./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 4c8e70dc7f77f825f3ef2e89303bbf356ceb3a21ef4dcf0b5c90667d3d62b0fd --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 15:31:34,009 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 15:31:34,011 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 15:31:34,046 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 15:31:34,046 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 15:31:34,047 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 15:31:34,048 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 15:31:34,049 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 15:31:34,062 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 15:31:34,068 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 15:31:34,069 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 15:31:34,069 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 15:31:34,070 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 15:31:34,070 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 15:31:34,071 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 15:31:34,072 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 15:31:34,072 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 15:31:34,073 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 15:31:34,074 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 15:31:34,075 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 15:31:34,077 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 15:31:34,092 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 15:31:34,093 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 15:31:34,093 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 15:31:34,100 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 15:31:34,100 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 15:31:34,100 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 15:31:34,102 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 15:31:34,102 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 15:31:34,103 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 15:31:34,103 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 15:31:34,104 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 15:31:34,105 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 15:31:34,106 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 15:31:34,107 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 15:31:34,107 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 15:31:34,108 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 15:31:34,108 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 15:31:34,108 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 15:31:34,109 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 15:31:34,109 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 15:31:34,110 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-21 15:31:34,143 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 15:31:34,143 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 15:31:34,144 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 15:31:34,144 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 15:31:34,145 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 15:31:34,145 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 15:31:34,146 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 15:31:34,146 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 15:31:34,146 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 15:31:34,146 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 15:31:34,147 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 15:31:34,147 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 15:31:34,147 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 15:31:34,147 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 15:31:34,148 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 15:31:34,148 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 15:31:34,148 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 15:31:34,148 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 15:31:34,148 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 15:31:34,149 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 15:31:34,149 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 15:31:34,149 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 15:31:34,149 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 15:31:34,149 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 15:31:34,149 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 15:31:34,149 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 15:31:34,150 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 15:31:34,151 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 15:31:34,151 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 15:31:34,151 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 15:31:34,151 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 15:31:34,151 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4c8e70dc7f77f825f3ef2e89303bbf356ceb3a21ef4dcf0b5c90667d3d62b0fd [2021-12-21 15:31:34,351 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 15:31:34,364 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 15:31:34,368 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 15:31:34,369 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 15:31:34,370 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 15:31:34,371 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i [2021-12-21 15:31:34,421 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e998e4784/681ad1bd75094fcf9aa49c27d5a0aee1/FLAG3153f0949 [2021-12-21 15:31:34,950 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 15:31:34,950 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i [2021-12-21 15:31:34,980 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e998e4784/681ad1bd75094fcf9aa49c27d5a0aee1/FLAG3153f0949 [2021-12-21 15:31:35,179 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e998e4784/681ad1bd75094fcf9aa49c27d5a0aee1 [2021-12-21 15:31:35,181 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 15:31:35,182 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 15:31:35,183 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 15:31:35,183 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 15:31:35,192 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 15:31:35,193 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 03:31:35" (1/1) ... [2021-12-21 15:31:35,195 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@332bbbc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:31:35, skipping insertion in model container [2021-12-21 15:31:35,195 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 03:31:35" (1/1) ... [2021-12-21 15:31:35,199 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 15:31:35,257 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 15:31:35,446 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i[4501,4514] [2021-12-21 15:31:35,451 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i[4561,4574] [2021-12-21 15:31:36,054 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:31:36,056 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:31:36,056 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:31:36,057 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:31:36,059 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:31:36,073 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:31:36,074 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:31:36,075 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:31:36,075 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:31:36,298 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-21 15:31:36,298 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-21 15:31:36,299 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-21 15:31:36,300 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-21 15:31:36,300 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-21 15:31:36,302 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-21 15:31:36,302 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-21 15:31:36,303 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-21 15:31:36,303 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-21 15:31:36,304 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-21 15:31:36,380 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-21 15:31:36,526 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:31:36,526 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:31:36,560 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 15:31:36,599 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 15:31:36,610 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_cursor_eq_byte_buf_harness.i[4501,4514] [2021-12-21 15:31:36,612 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i[4561,4574] [2021-12-21 15:31:36,647 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:31:36,648 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:31:36,648 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:31:36,649 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:31:36,650 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:31:36,662 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:31:36,664 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:31:36,664 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:31:36,665 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:31:36,705 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-21 15:31:36,706 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-21 15:31:36,706 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-21 15:31:36,706 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-21 15:31:36,707 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-21 15:31:36,708 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-21 15:31:36,709 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-21 15:31:36,709 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-21 15:31:36,710 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-21 15:31:36,710 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-21 15:31:36,735 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-21 15:31:36,796 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:31:36,797 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:31:36,861 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 15:31:37,042 INFO L208 MainTranslator]: Completed translation [2021-12-21 15:31:37,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:31:37 WrapperNode [2021-12-21 15:31:37,043 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 15:31:37,044 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 15:31:37,044 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 15:31:37,044 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 15:31:37,050 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:31:37" (1/1) ... [2021-12-21 15:31:37,164 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:31:37" (1/1) ... [2021-12-21 15:31:37,236 INFO L137 Inliner]: procedures = 691, calls = 2651, calls flagged for inlining = 65, calls inlined = 11, statements flattened = 934 [2021-12-21 15:31:37,236 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 15:31:37,237 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 15:31:37,237 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 15:31:37,237 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 15:31:37,246 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:31:37" (1/1) ... [2021-12-21 15:31:37,246 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:31:37" (1/1) ... [2021-12-21 15:31:37,256 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:31:37" (1/1) ... [2021-12-21 15:31:37,257 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:31:37" (1/1) ... [2021-12-21 15:31:37,301 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:31:37" (1/1) ... [2021-12-21 15:31:37,311 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:31:37" (1/1) ... [2021-12-21 15:31:37,316 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:31:37" (1/1) ... [2021-12-21 15:31:37,323 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 15:31:37,324 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 15:31:37,324 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 15:31:37,324 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 15:31:37,325 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:31:37" (1/1) ... [2021-12-21 15:31:37,335 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 15:31:37,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:31:37,377 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-21 15:31:37,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-21 15:31:37,432 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2021-12-21 15:31:37,433 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2021-12-21 15:31:37,433 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2021-12-21 15:31:37,433 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2021-12-21 15:31:37,434 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-12-21 15:31:37,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 15:31:37,434 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-12-21 15:31:37,434 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-12-21 15:31:37,434 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-21 15:31:37,435 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-21 15:31:37,435 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-21 15:31:37,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-21 15:31:37,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 15:31:37,436 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2021-12-21 15:31:37,436 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2021-12-21 15:31:37,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-21 15:31:37,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 15:31:37,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 15:31:37,437 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-21 15:31:37,437 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-21 15:31:37,437 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-12-21 15:31:37,437 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-12-21 15:31:37,437 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-21 15:31:37,437 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-21 15:31:37,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-21 15:31:37,438 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-21 15:31:37,438 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq [2021-12-21 15:31:37,438 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq [2021-12-21 15:31:37,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-21 15:31:37,438 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-12-21 15:31:37,439 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-12-21 15:31:37,439 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-12-21 15:31:37,440 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-12-21 15:31:37,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-21 15:31:37,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 15:31:37,709 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 15:31:37,710 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 15:31:38,375 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 15:31:38,384 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 15:31:38,384 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-21 15:31:38,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 03:31:38 BoogieIcfgContainer [2021-12-21 15:31:38,386 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 15:31:38,387 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 15:31:38,387 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 15:31:38,390 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 15:31:38,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 03:31:35" (1/3) ... [2021-12-21 15:31:38,390 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@148e47bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 03:31:38, skipping insertion in model container [2021-12-21 15:31:38,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:31:37" (2/3) ... [2021-12-21 15:31:38,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@148e47bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 03:31:38, skipping insertion in model container [2021-12-21 15:31:38,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 03:31:38" (3/3) ... [2021-12-21 15:31:38,392 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_eq_byte_buf_harness.i [2021-12-21 15:31:38,395 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 15:31:38,395 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 15:31:38,430 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 15:31:38,435 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-21 15:31:38,435 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 15:31:38,452 INFO L276 IsEmpty]: Start isEmpty. Operand has 161 states, 106 states have (on average 1.2547169811320755) internal successors, (133), 107 states have internal predecessors, (133), 42 states have call successors, (42), 11 states have call predecessors, (42), 11 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2021-12-21 15:31:38,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-21 15:31:38,463 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:31:38,464 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 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] [2021-12-21 15:31:38,464 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:31:38,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:31:38,468 INFO L85 PathProgramCache]: Analyzing trace with hash -745875764, now seen corresponding path program 1 times [2021-12-21 15:31:38,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:31:38,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549267687] [2021-12-21 15:31:38,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:31:38,475 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:31:38,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:38,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:31:38,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:38,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 15:31:38,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:38,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-21 15:31:38,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:38,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 15:31:38,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:38,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-21 15:31:38,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:38,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-21 15:31:38,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:38,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-21 15:31:38,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:38,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:31:38,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:39,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 15:31:39,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:39,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-21 15:31:39,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:39,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-21 15:31:39,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:39,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-21 15:31:39,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:39,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-21 15:31:39,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:39,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 15:31:39,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:39,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-21 15:31:39,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:39,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-21 15:31:39,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:39,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-21 15:31:39,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:39,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:31:39,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:39,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 15:31:39,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:39,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-21 15:31:39,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:39,144 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2021-12-21 15:31:39,144 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:31:39,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549267687] [2021-12-21 15:31:39,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549267687] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:31:39,146 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:31:39,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 15:31:39,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623278928] [2021-12-21 15:31:39,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:31:39,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 15:31:39,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:31:39,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 15:31:39,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 15:31:39,171 INFO L87 Difference]: Start difference. First operand has 161 states, 106 states have (on average 1.2547169811320755) internal successors, (133), 107 states have internal predecessors, (133), 42 states have call successors, (42), 11 states have call predecessors, (42), 11 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-21 15:31:39,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:31:39,475 INFO L93 Difference]: Finished difference Result 320 states and 462 transitions. [2021-12-21 15:31:39,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 15:31:39,477 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) Word has length 127 [2021-12-21 15:31:39,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:31:39,484 INFO L225 Difference]: With dead ends: 320 [2021-12-21 15:31:39,484 INFO L226 Difference]: Without dead ends: 157 [2021-12-21 15:31:39,487 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 15:31:39,489 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 143 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 15:31:39,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 287 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 15:31:39,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-12-21 15:31:39,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 155. [2021-12-21 15:31:39,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 101 states have (on average 1.2277227722772277) internal successors, (124), 102 states have internal predecessors, (124), 42 states have call successors, (42), 11 states have call predecessors, (42), 11 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2021-12-21 15:31:39,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 207 transitions. [2021-12-21 15:31:39,527 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 207 transitions. Word has length 127 [2021-12-21 15:31:39,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:31:39,528 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 207 transitions. [2021-12-21 15:31:39,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-21 15:31:39,528 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 207 transitions. [2021-12-21 15:31:39,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-21 15:31:39,534 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:31:39,535 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 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] [2021-12-21 15:31:39,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 15:31:39,535 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:31:39,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:31:39,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1855366526, now seen corresponding path program 1 times [2021-12-21 15:31:39,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:31:39,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513408235] [2021-12-21 15:31:39,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:31:39,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:31:39,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:39,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:31:39,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:39,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 15:31:39,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:39,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-21 15:31:39,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:39,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 15:31:39,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:39,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-21 15:31:39,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:39,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-21 15:31:39,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:39,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-21 15:31:39,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:39,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:31:39,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:39,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 15:31:39,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:39,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-21 15:31:39,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:39,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-21 15:31:39,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:39,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-21 15:31:39,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:39,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-21 15:31:39,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:39,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 15:31:39,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:39,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-21 15:31:39,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:39,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-21 15:31:39,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:39,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-21 15:31:39,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:39,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:31:39,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:39,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 15:31:39,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:39,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-21 15:31:39,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:39,887 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2021-12-21 15:31:39,888 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:31:39,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513408235] [2021-12-21 15:31:39,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513408235] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:31:39,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481553233] [2021-12-21 15:31:39,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:31:39,889 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:31:39,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:31:39,890 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:31:39,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-21 15:31:40,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:40,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 2764 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-21 15:31:40,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:31:40,635 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2021-12-21 15:31:40,635 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:31:40,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [481553233] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:31:40,636 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 15:31:40,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2021-12-21 15:31:40,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313889008] [2021-12-21 15:31:40,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:31:40,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 15:31:40,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:31:40,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 15:31:40,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-12-21 15:31:40,640 INFO L87 Difference]: Start difference. First operand 155 states and 207 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-21 15:31:40,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:31:40,844 INFO L93 Difference]: Finished difference Result 301 states and 403 transitions. [2021-12-21 15:31:40,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 15:31:40,844 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 127 [2021-12-21 15:31:40,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:31:40,846 INFO L225 Difference]: With dead ends: 301 [2021-12-21 15:31:40,846 INFO L226 Difference]: Without dead ends: 158 [2021-12-21 15:31:40,847 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-12-21 15:31:40,848 INFO L933 BasicCegarLoop]: 158 mSDtfsCounter, 229 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 15:31:40,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [229 Valid, 428 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 15:31:40,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-12-21 15:31:40,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2021-12-21 15:31:40,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 103 states have (on average 1.2233009708737863) internal successors, (126), 105 states have internal predecessors, (126), 42 states have call successors, (42), 11 states have call predecessors, (42), 12 states have return successors, (43), 41 states have call predecessors, (43), 41 states have call successors, (43) [2021-12-21 15:31:40,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 211 transitions. [2021-12-21 15:31:40,861 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 211 transitions. Word has length 127 [2021-12-21 15:31:40,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:31:40,862 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 211 transitions. [2021-12-21 15:31:40,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-21 15:31:40,863 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 211 transitions. [2021-12-21 15:31:40,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-12-21 15:31:40,865 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:31:40,865 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:31:40,889 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-21 15:31:41,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:31:41,080 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:31:41,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:31:41,080 INFO L85 PathProgramCache]: Analyzing trace with hash -2026465251, now seen corresponding path program 1 times [2021-12-21 15:31:41,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:31:41,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749606142] [2021-12-21 15:31:41,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:31:41,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:31:41,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:41,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:31:41,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:41,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 15:31:41,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:41,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-21 15:31:41,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:41,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-21 15:31:41,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:41,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-21 15:31:41,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:41,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-21 15:31:41,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:41,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-21 15:31:41,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:41,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:31:41,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:41,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-21 15:31:41,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:41,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-21 15:31:41,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:41,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-21 15:31:41,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:41,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-21 15:31:41,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:41,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-21 15:31:41,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:41,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-21 15:31:41,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:41,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-21 15:31:41,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:41,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-21 15:31:41,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:41,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-21 15:31:41,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:41,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:31:41,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:41,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 15:31:41,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:41,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-21 15:31:41,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:41,380 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2021-12-21 15:31:41,380 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:31:41,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749606142] [2021-12-21 15:31:41,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749606142] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:31:41,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298130365] [2021-12-21 15:31:41,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:31:41,381 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:31:41,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:31:41,382 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:31:41,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-21 15:31:41,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:41,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 2769 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-21 15:31:41,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:31:42,100 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2021-12-21 15:31:42,100 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:31:42,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [298130365] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:31:42,101 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 15:31:42,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2021-12-21 15:31:42,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650252635] [2021-12-21 15:31:42,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:31:42,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 15:31:42,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:31:42,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 15:31:42,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-12-21 15:31:42,103 INFO L87 Difference]: Start difference. First operand 158 states and 211 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-12-21 15:31:42,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:31:42,270 INFO L93 Difference]: Finished difference Result 282 states and 381 transitions. [2021-12-21 15:31:42,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 15:31:42,271 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 129 [2021-12-21 15:31:42,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:31:42,272 INFO L225 Difference]: With dead ends: 282 [2021-12-21 15:31:42,273 INFO L226 Difference]: Without dead ends: 161 [2021-12-21 15:31:42,273 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-12-21 15:31:42,274 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 228 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 15:31:42,274 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [228 Valid, 430 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 15:31:42,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-12-21 15:31:42,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2021-12-21 15:31:42,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 105 states have (on average 1.2190476190476192) internal successors, (128), 108 states have internal predecessors, (128), 42 states have call successors, (42), 11 states have call predecessors, (42), 13 states have return successors, (45), 41 states have call predecessors, (45), 41 states have call successors, (45) [2021-12-21 15:31:42,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 215 transitions. [2021-12-21 15:31:42,285 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 215 transitions. Word has length 129 [2021-12-21 15:31:42,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:31:42,285 INFO L470 AbstractCegarLoop]: Abstraction has 161 states and 215 transitions. [2021-12-21 15:31:42,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-12-21 15:31:42,285 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 215 transitions. [2021-12-21 15:31:42,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-21 15:31:42,287 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:31:42,288 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:31:42,311 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-21 15:31:42,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-12-21 15:31:42,503 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:31:42,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:31:42,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1696655400, now seen corresponding path program 1 times [2021-12-21 15:31:42,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:31:42,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756850127] [2021-12-21 15:31:42,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:31:42,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:31:42,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:42,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:31:42,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:42,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 15:31:42,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:42,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-21 15:31:42,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:42,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-21 15:31:42,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:42,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-21 15:31:42,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:42,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-21 15:31:42,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:42,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-21 15:31:42,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:42,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:31:42,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:42,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-21 15:31:42,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:42,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-21 15:31:42,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:42,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-21 15:31:42,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:42,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-21 15:31:42,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:42,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-21 15:31:42,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:42,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-21 15:31:42,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:42,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-21 15:31:42,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:42,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-21 15:31:42,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:42,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-21 15:31:42,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:42,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:31:42,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:42,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 15:31:42,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:42,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-21 15:31:42,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:42,788 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2021-12-21 15:31:42,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:31:42,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756850127] [2021-12-21 15:31:42,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756850127] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:31:42,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10389953] [2021-12-21 15:31:42,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:31:42,789 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:31:42,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:31:42,790 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:31:42,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-21 15:31:43,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:43,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 2786 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-21 15:31:43,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:31:43,537 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-12-21 15:31:43,537 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:31:43,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [10389953] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:31:43,537 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 15:31:43,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2021-12-21 15:31:43,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471350077] [2021-12-21 15:31:43,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:31:43,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 15:31:43,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:31:43,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 15:31:43,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-12-21 15:31:43,539 INFO L87 Difference]: Start difference. First operand 161 states and 215 transitions. Second operand has 7 states, 6 states have (on average 11.333333333333334) internal successors, (68), 7 states have internal predecessors, (68), 4 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) [2021-12-21 15:31:43,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:31:43,753 INFO L93 Difference]: Finished difference Result 271 states and 363 transitions. [2021-12-21 15:31:43,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 15:31:43,754 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.333333333333334) internal successors, (68), 7 states have internal predecessors, (68), 4 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) Word has length 135 [2021-12-21 15:31:43,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:31:43,755 INFO L225 Difference]: With dead ends: 271 [2021-12-21 15:31:43,755 INFO L226 Difference]: Without dead ends: 158 [2021-12-21 15:31:43,756 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2021-12-21 15:31:43,757 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 249 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 15:31:43,757 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [249 Valid, 560 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 15:31:43,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-12-21 15:31:43,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2021-12-21 15:31:43,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 103 states have (on average 1.2135922330097086) internal successors, (125), 105 states have internal predecessors, (125), 42 states have call successors, (42), 11 states have call predecessors, (42), 12 states have return successors, (43), 41 states have call predecessors, (43), 41 states have call successors, (43) [2021-12-21 15:31:43,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 210 transitions. [2021-12-21 15:31:43,769 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 210 transitions. Word has length 135 [2021-12-21 15:31:43,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:31:43,769 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 210 transitions. [2021-12-21 15:31:43,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.333333333333334) internal successors, (68), 7 states have internal predecessors, (68), 4 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) [2021-12-21 15:31:43,770 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 210 transitions. [2021-12-21 15:31:43,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-12-21 15:31:43,771 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:31:43,771 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:31:43,816 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-21 15:31:43,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:31:43,994 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:31:43,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:31:43,994 INFO L85 PathProgramCache]: Analyzing trace with hash -195762830, now seen corresponding path program 1 times [2021-12-21 15:31:43,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:31:43,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618062922] [2021-12-21 15:31:43,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:31:43,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:31:44,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:44,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:31:44,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:44,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 15:31:44,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:44,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-21 15:31:44,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:44,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-21 15:31:44,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:44,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-21 15:31:44,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:44,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-21 15:31:44,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:44,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-21 15:31:44,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:44,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:31:44,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:44,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-21 15:31:44,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:44,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-21 15:31:44,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:44,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-21 15:31:44,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:44,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-21 15:31:44,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:44,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-21 15:31:44,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:44,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-21 15:31:44,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:44,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-21 15:31:44,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:44,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-21 15:31:44,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:44,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-21 15:31:44,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:44,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:31:44,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:44,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 15:31:44,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:44,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-21 15:31:44,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:44,320 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2021-12-21 15:31:44,321 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:31:44,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618062922] [2021-12-21 15:31:44,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618062922] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:31:44,321 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:31:44,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 15:31:44,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78681983] [2021-12-21 15:31:44,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:31:44,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 15:31:44,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:31:44,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 15:31:44,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-21 15:31:44,323 INFO L87 Difference]: Start difference. First operand 158 states and 210 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 6 states have internal predecessors, (57), 4 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2021-12-21 15:31:44,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:31:44,801 INFO L93 Difference]: Finished difference Result 264 states and 351 transitions. [2021-12-21 15:31:44,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 15:31:44,802 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 6 states have internal predecessors, (57), 4 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 139 [2021-12-21 15:31:44,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:31:44,803 INFO L225 Difference]: With dead ends: 264 [2021-12-21 15:31:44,803 INFO L226 Difference]: Without dead ends: 157 [2021-12-21 15:31:44,804 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-12-21 15:31:44,804 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 228 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-21 15:31:44,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [231 Valid, 596 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-21 15:31:44,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-12-21 15:31:44,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 155. [2021-12-21 15:31:44,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 101 states have (on average 1.2079207920792079) internal successors, (122), 102 states have internal predecessors, (122), 42 states have call successors, (42), 11 states have call predecessors, (42), 11 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2021-12-21 15:31:44,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 205 transitions. [2021-12-21 15:31:44,812 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 205 transitions. Word has length 139 [2021-12-21 15:31:44,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:31:44,813 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 205 transitions. [2021-12-21 15:31:44,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 6 states have internal predecessors, (57), 4 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2021-12-21 15:31:44,813 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 205 transitions. [2021-12-21 15:31:44,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-21 15:31:44,814 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:31:44,814 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 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] [2021-12-21 15:31:44,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-21 15:31:44,814 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:31:44,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:31:44,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1542450691, now seen corresponding path program 1 times [2021-12-21 15:31:44,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:31:44,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871498109] [2021-12-21 15:31:44,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:31:44,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:31:44,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:44,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:31:44,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:44,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 15:31:44,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:44,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-21 15:31:44,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:44,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-21 15:31:44,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:44,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-21 15:31:44,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:44,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-21 15:31:44,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:44,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-21 15:31:44,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:45,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:31:45,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:45,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-21 15:31:45,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:45,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-21 15:31:45,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:45,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-21 15:31:45,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:45,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-21 15:31:45,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:45,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-21 15:31:45,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:45,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-21 15:31:45,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:45,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-21 15:31:45,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:45,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-21 15:31:45,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:45,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-21 15:31:45,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:45,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:31:45,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:45,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 15:31:45,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:45,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-21 15:31:45,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:45,139 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2021-12-21 15:31:45,140 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:31:45,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871498109] [2021-12-21 15:31:45,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871498109] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:31:45,140 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:31:45,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-21 15:31:45,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313682834] [2021-12-21 15:31:45,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:31:45,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-21 15:31:45,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:31:45,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-21 15:31:45,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-21 15:31:45,142 INFO L87 Difference]: Start difference. First operand 155 states and 205 transitions. Second operand has 10 states, 9 states have (on average 6.333333333333333) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 1 states have call successors, (20) [2021-12-21 15:31:45,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:31:45,687 INFO L93 Difference]: Finished difference Result 169 states and 223 transitions. [2021-12-21 15:31:45,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-21 15:31:45,688 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.333333333333333) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 1 states have call successors, (20) Word has length 145 [2021-12-21 15:31:45,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:31:45,690 INFO L225 Difference]: With dead ends: 169 [2021-12-21 15:31:45,690 INFO L226 Difference]: Without dead ends: 167 [2021-12-21 15:31:45,690 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-12-21 15:31:45,691 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 163 mSDsluCounter, 838 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 1020 SdHoareTripleChecker+Invalid, 696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-21 15:31:45,691 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [165 Valid, 1020 Invalid, 696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 597 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-21 15:31:45,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-12-21 15:31:45,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 164. [2021-12-21 15:31:45,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 107 states have (on average 1.1962616822429906) internal successors, (128), 109 states have internal predecessors, (128), 43 states have call successors, (43), 12 states have call predecessors, (43), 13 states have return successors, (46), 42 states have call predecessors, (46), 42 states have call successors, (46) [2021-12-21 15:31:45,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 217 transitions. [2021-12-21 15:31:45,712 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 217 transitions. Word has length 145 [2021-12-21 15:31:45,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:31:45,713 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 217 transitions. [2021-12-21 15:31:45,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.333333333333333) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 1 states have call successors, (20) [2021-12-21 15:31:45,713 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 217 transitions. [2021-12-21 15:31:45,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-12-21 15:31:45,714 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:31:45,714 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:31:45,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-21 15:31:45,714 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:31:45,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:31:45,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1440515461, now seen corresponding path program 1 times [2021-12-21 15:31:45,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:31:45,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031880873] [2021-12-21 15:31:45,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:31:45,715 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:31:45,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:46,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:31:46,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:46,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 15:31:46,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:46,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-21 15:31:46,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:46,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-21 15:31:46,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:46,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-21 15:31:46,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:46,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-21 15:31:46,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:46,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-21 15:31:46,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:46,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:31:46,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:46,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-21 15:31:46,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:46,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-21 15:31:46,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:46,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-21 15:31:46,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:46,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-21 15:31:46,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:46,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-21 15:31:46,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:46,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-21 15:31:46,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:46,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-21 15:31:46,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:46,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-21 15:31:46,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:46,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-21 15:31:46,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:46,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:31:46,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:46,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 15:31:46,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:46,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-21 15:31:46,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:46,379 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2021-12-21 15:31:46,380 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:31:46,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031880873] [2021-12-21 15:31:46,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031880873] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:31:46,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398240481] [2021-12-21 15:31:46,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:31:46,381 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:31:46,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:31:46,382 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:31:46,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-21 15:31:46,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:46,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 2825 conjuncts, 38 conjunts are in the unsatisfiable core [2021-12-21 15:31:46,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:31:46,976 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-21 15:31:47,364 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-12-21 15:31:47,365 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:31:47,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398240481] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:31:47,365 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 15:31:47,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [18] total 28 [2021-12-21 15:31:47,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281704291] [2021-12-21 15:31:47,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:31:47,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-21 15:31:47,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:31:47,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-21 15:31:47,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=681, Unknown=0, NotChecked=0, Total=756 [2021-12-21 15:31:47,367 INFO L87 Difference]: Start difference. First operand 164 states and 217 transitions. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 10 states have internal predecessors, (77), 5 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) [2021-12-21 15:31:47,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:31:47,480 INFO L93 Difference]: Finished difference Result 308 states and 407 transitions. [2021-12-21 15:31:47,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-21 15:31:47,481 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 10 states have internal predecessors, (77), 5 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) Word has length 149 [2021-12-21 15:31:47,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:31:47,483 INFO L225 Difference]: With dead ends: 308 [2021-12-21 15:31:47,483 INFO L226 Difference]: Without dead ends: 177 [2021-12-21 15:31:47,484 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=81, Invalid=731, Unknown=0, NotChecked=0, Total=812 [2021-12-21 15:31:47,484 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 27 mSDsluCounter, 1266 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1465 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 87 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 15:31:47,485 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 1465 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 70 Invalid, 0 Unknown, 87 Unchecked, 0.1s Time] [2021-12-21 15:31:47,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-12-21 15:31:47,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2021-12-21 15:31:47,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 119 states have (on average 1.2016806722689075) internal successors, (143), 121 states have internal predecessors, (143), 43 states have call successors, (43), 13 states have call predecessors, (43), 14 states have return successors, (47), 42 states have call predecessors, (47), 42 states have call successors, (47) [2021-12-21 15:31:47,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 233 transitions. [2021-12-21 15:31:47,497 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 233 transitions. Word has length 149 [2021-12-21 15:31:47,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:31:47,498 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 233 transitions. [2021-12-21 15:31:47,498 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 10 states have internal predecessors, (77), 5 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) [2021-12-21 15:31:47,498 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 233 transitions. [2021-12-21 15:31:47,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-12-21 15:31:47,500 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:31:47,500 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:31:47,528 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-21 15:31:47,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:31:47,711 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:31:47,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:31:47,712 INFO L85 PathProgramCache]: Analyzing trace with hash 669781895, now seen corresponding path program 1 times [2021-12-21 15:31:47,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:31:47,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390612996] [2021-12-21 15:31:47,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:31:47,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:31:47,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:47,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:31:47,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:47,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 15:31:47,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:47,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-21 15:31:47,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:47,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-21 15:31:47,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:47,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-21 15:31:47,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:47,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-21 15:31:47,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:47,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-21 15:31:47,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:47,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:31:47,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:47,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-21 15:31:47,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:47,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-21 15:31:47,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:47,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-21 15:31:47,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:47,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-21 15:31:47,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:47,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-21 15:31:47,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:47,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-21 15:31:47,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:47,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-21 15:31:47,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:47,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-21 15:31:47,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:47,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-21 15:31:47,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:47,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:31:47,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:47,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 15:31:47,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:47,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-21 15:31:47,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:47,939 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2021-12-21 15:31:47,940 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:31:47,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390612996] [2021-12-21 15:31:47,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390612996] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:31:47,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774949963] [2021-12-21 15:31:47,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:31:47,940 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:31:47,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:31:47,942 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:31:47,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-21 15:31:48,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:48,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 2820 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-21 15:31:48,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:31:48,534 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-12-21 15:31:48,534 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:31:48,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [774949963] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:31:48,534 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 15:31:48,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2021-12-21 15:31:48,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72404039] [2021-12-21 15:31:48,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:31:48,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 15:31:48,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:31:48,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 15:31:48,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 15:31:48,536 INFO L87 Difference]: Start difference. First operand 177 states and 233 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-21 15:31:48,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:31:48,568 INFO L93 Difference]: Finished difference Result 314 states and 419 transitions. [2021-12-21 15:31:48,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 15:31:48,569 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 149 [2021-12-21 15:31:48,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:31:48,570 INFO L225 Difference]: With dead ends: 314 [2021-12-21 15:31:48,570 INFO L226 Difference]: Without dead ends: 183 [2021-12-21 15:31:48,570 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-21 15:31:48,571 INFO L933 BasicCegarLoop]: 216 mSDtfsCounter, 20 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 607 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 15:31:48,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 607 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 15:31:48,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-12-21 15:31:48,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 171. [2021-12-21 15:31:48,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 114 states have (on average 1.2017543859649122) internal successors, (137), 115 states have internal predecessors, (137), 43 states have call successors, (43), 13 states have call predecessors, (43), 13 states have return successors, (46), 42 states have call predecessors, (46), 42 states have call successors, (46) [2021-12-21 15:31:48,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 226 transitions. [2021-12-21 15:31:48,601 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 226 transitions. Word has length 149 [2021-12-21 15:31:48,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:31:48,602 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 226 transitions. [2021-12-21 15:31:48,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-21 15:31:48,602 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 226 transitions. [2021-12-21 15:31:48,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-12-21 15:31:48,603 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:31:48,603 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:31:48,624 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-21 15:31:48,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:31:48,823 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:31:48,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:31:48,824 INFO L85 PathProgramCache]: Analyzing trace with hash -383679283, now seen corresponding path program 1 times [2021-12-21 15:31:48,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:31:48,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829185014] [2021-12-21 15:31:48,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:31:48,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:31:48,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:48,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:31:48,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:49,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 15:31:49,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:49,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-21 15:31:49,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:49,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-21 15:31:49,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:49,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-21 15:31:49,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:49,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-21 15:31:49,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:49,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-21 15:31:49,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:49,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:31:49,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:49,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-21 15:31:49,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:49,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-21 15:31:49,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:49,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-21 15:31:49,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:49,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 15:31:49,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:49,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-21 15:31:49,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:49,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-21 15:31:49,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:49,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-21 15:31:49,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:49,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-21 15:31:49,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:49,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-21 15:31:49,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:49,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:31:49,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:49,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 15:31:49,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:49,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-21 15:31:49,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:49,174 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 12 proven. 16 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2021-12-21 15:31:49,174 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:31:49,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829185014] [2021-12-21 15:31:49,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829185014] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:31:49,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269795763] [2021-12-21 15:31:49,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:31:49,175 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:31:49,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:31:49,180 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:31:49,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-21 15:31:49,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:49,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 2837 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-21 15:31:49,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:31:49,826 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-12-21 15:31:49,826 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:31:49,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [269795763] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:31:49,826 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 15:31:49,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 12 [2021-12-21 15:31:49,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022078687] [2021-12-21 15:31:49,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:31:49,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 15:31:49,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:31:49,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 15:31:49,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2021-12-21 15:31:49,828 INFO L87 Difference]: Start difference. First operand 171 states and 226 transitions. Second operand has 9 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 3 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-12-21 15:31:49,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:31:49,931 INFO L93 Difference]: Finished difference Result 305 states and 405 transitions. [2021-12-21 15:31:49,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 15:31:49,932 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 3 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 153 [2021-12-21 15:31:49,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:31:49,932 INFO L225 Difference]: With dead ends: 305 [2021-12-21 15:31:49,933 INFO L226 Difference]: Without dead ends: 176 [2021-12-21 15:31:49,933 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 189 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2021-12-21 15:31:49,933 INFO L933 BasicCegarLoop]: 193 mSDtfsCounter, 12 mSDsluCounter, 1307 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1500 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 15:31:49,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 1500 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 15:31:49,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-12-21 15:31:49,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2021-12-21 15:31:49,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 118 states have (on average 1.194915254237288) internal successors, (141), 120 states have internal predecessors, (141), 43 states have call successors, (43), 13 states have call predecessors, (43), 14 states have return successors, (49), 42 states have call predecessors, (49), 42 states have call successors, (49) [2021-12-21 15:31:49,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 233 transitions. [2021-12-21 15:31:49,941 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 233 transitions. Word has length 153 [2021-12-21 15:31:49,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:31:49,942 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 233 transitions. [2021-12-21 15:31:49,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 3 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-12-21 15:31:49,942 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 233 transitions. [2021-12-21 15:31:49,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-12-21 15:31:49,943 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:31:49,943 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:31:49,979 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-21 15:31:50,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:31:50,154 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:31:50,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:31:50,155 INFO L85 PathProgramCache]: Analyzing trace with hash 3909140, now seen corresponding path program 1 times [2021-12-21 15:31:50,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:31:50,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142696650] [2021-12-21 15:31:50,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:31:50,155 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:31:50,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:50,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:31:50,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:50,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 15:31:50,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:50,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-21 15:31:50,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:50,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-21 15:31:50,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:50,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-21 15:31:50,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:50,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-21 15:31:50,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:50,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-21 15:31:50,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:50,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:31:50,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:50,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-21 15:31:50,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:50,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-21 15:31:50,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:50,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-21 15:31:50,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:50,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-21 15:31:50,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:50,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-21 15:31:50,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:50,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-21 15:31:50,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:50,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-21 15:31:50,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:50,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-21 15:31:50,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:50,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-21 15:31:50,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:50,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:31:50,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:50,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 15:31:50,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:50,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-21 15:31:50,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:50,730 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2021-12-21 15:31:50,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:31:50,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142696650] [2021-12-21 15:31:50,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142696650] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:31:50,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195648124] [2021-12-21 15:31:50,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:31:50,731 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:31:50,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:31:50,732 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:31:50,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-21 15:31:51,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:51,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 2847 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-21 15:31:51,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:31:51,422 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-12-21 15:31:51,422 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:31:51,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195648124] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:31:51,422 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 15:31:51,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [18] total 22 [2021-12-21 15:31:51,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563916630] [2021-12-21 15:31:51,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:31:51,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 15:31:51,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:31:51,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 15:31:51,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=410, Unknown=0, NotChecked=0, Total=462 [2021-12-21 15:31:51,426 INFO L87 Difference]: Start difference. First operand 176 states and 233 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-21 15:31:51,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:31:51,633 INFO L93 Difference]: Finished difference Result 348 states and 467 transitions. [2021-12-21 15:31:51,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 15:31:51,635 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 155 [2021-12-21 15:31:51,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:31:51,636 INFO L225 Difference]: With dead ends: 348 [2021-12-21 15:31:51,636 INFO L226 Difference]: Without dead ends: 214 [2021-12-21 15:31:51,637 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-12-21 15:31:51,637 INFO L933 BasicCegarLoop]: 207 mSDtfsCounter, 53 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 874 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 45 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 15:31:51,637 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 874 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 136 Invalid, 0 Unknown, 45 Unchecked, 0.1s Time] [2021-12-21 15:31:51,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2021-12-21 15:31:51,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 188. [2021-12-21 15:31:51,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 130 states have (on average 1.2153846153846153) internal successors, (158), 132 states have internal predecessors, (158), 43 states have call successors, (43), 13 states have call predecessors, (43), 14 states have return successors, (49), 42 states have call predecessors, (49), 42 states have call successors, (49) [2021-12-21 15:31:51,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 250 transitions. [2021-12-21 15:31:51,646 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 250 transitions. Word has length 155 [2021-12-21 15:31:51,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:31:51,646 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 250 transitions. [2021-12-21 15:31:51,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-21 15:31:51,646 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 250 transitions. [2021-12-21 15:31:51,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-12-21 15:31:51,647 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:31:51,648 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:31:51,672 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-21 15:31:51,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:31:51,863 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:31:51,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:31:51,864 INFO L85 PathProgramCache]: Analyzing trace with hash 774642706, now seen corresponding path program 1 times [2021-12-21 15:31:51,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:31:51,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925773204] [2021-12-21 15:31:51,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:31:51,864 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:31:51,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:52,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:31:52,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:52,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 15:31:52,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:52,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-21 15:31:52,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:52,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-21 15:31:52,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:52,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-21 15:31:52,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:52,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-21 15:31:52,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:52,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-21 15:31:52,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:52,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:31:52,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:52,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-21 15:31:52,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:52,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-21 15:31:52,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:52,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-21 15:31:52,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:52,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-21 15:31:52,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:52,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-21 15:31:52,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:52,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-21 15:31:52,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:52,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-21 15:31:52,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:52,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-21 15:31:52,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:52,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-21 15:31:52,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:52,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:31:52,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:52,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 15:31:52,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:52,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-21 15:31:52,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:52,458 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2021-12-21 15:31:52,458 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:31:52,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925773204] [2021-12-21 15:31:52,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925773204] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:31:52,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420032887] [2021-12-21 15:31:52,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:31:52,459 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:31:52,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:31:52,460 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:31:52,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-21 15:31:52,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:52,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 2842 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-21 15:31:52,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:31:53,151 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-12-21 15:31:53,152 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:31:53,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420032887] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:31:53,152 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 15:31:53,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [18] total 21 [2021-12-21 15:31:53,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750286641] [2021-12-21 15:31:53,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:31:53,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 15:31:53,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:31:53,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 15:31:53,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=370, Unknown=0, NotChecked=0, Total=420 [2021-12-21 15:31:53,154 INFO L87 Difference]: Start difference. First operand 188 states and 250 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-21 15:31:53,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:31:53,289 INFO L93 Difference]: Finished difference Result 349 states and 474 transitions. [2021-12-21 15:31:53,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 15:31:53,289 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 155 [2021-12-21 15:31:53,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:31:53,290 INFO L225 Difference]: With dead ends: 349 [2021-12-21 15:31:53,290 INFO L226 Difference]: Without dead ends: 207 [2021-12-21 15:31:53,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=408, Unknown=0, NotChecked=0, Total=462 [2021-12-21 15:31:53,291 INFO L933 BasicCegarLoop]: 207 mSDtfsCounter, 42 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 43 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 15:31:53,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 708 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 90 Invalid, 0 Unknown, 43 Unchecked, 0.1s Time] [2021-12-21 15:31:53,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-12-21 15:31:53,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 191. [2021-12-21 15:31:53,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 133 states have (on average 1.2030075187969924) internal successors, (160), 135 states have internal predecessors, (160), 43 states have call successors, (43), 13 states have call predecessors, (43), 14 states have return successors, (49), 42 states have call predecessors, (49), 42 states have call successors, (49) [2021-12-21 15:31:53,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 252 transitions. [2021-12-21 15:31:53,300 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 252 transitions. Word has length 155 [2021-12-21 15:31:53,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:31:53,300 INFO L470 AbstractCegarLoop]: Abstraction has 191 states and 252 transitions. [2021-12-21 15:31:53,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-21 15:31:53,300 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 252 transitions. [2021-12-21 15:31:53,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-12-21 15:31:53,302 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:31:53,302 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:31:53,330 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-21 15:31:53,530 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,SelfDestructingSolverStorable10 [2021-12-21 15:31:53,530 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:31:53,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:31:53,531 INFO L85 PathProgramCache]: Analyzing trace with hash 746142416, now seen corresponding path program 1 times [2021-12-21 15:31:53,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:31:53,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975329919] [2021-12-21 15:31:53,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:31:53,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:31:53,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:53,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:31:53,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:53,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 15:31:53,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:53,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-21 15:31:53,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:53,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-21 15:31:53,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:53,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-21 15:31:53,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:53,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-21 15:31:53,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:53,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-21 15:31:53,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:53,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:31:53,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:53,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-21 15:31:53,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:53,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-21 15:31:53,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:53,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-21 15:31:53,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:53,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-21 15:31:53,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:53,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-21 15:31:53,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:53,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-21 15:31:53,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:53,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-21 15:31:53,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:53,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-21 15:31:53,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:53,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-21 15:31:53,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:53,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:31:53,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:53,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 15:31:53,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:53,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-21 15:31:53,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:53,786 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2021-12-21 15:31:53,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:31:53,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975329919] [2021-12-21 15:31:53,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975329919] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:31:53,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705993750] [2021-12-21 15:31:53,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:31:53,786 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:31:53,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:31:53,788 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:31:53,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-21 15:31:54,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:54,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 2837 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-21 15:31:54,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:31:54,373 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-12-21 15:31:54,373 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:31:54,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1705993750] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:31:54,373 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 15:31:54,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2021-12-21 15:31:54,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421546801] [2021-12-21 15:31:54,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:31:54,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 15:31:54,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:31:54,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 15:31:54,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 15:31:54,375 INFO L87 Difference]: Start difference. First operand 191 states and 252 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-21 15:31:54,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:31:54,399 INFO L93 Difference]: Finished difference Result 340 states and 453 transitions. [2021-12-21 15:31:54,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 15:31:54,400 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 155 [2021-12-21 15:31:54,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:31:54,403 INFO L225 Difference]: With dead ends: 340 [2021-12-21 15:31:54,403 INFO L226 Difference]: Without dead ends: 191 [2021-12-21 15:31:54,403 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-21 15:31:54,404 INFO L933 BasicCegarLoop]: 202 mSDtfsCounter, 9 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 15:31:54,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 600 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 15:31:54,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2021-12-21 15:31:54,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 185. [2021-12-21 15:31:54,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 127 states have (on average 1.188976377952756) internal successors, (151), 129 states have internal predecessors, (151), 43 states have call successors, (43), 13 states have call predecessors, (43), 14 states have return successors, (49), 42 states have call predecessors, (49), 42 states have call successors, (49) [2021-12-21 15:31:54,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 243 transitions. [2021-12-21 15:31:54,412 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 243 transitions. Word has length 155 [2021-12-21 15:31:54,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:31:54,413 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 243 transitions. [2021-12-21 15:31:54,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-21 15:31:54,413 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 243 transitions. [2021-12-21 15:31:54,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-12-21 15:31:54,414 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:31:54,414 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:31:54,437 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-21 15:31:54,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:31:54,631 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:31:54,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:31:54,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1604980246, now seen corresponding path program 1 times [2021-12-21 15:31:54,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:31:54,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720386878] [2021-12-21 15:31:54,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:31:54,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:31:54,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:54,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:31:54,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:54,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 15:31:54,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:54,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-21 15:31:54,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:54,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-21 15:31:54,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:54,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-21 15:31:54,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:54,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-21 15:31:54,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:54,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-21 15:31:54,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:54,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:31:54,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:54,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-21 15:31:54,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:54,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-21 15:31:54,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:54,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-21 15:31:54,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:54,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-21 15:31:54,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:54,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-21 15:31:54,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:54,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-21 15:31:54,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:54,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-21 15:31:54,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:54,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-21 15:31:54,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:54,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-21 15:31:54,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:54,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:31:54,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:54,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 15:31:54,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:54,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-21 15:31:54,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:54,877 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2021-12-21 15:31:54,877 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:31:54,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720386878] [2021-12-21 15:31:54,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720386878] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:31:54,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137935711] [2021-12-21 15:31:54,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:31:54,878 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:31:54,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:31:54,879 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:31:54,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-21 15:31:55,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:55,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 2844 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-21 15:31:55,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:31:55,477 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-12-21 15:31:55,477 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:31:55,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [137935711] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:31:55,477 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 15:31:55,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2021-12-21 15:31:55,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225069516] [2021-12-21 15:31:55,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:31:55,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 15:31:55,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:31:55,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 15:31:55,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 15:31:55,478 INFO L87 Difference]: Start difference. First operand 185 states and 243 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, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-21 15:31:55,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:31:55,499 INFO L93 Difference]: Finished difference Result 339 states and 449 transitions. [2021-12-21 15:31:55,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 15:31:55,500 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, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 155 [2021-12-21 15:31:55,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:31:55,501 INFO L225 Difference]: With dead ends: 339 [2021-12-21 15:31:55,501 INFO L226 Difference]: Without dead ends: 196 [2021-12-21 15:31:55,502 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-21 15:31:55,502 INFO L933 BasicCegarLoop]: 202 mSDtfsCounter, 34 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 598 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 [2021-12-21 15:31:55,502 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 598 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 15:31:55,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-12-21 15:31:55,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 181. [2021-12-21 15:31:55,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 123 states have (on average 1.170731707317073) internal successors, (144), 125 states have internal predecessors, (144), 43 states have call successors, (43), 13 states have call predecessors, (43), 14 states have return successors, (49), 42 states have call predecessors, (49), 42 states have call successors, (49) [2021-12-21 15:31:55,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 236 transitions. [2021-12-21 15:31:55,509 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 236 transitions. Word has length 155 [2021-12-21 15:31:55,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:31:55,509 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 236 transitions. [2021-12-21 15:31:55,510 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, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-21 15:31:55,510 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 236 transitions. [2021-12-21 15:31:55,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-12-21 15:31:55,510 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:31:55,511 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:31:55,533 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-21 15:31:55,711 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,SelfDestructingSolverStorable12 [2021-12-21 15:31:55,711 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:31:55,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:31:55,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1338601832, now seen corresponding path program 1 times [2021-12-21 15:31:55,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:31:55,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871426571] [2021-12-21 15:31:55,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:31:55,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:31:55,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:55,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:31:55,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:55,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 15:31:55,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:56,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-21 15:31:56,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:56,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-21 15:31:56,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:56,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-21 15:31:56,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:56,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-21 15:31:56,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:56,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-21 15:31:56,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:56,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:31:56,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:56,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-21 15:31:56,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:56,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-21 15:31:56,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:56,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-21 15:31:56,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:56,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-21 15:31:56,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:56,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-21 15:31:56,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:56,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-21 15:31:56,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:56,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-21 15:31:56,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:56,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-21 15:31:56,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:56,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-21 15:31:56,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:56,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:31:56,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:56,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 15:31:56,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:56,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-21 15:31:56,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:56,268 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2021-12-21 15:31:56,268 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:31:56,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871426571] [2021-12-21 15:31:56,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871426571] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:31:56,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834402100] [2021-12-21 15:31:56,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:31:56,269 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:31:56,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:31:56,270 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:31:56,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-21 15:31:56,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:31:56,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 2839 conjuncts, 52 conjunts are in the unsatisfiable core [2021-12-21 15:31:56,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:31:56,961 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-21 15:31:57,508 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2021-12-21 15:31:57,511 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2021-12-21 15:31:57,714 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 121 proven. 4 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2021-12-21 15:31:57,714 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 15:31:58,364 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 25 [2021-12-21 15:31:58,584 INFO L353 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2021-12-21 15:31:58,584 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2021-12-21 15:31:58,697 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 34 [2021-12-21 15:31:58,926 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2021-12-21 15:31:58,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1834402100] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 15:31:58,926 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 15:31:58,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 16] total 47 [2021-12-21 15:31:58,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431884696] [2021-12-21 15:31:58,927 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 15:31:58,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2021-12-21 15:31:58,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:31:58,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-12-21 15:31:58,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1994, Unknown=0, NotChecked=0, Total=2162 [2021-12-21 15:31:58,929 INFO L87 Difference]: Start difference. First operand 181 states and 236 transitions. Second operand has 47 states, 44 states have (on average 4.7272727272727275) internal successors, (208), 42 states have internal predecessors, (208), 20 states have call successors, (58), 9 states have call predecessors, (58), 14 states have return successors, (57), 17 states have call predecessors, (57), 20 states have call successors, (57) [2021-12-21 15:32:05,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:32:05,832 INFO L93 Difference]: Finished difference Result 720 states and 1020 transitions. [2021-12-21 15:32:05,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-12-21 15:32:05,832 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 44 states have (on average 4.7272727272727275) internal successors, (208), 42 states have internal predecessors, (208), 20 states have call successors, (58), 9 states have call predecessors, (58), 14 states have return successors, (57), 17 states have call predecessors, (57), 20 states have call successors, (57) Word has length 155 [2021-12-21 15:32:05,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:32:05,838 INFO L225 Difference]: With dead ends: 720 [2021-12-21 15:32:05,839 INFO L226 Difference]: Without dead ends: 584 [2021-12-21 15:32:05,843 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 345 SyntacticMatches, 2 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2770 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=852, Invalid=9048, Unknown=0, NotChecked=0, Total=9900 [2021-12-21 15:32:05,843 INFO L933 BasicCegarLoop]: 267 mSDtfsCounter, 964 mSDsluCounter, 3041 mSDsCounter, 0 mSdLazyCounter, 8317 mSolverCounterSat, 728 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1019 SdHoareTripleChecker+Valid, 3308 SdHoareTripleChecker+Invalid, 10515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 728 IncrementalHoareTripleChecker+Valid, 8317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1470 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2021-12-21 15:32:05,843 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1019 Valid, 3308 Invalid, 10515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [728 Valid, 8317 Invalid, 0 Unknown, 1470 Unchecked, 5.2s Time] [2021-12-21 15:32:05,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2021-12-21 15:32:05,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 406. [2021-12-21 15:32:05,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 261 states have (on average 1.157088122605364) internal successors, (302), 265 states have internal predecessors, (302), 114 states have call successors, (114), 27 states have call predecessors, (114), 30 states have return successors, (128), 113 states have call predecessors, (128), 112 states have call successors, (128) [2021-12-21 15:32:05,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 544 transitions. [2021-12-21 15:32:05,878 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 544 transitions. Word has length 155 [2021-12-21 15:32:05,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:32:05,883 INFO L470 AbstractCegarLoop]: Abstraction has 406 states and 544 transitions. [2021-12-21 15:32:05,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 44 states have (on average 4.7272727272727275) internal successors, (208), 42 states have internal predecessors, (208), 20 states have call successors, (58), 9 states have call predecessors, (58), 14 states have return successors, (57), 17 states have call predecessors, (57), 20 states have call successors, (57) [2021-12-21 15:32:05,884 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 544 transitions. [2021-12-21 15:32:05,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-12-21 15:32:05,885 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:32:05,885 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:32:05,909 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-21 15:32:06,085 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,SelfDestructingSolverStorable13 [2021-12-21 15:32:06,086 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:32:06,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:32:06,086 INFO L85 PathProgramCache]: Analyzing trace with hash -58694250, now seen corresponding path program 1 times [2021-12-21 15:32:06,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:32:06,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29396908] [2021-12-21 15:32:06,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:32:06,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:32:06,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:06,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:32:06,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:06,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 15:32:06,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:06,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-21 15:32:06,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:06,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-21 15:32:06,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:06,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-21 15:32:06,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:06,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-21 15:32:06,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:06,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-21 15:32:06,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:06,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:32:06,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:06,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-21 15:32:06,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:06,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-21 15:32:06,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:06,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 15:32:06,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:06,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-21 15:32:06,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:06,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-21 15:32:06,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:06,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-21 15:32:06,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:06,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-21 15:32:06,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:06,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-21 15:32:06,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:06,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-21 15:32:06,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:06,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:32:06,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:06,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 15:32:06,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:06,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-21 15:32:06,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:06,392 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 3 proven. 31 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2021-12-21 15:32:06,392 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:32:06,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29396908] [2021-12-21 15:32:06,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29396908] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:32:06,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827200363] [2021-12-21 15:32:06,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:32:06,393 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:32:06,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:32:06,394 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:32:06,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-21 15:32:06,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:06,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 2858 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-21 15:32:06,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:32:07,018 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2021-12-21 15:32:07,018 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:32:07,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1827200363] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:32:07,018 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 15:32:07,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 12 [2021-12-21 15:32:07,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696442976] [2021-12-21 15:32:07,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:32:07,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 15:32:07,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:32:07,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 15:32:07,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2021-12-21 15:32:07,020 INFO L87 Difference]: Start difference. First operand 406 states and 544 transitions. Second operand has 9 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 3 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-12-21 15:32:07,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:32:07,137 INFO L93 Difference]: Finished difference Result 744 states and 983 transitions. [2021-12-21 15:32:07,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 15:32:07,138 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 3 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 163 [2021-12-21 15:32:07,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:32:07,142 INFO L225 Difference]: With dead ends: 744 [2021-12-21 15:32:07,142 INFO L226 Difference]: Without dead ends: 416 [2021-12-21 15:32:07,145 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 199 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2021-12-21 15:32:07,146 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 12 mSDsluCounter, 1331 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1529 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 15:32:07,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 1529 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 15:32:07,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2021-12-21 15:32:07,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 411. [2021-12-21 15:32:07,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 265 states have (on average 1.1547169811320754) internal successors, (306), 270 states have internal predecessors, (306), 114 states have call successors, (114), 27 states have call predecessors, (114), 31 states have return successors, (131), 113 states have call predecessors, (131), 112 states have call successors, (131) [2021-12-21 15:32:07,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 551 transitions. [2021-12-21 15:32:07,169 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 551 transitions. Word has length 163 [2021-12-21 15:32:07,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:32:07,170 INFO L470 AbstractCegarLoop]: Abstraction has 411 states and 551 transitions. [2021-12-21 15:32:07,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 3 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-12-21 15:32:07,170 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 551 transitions. [2021-12-21 15:32:07,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-12-21 15:32:07,176 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:32:07,176 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:32:07,203 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-12-21 15:32:07,399 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,SelfDestructingSolverStorable14 [2021-12-21 15:32:07,399 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:32:07,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:32:07,400 INFO L85 PathProgramCache]: Analyzing trace with hash 113744330, now seen corresponding path program 1 times [2021-12-21 15:32:07,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:32:07,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796224354] [2021-12-21 15:32:07,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:32:07,400 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:32:07,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:07,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:32:07,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:07,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 15:32:07,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:07,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-21 15:32:07,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:07,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-21 15:32:07,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:07,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-21 15:32:07,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:07,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-21 15:32:07,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:07,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-21 15:32:07,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:07,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:32:07,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:07,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-21 15:32:07,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:07,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-21 15:32:07,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:07,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-21 15:32:07,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:07,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:32:07,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:07,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 15:32:07,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:07,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-21 15:32:07,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:07,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-21 15:32:07,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:07,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-21 15:32:07,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:07,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-21 15:32:07,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:07,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-21 15:32:07,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:07,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:32:07,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:07,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 15:32:07,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:07,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-21 15:32:07,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:07,768 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 22 proven. 14 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2021-12-21 15:32:07,769 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:32:07,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796224354] [2021-12-21 15:32:07,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796224354] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:32:07,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215665716] [2021-12-21 15:32:07,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:32:07,769 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:32:07,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:32:07,770 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:32:07,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-21 15:32:08,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:08,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 2891 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-21 15:32:08,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:32:08,418 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2021-12-21 15:32:08,419 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:32:08,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [215665716] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:32:08,419 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 15:32:08,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 12 [2021-12-21 15:32:08,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698193936] [2021-12-21 15:32:08,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:32:08,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 15:32:08,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:32:08,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 15:32:08,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2021-12-21 15:32:08,420 INFO L87 Difference]: Start difference. First operand 411 states and 551 transitions. Second operand has 9 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 3 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-12-21 15:32:08,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:32:08,539 INFO L93 Difference]: Finished difference Result 637 states and 848 transitions. [2021-12-21 15:32:08,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 15:32:08,540 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 3 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 166 [2021-12-21 15:32:08,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:32:08,542 INFO L225 Difference]: With dead ends: 637 [2021-12-21 15:32:08,542 INFO L226 Difference]: Without dead ends: 416 [2021-12-21 15:32:08,543 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 204 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2021-12-21 15:32:08,543 INFO L933 BasicCegarLoop]: 197 mSDtfsCounter, 12 mSDsluCounter, 1324 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1521 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 15:32:08,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 1521 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 15:32:08,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2021-12-21 15:32:08,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 416. [2021-12-21 15:32:08,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 269 states have (on average 1.1524163568773234) internal successors, (310), 275 states have internal predecessors, (310), 114 states have call successors, (114), 27 states have call predecessors, (114), 32 states have return successors, (132), 113 states have call predecessors, (132), 112 states have call successors, (132) [2021-12-21 15:32:08,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 556 transitions. [2021-12-21 15:32:08,562 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 556 transitions. Word has length 166 [2021-12-21 15:32:08,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:32:08,563 INFO L470 AbstractCegarLoop]: Abstraction has 416 states and 556 transitions. [2021-12-21 15:32:08,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 3 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-12-21 15:32:08,563 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 556 transitions. [2021-12-21 15:32:08,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-12-21 15:32:08,565 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:32:08,565 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:32:08,588 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-12-21 15:32:08,779 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,SelfDestructingSolverStorable15 [2021-12-21 15:32:08,779 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:32:08,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:32:08,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1083621485, now seen corresponding path program 1 times [2021-12-21 15:32:08,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:32:08,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582617200] [2021-12-21 15:32:08,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:32:08,780 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:32:08,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:09,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:32:09,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:09,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 15:32:09,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:09,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-21 15:32:09,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:09,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-21 15:32:09,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:09,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-21 15:32:09,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:09,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-21 15:32:09,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:09,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-21 15:32:09,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:09,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:32:09,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:09,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-21 15:32:09,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:09,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-21 15:32:09,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:09,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-21 15:32:09,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:09,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:32:09,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:09,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 15:32:09,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:09,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-21 15:32:09,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:09,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-21 15:32:09,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:09,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-21 15:32:09,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:09,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-21 15:32:09,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:09,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-21 15:32:09,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:09,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:32:09,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:09,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 15:32:09,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:09,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-21 15:32:09,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:09,368 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2021-12-21 15:32:09,368 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:32:09,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582617200] [2021-12-21 15:32:09,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582617200] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:32:09,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944346805] [2021-12-21 15:32:09,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:32:09,369 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:32:09,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:32:09,370 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:32:09,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-21 15:32:09,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:09,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 2901 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-21 15:32:09,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:32:10,030 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-12-21 15:32:10,030 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:32:10,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [944346805] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:32:10,030 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 15:32:10,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [16] total 19 [2021-12-21 15:32:10,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178993108] [2021-12-21 15:32:10,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:32:10,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 15:32:10,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:32:10,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 15:32:10,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2021-12-21 15:32:10,032 INFO L87 Difference]: Start difference. First operand 416 states and 556 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-21 15:32:10,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:32:10,185 INFO L93 Difference]: Finished difference Result 754 states and 999 transitions. [2021-12-21 15:32:10,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 15:32:10,186 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 168 [2021-12-21 15:32:10,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:32:10,192 INFO L225 Difference]: With dead ends: 754 [2021-12-21 15:32:10,192 INFO L226 Difference]: Without dead ends: 416 [2021-12-21 15:32:10,193 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2021-12-21 15:32:10,193 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 17 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 706 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 39 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 15:32:10,194 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 706 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 39 Unchecked, 0.1s Time] [2021-12-21 15:32:10,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2021-12-21 15:32:10,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 416. [2021-12-21 15:32:10,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 269 states have (on average 1.1449814126394051) internal successors, (308), 275 states have internal predecessors, (308), 114 states have call successors, (114), 27 states have call predecessors, (114), 32 states have return successors, (132), 113 states have call predecessors, (132), 112 states have call successors, (132) [2021-12-21 15:32:10,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 554 transitions. [2021-12-21 15:32:10,211 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 554 transitions. Word has length 168 [2021-12-21 15:32:10,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:32:10,212 INFO L470 AbstractCegarLoop]: Abstraction has 416 states and 554 transitions. [2021-12-21 15:32:10,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-21 15:32:10,212 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 554 transitions. [2021-12-21 15:32:10,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-12-21 15:32:10,213 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:32:10,213 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:32:10,233 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-12-21 15:32:10,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:32:10,431 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:32:10,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:32:10,432 INFO L85 PathProgramCache]: Analyzing trace with hash 666224879, now seen corresponding path program 1 times [2021-12-21 15:32:10,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:32:10,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740163324] [2021-12-21 15:32:10,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:32:10,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:32:10,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:10,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:32:10,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:10,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 15:32:10,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:10,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-21 15:32:10,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:10,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-21 15:32:10,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:10,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-21 15:32:10,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:10,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-21 15:32:10,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:10,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-21 15:32:10,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:10,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:32:10,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:10,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-21 15:32:10,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:10,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-21 15:32:10,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:10,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-21 15:32:10,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:10,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:32:10,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:10,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 15:32:10,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:10,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-21 15:32:10,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:10,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-21 15:32:10,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:10,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-21 15:32:10,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:10,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-21 15:32:10,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:10,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-21 15:32:10,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:10,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:32:10,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:10,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 15:32:10,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:10,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-21 15:32:10,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:10,956 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2021-12-21 15:32:10,956 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:32:10,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740163324] [2021-12-21 15:32:10,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740163324] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:32:10,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076883639] [2021-12-21 15:32:10,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:32:10,957 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:32:10,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:32:10,958 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:32:10,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-21 15:32:11,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:11,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 2906 conjuncts, 70 conjunts are in the unsatisfiable core [2021-12-21 15:32:11,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:32:11,439 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-21 15:32:11,440 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-12-21 15:32:12,000 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-21 15:32:12,001 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2021-12-21 15:32:12,046 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-21 15:32:12,714 INFO L353 Elim1Store]: treesize reduction 22, result has 40.5 percent of original size [2021-12-21 15:32:12,714 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 24 [2021-12-21 15:32:12,870 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-21 15:32:12,872 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-21 15:32:12,894 WARN L860 $PredicateComparison]: unable to prove that (and (< 0 |c_#StackHeapBarrier|) (exists ((v_ArrVal_1446 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_save_byte_from_array_#in~storage#1.base| v_ArrVal_1446))) (exists ((v_ArrVal_1447 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_save_byte_from_array_#in~storage#1.base| v_ArrVal_1447)))) is different from true [2021-12-21 15:32:12,918 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 27 [2021-12-21 15:32:12,921 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2021-12-21 15:32:12,963 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2021-12-21 15:32:12,966 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2021-12-21 15:32:13,155 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 137 proven. 30 refuted. 0 times theorem prover too weak. 54 trivial. 2 not checked. [2021-12-21 15:32:13,155 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 15:32:13,578 WARN L838 $PredicateComparison]: unable to prove that (and (<= 0 |c_#StackHeapBarrier|) (forall ((v_ArrVal_1455 (Array Int Int))) (< 0 (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_aws_byte_cursor_eq_byte_buf_harness_~#old_byte_from_cur~0#1.base| v_ArrVal_1455) |c_ULTIMATE.start_aws_byte_cursor_eq_byte_buf_harness_~#buf~3#1.base|) |c_ULTIMATE.start_aws_byte_cursor_eq_byte_buf_harness_~#buf~3#1.offset|) 18446744073709551616))) (forall ((v_ArrVal_1454 (Array Int Int))) (not (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_aws_byte_cursor_eq_byte_buf_harness_~#old_byte_from_cur~0#1.base| v_ArrVal_1454) |c_ULTIMATE.start_aws_byte_cursor_eq_byte_buf_harness_~#buf~3#1.base|) (+ |c_ULTIMATE.start_aws_byte_cursor_eq_byte_buf_harness_~#buf~3#1.offset| 8)) 0)))) is different from false [2021-12-21 15:32:13,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076883639] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:32:13,580 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-21 15:32:13,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 25] total 39 [2021-12-21 15:32:13,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623170775] [2021-12-21 15:32:13,580 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-21 15:32:13,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-12-21 15:32:13,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:32:13,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-12-21 15:32:13,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1503, Unknown=3, NotChecked=158, Total=1806 [2021-12-21 15:32:13,582 INFO L87 Difference]: Start difference. First operand 416 states and 554 transitions. Second operand has 39 states, 36 states have (on average 4.694444444444445) internal successors, (169), 32 states have internal predecessors, (169), 17 states have call successors, (43), 10 states have call predecessors, (43), 11 states have return successors, (42), 15 states have call predecessors, (42), 17 states have call successors, (42) [2021-12-21 15:32:18,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:32:18,911 INFO L93 Difference]: Finished difference Result 1265 states and 1774 transitions. [2021-12-21 15:32:18,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-12-21 15:32:18,911 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 36 states have (on average 4.694444444444445) internal successors, (169), 32 states have internal predecessors, (169), 17 states have call successors, (43), 10 states have call predecessors, (43), 11 states have return successors, (42), 15 states have call predecessors, (42), 17 states have call successors, (42) Word has length 168 [2021-12-21 15:32:18,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:32:18,916 INFO L225 Difference]: With dead ends: 1265 [2021-12-21 15:32:18,917 INFO L226 Difference]: Without dead ends: 970 [2021-12-21 15:32:18,920 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 266 SyntacticMatches, 14 SemanticMatches, 87 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 2240 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=643, Invalid=6830, Unknown=17, NotChecked=342, Total=7832 [2021-12-21 15:32:18,920 INFO L933 BasicCegarLoop]: 347 mSDtfsCounter, 561 mSDsluCounter, 3660 mSDsCounter, 0 mSdLazyCounter, 5892 mSolverCounterSat, 584 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 657 SdHoareTripleChecker+Valid, 4007 SdHoareTripleChecker+Invalid, 8505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 584 IncrementalHoareTripleChecker+Valid, 5892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2029 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-12-21 15:32:18,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [657 Valid, 4007 Invalid, 8505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [584 Valid, 5892 Invalid, 0 Unknown, 2029 Unchecked, 3.8s Time] [2021-12-21 15:32:18,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2021-12-21 15:32:18,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 489. [2021-12-21 15:32:18,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 323 states have (on average 1.1238390092879258) internal successors, (363), 329 states have internal predecessors, (363), 124 states have call successors, (124), 38 states have call predecessors, (124), 41 states have return successors, (142), 121 states have call predecessors, (142), 122 states have call successors, (142) [2021-12-21 15:32:18,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 629 transitions. [2021-12-21 15:32:18,963 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 629 transitions. Word has length 168 [2021-12-21 15:32:18,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:32:18,963 INFO L470 AbstractCegarLoop]: Abstraction has 489 states and 629 transitions. [2021-12-21 15:32:18,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 36 states have (on average 4.694444444444445) internal successors, (169), 32 states have internal predecessors, (169), 17 states have call successors, (43), 10 states have call predecessors, (43), 11 states have return successors, (42), 15 states have call predecessors, (42), 17 states have call successors, (42) [2021-12-21 15:32:18,964 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 629 transitions. [2021-12-21 15:32:18,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-12-21 15:32:18,966 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:32:18,966 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:32:18,992 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-12-21 15:32:19,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-12-21 15:32:19,171 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:32:19,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:32:19,172 INFO L85 PathProgramCache]: Analyzing trace with hash -259459643, now seen corresponding path program 2 times [2021-12-21 15:32:19,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:32:19,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249305990] [2021-12-21 15:32:19,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:32:19,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:32:19,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:19,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:32:19,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:19,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 15:32:19,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:19,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-21 15:32:19,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:19,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-21 15:32:19,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:19,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-21 15:32:19,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:19,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-21 15:32:19,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:19,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-21 15:32:19,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:19,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:32:19,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:19,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-21 15:32:19,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:19,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-21 15:32:19,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:19,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-21 15:32:19,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:19,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-21 15:32:19,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:19,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:32:19,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:19,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-21 15:32:19,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:19,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-21 15:32:19,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:19,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-21 15:32:19,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:19,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-21 15:32:19,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:19,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-21 15:32:19,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:19,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:32:19,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:19,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 15:32:19,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:19,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-21 15:32:19,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:32:19,976 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 1 proven. 23 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2021-12-21 15:32:19,976 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:32:19,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249305990] [2021-12-21 15:32:19,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249305990] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:32:19,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677254226] [2021-12-21 15:32:19,977 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-21 15:32:19,977 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:32:19,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:32:19,978 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:32:19,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-12-21 15:32:21,248 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-21 15:32:21,248 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 15:32:21,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 2906 conjuncts, 65 conjunts are in the unsatisfiable core [2021-12-21 15:32:21,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:32:23,687 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((|v_ULTIMATE.start_aws_byte_cursor_eq_byte_buf_~a#1.base_BEFORE_CALL_3| Int)) (not (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_cursor_eq_byte_buf_~a#1.base_BEFORE_CALL_3|) 8) 0))) (exists ((|v_ULTIMATE.start_aws_byte_cursor_eq_byte_buf_~a#1.base_BEFORE_CALL_3| Int)) (not (= (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_aws_byte_cursor_eq_byte_buf_~a#1.base_BEFORE_CALL_3|) 8) 0))) (exists ((|v_ULTIMATE.start_aws_byte_cursor_eq_byte_buf_~a#1.base_BEFORE_CALL_3| Int)) (= (mod (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_cursor_eq_byte_buf_~a#1.base_BEFORE_CALL_3|) 0) 18446744073709551616) 0))) is different from true