./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 839c364b 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 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 17:02:07,577 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 17:02:07,580 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 17:02:07,624 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 17:02:07,624 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 17:02:07,628 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 17:02:07,630 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 17:02:07,634 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 17:02:07,636 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 17:02:07,641 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 17:02:07,642 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 17:02:07,643 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 17:02:07,644 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 17:02:07,646 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 17:02:07,648 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 17:02:07,651 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 17:02:07,653 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 17:02:07,654 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 17:02:07,655 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 17:02:07,658 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 17:02:07,662 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 17:02:07,663 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 17:02:07,664 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 17:02:07,665 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 17:02:07,667 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 17:02:07,668 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 17:02:07,668 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 17:02:07,669 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 17:02:07,670 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 17:02:07,671 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 17:02:07,671 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 17:02:07,672 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 17:02:07,673 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 17:02:07,674 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 17:02:07,675 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 17:02:07,675 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 17:02:07,675 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 17:02:07,676 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 17:02:07,676 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 17:02:07,676 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 17:02:07,677 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 17:02:07,678 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-14 17:02:07,712 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 17:02:07,713 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 17:02:07,713 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 17:02:07,713 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 17:02:07,714 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 17:02:07,715 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 17:02:07,715 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 17:02:07,715 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 17:02:07,715 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 17:02:07,716 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 17:02:07,716 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 17:02:07,717 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 17:02:07,717 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 17:02:07,717 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 17:02:07,717 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 17:02:07,717 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 17:02:07,717 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 17:02:07,718 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 17:02:07,718 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 17:02:07,718 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 17:02:07,718 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 17:02:07,718 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:02:07,719 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 17:02:07,719 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 17:02:07,719 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 17:02:07,719 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 17:02:07,719 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 17:02:07,719 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 17:02:07,720 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 17:02:07,720 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 17:02:07,720 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 17:02:07,720 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cab1c092802d28f475b8a467f14dab6a3f796dc1a4441d8517361eeec98aa4cb [2021-12-14 17:02:07,964 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 17:02:07,992 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 17:02:07,994 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 17:02:07,995 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 17:02:07,996 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 17:02:07,996 INFO L432 ainManager$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 [2021-12-14 17:02:08,071 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3f8dbba1/b183eeb63cc14fbda18f279a529d3d14/FLAG7a4776404 [2021-12-14 17:02:08,777 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 17:02:08,778 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 [2021-12-14 17:02:08,818 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3f8dbba1/b183eeb63cc14fbda18f279a529d3d14/FLAG7a4776404 [2021-12-14 17:02:09,033 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3f8dbba1/b183eeb63cc14fbda18f279a529d3d14 [2021-12-14 17:02:09,035 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 17:02:09,037 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 17:02:09,038 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 17:02:09,038 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 17:02:09,041 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 17:02:09,042 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:02:09" (1/1) ... [2021-12-14 17:02:09,043 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47d9592d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:02:09, skipping insertion in model container [2021-12-14 17:02:09,043 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:02:09" (1/1) ... [2021-12-14 17:02:09,049 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 17:02:09,135 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 17:02:09,383 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] [2021-12-14 17:02:09,389 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] [2021-12-14 17:02:09,997 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:02:09,999 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:02:10,000 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:02:10,000 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:02:10,001 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:02:10,012 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:02:10,012 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:02:10,014 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:02:10,014 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:02:10,238 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-14 17:02:10,239 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-14 17:02:10,240 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-14 17:02:10,241 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-14 17:02:10,242 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-14 17:02:10,242 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-14 17:02:10,243 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-14 17:02:10,244 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-14 17:02:10,244 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-14 17:02:10,245 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-14 17:02:10,367 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-14 17:02:10,457 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:02:10,458 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:02:10,536 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:02:10,588 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 17:02:10,609 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] [2021-12-14 17:02:10,610 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] [2021-12-14 17:02:10,652 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:02:10,653 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:02:10,654 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:02:10,654 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:02:10,655 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:02:10,664 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:02:10,665 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:02:10,666 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:02:10,666 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:02:10,701 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-14 17:02:10,702 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-14 17:02:10,703 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-14 17:02:10,703 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-14 17:02:10,706 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-14 17:02:10,706 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-14 17:02:10,706 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-14 17:02:10,707 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-14 17:02:10,707 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-14 17:02:10,711 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-14 17:02:10,730 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-14 17:02:10,788 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:02:10,788 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:02:10,866 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:02:11,108 INFO L208 MainTranslator]: Completed translation [2021-12-14 17:02:11,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:02:11 WrapperNode [2021-12-14 17:02:11,108 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 17:02:11,109 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 17:02:11,110 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 17:02:11,110 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 17:02:11,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:02:11" (1/1) ... [2021-12-14 17:02:11,189 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:02:11" (1/1) ... [2021-12-14 17:02:11,277 INFO L137 Inliner]: procedures = 691, calls = 2668, calls flagged for inlining = 58, calls inlined = 5, statements flattened = 900 [2021-12-14 17:02:11,278 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 17:02:11,279 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 17:02:11,279 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 17:02:11,279 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 17:02:11,286 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:02:11" (1/1) ... [2021-12-14 17:02:11,287 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:02:11" (1/1) ... [2021-12-14 17:02:11,300 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:02:11" (1/1) ... [2021-12-14 17:02:11,301 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:02:11" (1/1) ... [2021-12-14 17:02:11,353 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:02:11" (1/1) ... [2021-12-14 17:02:11,367 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:02:11" (1/1) ... [2021-12-14 17:02:11,375 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:02:11" (1/1) ... [2021-12-14 17:02:11,392 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 17:02:11,398 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 17:02:11,398 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 17:02:11,398 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 17:02:11,399 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:02:11" (1/1) ... [2021-12-14 17:02:11,406 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:02:11,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:02:11,433 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) [2021-12-14 17:02:11,452 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 [2021-12-14 17:02:11,474 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2021-12-14 17:02:11,475 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2021-12-14 17:02:11,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 17:02:11,476 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-12-14 17:02:11,476 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-12-14 17:02:11,476 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-14 17:02:11,476 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-14 17:02:11,476 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-14 17:02:11,477 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-14 17:02:11,477 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 17:02:11,477 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2021-12-14 17:02:11,478 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2021-12-14 17:02:11,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-14 17:02:11,479 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2021-12-14 17:02:11,479 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2021-12-14 17:02:11,479 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_byte_buf_has_allocated_buffer_member [2021-12-14 17:02:11,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_byte_buf_has_allocated_buffer_member [2021-12-14 17:02:11,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 17:02:11,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 17:02:11,480 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-14 17:02:11,480 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-14 17:02:11,480 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-12-14 17:02:11,480 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-12-14 17:02:11,480 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_size_t [2021-12-14 17:02:11,480 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_size_t [2021-12-14 17:02:11,481 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-14 17:02:11,481 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-14 17:02:11,482 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2021-12-14 17:02:11,482 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2021-12-14 17:02:11,482 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 17:02:11,482 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-14 17:02:11,483 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_write [2021-12-14 17:02:11,483 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_write [2021-12-14 17:02:11,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-14 17:02:11,483 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-12-14 17:02:11,483 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-12-14 17:02:11,483 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-12-14 17:02:11,484 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-12-14 17:02:11,484 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_bounded [2021-12-14 17:02:11,484 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_bounded [2021-12-14 17:02:11,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-14 17:02:11,484 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_buf_equivalence [2021-12-14 17:02:11,484 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_buf_equivalence [2021-12-14 17:02:11,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 17:02:11,781 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 17:02:11,783 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 17:02:12,819 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 17:02:12,826 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 17:02:12,826 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-14 17:02:12,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:02:12 BoogieIcfgContainer [2021-12-14 17:02:12,828 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 17:02:12,829 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 17:02:12,829 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 17:02:12,832 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 17:02:12,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:02:09" (1/3) ... [2021-12-14 17:02:12,832 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c57f2e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:02:12, skipping insertion in model container [2021-12-14 17:02:12,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:02:11" (2/3) ... [2021-12-14 17:02:12,833 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c57f2e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:02:12, skipping insertion in model container [2021-12-14 17:02:12,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:02:12" (3/3) ... [2021-12-14 17:02:12,834 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_write_from_whole_buffer_harness-1.i [2021-12-14 17:02:12,840 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 17:02:12,840 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 17:02:12,886 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 17:02:12,902 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 [2021-12-14 17:02:12,902 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 17:02:12,920 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) [2021-12-14 17:02:12,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-12-14 17:02:12,932 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:02:12,933 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] [2021-12-14 17:02:12,934 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:02:12,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:02:12,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1514198340, now seen corresponding path program 1 times [2021-12-14 17:02:12,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:02:12,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106061044] [2021-12-14 17:02:12,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:02:12,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:02:13,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:13,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:02:13,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:13,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:02:13,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:13,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 17:02:13,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:13,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 17:02:13,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:13,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 17:02:13,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:13,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-14 17:02:13,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:13,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 17:02:13,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:13,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:02:13,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:13,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:02:13,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:13,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:02:13,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:13,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-14 17:02:13,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:13,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-14 17:02:13,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:13,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-14 17:02:13,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:13,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-14 17:02:13,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:13,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-14 17:02:13,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:13,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:02:13,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:13,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:02:13,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:13,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:02:13,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:13,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-14 17:02:13,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:13,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-14 17:02:13,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:13,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-14 17:02:13,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:13,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-14 17:02:13,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:13,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-14 17:02:13,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:13,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-14 17:02:13,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:13,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-14 17:02:13,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:13,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-14 17:02:13,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:13,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-14 17:02:13,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:13,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-14 17:02:13,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:13,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-12-14 17:02:13,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:13,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-12-14 17:02:13,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:13,909 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2021-12-14 17:02:13,910 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:02:13,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106061044] [2021-12-14 17:02:13,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106061044] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:02:13,923 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:02:13,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 17:02:13,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412206791] [2021-12-14 17:02:13,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:02:13,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 17:02:13,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:02:13,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 17:02:13,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:02:13,953 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) [2021-12-14 17:02:14,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:02:14,435 INFO L93 Difference]: Finished difference Result 374 states and 536 transitions. [2021-12-14 17:02:14,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 17:02:14,438 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 [2021-12-14 17:02:14,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:02:14,446 INFO L225 Difference]: With dead ends: 374 [2021-12-14 17:02:14,459 INFO L226 Difference]: Without dead ends: 194 [2021-12-14 17:02:14,464 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 [2021-12-14 17:02:14,466 INFO L933 BasicCegarLoop]: 202 mSDtfsCounter, 179 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-14 17:02:14,479 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [200 Valid, 259 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-14 17:02:14,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-12-14 17:02:14,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 182. [2021-12-14 17:02:14,531 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) [2021-12-14 17:02:14,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 242 transitions. [2021-12-14 17:02:14,544 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 242 transitions. Word has length 176 [2021-12-14 17:02:14,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:02:14,544 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 242 transitions. [2021-12-14 17:02:14,545 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) [2021-12-14 17:02:14,545 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 242 transitions. [2021-12-14 17:02:14,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-12-14 17:02:14,550 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:02:14,550 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] [2021-12-14 17:02:14,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 17:02:14,551 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:02:14,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:02:14,551 INFO L85 PathProgramCache]: Analyzing trace with hash 606096116, now seen corresponding path program 1 times [2021-12-14 17:02:14,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:02:14,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730463484] [2021-12-14 17:02:14,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:02:14,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:02:14,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:14,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:02:14,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:14,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:02:14,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:14,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 17:02:14,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:14,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 17:02:14,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:14,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 17:02:14,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:14,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-14 17:02:14,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:14,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 17:02:14,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:14,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:02:14,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:14,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:02:14,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:14,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:02:14,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:14,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-14 17:02:14,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:14,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-14 17:02:14,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:14,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-14 17:02:14,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:14,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-14 17:02:14,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:15,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-14 17:02:15,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:15,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:02:15,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:15,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:02:15,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:15,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:02:15,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:15,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-14 17:02:15,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:15,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-14 17:02:15,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:15,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-14 17:02:15,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:15,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-14 17:02:15,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:15,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-14 17:02:15,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:15,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-14 17:02:15,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:15,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-14 17:02:15,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:15,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-14 17:02:15,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:15,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-14 17:02:15,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:15,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-14 17:02:15,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:15,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-12-14 17:02:15,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:15,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-12-14 17:02:15,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:15,159 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2021-12-14 17:02:15,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:02:15,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730463484] [2021-12-14 17:02:15,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730463484] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:02:15,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223195354] [2021-12-14 17:02:15,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:02:15,161 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:02:15,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:02:15,162 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) [2021-12-14 17:02:15,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-14 17:02:15,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:15,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 3020 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-14 17:02:15,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:02:16,190 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2021-12-14 17:02:16,190 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:02:16,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223195354] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:02:16,191 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 17:02:16,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2021-12-14 17:02:16,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582046033] [2021-12-14 17:02:16,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:02:16,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 17:02:16,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:02:16,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 17:02:16,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-12-14 17:02:16,193 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) [2021-12-14 17:02:16,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:02:16,431 INFO L93 Difference]: Finished difference Result 352 states and 472 transitions. [2021-12-14 17:02:16,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 17:02:16,432 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 [2021-12-14 17:02:16,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:02:16,442 INFO L225 Difference]: With dead ends: 352 [2021-12-14 17:02:16,442 INFO L226 Difference]: Without dead ends: 185 [2021-12-14 17:02:16,444 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 [2021-12-14 17:02:16,444 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 [2021-12-14 17:02:16,445 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] [2021-12-14 17:02:16,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-12-14 17:02:16,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2021-12-14 17:02:16,471 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) [2021-12-14 17:02:16,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 251 transitions. [2021-12-14 17:02:16,473 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 251 transitions. Word has length 176 [2021-12-14 17:02:16,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:02:16,474 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 251 transitions. [2021-12-14 17:02:16,474 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) [2021-12-14 17:02:16,474 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 251 transitions. [2021-12-14 17:02:16,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-12-14 17:02:16,483 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:02:16,484 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] [2021-12-14 17:02:16,506 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-14 17:02:16,695 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 [2021-12-14 17:02:16,696 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:02:16,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:02:16,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1545774441, now seen corresponding path program 1 times [2021-12-14 17:02:16,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:02:16,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846644285] [2021-12-14 17:02:16,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:02:16,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:02:16,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:16,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:02:16,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:16,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:02:16,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:16,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 17:02:16,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:16,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 17:02:16,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:16,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 17:02:16,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:16,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-14 17:02:16,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:16,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 17:02:16,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:16,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:02:16,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:16,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:02:16,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:16,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:02:16,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:16,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-14 17:02:16,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:16,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-14 17:02:16,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:16,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-14 17:02:17,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:17,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-14 17:02:17,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:17,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-14 17:02:17,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:17,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:02:17,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:17,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:02:17,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:17,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:02:17,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:17,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-14 17:02:17,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:17,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-14 17:02:17,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:17,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-14 17:02:17,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:17,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-14 17:02:17,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:17,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-14 17:02:17,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:17,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-14 17:02:17,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:17,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-14 17:02:17,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:17,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-14 17:02:17,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:17,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-14 17:02:17,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:17,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-12-14 17:02:17,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:17,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-14 17:02:17,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:17,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-12-14 17:02:17,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:17,204 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2021-12-14 17:02:17,204 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:02:17,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846644285] [2021-12-14 17:02:17,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846644285] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:02:17,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622129711] [2021-12-14 17:02:17,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:02:17,205 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:02:17,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:02:17,206 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) [2021-12-14 17:02:17,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-14 17:02:17,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:17,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 3037 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-14 17:02:17,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:02:18,069 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 144 proven. 12 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2021-12-14 17:02:18,069 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 17:02:18,511 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2021-12-14 17:02:18,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [622129711] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 17:02:18,511 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 17:02:18,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 14 [2021-12-14 17:02:18,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044095774] [2021-12-14 17:02:18,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 17:02:18,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-14 17:02:18,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:02:18,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-14 17:02:18,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-12-14 17:02:18,514 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) [2021-12-14 17:02:19,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:02:19,435 INFO L93 Difference]: Finished difference Result 336 states and 456 transitions. [2021-12-14 17:02:19,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 17:02:19,436 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 [2021-12-14 17:02:19,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:02:19,438 INFO L225 Difference]: With dead ends: 336 [2021-12-14 17:02:19,438 INFO L226 Difference]: Without dead ends: 197 [2021-12-14 17:02:19,439 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 417 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2021-12-14 17:02:19,440 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 466 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 736 mSolverCounterSat, 401 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.8s IncrementalHoareTripleChecker+Time [2021-12-14 17:02:19,440 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [466 Valid, 490 Invalid, 1137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [401 Valid, 736 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-14 17:02:19,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-12-14 17:02:19,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 185. [2021-12-14 17:02:19,456 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) [2021-12-14 17:02:19,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 249 transitions. [2021-12-14 17:02:19,458 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 249 transitions. Word has length 182 [2021-12-14 17:02:19,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:02:19,463 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 249 transitions. [2021-12-14 17:02:19,464 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) [2021-12-14 17:02:19,464 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 249 transitions. [2021-12-14 17:02:19,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-12-14 17:02:19,466 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:02:19,467 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] [2021-12-14 17:02:19,501 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-14 17:02:19,679 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 [2021-12-14 17:02:19,680 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:02:19,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:02:19,680 INFO L85 PathProgramCache]: Analyzing trace with hash 2124831764, now seen corresponding path program 2 times [2021-12-14 17:02:19,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:02:19,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346822857] [2021-12-14 17:02:19,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:02:19,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:02:19,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:19,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:02:19,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:19,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:02:19,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:19,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 17:02:19,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:19,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 17:02:19,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:19,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 17:02:19,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:19,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-14 17:02:19,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:19,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 17:02:19,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:19,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:02:19,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:19,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:02:19,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:19,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:02:19,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:19,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-14 17:02:19,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:20,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-14 17:02:20,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:20,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-14 17:02:20,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:20,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-14 17:02:20,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:20,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-14 17:02:20,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:20,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:02:20,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:20,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:02:20,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:20,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:02:20,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:20,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-14 17:02:20,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:20,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-14 17:02:20,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:20,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-14 17:02:20,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:20,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-14 17:02:20,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:20,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-14 17:02:20,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:20,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-14 17:02:20,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:20,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-14 17:02:20,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:20,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-14 17:02:20,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:20,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-12-14 17:02:20,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:20,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-14 17:02:20,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:20,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-12-14 17:02:20,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:20,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-12-14 17:02:20,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:20,344 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 4 proven. 38 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2021-12-14 17:02:20,345 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:02:20,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346822857] [2021-12-14 17:02:20,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346822857] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:02:20,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222560418] [2021-12-14 17:02:20,345 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-14 17:02:20,346 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:02:20,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:02:20,347 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) [2021-12-14 17:02:20,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-14 17:02:20,870 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-14 17:02:20,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-14 17:02:20,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 3054 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-14 17:02:20,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:02:21,312 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2021-12-14 17:02:21,312 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:02:21,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1222560418] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:02:21,312 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 17:02:21,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 20 [2021-12-14 17:02:21,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439013195] [2021-12-14 17:02:21,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:02:21,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 17:02:21,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:02:21,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 17:02:21,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2021-12-14 17:02:21,314 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) [2021-12-14 17:02:21,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:02:21,696 INFO L93 Difference]: Finished difference Result 306 states and 416 transitions. [2021-12-14 17:02:21,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 17:02:21,697 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 [2021-12-14 17:02:21,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:02:21,701 INFO L225 Difference]: With dead ends: 306 [2021-12-14 17:02:21,701 INFO L226 Difference]: Without dead ends: 185 [2021-12-14 17:02:21,702 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 [2021-12-14 17:02:21,705 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, 0.3s IncrementalHoareTripleChecker+Time [2021-12-14 17:02:21,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [279 Valid, 1185 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-14 17:02:21,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-12-14 17:02:21,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2021-12-14 17:02:21,732 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) [2021-12-14 17:02:21,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 245 transitions. [2021-12-14 17:02:21,735 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 245 transitions. Word has length 188 [2021-12-14 17:02:21,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:02:21,735 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 245 transitions. [2021-12-14 17:02:21,736 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) [2021-12-14 17:02:21,736 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 245 transitions. [2021-12-14 17:02:21,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2021-12-14 17:02:21,740 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:02:21,740 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] [2021-12-14 17:02:21,769 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-14 17:02:21,953 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 [2021-12-14 17:02:21,954 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:02:21,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:02:21,954 INFO L85 PathProgramCache]: Analyzing trace with hash -806726443, now seen corresponding path program 3 times [2021-12-14 17:02:21,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:02:21,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009828510] [2021-12-14 17:02:21,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:02:21,955 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:02:22,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:22,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:02:22,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:22,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:02:22,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:22,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 17:02:22,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:22,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 17:02:22,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:22,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 17:02:22,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:22,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-14 17:02:22,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:22,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 17:02:22,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:22,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:02:22,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:22,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:02:22,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:22,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:02:22,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:22,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-14 17:02:22,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:22,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-14 17:02:22,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:22,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-14 17:02:22,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:22,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-14 17:02:22,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:22,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-14 17:02:22,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:22,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:02:22,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:22,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:02:22,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:22,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:02:22,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:22,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-14 17:02:22,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:22,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-14 17:02:22,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:22,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-14 17:02:22,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:22,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-14 17:02:22,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:22,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-14 17:02:22,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:22,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-14 17:02:22,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:22,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-14 17:02:22,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:22,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-14 17:02:22,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:22,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-14 17:02:22,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:22,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-12-14 17:02:22,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:22,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-14 17:02:22,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:22,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-12-14 17:02:22,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:22,345 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2021-12-14 17:02:22,345 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:02:22,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009828510] [2021-12-14 17:02:22,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009828510] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:02:22,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86237277] [2021-12-14 17:02:22,346 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-14 17:02:22,346 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:02:22,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:02:22,347 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) [2021-12-14 17:02:22,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-14 17:02:22,811 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-12-14 17:02:22,811 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-14 17:02:22,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 2325 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-14 17:02:22,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:02:23,107 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2021-12-14 17:02:23,108 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:02:23,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86237277] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:02:23,108 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 17:02:23,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2021-12-14 17:02:23,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553239196] [2021-12-14 17:02:23,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:02:23,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 17:02:23,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:02:23,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 17:02:23,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-12-14 17:02:23,110 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) [2021-12-14 17:02:23,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:02:23,169 INFO L93 Difference]: Finished difference Result 197 states and 265 transitions. [2021-12-14 17:02:23,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-14 17:02:23,169 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 [2021-12-14 17:02:23,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:02:23,171 INFO L225 Difference]: With dead ends: 197 [2021-12-14 17:02:23,171 INFO L226 Difference]: Without dead ends: 195 [2021-12-14 17:02:23,172 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 [2021-12-14 17:02:23,172 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 [2021-12-14 17:02:23,173 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] [2021-12-14 17:02:23,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-12-14 17:02:23,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 194. [2021-12-14 17:02:23,185 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) [2021-12-14 17:02:23,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 262 transitions. [2021-12-14 17:02:23,188 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 262 transitions. Word has length 206 [2021-12-14 17:02:23,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:02:23,190 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 262 transitions. [2021-12-14 17:02:23,190 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) [2021-12-14 17:02:23,190 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 262 transitions. [2021-12-14 17:02:23,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-12-14 17:02:23,192 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:02:23,193 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] [2021-12-14 17:02:23,220 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-14 17:02:23,413 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 [2021-12-14 17:02:23,413 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:02:23,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:02:23,413 INFO L85 PathProgramCache]: Analyzing trace with hash 2116281437, now seen corresponding path program 1 times [2021-12-14 17:02:23,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:02:23,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663798694] [2021-12-14 17:02:23,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:02:23,414 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:02:23,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:23,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:02:23,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:23,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:02:23,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:23,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 17:02:23,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:23,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 17:02:23,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:23,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 17:02:23,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:23,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-14 17:02:23,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:23,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 17:02:23,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:23,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:02:23,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:23,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:02:23,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:23,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:02:23,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:23,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-14 17:02:23,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:23,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-14 17:02:23,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:23,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-14 17:02:23,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:23,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-14 17:02:23,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:23,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-14 17:02:23,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:23,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:02:23,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:23,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:02:23,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:23,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:02:23,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:23,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-14 17:02:23,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:23,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-14 17:02:23,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:23,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-14 17:02:23,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:23,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-14 17:02:23,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:23,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-14 17:02:23,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:23,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-14 17:02:23,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:23,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-14 17:02:23,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:23,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-14 17:02:23,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:23,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-14 17:02:23,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:23,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-12-14 17:02:23,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:23,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-14 17:02:23,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:23,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-12-14 17:02:23,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:23,817 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2021-12-14 17:02:23,817 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:02:23,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663798694] [2021-12-14 17:02:23,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663798694] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:02:23,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1671719835] [2021-12-14 17:02:23,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:02:23,818 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:02:23,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:02:23,824 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) [2021-12-14 17:02:23,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-14 17:02:24,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:24,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 3117 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-14 17:02:24,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:02:24,851 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 164 proven. 56 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-12-14 17:02:24,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 17:02:25,274 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2021-12-14 17:02:25,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1671719835] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 17:02:25,275 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 17:02:25,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 14 [2021-12-14 17:02:25,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501127233] [2021-12-14 17:02:25,275 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 17:02:25,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-14 17:02:25,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:02:25,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-14 17:02:25,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-12-14 17:02:25,277 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) [2021-12-14 17:02:25,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:02:25,964 INFO L93 Difference]: Finished difference Result 333 states and 446 transitions. [2021-12-14 17:02:25,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 17:02:25,965 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 [2021-12-14 17:02:25,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:02:25,967 INFO L225 Difference]: With dead ends: 333 [2021-12-14 17:02:25,967 INFO L226 Difference]: Without dead ends: 203 [2021-12-14 17:02:25,968 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 474 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2021-12-14 17:02:25,969 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 276 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 605 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2021-12-14 17:02:25,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [288 Valid, 583 Invalid, 786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 605 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-14 17:02:25,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2021-12-14 17:02:25,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 191. [2021-12-14 17:02:25,980 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) [2021-12-14 17:02:25,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 258 transitions. [2021-12-14 17:02:25,981 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 258 transitions. Word has length 210 [2021-12-14 17:02:25,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:02:25,982 INFO L470 AbstractCegarLoop]: Abstraction has 191 states and 258 transitions. [2021-12-14 17:02:25,982 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) [2021-12-14 17:02:25,982 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 258 transitions. [2021-12-14 17:02:25,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2021-12-14 17:02:25,985 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:02:25,985 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] [2021-12-14 17:02:26,011 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-14 17:02:26,199 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 [2021-12-14 17:02:26,199 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:02:26,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:02:26,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1227624248, now seen corresponding path program 1 times [2021-12-14 17:02:26,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:02:26,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12488204] [2021-12-14 17:02:26,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:02:26,200 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:02:26,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:26,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:02:26,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:26,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:02:26,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:26,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 17:02:26,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:26,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 17:02:26,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:26,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 17:02:26,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:26,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-14 17:02:26,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:26,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 17:02:26,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:26,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:02:26,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:26,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:02:26,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:26,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:02:26,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:26,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-14 17:02:26,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:26,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-14 17:02:26,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:26,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-14 17:02:26,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:26,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-14 17:02:26,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:26,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-14 17:02:26,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:26,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:02:26,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:26,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:02:26,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:26,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:02:26,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:26,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-14 17:02:26,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:26,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-14 17:02:26,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:27,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-14 17:02:27,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:27,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-14 17:02:27,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:27,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-14 17:02:27,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:27,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-14 17:02:27,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:27,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-14 17:02:27,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:27,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-14 17:02:27,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:27,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-12-14 17:02:27,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:27,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-14 17:02:27,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:27,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-14 17:02:27,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:27,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-12-14 17:02:27,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:27,285 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 60 proven. 20 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2021-12-14 17:02:27,285 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:02:27,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12488204] [2021-12-14 17:02:27,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12488204] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:02:27,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854438665] [2021-12-14 17:02:27,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:02:27,286 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:02:27,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:02:27,287 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) [2021-12-14 17:02:27,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-14 17:02:27,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:27,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 3134 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-14 17:02:27,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:02:28,291 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 341 trivial. 0 not checked. [2021-12-14 17:02:28,291 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:02:28,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [854438665] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:02:28,291 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 17:02:28,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [15] total 18 [2021-12-14 17:02:28,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442033019] [2021-12-14 17:02:28,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:02:28,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 17:02:28,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:02:28,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 17:02:28,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-12-14 17:02:28,293 INFO L87 Difference]: Start difference. First operand 191 states and 258 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (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) [2021-12-14 17:02:28,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:02:28,489 INFO L93 Difference]: Finished difference Result 385 states and 541 transitions. [2021-12-14 17:02:28,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 17:02:28,490 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (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 216 [2021-12-14 17:02:28,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:02:28,492 INFO L225 Difference]: With dead ends: 385 [2021-12-14 17:02:28,492 INFO L226 Difference]: Without dead ends: 209 [2021-12-14 17:02:28,494 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2021-12-14 17:02:28,494 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 40 mSDsluCounter, 589 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 834 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 53 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 17:02:28,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 834 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 111 Invalid, 0 Unknown, 53 Unchecked, 0.2s Time] [2021-12-14 17:02:28,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2021-12-14 17:02:28,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 196. [2021-12-14 17:02:28,510 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) [2021-12-14 17:02:28,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 265 transitions. [2021-12-14 17:02:28,512 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 265 transitions. Word has length 216 [2021-12-14 17:02:28,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:02:28,516 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 265 transitions. [2021-12-14 17:02:28,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (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) [2021-12-14 17:02:28,517 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 265 transitions. [2021-12-14 17:02:28,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2021-12-14 17:02:28,520 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:02:28,520 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] [2021-12-14 17:02:28,550 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-14 17:02:28,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:02:28,744 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:02:28,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:02:28,744 INFO L85 PathProgramCache]: Analyzing trace with hash -969458810, now seen corresponding path program 1 times [2021-12-14 17:02:28,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:02:28,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961872393] [2021-12-14 17:02:28,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:02:28,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:02:29,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:29,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:02:29,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:29,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:02:29,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:29,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 17:02:29,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:29,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 17:02:29,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:29,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 17:02:29,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:29,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-14 17:02:29,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:29,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 17:02:29,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:29,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:02:29,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:29,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:02:29,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:29,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:02:29,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:29,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-14 17:02:29,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:29,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-14 17:02:29,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:29,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-14 17:02:29,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:29,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-14 17:02:29,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:29,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-14 17:02:29,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:29,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:02:29,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:29,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:02:29,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:29,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:02:29,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:29,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-14 17:02:29,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:29,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-14 17:02:29,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:29,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-14 17:02:29,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:29,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-14 17:02:29,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:29,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-14 17:02:29,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:29,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-14 17:02:29,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:29,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-14 17:02:29,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:29,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-14 17:02:29,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:29,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-12-14 17:02:29,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:29,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-14 17:02:29,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:29,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-14 17:02:29,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:29,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-12-14 17:02:29,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:29,599 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 60 proven. 20 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2021-12-14 17:02:29,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:02:29,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961872393] [2021-12-14 17:02:29,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961872393] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:02:29,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430545929] [2021-12-14 17:02:29,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:02:29,601 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:02:29,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:02:29,602 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) [2021-12-14 17:02:29,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-14 17:02:30,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:30,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 3129 conjuncts, 30 conjunts are in the unsatisfiable core [2021-12-14 17:02:30,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:02:30,401 INFO L388 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 [2021-12-14 17:02:30,889 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2021-12-14 17:02:30,890 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:02:30,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430545929] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:02:30,890 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 17:02:30,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [15] total 26 [2021-12-14 17:02:30,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175764496] [2021-12-14 17:02:30,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:02:30,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-14 17:02:30,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:02:30,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-14 17:02:30,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=586, Unknown=0, NotChecked=0, Total=650 [2021-12-14 17:02:30,892 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) [2021-12-14 17:02:31,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:02:31,047 INFO L93 Difference]: Finished difference Result 400 states and 535 transitions. [2021-12-14 17:02:31,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-14 17:02:31,048 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 [2021-12-14 17:02:31,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:02:31,049 INFO L225 Difference]: With dead ends: 400 [2021-12-14 17:02:31,049 INFO L226 Difference]: Without dead ends: 215 [2021-12-14 17:02:31,050 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 [2021-12-14 17:02:31,050 INFO L933 BasicCegarLoop]: 233 mSDtfsCounter, 18 mSDsluCounter, 1497 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 1730 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 114 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 17:02:31,051 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 1730 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 73 Invalid, 0 Unknown, 114 Unchecked, 0.1s Time] [2021-12-14 17:02:31,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-12-14 17:02:31,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2021-12-14 17:02:31,060 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) [2021-12-14 17:02:31,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 288 transitions. [2021-12-14 17:02:31,062 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 288 transitions. Word has length 216 [2021-12-14 17:02:31,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:02:31,062 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 288 transitions. [2021-12-14 17:02:31,063 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) [2021-12-14 17:02:31,063 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 288 transitions. [2021-12-14 17:02:31,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2021-12-14 17:02:31,064 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:02:31,064 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] [2021-12-14 17:02:31,095 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-14 17:02:31,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:02:31,283 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:02:31,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:02:31,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1130279620, now seen corresponding path program 1 times [2021-12-14 17:02:31,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:02:31,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841395445] [2021-12-14 17:02:31,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:02:31,284 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:02:31,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:31,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:02:31,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:31,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:02:31,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:31,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 17:02:31,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:31,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 17:02:31,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:31,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 17:02:31,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:31,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-14 17:02:31,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:31,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 17:02:31,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:31,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:02:31,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:31,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:02:31,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:31,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:02:31,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:31,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-14 17:02:31,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:31,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-14 17:02:31,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:31,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-14 17:02:31,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:31,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-14 17:02:31,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:31,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-14 17:02:31,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:31,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:02:31,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:31,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:02:31,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:31,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:02:31,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:31,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-14 17:02:31,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:31,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-14 17:02:31,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:31,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-14 17:02:31,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:31,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-14 17:02:31,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:31,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-14 17:02:31,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:31,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-14 17:02:31,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:31,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-14 17:02:31,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:31,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-14 17:02:31,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:31,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-12-14 17:02:31,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:31,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-14 17:02:31,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:31,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-14 17:02:31,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:31,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-12-14 17:02:31,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:31,602 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2021-12-14 17:02:31,602 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:02:31,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841395445] [2021-12-14 17:02:31,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841395445] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:02:31,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206952176] [2021-12-14 17:02:31,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:02:31,603 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:02:31,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:02:31,604 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) [2021-12-14 17:02:31,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-14 17:02:32,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:32,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 3124 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-14 17:02:32,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:02:32,443 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 118 proven. 0 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2021-12-14 17:02:32,443 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:02:32,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [206952176] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:02:32,444 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 17:02:32,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 7 [2021-12-14 17:02:32,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996830592] [2021-12-14 17:02:32,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:02:32,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 17:02:32,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:02:32,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 17:02:32,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-14 17:02:32,445 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) [2021-12-14 17:02:32,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:02:32,474 INFO L93 Difference]: Finished difference Result 409 states and 556 transitions. [2021-12-14 17:02:32,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 17:02:32,475 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 [2021-12-14 17:02:32,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:02:32,477 INFO L225 Difference]: With dead ends: 409 [2021-12-14 17:02:32,477 INFO L226 Difference]: Without dead ends: 224 [2021-12-14 17:02:32,478 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 [2021-12-14 17:02:32,479 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 [2021-12-14 17:02:32,479 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] [2021-12-14 17:02:32,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2021-12-14 17:02:32,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 207. [2021-12-14 17:02:32,488 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) [2021-12-14 17:02:32,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 278 transitions. [2021-12-14 17:02:32,490 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 278 transitions. Word has length 216 [2021-12-14 17:02:32,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:02:32,490 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 278 transitions. [2021-12-14 17:02:32,491 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) [2021-12-14 17:02:32,491 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 278 transitions. [2021-12-14 17:02:32,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2021-12-14 17:02:32,492 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:02:32,492 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] [2021-12-14 17:02:32,521 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-14 17:02:32,707 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,SelfDestructingSolverStorable8 [2021-12-14 17:02:32,707 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:02:32,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:02:32,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1998809472, now seen corresponding path program 2 times [2021-12-14 17:02:32,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:02:32,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502579369] [2021-12-14 17:02:32,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:02:32,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:02:32,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:32,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:02:32,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:32,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:02:32,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:32,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 17:02:32,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:32,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 17:02:32,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:33,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 17:02:33,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:33,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-14 17:02:33,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:33,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 17:02:33,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:33,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:02:33,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:33,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:02:33,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:33,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:02:33,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:33,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-14 17:02:33,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:33,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-14 17:02:33,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:33,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-14 17:02:33,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:33,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-14 17:02:33,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:33,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-14 17:02:33,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:33,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:02:33,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:33,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:02:33,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:33,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:02:33,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:33,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-14 17:02:33,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:33,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-14 17:02:33,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:33,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-14 17:02:33,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:33,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-14 17:02:33,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:33,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-14 17:02:33,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:33,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-14 17:02:33,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:33,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-14 17:02:33,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:33,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-12-14 17:02:33,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:33,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-12-14 17:02:33,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:33,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-14 17:02:33,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:33,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-12-14 17:02:33,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:33,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-12-14 17:02:33,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:33,266 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 6 proven. 42 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2021-12-14 17:02:33,267 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:02:33,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502579369] [2021-12-14 17:02:33,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502579369] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:02:33,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048427021] [2021-12-14 17:02:33,267 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-14 17:02:33,268 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:02:33,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:02:33,272 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) [2021-12-14 17:02:33,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-14 17:02:33,987 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-14 17:02:33,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-14 17:02:33,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 3136 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-14 17:02:34,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:02:34,344 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 168 proven. 0 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2021-12-14 17:02:34,344 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:02:34,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1048427021] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:02:34,345 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 17:02:34,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [12] total 13 [2021-12-14 17:02:34,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919629404] [2021-12-14 17:02:34,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:02:34,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 17:02:34,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:02:34,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 17:02:34,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-12-14 17:02:34,347 INFO L87 Difference]: Start difference. First operand 207 states and 278 transitions. Second operand has 9 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 3 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-12-14 17:02:34,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:02:34,503 INFO L93 Difference]: Finished difference Result 397 states and 536 transitions. [2021-12-14 17:02:34,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 17:02:34,504 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 3 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 220 [2021-12-14 17:02:34,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:02:34,506 INFO L225 Difference]: With dead ends: 397 [2021-12-14 17:02:34,506 INFO L226 Difference]: Without dead ends: 212 [2021-12-14 17:02:34,507 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 275 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2021-12-14 17:02:34,507 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 12 mSDsluCounter, 1567 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1798 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 [2021-12-14 17:02:34,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 1798 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 17:02:34,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-12-14 17:02:34,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2021-12-14 17:02:34,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 133 states have (on average 1.1804511278195489) internal successors, (157), 136 states have internal predecessors, (157), 59 states have call successors, (59), 18 states have call predecessors, (59), 19 states have return successors, (74), 58 states have call predecessors, (74), 58 states have call successors, (74) [2021-12-14 17:02:34,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 290 transitions. [2021-12-14 17:02:34,519 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 290 transitions. Word has length 220 [2021-12-14 17:02:34,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:02:34,519 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 290 transitions. [2021-12-14 17:02:34,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 3 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-12-14 17:02:34,520 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 290 transitions. [2021-12-14 17:02:34,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2021-12-14 17:02:34,521 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:02:34,521 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:02:34,551 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-14 17:02:34,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-14 17:02:34,735 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:02:34,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:02:34,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1213389883, now seen corresponding path program 1 times [2021-12-14 17:02:34,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:02:34,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233289889] [2021-12-14 17:02:34,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:02:34,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:02:34,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:34,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:02:34,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:34,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:02:34,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:34,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 17:02:34,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:34,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 17:02:34,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:34,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 17:02:34,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:34,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-14 17:02:34,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:34,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 17:02:34,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:34,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:02:34,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:34,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:02:34,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:34,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:02:34,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:34,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-14 17:02:34,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:34,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-14 17:02:34,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:34,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-14 17:02:34,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:34,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-14 17:02:34,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:34,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-14 17:02:34,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:34,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:02:34,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:34,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:02:34,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:34,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:02:34,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:34,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-14 17:02:34,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:34,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-14 17:02:34,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:34,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-14 17:02:34,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:34,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-14 17:02:34,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:34,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-14 17:02:34,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:34,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-14 17:02:34,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:34,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-14 17:02:35,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:35,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-12-14 17:02:35,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:35,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-12-14 17:02:35,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:35,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-14 17:02:35,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:35,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-14 17:02:35,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:35,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2021-12-14 17:02:35,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:35,040 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 367 trivial. 0 not checked. [2021-12-14 17:02:35,040 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:02:35,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233289889] [2021-12-14 17:02:35,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233289889] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:02:35,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146194038] [2021-12-14 17:02:35,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:02:35,041 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:02:35,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:02:35,042 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) [2021-12-14 17:02:35,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-14 17:02:35,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:35,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 3141 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-14 17:02:35,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:02:35,873 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2021-12-14 17:02:35,873 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:02:35,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146194038] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:02:35,874 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 17:02:35,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 7 [2021-12-14 17:02:35,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959844781] [2021-12-14 17:02:35,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:02:35,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 17:02:35,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:02:35,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 17:02:35,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-14 17:02:35,875 INFO L87 Difference]: Start difference. First operand 212 states and 290 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 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) [2021-12-14 17:02:35,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:02:35,903 INFO L93 Difference]: Finished difference Result 407 states and 563 transitions. [2021-12-14 17:02:35,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 17:02:35,904 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 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 222 [2021-12-14 17:02:35,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:02:35,905 INFO L225 Difference]: With dead ends: 407 [2021-12-14 17:02:35,905 INFO L226 Difference]: Without dead ends: 215 [2021-12-14 17:02:35,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-14 17:02:35,907 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 [2021-12-14 17:02:35,907 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] [2021-12-14 17:02:35,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-12-14 17:02:35,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 212. [2021-12-14 17:02:35,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 133 states have (on average 1.1654135338345866) internal successors, (155), 136 states have internal predecessors, (155), 59 states have call successors, (59), 18 states have call predecessors, (59), 19 states have return successors, (74), 58 states have call predecessors, (74), 58 states have call successors, (74) [2021-12-14 17:02:35,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 288 transitions. [2021-12-14 17:02:35,919 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 288 transitions. Word has length 222 [2021-12-14 17:02:35,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:02:35,919 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 288 transitions. [2021-12-14 17:02:35,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 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) [2021-12-14 17:02:35,920 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 288 transitions. [2021-12-14 17:02:35,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2021-12-14 17:02:35,921 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:02:35,921 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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] [2021-12-14 17:02:35,949 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-14 17:02:36,135 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,SelfDestructingSolverStorable10 [2021-12-14 17:02:36,135 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:02:36,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:02:36,136 INFO L85 PathProgramCache]: Analyzing trace with hash 318299511, now seen corresponding path program 1 times [2021-12-14 17:02:36,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:02:36,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091518828] [2021-12-14 17:02:36,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:02:36,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:02:36,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:36,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:02:36,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:36,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:02:36,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:36,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 17:02:36,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:36,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 17:02:36,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:36,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 17:02:36,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:36,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-14 17:02:36,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:36,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 17:02:36,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:36,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:02:36,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:36,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:02:36,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:36,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:02:36,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:36,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-14 17:02:36,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:36,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-14 17:02:36,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:36,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-14 17:02:36,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:36,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-14 17:02:36,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:36,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-14 17:02:36,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:36,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:02:36,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:36,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:02:36,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:36,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:02:36,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:36,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-14 17:02:36,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:36,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-14 17:02:36,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:36,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-14 17:02:36,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:36,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-14 17:02:36,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:36,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-14 17:02:36,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:36,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-14 17:02:36,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:36,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-14 17:02:36,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:36,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-12-14 17:02:36,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:36,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-12-14 17:02:36,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:36,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-14 17:02:36,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:36,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-14 17:02:36,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:36,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2021-12-14 17:02:36,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:36,437 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2021-12-14 17:02:36,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:02:36,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091518828] [2021-12-14 17:02:36,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091518828] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:02:36,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983308082] [2021-12-14 17:02:36,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:02:36,438 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:02:36,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:02:36,440 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) [2021-12-14 17:02:36,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-14 17:02:36,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:36,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 3143 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-14 17:02:36,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:02:37,247 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2021-12-14 17:02:37,247 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:02:37,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1983308082] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:02:37,248 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 17:02:37,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 7 [2021-12-14 17:02:37,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460073766] [2021-12-14 17:02:37,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:02:37,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 17:02:37,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:02:37,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 17:02:37,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-14 17:02:37,249 INFO L87 Difference]: Start difference. First operand 212 states and 288 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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) [2021-12-14 17:02:37,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:02:37,285 INFO L93 Difference]: Finished difference Result 413 states and 581 transitions. [2021-12-14 17:02:37,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 17:02:37,286 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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 222 [2021-12-14 17:02:37,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:02:37,287 INFO L225 Difference]: With dead ends: 413 [2021-12-14 17:02:37,287 INFO L226 Difference]: Without dead ends: 221 [2021-12-14 17:02:37,288 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-14 17:02:37,289 INFO L933 BasicCegarLoop]: 238 mSDtfsCounter, 34 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 706 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:02:37,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 706 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 17:02:37,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2021-12-14 17:02:37,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 208. [2021-12-14 17:02:37,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 129 states have (on average 1.1472868217054264) internal successors, (148), 132 states have internal predecessors, (148), 59 states have call successors, (59), 18 states have call predecessors, (59), 19 states have return successors, (74), 58 states have call predecessors, (74), 58 states have call successors, (74) [2021-12-14 17:02:37,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 281 transitions. [2021-12-14 17:02:37,300 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 281 transitions. Word has length 222 [2021-12-14 17:02:37,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:02:37,300 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 281 transitions. [2021-12-14 17:02:37,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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) [2021-12-14 17:02:37,301 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 281 transitions. [2021-12-14 17:02:37,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2021-12-14 17:02:37,302 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:02:37,303 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:02:37,333 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-14 17:02:37,527 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,SelfDestructingSolverStorable11 [2021-12-14 17:02:37,527 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:02:37,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:02:37,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1406308811, now seen corresponding path program 1 times [2021-12-14 17:02:37,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:02:37,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778422028] [2021-12-14 17:02:37,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:02:37,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:02:37,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:37,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:02:37,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:37,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:02:37,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:37,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 17:02:37,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:37,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 17:02:37,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:37,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 17:02:37,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:37,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-14 17:02:37,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:37,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 17:02:37,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:37,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:02:37,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:37,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:02:37,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:37,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:02:37,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:37,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-14 17:02:37,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:37,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-14 17:02:37,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:37,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-14 17:02:37,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:37,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-14 17:02:37,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:37,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-14 17:02:37,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:37,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:02:37,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:37,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:02:37,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:37,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:02:37,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:37,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-14 17:02:37,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:37,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-14 17:02:37,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:37,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-14 17:02:37,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:37,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-14 17:02:38,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:38,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-14 17:02:38,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:38,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-14 17:02:38,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:38,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-14 17:02:38,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:38,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-12-14 17:02:38,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:38,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-12-14 17:02:38,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:38,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-14 17:02:38,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:38,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-14 17:02:38,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:38,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2021-12-14 17:02:38,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:38,196 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 60 proven. 20 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2021-12-14 17:02:38,197 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:02:38,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778422028] [2021-12-14 17:02:38,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778422028] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:02:38,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1065500498] [2021-12-14 17:02:38,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:02:38,197 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:02:38,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:02:38,200 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) [2021-12-14 17:02:38,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-14 17:02:38,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:38,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 3138 conjuncts, 38 conjunts are in the unsatisfiable core [2021-12-14 17:02:38,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:02:38,943 INFO L388 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 [2021-12-14 17:02:39,380 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 212 proven. 0 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2021-12-14 17:02:39,380 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:02:39,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1065500498] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:02:39,380 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 17:02:39,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [15] total 26 [2021-12-14 17:02:39,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196734828] [2021-12-14 17:02:39,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:02:39,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-14 17:02:39,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:02:39,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-14 17:02:39,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=586, Unknown=0, NotChecked=0, Total=650 [2021-12-14 17:02:39,382 INFO L87 Difference]: Start difference. First operand 208 states and 281 transitions. Second operand has 13 states, 12 states have (on average 7.75) internal successors, (93), 10 states have internal predecessors, (93), 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) [2021-12-14 17:02:39,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:02:39,537 INFO L93 Difference]: Finished difference Result 406 states and 541 transitions. [2021-12-14 17:02:39,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-14 17:02:39,538 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 7.75) internal successors, (93), 10 states have internal predecessors, (93), 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 222 [2021-12-14 17:02:39,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:02:39,540 INFO L225 Difference]: With dead ends: 406 [2021-12-14 17:02:39,540 INFO L226 Difference]: Without dead ends: 243 [2021-12-14 17:02:39,541 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=68, Invalid=634, Unknown=0, NotChecked=0, Total=702 [2021-12-14 17:02:39,541 INFO L933 BasicCegarLoop]: 247 mSDtfsCounter, 32 mSDsluCounter, 1998 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 2245 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 181 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 17:02:39,542 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 2245 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 94 Invalid, 0 Unknown, 181 Unchecked, 0.1s Time] [2021-12-14 17:02:39,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-12-14 17:02:39,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 232. [2021-12-14 17:02:39,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 152 states have (on average 1.1578947368421053) internal successors, (176), 155 states have internal predecessors, (176), 59 states have call successors, (59), 19 states have call predecessors, (59), 20 states have return successors, (73), 58 states have call predecessors, (73), 58 states have call successors, (73) [2021-12-14 17:02:39,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 308 transitions. [2021-12-14 17:02:39,553 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 308 transitions. Word has length 222 [2021-12-14 17:02:39,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:02:39,553 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 308 transitions. [2021-12-14 17:02:39,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 7.75) internal successors, (93), 10 states have internal predecessors, (93), 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) [2021-12-14 17:02:39,553 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 308 transitions. [2021-12-14 17:02:39,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2021-12-14 17:02:39,555 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:02:39,555 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] [2021-12-14 17:02:39,589 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-12-14 17:02:39,775 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,SelfDestructingSolverStorable12 [2021-12-14 17:02:39,775 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:02:39,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:02:39,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1500492923, now seen corresponding path program 2 times [2021-12-14 17:02:39,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:02:39,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127885979] [2021-12-14 17:02:39,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:02:39,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:02:39,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:39,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:02:39,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:40,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:02:40,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:40,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 17:02:40,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:40,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 17:02:40,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:40,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 17:02:40,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:40,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-14 17:02:40,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:40,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 17:02:40,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:40,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:02:40,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:40,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:02:40,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:40,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:02:40,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:40,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-14 17:02:40,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:40,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-14 17:02:40,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:40,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-14 17:02:40,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:40,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-14 17:02:40,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:40,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-14 17:02:40,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:40,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:02:40,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:40,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:02:40,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:40,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:02:40,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:40,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-14 17:02:40,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:40,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-14 17:02:40,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:40,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-14 17:02:40,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:40,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-14 17:02:40,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:40,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-14 17:02:40,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:40,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-14 17:02:40,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:40,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-14 17:02:40,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:40,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-12-14 17:02:40,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:40,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-12-14 17:02:40,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:40,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-12-14 17:02:40,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:40,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-12-14 17:02:40,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:40,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-12-14 17:02:40,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:40,255 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 20 proven. 29 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2021-12-14 17:02:40,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:02:40,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127885979] [2021-12-14 17:02:40,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127885979] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:02:40,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782525586] [2021-12-14 17:02:40,256 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-14 17:02:40,257 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:02:40,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:02:40,258 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) [2021-12-14 17:02:40,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-14 17:02:41,200 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-14 17:02:41,200 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-14 17:02:41,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 3145 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-14 17:02:41,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:02:41,551 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 212 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2021-12-14 17:02:41,551 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:02:41,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782525586] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:02:41,551 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 17:02:41,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [12] total 13 [2021-12-14 17:02:41,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68915603] [2021-12-14 17:02:41,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:02:41,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 17:02:41,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:02:41,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 17:02:41,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-12-14 17:02:41,553 INFO L87 Difference]: Start difference. First operand 232 states and 308 transitions. Second operand has 9 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 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) [2021-12-14 17:02:41,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:02:41,703 INFO L93 Difference]: Finished difference Result 396 states and 530 transitions. [2021-12-14 17:02:41,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 17:02:41,703 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 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 [2021-12-14 17:02:41,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:02:41,705 INFO L225 Difference]: With dead ends: 396 [2021-12-14 17:02:41,705 INFO L226 Difference]: Without dead ends: 225 [2021-12-14 17:02:41,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 282 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2021-12-14 17:02:41,707 INFO L933 BasicCegarLoop]: 230 mSDtfsCounter, 12 mSDsluCounter, 1560 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1790 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 [2021-12-14 17:02:41,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 1790 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 17:02:41,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2021-12-14 17:02:41,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2021-12-14 17:02:41,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 145 states have (on average 1.1379310344827587) internal successors, (165), 148 states have internal predecessors, (165), 59 states have call successors, (59), 19 states have call predecessors, (59), 20 states have return successors, (73), 58 states have call predecessors, (73), 58 states have call successors, (73) [2021-12-14 17:02:41,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 297 transitions. [2021-12-14 17:02:41,718 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 297 transitions. Word has length 226 [2021-12-14 17:02:41,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:02:41,718 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 297 transitions. [2021-12-14 17:02:41,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 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) [2021-12-14 17:02:41,718 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 297 transitions. [2021-12-14 17:02:41,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2021-12-14 17:02:41,720 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:02:41,720 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 4, 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, 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] [2021-12-14 17:02:41,752 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-12-14 17:02:41,935 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,SelfDestructingSolverStorable13 [2021-12-14 17:02:41,935 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:02:41,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:02:41,936 INFO L85 PathProgramCache]: Analyzing trace with hash 2088885862, now seen corresponding path program 3 times [2021-12-14 17:02:41,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:02:41,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599079207] [2021-12-14 17:02:41,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:02:41,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:02:42,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:42,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:02:42,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:42,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:02:42,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:42,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 17:02:42,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:42,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 17:02:42,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:42,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 17:02:42,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:42,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-14 17:02:42,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:42,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 17:02:42,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:42,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:02:42,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:42,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:02:42,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:42,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:02:42,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:42,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-14 17:02:42,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:42,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-14 17:02:42,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:42,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-14 17:02:42,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:42,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-14 17:02:42,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:42,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-14 17:02:42,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:42,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:02:42,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:42,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:02:42,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:42,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:02:42,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:42,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-14 17:02:42,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:42,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-14 17:02:42,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:42,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-14 17:02:42,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:42,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-14 17:02:42,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:42,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-14 17:02:42,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:42,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-14 17:02:42,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:42,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-14 17:02:42,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:42,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-12-14 17:02:42,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:42,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-14 17:02:42,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:42,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-14 17:02:42,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:42,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-12-14 17:02:42,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:42,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-12-14 17:02:42,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:42,745 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 60 proven. 20 refuted. 0 times theorem prover too weak. 320 trivial. 0 not checked. [2021-12-14 17:02:42,745 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:02:42,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599079207] [2021-12-14 17:02:42,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599079207] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:02:42,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354247644] [2021-12-14 17:02:42,746 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-14 17:02:42,746 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:02:42,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:02:42,747 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) [2021-12-14 17:02:42,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-14 17:02:43,980 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-12-14 17:02:43,980 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-14 17:02:43,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 2575 conjuncts, 30 conjunts are in the unsatisfiable core [2021-12-14 17:02:43,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:02:45,014 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 163 proven. 4 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2021-12-14 17:02:45,014 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 17:02:45,502 INFO L354 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2021-12-14 17:02:45,502 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2021-12-14 17:02:45,508 INFO L354 Elim1Store]: treesize reduction 14, result has 6.7 percent of original size [2021-12-14 17:02:45,508 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 12 [2021-12-14 17:02:45,759 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 88 proven. 10 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2021-12-14 17:02:45,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1354247644] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 17:02:45,759 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 17:02:45,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 11] total 30 [2021-12-14 17:02:45,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121069073] [2021-12-14 17:02:45,760 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 17:02:45,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-12-14 17:02:45,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:02:45,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-12-14 17:02:45,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=778, Unknown=0, NotChecked=0, Total=870 [2021-12-14 17:02:45,761 INFO L87 Difference]: Start difference. First operand 225 states and 297 transitions. Second operand has 30 states, 28 states have (on average 4.428571428571429) internal successors, (124), 25 states have internal predecessors, (124), 7 states have call successors, (43), 7 states have call predecessors, (43), 6 states have return successors, (36), 5 states have call predecessors, (36), 6 states have call successors, (36) [2021-12-14 17:02:50,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:02:50,307 INFO L93 Difference]: Finished difference Result 511 states and 700 transitions. [2021-12-14 17:02:50,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-12-14 17:02:50,308 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 28 states have (on average 4.428571428571429) internal successors, (124), 25 states have internal predecessors, (124), 7 states have call successors, (43), 7 states have call predecessors, (43), 6 states have return successors, (36), 5 states have call predecessors, (36), 6 states have call successors, (36) Word has length 228 [2021-12-14 17:02:50,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:02:50,311 INFO L225 Difference]: With dead ends: 511 [2021-12-14 17:02:50,311 INFO L226 Difference]: Without dead ends: 383 [2021-12-14 17:02:50,315 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 576 GetRequests, 503 SyntacticMatches, 7 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1026 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=647, Invalid=3909, Unknown=0, NotChecked=0, Total=4556 [2021-12-14 17:02:50,317 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 309 mSDsluCounter, 1534 mSDsCounter, 0 mSdLazyCounter, 4026 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 1762 SdHoareTripleChecker+Invalid, 4872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 4026 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 624 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-12-14 17:02:50,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [337 Valid, 1762 Invalid, 4872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 4026 Invalid, 0 Unknown, 624 Unchecked, 2.8s Time] [2021-12-14 17:02:50,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2021-12-14 17:02:50,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 335. [2021-12-14 17:02:50,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 228 states have (on average 1.1535087719298245) internal successors, (263), 233 states have internal predecessors, (263), 79 states have call successors, (79), 23 states have call predecessors, (79), 27 states have return successors, (116), 79 states have call predecessors, (116), 78 states have call successors, (116) [2021-12-14 17:02:50,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 458 transitions. [2021-12-14 17:02:50,334 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 458 transitions. Word has length 228 [2021-12-14 17:02:50,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:02:50,335 INFO L470 AbstractCegarLoop]: Abstraction has 335 states and 458 transitions. [2021-12-14 17:02:50,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 28 states have (on average 4.428571428571429) internal successors, (124), 25 states have internal predecessors, (124), 7 states have call successors, (43), 7 states have call predecessors, (43), 6 states have return successors, (36), 5 states have call predecessors, (36), 6 states have call successors, (36) [2021-12-14 17:02:50,336 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 458 transitions. [2021-12-14 17:02:50,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2021-12-14 17:02:50,337 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:02:50,338 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-14 17:02:50,369 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-12-14 17:02:50,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:02:50,563 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:02:50,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:02:50,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1403347118, now seen corresponding path program 4 times [2021-12-14 17:02:50,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:02:50,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416879159] [2021-12-14 17:02:50,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:02:50,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:02:50,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:50,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:02:50,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:50,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:02:50,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:50,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 17:02:50,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:50,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 17:02:50,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:50,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 17:02:50,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:50,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-14 17:02:50,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:50,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 17:02:50,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:50,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:02:50,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:50,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:02:50,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:51,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:02:51,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:51,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-14 17:02:51,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:51,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-14 17:02:51,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:51,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-14 17:02:51,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:51,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-14 17:02:51,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:51,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-14 17:02:51,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:51,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:02:51,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:51,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:02:51,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:51,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:02:51,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:51,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-14 17:02:51,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:51,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-14 17:02:51,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:51,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-14 17:02:51,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:51,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-14 17:02:51,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:51,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-14 17:02:51,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:51,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-14 17:02:51,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:51,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-14 17:02:51,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:51,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-12-14 17:02:51,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:51,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-14 17:02:51,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:51,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-12-14 17:02:51,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:51,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-12-14 17:02:51,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:51,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2021-12-14 17:02:51,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:02:51,294 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 40 proven. 40 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked. [2021-12-14 17:02:51,295 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:02:51,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416879159] [2021-12-14 17:02:51,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416879159] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:02:51,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227663266] [2021-12-14 17:02:51,295 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-14 17:02:51,296 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:02:51,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:02:51,297 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) [2021-12-14 17:02:51,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-14 17:02:51,864 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-14 17:02:51,865 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-14 17:02:51,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 3149 conjuncts, 44 conjunts are in the unsatisfiable core [2021-12-14 17:02:51,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:02:52,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:02:52,317 INFO L388 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 [2021-12-14 17:02:52,320 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2021-12-14 17:02:52,828 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 280 proven. 18 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-12-14 17:02:52,829 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 17:02:53,097 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2021-12-14 17:02:53,482 INFO L354 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2021-12-14 17:02:53,482 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 19 [2021-12-14 17:02:53,655 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 36 proven. 68 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2021-12-14 17:02:53,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1227663266] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 17:02:53,656 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 17:02:53,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 11] total 32 [2021-12-14 17:02:53,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686565267] [2021-12-14 17:02:53,656 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 17:02:53,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-12-14 17:02:53,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:02:53,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-12-14 17:02:53,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=896, Unknown=0, NotChecked=0, Total=992 [2021-12-14 17:02:53,658 INFO L87 Difference]: Start difference. First operand 335 states and 458 transitions. Second operand has 32 states, 31 states have (on average 5.419354838709677) internal successors, (168), 27 states have internal predecessors, (168), 11 states have call successors, (65), 9 states have call predecessors, (65), 9 states have return successors, (60), 10 states have call predecessors, (60), 10 states have call successors, (60) [2021-12-14 17:02:58,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:02:58,101 INFO L93 Difference]: Finished difference Result 790 states and 1144 transitions. [2021-12-14 17:02:58,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-12-14 17:02:58,102 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 5.419354838709677) internal successors, (168), 27 states have internal predecessors, (168), 11 states have call successors, (65), 9 states have call predecessors, (65), 9 states have return successors, (60), 10 states have call predecessors, (60), 10 states have call successors, (60) Word has length 232 [2021-12-14 17:02:58,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:02:58,106 INFO L225 Difference]: With dead ends: 790 [2021-12-14 17:02:58,106 INFO L226 Difference]: Without dead ends: 597 [2021-12-14 17:02:58,108 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 581 GetRequests, 508 SyntacticMatches, 7 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1109 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=484, Invalid=4072, Unknown=0, NotChecked=0, Total=4556 [2021-12-14 17:02:58,109 INFO L933 BasicCegarLoop]: 258 mSDtfsCounter, 437 mSDsluCounter, 1254 mSDsCounter, 0 mSdLazyCounter, 4636 mSolverCounterSat, 360 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 1512 SdHoareTripleChecker+Invalid, 5703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 360 IncrementalHoareTripleChecker+Valid, 4636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 707 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-12-14 17:02:58,109 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [501 Valid, 1512 Invalid, 5703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [360 Valid, 4636 Invalid, 0 Unknown, 707 Unchecked, 3.2s Time] [2021-12-14 17:02:58,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2021-12-14 17:02:58,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 454. [2021-12-14 17:02:58,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454 states, 317 states have (on average 1.1451104100946372) internal successors, (363), 327 states have internal predecessors, (363), 99 states have call successors, (99), 28 states have call predecessors, (99), 37 states have return successors, (174), 99 states have call predecessors, (174), 98 states have call successors, (174) [2021-12-14 17:02:58,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 636 transitions. [2021-12-14 17:02:58,160 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 636 transitions. Word has length 232 [2021-12-14 17:02:58,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:02:58,161 INFO L470 AbstractCegarLoop]: Abstraction has 454 states and 636 transitions. [2021-12-14 17:02:58,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 5.419354838709677) internal successors, (168), 27 states have internal predecessors, (168), 11 states have call successors, (65), 9 states have call predecessors, (65), 9 states have return successors, (60), 10 states have call predecessors, (60), 10 states have call successors, (60) [2021-12-14 17:02:58,161 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 636 transitions. [2021-12-14 17:02:58,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2021-12-14 17:02:58,163 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:02:58,164 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-14 17:02:58,195 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0