,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:31:11,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-21 15:31:11,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:31:11,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-21 15:31:11,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=584, Unknown=0, NotChecked=0, Total=650 [2021-12-21 15:31:11,008 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) [2021-12-21 15:31:11,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:31:11,785 INFO L93 Difference]: Finished difference Result 512 states and 702 transitions. [2021-12-21 15:31:11,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-21 15:31:11,786 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 [2021-12-21 15:31:11,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:31:11,788 INFO L225 Difference]: With dead ends: 512 [2021-12-21 15:31:11,788 INFO L226 Difference]: Without dead ends: 335 [2021-12-21 15:31:11,789 INFO L932 BasicCegarLoop]: 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 [2021-12-21 15:31:11,789 INFO L933 BasicCegarLoop]: 253 mSDtfsCounter, 116 mSDsluCounter, 1206 mSDsCounter, 0 mSdLazyCounter, 1054 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 1459 SdHoareTripleChecker+Invalid, 1652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 512 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-21 15:31:11,789 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 1459 Invalid, 1652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1054 Invalid, 0 Unknown, 512 Unchecked, 0.6s Time] [2021-12-21 15:31:11,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2021-12-21 15:31:11,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 287. [2021-12-21 15:31:11,800 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) [2021-12-21 15:31:11,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 385 transitions. [2021-12-21 15:31:11,801 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 385 transitions. Word has length 226 [2021-12-21 15:31:11,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:31:11,801 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 385 transitions. [2021-12-21 15:31:11,801 INFO L471 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) [2021-12-21 15:31:11,801 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 385 transitions. [2021-12-21 15:31:11,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2021-12-21 15:31:11,829 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:31:11,829 INFO L514 BasicCegarLoop]: 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] [2021-12-21 15:31:11,851 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-12-21 15:31:12,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-21 15:31:12,046 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:31:12,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:31:12,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1947774207, now seen corresponding path program 3 times [2021-12-21 15:31:12,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:31:12,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027034741] [2021-12-21 15:31:12,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:31:12,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:31:12,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:12,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:31:12,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:12,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 15:31:12,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:12,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 15:31:12,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:12,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 15:31:12,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:12,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 15:31:12,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:12,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-21 15:31:12,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:12,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 15:31:12,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:12,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:31:12,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:12,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 15:31:12,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:12,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:31:12,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:12,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 15:31:12,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:12,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-21 15:31:12,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:12,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-21 15:31:12,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:12,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-21 15:31:12,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:12,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-21 15:31:12,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:12,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:31:12,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:12,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 15:31:12,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:12,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:31:12,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:12,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-21 15:31:12,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:12,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-21 15:31:12,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:12,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-21 15:31:12,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:12,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-21 15:31:12,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:12,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-21 15:31:12,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:12,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-21 15:31:12,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:12,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-21 15:31:12,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:12,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-12-21 15:31:12,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:12,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-12-21 15:31:12,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:12,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-12-21 15:31:12,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:12,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-12-21 15:31:12,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:12,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-12-21 15:31:12,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:12,757 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 23 proven. 47 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2021-12-21 15:31:12,757 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:31:12,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027034741] [2021-12-21 15:31:12,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027034741] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:31:12,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200215526] [2021-12-21 15:31:12,758 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-21 15:31:12,758 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:31:12,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:31:12,759 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:31:12,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-21 15:31:13,393 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-12-21 15:31:13,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 15:31:13,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 2570 conjuncts, 26 conjunts are in the unsatisfiable core [2021-12-21 15:31:13,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:31:14,249 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 161 proven. 6 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2021-12-21 15:31:14,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 15:31:14,587 INFO L353 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2021-12-21 15:31:14,587 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 19 [2021-12-21 15:31:14,801 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 88 proven. 10 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2021-12-21 15:31:14,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1200215526] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 15:31:14,801 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 15:31:14,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 12, 11] total 35 [2021-12-21 15:31:14,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716719051] [2021-12-21 15:31:14,802 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 15:31:14,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-12-21 15:31:14,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:31:14,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-12-21 15:31:14,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=1076, Unknown=0, NotChecked=0, Total=1190 [2021-12-21 15:31:14,803 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) [2021-12-21 15:31:18,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:31:18,458 INFO L93 Difference]: Finished difference Result 607 states and 895 transitions. [2021-12-21 15:31:18,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-12-21 15:31:18,459 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 [2021-12-21 15:31:18,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:31:18,461 INFO L225 Difference]: With dead ends: 607 [2021-12-21 15:31:18,462 INFO L226 Difference]: Without dead ends: 417 [2021-12-21 15:31:18,464 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 567 GetRequests, 499 SyntacticMatches, 7 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 874 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=431, Invalid=3475, Unknown=0, NotChecked=0, Total=3906 [2021-12-21 15:31:18,465 INFO L933 BasicCegarLoop]: 310 mSDtfsCounter, 412 mSDsluCounter, 3311 mSDsCounter, 0 mSdLazyCounter, 4555 mSolverCounterSat, 374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 3621 SdHoareTripleChecker+Invalid, 6350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 4555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1421 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-21 15:31:18,465 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [477 Valid, 3621 Invalid, 6350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [374 Valid, 4555 Invalid, 0 Unknown, 1421 Unchecked, 2.7s Time] [2021-12-21 15:31:18,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2021-12-21 15:31:18,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 304. [2021-12-21 15:31:18,480 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) [2021-12-21 15:31:18,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 420 transitions. [2021-12-21 15:31:18,481 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 420 transitions. Word has length 226 [2021-12-21 15:31:18,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:31:18,482 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 420 transitions. [2021-12-21 15:31:18,483 INFO L471 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) [2021-12-21 15:31:18,483 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 420 transitions. [2021-12-21 15:31:18,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2021-12-21 15:31:18,484 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:31:18,484 INFO L514 BasicCegarLoop]: 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] [2021-12-21 15:31:18,507 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-12-21 15:31:18,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-21 15:31:18,690 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:31:18,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:31:18,691 INFO L85 PathProgramCache]: Analyzing trace with hash -133423481, now seen corresponding path program 1 times [2021-12-21 15:31:18,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:31:18,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670932313] [2021-12-21 15:31:18,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:31:18,691 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:31:18,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:18,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:31:18,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:18,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 15:31:18,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:18,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 15:31:18,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:18,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 15:31:18,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:18,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 15:31:18,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:18,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-21 15:31:18,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:18,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 15:31:18,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:18,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:31:18,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:18,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 15:31:18,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:18,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:31:18,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:18,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 15:31:19,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:19,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-21 15:31:19,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:19,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-21 15:31:19,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:19,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-21 15:31:19,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:19,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-21 15:31:19,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:19,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:31:19,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:19,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 15:31:19,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:19,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:31:19,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:19,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-21 15:31:19,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:19,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-21 15:31:19,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:19,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-21 15:31:19,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:19,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-21 15:31:19,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:19,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-21 15:31:19,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:19,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-21 15:31:19,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:19,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-21 15:31:19,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:19,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-12-21 15:31:19,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:19,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-12-21 15:31:19,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:19,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-12-21 15:31:19,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:19,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-12-21 15:31:19,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:19,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-12-21 15:31:19,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:19,338 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 23 proven. 47 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2021-12-21 15:31:19,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:31:19,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670932313] [2021-12-21 15:31:19,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670932313] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:31:19,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [393677840] [2021-12-21 15:31:19,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:31:19,339 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:31:19,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:31:19,340 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:31:19,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-21 15:31:19,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:19,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 3139 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-21 15:31:19,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:31:20,205 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 212 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2021-12-21 15:31:20,205 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:31:20,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [393677840] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:31:20,205 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 15:31:20,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [20] total 27 [2021-12-21 15:31:20,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531405935] [2021-12-21 15:31:20,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:31:20,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 15:31:20,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:31:20,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 15:31:20,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=643, Unknown=0, NotChecked=0, Total=702 [2021-12-21 15:31:20,207 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) [2021-12-21 15:31:20,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:31:20,334 INFO L93 Difference]: Finished difference Result 531 states and 724 transitions. [2021-12-21 15:31:20,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 15:31:20,335 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 [2021-12-21 15:31:20,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:31:20,336 INFO L225 Difference]: With dead ends: 531 [2021-12-21 15:31:20,336 INFO L226 Difference]: Without dead ends: 267 [2021-12-21 15:31:20,338 INFO L932 BasicCegarLoop]: 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 [2021-12-21 15:31:20,338 INFO L933 BasicCegarLoop]: 229 mSDtfsCounter, 12 mSDsluCounter, 1553 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1782 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 15:31:20,338 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 1782 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 15:31:20,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2021-12-21 15:31:20,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 242. [2021-12-21 15:31:20,348 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) [2021-12-21 15:31:20,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 321 transitions. [2021-12-21 15:31:20,350 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 321 transitions. Word has length 226 [2021-12-21 15:31:20,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:31:20,350 INFO L470 AbstractCegarLoop]: Abstraction has 242 states and 321 transitions. [2021-12-21 15:31:20,350 INFO L471 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) [2021-12-21 15:31:20,350 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 321 transitions. [2021-12-21 15:31:20,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2021-12-21 15:31:20,351 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:31:20,351 INFO L514 BasicCegarLoop]: 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] [2021-12-21 15:31:20,375 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-12-21 15:31:20,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:31:20,567 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:31:20,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:31:20,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1037491156, now seen corresponding path program 2 times [2021-12-21 15:31:20,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:31:20,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256356644] [2021-12-21 15:31:20,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:31:20,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:31:20,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:20,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:31:20,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:20,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 15:31:20,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:20,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 15:31:20,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:20,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 15:31:20,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:20,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 15:31:20,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:20,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-21 15:31:20,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:20,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 15:31:20,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:20,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:31:20,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:20,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 15:31:20,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:20,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:31:20,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:20,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 15:31:20,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:20,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-21 15:31:20,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:20,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-21 15:31:20,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:20,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-21 15:31:20,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:20,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-21 15:31:20,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:20,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:31:20,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:20,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 15:31:20,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:20,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:31:20,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:20,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-21 15:31:20,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:20,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-21 15:31:20,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:20,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-21 15:31:20,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:20,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-21 15:31:20,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:20,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-21 15:31:20,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:21,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-21 15:31:21,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:21,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-21 15:31:21,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:21,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-12-21 15:31:21,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:21,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-21 15:31:21,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:21,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-21 15:31:21,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:21,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-12-21 15:31:21,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:21,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-12-21 15:31:21,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:21,174 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 60 proven. 20 refuted. 0 times theorem prover too weak. 320 trivial. 0 not checked. [2021-12-21 15:31:21,175 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:31:21,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256356644] [2021-12-21 15:31:21,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256356644] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:31:21,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [783612370] [2021-12-21 15:31:21,175 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-21 15:31:21,175 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:31:21,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:31:21,176 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) [2021-12-21 15:31:21,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-21 15:31:21,720 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-21 15:31:21,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 15:31:21,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 3144 conjuncts, 44 conjunts are in the unsatisfiable core [2021-12-21 15:31:21,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:31:22,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:31:22,088 INFO L387 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 [2021-12-21 15:31:22,091 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2021-12-21 15:31:22,520 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 272 proven. 18 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-12-21 15:31:22,520 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 15:31:22,773 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2021-12-21 15:31:23,081 INFO L353 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2021-12-21 15:31:23,081 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 19 [2021-12-21 15:31:23,221 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 36 proven. 64 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2021-12-21 15:31:23,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [783612370] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 15:31:23,222 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 15:31:23,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 11] total 32 [2021-12-21 15:31:23,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301762541] [2021-12-21 15:31:23,222 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 15:31:23,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-12-21 15:31:23,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:31:23,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-12-21 15:31:23,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=897, Unknown=0, NotChecked=0, Total=992 [2021-12-21 15:31:23,223 INFO L87 Difference]: Start difference. First operand 242 states and 321 transitions. Second operand has 32 states, 30 states have (on average 5.633333333333334) internal successors, (169), 27 states have internal predecessors, (169), 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) [2021-12-21 15:31:27,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:31:27,341 INFO L93 Difference]: Finished difference Result 587 states and 809 transitions. [2021-12-21 15:31:27,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-12-21 15:31:27,342 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 30 states have (on average 5.633333333333334) internal successors, (169), 27 states have internal predecessors, (169), 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 [2021-12-21 15:31:27,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:31:27,344 INFO L225 Difference]: With dead ends: 587 [2021-12-21 15:31:27,344 INFO L226 Difference]: Without dead ends: 415 [2021-12-21 15:31:27,345 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 568 GetRequests, 497 SyntacticMatches, 7 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 950 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=513, Invalid=3777, Unknown=0, NotChecked=0, Total=4290 [2021-12-21 15:31:27,346 INFO L933 BasicCegarLoop]: 264 mSDtfsCounter, 371 mSDsluCounter, 2241 mSDsCounter, 0 mSdLazyCounter, 5264 mSolverCounterSat, 301 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 2505 SdHoareTripleChecker+Invalid, 6737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 301 IncrementalHoareTripleChecker+Valid, 5264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1172 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-12-21 15:31:27,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [424 Valid, 2505 Invalid, 6737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [301 Valid, 5264 Invalid, 0 Unknown, 1172 Unchecked, 3.0s Time] [2021-12-21 15:31:27,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2021-12-21 15:31:27,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 346. [2021-12-21 15:31:27,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 234 states have (on average 1.1623931623931625) internal successors, (272), 241 states have internal predecessors, (272), 81 states have call successors, (81), 24 states have call predecessors, (81), 30 states have return successors, (123), 81 states have call predecessors, (123), 80 states have call successors, (123) [2021-12-21 15:31:27,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 476 transitions. [2021-12-21 15:31:27,363 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 476 transitions. Word has length 228 [2021-12-21 15:31:27,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:31:27,364 INFO L470 AbstractCegarLoop]: Abstraction has 346 states and 476 transitions. [2021-12-21 15:31:27,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 30 states have (on average 5.633333333333334) internal successors, (169), 27 states have internal predecessors, (169), 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) [2021-12-21 15:31:27,364 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 476 transitions. [2021-12-21 15:31:27,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2021-12-21 15:31:27,365 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:31:27,366 INFO L514 BasicCegarLoop]: 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] [2021-12-21 15:31:27,387 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-12-21 15:31:27,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-21 15:31:27,579 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:31:27,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:31:27,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1164886158, now seen corresponding path program 4 times [2021-12-21 15:31:27,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:31:27,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368162502] [2021-12-21 15:31:27,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:31:27,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:31:27,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:27,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:31:27,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:27,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 15:31:27,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:27,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 15:31:27,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:27,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 15:31:27,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:27,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 15:31:27,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:27,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-21 15:31:27,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:27,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 15:31:27,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:27,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:31:27,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:27,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 15:31:27,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:27,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:31:27,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:27,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 15:31:27,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:27,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-21 15:31:27,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:27,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-21 15:31:27,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:27,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-21 15:31:27,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:27,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-21 15:31:27,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:27,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:31:27,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:27,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 15:31:27,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:27,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:31:27,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:27,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-21 15:31:27,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:27,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-21 15:31:27,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:27,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-21 15:31:27,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:27,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-21 15:31:27,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:27,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-21 15:31:27,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:27,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-21 15:31:27,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:27,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-21 15:31:27,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:27,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-12-21 15:31:27,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:27,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-21 15:31:27,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:27,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-12-21 15:31:27,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:27,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-12-21 15:31:27,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:27,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2021-12-21 15:31:27,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:27,913 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 35 proven. 15 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2021-12-21 15:31:27,913 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:31:27,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368162502] [2021-12-21 15:31:27,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368162502] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:31:27,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509378023] [2021-12-21 15:31:27,913 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-21 15:31:27,914 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:31:27,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:31:27,915 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) [2021-12-21 15:31:27,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-12-21 15:31:28,476 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-21 15:31:28,476 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 15:31:28,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 3151 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-21 15:31:28,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:31:28,772 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 199 proven. 0 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2021-12-21 15:31:28,772 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:31:28,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509378023] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:31:28,772 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 15:31:28,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [12] total 13 [2021-12-21 15:31:28,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994795961] [2021-12-21 15:31:28,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:31:28,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 15:31:28,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:31:28,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 15:31:28,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-12-21 15:31:28,780 INFO L87 Difference]: Start difference. First operand 346 states and 476 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) [2021-12-21 15:31:28,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:31:28,906 INFO L93 Difference]: Finished difference Result 547 states and 738 transitions. [2021-12-21 15:31:28,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 15:31:28,906 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 [2021-12-21 15:31:28,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:31:28,908 INFO L225 Difference]: With dead ends: 547 [2021-12-21 15:31:28,908 INFO L226 Difference]: Without dead ends: 361 [2021-12-21 15:31:28,909 INFO L932 BasicCegarLoop]: 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 [2021-12-21 15:31:28,910 INFO L933 BasicCegarLoop]: 229 mSDtfsCounter, 12 mSDsluCounter, 1550 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1779 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 15:31:28,910 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 1779 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 15:31:28,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2021-12-21 15:31:28,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 347. [2021-12-21 15:31:28,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 235 states have (on average 1.1617021276595745) internal successors, (273), 242 states have internal predecessors, (273), 81 states have call successors, (81), 24 states have call predecessors, (81), 30 states have return successors, (120), 81 states have call predecessors, (120), 80 states have call successors, (120) [2021-12-21 15:31:28,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 474 transitions. [2021-12-21 15:31:28,932 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 474 transitions. Word has length 232 [2021-12-21 15:31:28,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:31:28,932 INFO L470 AbstractCegarLoop]: Abstraction has 347 states and 474 transitions. [2021-12-21 15:31:28,932 INFO L471 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) [2021-12-21 15:31:28,932 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 474 transitions. [2021-12-21 15:31:28,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2021-12-21 15:31:28,934 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:31:28,934 INFO L514 BasicCegarLoop]: 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] [2021-12-21 15:31:28,961 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-12-21 15:31:29,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-12-21 15:31:29,148 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:31:29,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:31:29,148 INFO L85 PathProgramCache]: Analyzing trace with hash -233712675, now seen corresponding path program 3 times [2021-12-21 15:31:29,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:31:29,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114117317] [2021-12-21 15:31:29,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:31:29,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:31:29,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:29,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:31:29,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:29,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 15:31:29,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:29,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 15:31:29,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:29,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 15:31:29,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:29,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 15:31:29,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:29,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-21 15:31:29,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:29,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 15:31:29,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:29,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:31:29,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:29,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 15:31:29,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:29,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:31:29,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:29,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 15:31:29,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:29,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-21 15:31:29,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:29,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-21 15:31:29,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:29,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-21 15:31:29,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:29,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-21 15:31:29,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:29,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:31:29,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:29,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 15:31:29,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:29,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:31:29,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:29,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-21 15:31:29,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:29,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-21 15:31:29,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:29,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-21 15:31:29,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:29,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-21 15:31:29,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:29,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-21 15:31:29,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:29,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-21 15:31:29,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:29,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-21 15:31:29,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:29,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-12-21 15:31:29,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:29,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-21 15:31:29,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:29,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-12-21 15:31:29,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:29,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-12-21 15:31:29,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:29,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2021-12-21 15:31:29,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:29,593 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 92 proven. 8 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2021-12-21 15:31:29,594 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:31:29,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114117317] [2021-12-21 15:31:29,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114117317] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:31:29,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053746809] [2021-12-21 15:31:29,594 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-21 15:31:29,594 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:31:29,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:31:29,596 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) [2021-12-21 15:31:29,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-12-21 15:31:30,558 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-12-21 15:31:30,558 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 15:31:30,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 2572 conjuncts, 26 conjunts are in the unsatisfiable core [2021-12-21 15:31:30,571 INFO L286 TraceCheckSpWp]: Computing forward predicates...