./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_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 c2c8100e1f648cee1922c84a2421989bafb670d4445ddc160c17e3cd878eaa49 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-16 20:16:18,114 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-16 20:16:18,116 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-16 20:16:18,156 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-16 20:16:18,156 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-16 20:16:18,157 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-16 20:16:18,158 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-16 20:16:18,159 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-16 20:16:18,160 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-16 20:16:18,161 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-16 20:16:18,162 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-16 20:16:18,163 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-16 20:16:18,176 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-16 20:16:18,178 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-16 20:16:18,179 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-16 20:16:18,180 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-16 20:16:18,182 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-16 20:16:18,185 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-16 20:16:18,187 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-16 20:16:18,188 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-16 20:16:18,190 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-16 20:16:18,193 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-16 20:16:18,193 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-16 20:16:18,194 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-16 20:16:18,196 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-16 20:16:18,198 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-16 20:16:18,198 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-16 20:16:18,199 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-16 20:16:18,200 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-16 20:16:18,201 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-16 20:16:18,201 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-16 20:16:18,202 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-16 20:16:18,202 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-16 20:16:18,203 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-16 20:16:18,205 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-16 20:16:18,206 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-16 20:16:18,206 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-16 20:16:18,207 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-16 20:16:18,207 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-16 20:16:18,207 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-16 20:16:18,208 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-16 20:16:18,209 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-16 20:16:18,236 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-16 20:16:18,238 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-16 20:16:18,238 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-16 20:16:18,239 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-16 20:16:18,239 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-16 20:16:18,240 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-16 20:16:18,240 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-16 20:16:18,240 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-16 20:16:18,240 INFO L138 SettingsManager]: * Use SBE=true [2021-11-16 20:16:18,241 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-16 20:16:18,241 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-16 20:16:18,241 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-16 20:16:18,242 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-16 20:16:18,242 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-16 20:16:18,242 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-16 20:16:18,242 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-16 20:16:18,242 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-16 20:16:18,242 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-16 20:16:18,243 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-16 20:16:18,243 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-16 20:16:18,243 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-16 20:16:18,243 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-16 20:16:18,243 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-16 20:16:18,243 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-16 20:16:18,244 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-16 20:16:18,244 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-16 20:16:18,244 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-16 20:16:18,245 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-16 20:16:18,245 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-16 20:16:18,245 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-16 20:16:18,246 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-16 20:16:18,246 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c2c8100e1f648cee1922c84a2421989bafb670d4445ddc160c17e3cd878eaa49 [2021-11-16 20:16:18,450 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-16 20:16:18,475 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-16 20:16:18,477 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-16 20:16:18,478 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-16 20:16:18,483 INFO L275 PluginConnector]: CDTParser initialized [2021-11-16 20:16:18,484 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_harness.i [2021-11-16 20:16:18,535 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/442fcc174/2ef19e726ed54df5bd260e7e779cb1c8/FLAG73bfe4fa0 [2021-11-16 20:16:19,181 INFO L306 CDTParser]: Found 1 translation units. [2021-11-16 20:16:19,181 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_harness.i [2021-11-16 20:16:19,212 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/442fcc174/2ef19e726ed54df5bd260e7e779cb1c8/FLAG73bfe4fa0 [2021-11-16 20:16:19,511 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/442fcc174/2ef19e726ed54df5bd260e7e779cb1c8 [2021-11-16 20:16:19,513 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-16 20:16:19,514 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-16 20:16:19,517 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-16 20:16:19,517 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-16 20:16:19,520 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-16 20:16:19,521 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:16:19" (1/1) ... [2021-11-16 20:16:19,521 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@95fdded and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:16:19, skipping insertion in model container [2021-11-16 20:16:19,522 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:16:19" (1/1) ... [2021-11-16 20:16:19,526 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-16 20:16:19,607 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-16 20:16:19,789 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_harness.i[4495,4508] [2021-11-16 20:16:19,794 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_harness.i[4555,4568] [2021-11-16 20:16:19,810 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-16 20:16:19,827 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-16 20:16:20,450 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:16:20,451 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:16:20,452 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:16:20,453 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:16:20,454 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:16:20,471 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:16:20,472 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:16:20,473 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:16:20,473 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:16:20,722 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-16 20:16:20,724 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-16 20:16:20,724 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-16 20:16:20,725 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-16 20:16:20,726 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-16 20:16:20,726 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-16 20:16:20,727 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-16 20:16:20,727 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-16 20:16:20,728 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-16 20:16:20,729 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-16 20:16:20,822 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-16 20:16:20,928 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:16:20,929 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:16:20,969 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-16 20:16:21,008 INFO L203 MainTranslator]: Completed pre-run [2021-11-16 20:16:21,032 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_harness.i[4495,4508] [2021-11-16 20:16:21,033 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_harness.i[4555,4568] [2021-11-16 20:16:21,035 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-16 20:16:21,036 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-16 20:16:21,061 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:16:21,062 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:16:21,062 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:16:21,062 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:16:21,062 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:16:21,069 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:16:21,070 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:16:21,071 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:16:21,071 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:16:21,099 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-16 20:16:21,099 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-16 20:16:21,100 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-16 20:16:21,100 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-16 20:16:21,101 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-16 20:16:21,101 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-16 20:16:21,101 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-16 20:16:21,102 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-16 20:16:21,102 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-16 20:16:21,102 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-16 20:16:21,113 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-16 20:16:21,144 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:16:21,144 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:16:21,177 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-16 20:16:21,322 INFO L208 MainTranslator]: Completed translation [2021-11-16 20:16:21,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:16:21 WrapperNode [2021-11-16 20:16:21,323 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-16 20:16:21,324 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-16 20:16:21,324 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-16 20:16:21,324 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-16 20:16:21,328 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:16:21" (1/1) ... [2021-11-16 20:16:21,415 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:16:21" (1/1) ... [2021-11-16 20:16:21,487 INFO L137 Inliner]: procedures = 693, calls = 2504, calls flagged for inlining = 53, calls inlined = 4, statements flattened = 749 [2021-11-16 20:16:21,488 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-16 20:16:21,489 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-16 20:16:21,489 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-16 20:16:21,489 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-16 20:16:21,495 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:16:21" (1/1) ... [2021-11-16 20:16:21,495 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:16:21" (1/1) ... [2021-11-16 20:16:21,509 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:16:21" (1/1) ... [2021-11-16 20:16:21,510 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:16:21" (1/1) ... [2021-11-16 20:16:21,547 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:16:21" (1/1) ... [2021-11-16 20:16:21,556 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:16:21" (1/1) ... [2021-11-16 20:16:21,560 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:16:21" (1/1) ... [2021-11-16 20:16:21,572 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-16 20:16:21,576 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-16 20:16:21,576 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-16 20:16:21,576 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-16 20:16:21,578 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:16:21" (1/1) ... [2021-11-16 20:16:21,582 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-16 20:16:21,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 20:16:21,603 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) [2021-11-16 20:16:21,622 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 [2021-11-16 20:16:21,634 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_clean_up [2021-11-16 20:16:21,634 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_clean_up [2021-11-16 20:16:21,634 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2021-11-16 20:16:21,635 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2021-11-16 20:16:21,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-16 20:16:21,635 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-16 20:16:21,636 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-16 20:16:21,636 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-16 20:16:21,636 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-16 20:16:21,637 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-16 20:16:21,637 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-16 20:16:21,637 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-16 20:16:21,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-16 20:16:21,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-16 20:16:21,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-16 20:16:21,638 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-16 20:16:21,638 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-16 20:16:21,638 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2021-11-16 20:16:21,638 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2021-11-16 20:16:21,638 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-16 20:16:21,639 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-16 20:16:21,639 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-16 20:16:21,639 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-16 20:16:21,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-16 20:16:21,639 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-16 20:16:21,640 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-16 20:16:21,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-16 20:16:21,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-16 20:16:21,861 INFO L236 CfgBuilder]: Building ICFG [2021-11-16 20:16:21,862 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-16 20:16:22,761 INFO L277 CfgBuilder]: Performing block encoding [2021-11-16 20:16:22,766 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-16 20:16:22,767 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-16 20:16:22,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:16:22 BoogieIcfgContainer [2021-11-16 20:16:22,768 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-16 20:16:22,769 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-16 20:16:22,769 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-16 20:16:22,772 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-16 20:16:22,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 08:16:19" (1/3) ... [2021-11-16 20:16:22,773 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43e054dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:16:22, skipping insertion in model container [2021-11-16 20:16:22,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:16:21" (2/3) ... [2021-11-16 20:16:22,773 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43e054dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:16:22, skipping insertion in model container [2021-11-16 20:16:22,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:16:22" (3/3) ... [2021-11-16 20:16:22,774 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_clean_up_harness.i [2021-11-16 20:16:22,780 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-16 20:16:22,780 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-16 20:16:22,814 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-16 20:16:22,818 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 [2021-11-16 20:16:22,819 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-16 20:16:22,836 INFO L276 IsEmpty]: Start isEmpty. Operand has 84 states, 58 states have (on average 1.2413793103448276) internal successors, (72), 59 states have internal predecessors, (72), 16 states have call successors, (16), 8 states have call predecessors, (16), 8 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-16 20:16:22,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-16 20:16:22,842 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:16:22,842 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2021-11-16 20:16:22,843 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:16:22,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:16:22,850 INFO L85 PathProgramCache]: Analyzing trace with hash 877800461, now seen corresponding path program 1 times [2021-11-16 20:16:22,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:16:22,856 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252751754] [2021-11-16 20:16:22,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:16:22,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:16:23,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:23,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 20:16:23,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:23,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-16 20:16:23,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:23,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:16:23,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:23,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-16 20:16:23,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:23,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-16 20:16:23,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:23,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-16 20:16:23,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:23,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:16:23,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:23,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-16 20:16:23,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:23,373 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-16 20:16:23,377 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:16:23,377 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252751754] [2021-11-16 20:16:23,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252751754] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 20:16:23,378 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 20:16:23,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-16 20:16:23,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783475603] [2021-11-16 20:16:23,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 20:16:23,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-16 20:16:23,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:16:23,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-16 20:16:23,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-16 20:16:23,408 INFO L87 Difference]: Start difference. First operand has 84 states, 58 states have (on average 1.2413793103448276) internal successors, (72), 59 states have internal predecessors, (72), 16 states have call successors, (16), 8 states have call predecessors, (16), 8 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-16 20:16:25,460 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 20:16:25,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:16:26,000 INFO L93 Difference]: Finished difference Result 158 states and 207 transitions. [2021-11-16 20:16:26,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-16 20:16:26,002 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 56 [2021-11-16 20:16:26,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:16:26,008 INFO L225 Difference]: With dead ends: 158 [2021-11-16 20:16:26,009 INFO L226 Difference]: Without dead ends: 85 [2021-11-16 20:16:26,011 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-16 20:16:26,013 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 97 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 44 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-16 20:16:26,014 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 111 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 63 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2021-11-16 20:16:26,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-11-16 20:16:26,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 79. [2021-11-16 20:16:26,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 54 states have (on average 1.2222222222222223) internal successors, (66), 55 states have internal predecessors, (66), 16 states have call successors, (16), 8 states have call predecessors, (16), 8 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-16 20:16:26,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 97 transitions. [2021-11-16 20:16:26,043 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 97 transitions. Word has length 56 [2021-11-16 20:16:26,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:16:26,043 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 97 transitions. [2021-11-16 20:16:26,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-16 20:16:26,044 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 97 transitions. [2021-11-16 20:16:26,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-16 20:16:26,045 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:16:26,046 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2021-11-16 20:16:26,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-16 20:16:26,046 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:16:26,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:16:26,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1602789575, now seen corresponding path program 1 times [2021-11-16 20:16:26,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:16:26,047 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734366113] [2021-11-16 20:16:26,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:16:26,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:16:26,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:26,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 20:16:26,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:26,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-16 20:16:26,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:26,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:16:26,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:26,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-16 20:16:26,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:26,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-16 20:16:26,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:26,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-16 20:16:26,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:26,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:16:26,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:26,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-16 20:16:26,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:26,296 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-16 20:16:26,296 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:16:26,296 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734366113] [2021-11-16 20:16:26,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734366113] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-16 20:16:26,297 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370649148] [2021-11-16 20:16:26,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:16:26,298 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:16:26,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 20:16:26,299 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) [2021-11-16 20:16:26,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-16 20:16:26,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:26,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 2396 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-16 20:16:26,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 20:16:26,916 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-16 20:16:26,916 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-16 20:16:26,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1370649148] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 20:16:26,917 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-16 20:16:26,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2021-11-16 20:16:26,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814224089] [2021-11-16 20:16:26,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 20:16:26,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-16 20:16:26,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:16:26,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-16 20:16:26,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-11-16 20:16:26,919 INFO L87 Difference]: Start difference. First operand 79 states and 97 transitions. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-16 20:16:27,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:16:27,025 INFO L93 Difference]: Finished difference Result 139 states and 173 transitions. [2021-11-16 20:16:27,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-16 20:16:27,025 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 56 [2021-11-16 20:16:27,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:16:27,028 INFO L225 Difference]: With dead ends: 139 [2021-11-16 20:16:27,028 INFO L226 Difference]: Without dead ends: 82 [2021-11-16 20:16:27,029 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-11-16 20:16:27,033 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 116 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-16 20:16:27,033 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 225 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-16 20:16:27,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-11-16 20:16:27,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2021-11-16 20:16:27,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 56 states have (on average 1.2142857142857142) internal successors, (68), 58 states have internal predecessors, (68), 16 states have call successors, (16), 8 states have call predecessors, (16), 9 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) [2021-11-16 20:16:27,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 100 transitions. [2021-11-16 20:16:27,053 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 100 transitions. Word has length 56 [2021-11-16 20:16:27,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:16:27,053 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 100 transitions. [2021-11-16 20:16:27,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-16 20:16:27,054 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 100 transitions. [2021-11-16 20:16:27,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-16 20:16:27,055 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:16:27,055 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 20:16:27,075 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-16 20:16:27,257 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 [2021-11-16 20:16:27,257 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:16:27,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:16:27,258 INFO L85 PathProgramCache]: Analyzing trace with hash -737763694, now seen corresponding path program 1 times [2021-11-16 20:16:27,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:16:27,258 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059052589] [2021-11-16 20:16:27,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:16:27,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:16:27,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:27,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 20:16:27,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:27,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-16 20:16:27,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:27,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:16:27,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:27,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-16 20:16:27,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:27,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-16 20:16:27,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:27,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-16 20:16:27,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:27,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:16:27,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:27,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-16 20:16:27,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:27,606 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-16 20:16:27,607 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:16:27,607 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059052589] [2021-11-16 20:16:27,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059052589] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-16 20:16:27,607 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494423978] [2021-11-16 20:16:27,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:16:27,608 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:16:27,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 20:16:27,609 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) [2021-11-16 20:16:27,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-16 20:16:27,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:27,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 2413 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-16 20:16:27,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 20:16:28,171 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-16 20:16:28,172 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-16 20:16:28,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1494423978] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 20:16:28,172 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-16 20:16:28,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [13] total 19 [2021-11-16 20:16:28,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041801894] [2021-11-16 20:16:28,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 20:16:28,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-16 20:16:28,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:16:28,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-16 20:16:28,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2021-11-16 20:16:28,174 INFO L87 Difference]: Start difference. First operand 82 states and 100 transitions. Second operand has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 8 states have internal predecessors, (39), 5 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-16 20:16:28,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:16:28,339 INFO L93 Difference]: Finished difference Result 105 states and 129 transitions. [2021-11-16 20:16:28,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-16 20:16:28,340 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 8 states have internal predecessors, (39), 5 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 62 [2021-11-16 20:16:28,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:16:28,341 INFO L225 Difference]: With dead ends: 105 [2021-11-16 20:16:28,341 INFO L226 Difference]: Without dead ends: 79 [2021-11-16 20:16:28,341 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=478, Unknown=0, NotChecked=0, Total=552 [2021-11-16 20:16:28,342 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 140 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-16 20:16:28,342 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 398 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-16 20:16:28,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-11-16 20:16:28,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2021-11-16 20:16:28,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 54 states have (on average 1.2037037037037037) internal successors, (65), 55 states have internal predecessors, (65), 16 states have call successors, (16), 8 states have call predecessors, (16), 8 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-16 20:16:28,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 96 transitions. [2021-11-16 20:16:28,347 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 96 transitions. Word has length 62 [2021-11-16 20:16:28,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:16:28,347 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 96 transitions. [2021-11-16 20:16:28,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 8 states have internal predecessors, (39), 5 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-16 20:16:28,347 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 96 transitions. [2021-11-16 20:16:28,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-16 20:16:28,348 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:16:28,348 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-16 20:16:28,370 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-16 20:16:28,551 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 [2021-11-16 20:16:28,552 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:16:28,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:16:28,552 INFO L85 PathProgramCache]: Analyzing trace with hash -218893667, now seen corresponding path program 1 times [2021-11-16 20:16:28,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:16:28,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435719934] [2021-11-16 20:16:28,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:16:28,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:16:28,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:28,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 20:16:28,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:28,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-16 20:16:28,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:28,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:16:28,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:28,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-16 20:16:28,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:28,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-16 20:16:28,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:28,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-16 20:16:28,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:28,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:16:28,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:28,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-16 20:16:28,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:28,986 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-16 20:16:28,987 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:16:28,987 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435719934] [2021-11-16 20:16:28,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435719934] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-16 20:16:28,987 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1730542606] [2021-11-16 20:16:28,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:16:28,987 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:16:28,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 20:16:28,989 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) [2021-11-16 20:16:28,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-16 20:16:29,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:29,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 2430 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-16 20:16:29,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 20:16:29,432 INFO L388 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 18 treesize of output 14 [2021-11-16 20:16:29,783 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-16 20:16:29,784 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-16 20:16:30,017 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 34 [2021-11-16 20:16:30,074 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-16 20:16:30,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1730542606] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-16 20:16:30,074 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-16 20:16:30,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [12, 11] total 22 [2021-11-16 20:16:30,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298541180] [2021-11-16 20:16:30,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 20:16:30,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-16 20:16:30,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:16:30,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-16 20:16:30,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=402, Unknown=0, NotChecked=0, Total=462 [2021-11-16 20:16:30,076 INFO L87 Difference]: Start difference. First operand 79 states and 96 transitions. Second operand has 10 states, 10 states have (on average 3.5) internal successors, (35), 8 states have internal predecessors, (35), 5 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-16 20:16:32,208 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 20:16:32,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:16:32,982 INFO L93 Difference]: Finished difference Result 97 states and 117 transitions. [2021-11-16 20:16:32,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-16 20:16:32,982 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 8 states have internal predecessors, (35), 5 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) Word has length 68 [2021-11-16 20:16:32,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:16:32,983 INFO L225 Difference]: With dead ends: 97 [2021-11-16 20:16:32,983 INFO L226 Difference]: Without dead ends: 80 [2021-11-16 20:16:32,984 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 136 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=82, Invalid=568, Unknown=0, NotChecked=0, Total=650 [2021-11-16 20:16:32,984 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 69 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-11-16 20:16:32,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 179 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-11-16 20:16:32,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-11-16 20:16:32,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2021-11-16 20:16:32,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 55 states have (on average 1.2) internal successors, (66), 56 states have internal predecessors, (66), 16 states have call successors, (16), 8 states have call predecessors, (16), 8 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-16 20:16:32,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 97 transitions. [2021-11-16 20:16:32,999 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 97 transitions. Word has length 68 [2021-11-16 20:16:33,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:16:33,000 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 97 transitions. [2021-11-16 20:16:33,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 8 states have internal predecessors, (35), 5 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-16 20:16:33,000 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 97 transitions. [2021-11-16 20:16:33,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-16 20:16:33,002 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:16:33,002 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-16 20:16:33,021 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-16 20:16:33,215 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 [2021-11-16 20:16:33,217 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:16:33,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:16:33,218 INFO L85 PathProgramCache]: Analyzing trace with hash -611920677, now seen corresponding path program 1 times [2021-11-16 20:16:33,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:16:33,218 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859498241] [2021-11-16 20:16:33,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:16:33,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:16:33,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:33,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 20:16:33,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:33,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-16 20:16:33,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:33,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:16:33,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:33,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-16 20:16:33,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:33,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-16 20:16:33,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:33,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-16 20:16:33,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:33,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:16:33,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:33,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-16 20:16:33,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:33,569 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-16 20:16:33,569 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:16:33,569 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859498241] [2021-11-16 20:16:33,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859498241] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-16 20:16:33,570 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900225514] [2021-11-16 20:16:33,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:16:33,570 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:16:33,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 20:16:33,571 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) [2021-11-16 20:16:33,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-16 20:16:33,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:33,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 2425 conjuncts, 45 conjunts are in the unsatisfiable core [2021-11-16 20:16:33,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 20:16:33,989 INFO L388 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 16 treesize of output 12 [2021-11-16 20:16:34,374 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-16 20:16:34,375 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-16 20:16:34,749 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 34 [2021-11-16 20:16:34,848 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-16 20:16:34,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1900225514] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-16 20:16:34,849 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-16 20:16:34,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [12, 14] total 26 [2021-11-16 20:16:34,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036087831] [2021-11-16 20:16:34,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 20:16:34,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-16 20:16:34,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:16:34,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-16 20:16:34,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=574, Unknown=0, NotChecked=0, Total=650 [2021-11-16 20:16:34,850 INFO L87 Difference]: Start difference. First operand 80 states and 97 transitions. Second operand has 13 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 6 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2021-11-16 20:16:36,879 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 20:16:38,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:16:38,767 INFO L93 Difference]: Finished difference Result 152 states and 188 transitions. [2021-11-16 20:16:38,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-16 20:16:38,767 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 6 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) Word has length 68 [2021-11-16 20:16:38,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:16:38,768 INFO L225 Difference]: With dead ends: 152 [2021-11-16 20:16:38,768 INFO L226 Difference]: Without dead ends: 80 [2021-11-16 20:16:38,769 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 134 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=124, Invalid=932, Unknown=0, NotChecked=0, Total=1056 [2021-11-16 20:16:38,770 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 136 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 644 mSolverCounterSat, 35 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 644 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-11-16 20:16:38,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 279 Invalid, 680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 644 Invalid, 1 Unknown, 0 Unchecked, 3.8s Time] [2021-11-16 20:16:38,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-11-16 20:16:38,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2021-11-16 20:16:38,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 55 states have (on average 1.1818181818181819) internal successors, (65), 56 states have internal predecessors, (65), 16 states have call successors, (16), 8 states have call predecessors, (16), 8 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-16 20:16:38,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 96 transitions. [2021-11-16 20:16:38,776 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 96 transitions. Word has length 68 [2021-11-16 20:16:38,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:16:38,776 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 96 transitions. [2021-11-16 20:16:38,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 6 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2021-11-16 20:16:38,776 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 96 transitions. [2021-11-16 20:16:38,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-16 20:16:38,777 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:16:38,777 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-16 20:16:38,796 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-16 20:16:38,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:16:38,991 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:16:38,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:16:38,991 INFO L85 PathProgramCache]: Analyzing trace with hash 707152747, now seen corresponding path program 1 times [2021-11-16 20:16:38,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:16:38,992 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642683008] [2021-11-16 20:16:38,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:16:38,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:16:39,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:39,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 20:16:39,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:39,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-16 20:16:39,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:39,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:16:39,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:39,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-16 20:16:39,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:39,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-16 20:16:39,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:39,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-16 20:16:39,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:39,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:16:39,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:39,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-16 20:16:39,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:39,238 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-16 20:16:39,238 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:16:39,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642683008] [2021-11-16 20:16:39,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642683008] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-16 20:16:39,239 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691616787] [2021-11-16 20:16:39,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:16:39,239 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:16:39,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 20:16:39,240 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) [2021-11-16 20:16:39,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-16 20:16:39,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:39,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 2449 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-16 20:16:39,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 20:16:39,738 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-16 20:16:39,738 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-16 20:16:39,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [691616787] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 20:16:39,739 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-16 20:16:39,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2021-11-16 20:16:39,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511011040] [2021-11-16 20:16:39,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 20:16:39,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-16 20:16:39,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:16:39,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-16 20:16:39,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2021-11-16 20:16:39,740 INFO L87 Difference]: Start difference. First operand 80 states and 96 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-16 20:16:40,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:16:40,248 INFO L93 Difference]: Finished difference Result 152 states and 189 transitions. [2021-11-16 20:16:40,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-16 20:16:40,249 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 76 [2021-11-16 20:16:40,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:16:40,249 INFO L225 Difference]: With dead ends: 152 [2021-11-16 20:16:40,249 INFO L226 Difference]: Without dead ends: 94 [2021-11-16 20:16:40,250 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2021-11-16 20:16:40,251 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 38 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 22 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-16 20:16:40,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 327 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 22 Unchecked, 0.5s Time] [2021-11-16 20:16:40,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-11-16 20:16:40,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 85. [2021-11-16 20:16:40,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 60 states have (on average 1.1833333333333333) internal successors, (71), 61 states have internal predecessors, (71), 16 states have call successors, (16), 8 states have call predecessors, (16), 8 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-16 20:16:40,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 102 transitions. [2021-11-16 20:16:40,257 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 102 transitions. Word has length 76 [2021-11-16 20:16:40,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:16:40,257 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 102 transitions. [2021-11-16 20:16:40,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-16 20:16:40,257 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 102 transitions. [2021-11-16 20:16:40,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-16 20:16:40,258 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:16:40,258 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-16 20:16:40,287 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-16 20:16:40,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:16:40,459 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:16:40,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:16:40,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1782666009, now seen corresponding path program 1 times [2021-11-16 20:16:40,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:16:40,459 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298267101] [2021-11-16 20:16:40,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:16:40,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:16:40,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:40,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 20:16:40,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:40,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-16 20:16:40,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:40,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:16:40,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:40,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-16 20:16:40,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:40,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-16 20:16:40,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:40,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-16 20:16:40,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:40,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:16:40,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:40,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-16 20:16:40,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:40,709 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-16 20:16:40,709 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:16:40,710 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298267101] [2021-11-16 20:16:40,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298267101] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-16 20:16:40,710 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066351838] [2021-11-16 20:16:40,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:16:40,710 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:16:40,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 20:16:40,711 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) [2021-11-16 20:16:40,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-16 20:16:41,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:41,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 2439 conjuncts, 51 conjunts are in the unsatisfiable core [2021-11-16 20:16:41,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 20:16:41,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:16:41,229 INFO L388 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 31 treesize of output 15 [2021-11-16 20:16:41,761 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-16 20:16:41,761 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-16 20:16:41,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066351838] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 20:16:41,762 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-16 20:16:41,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [11] total 26 [2021-11-16 20:16:41,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353359328] [2021-11-16 20:16:41,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 20:16:41,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-16 20:16:41,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:16:41,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-16 20:16:41,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=580, Unknown=0, NotChecked=0, Total=650 [2021-11-16 20:16:41,765 INFO L87 Difference]: Start difference. First operand 85 states and 102 transitions. Second operand has 19 states, 16 states have (on average 3.5) internal successors, (56), 16 states have internal predecessors, (56), 6 states have call successors, (9), 3 states have call predecessors, (9), 5 states have return successors, (8), 5 states have call predecessors, (8), 6 states have call successors, (8) [2021-11-16 20:16:43,473 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 20:16:43,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:16:43,645 INFO L93 Difference]: Finished difference Result 163 states and 197 transitions. [2021-11-16 20:16:43,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-16 20:16:43,645 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 3.5) internal successors, (56), 16 states have internal predecessors, (56), 6 states have call successors, (9), 3 states have call predecessors, (9), 5 states have return successors, (8), 5 states have call predecessors, (8), 6 states have call successors, (8) Word has length 76 [2021-11-16 20:16:43,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:16:43,646 INFO L225 Difference]: With dead ends: 163 [2021-11-16 20:16:43,646 INFO L226 Difference]: Without dead ends: 95 [2021-11-16 20:16:43,647 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=86, Invalid=726, Unknown=0, NotChecked=0, Total=812 [2021-11-16 20:16:43,647 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 19 mSDsluCounter, 676 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 54 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-16 20:16:43,648 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 752 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 94 Invalid, 0 Unknown, 54 Unchecked, 1.8s Time] [2021-11-16 20:16:43,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-11-16 20:16:43,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2021-11-16 20:16:43,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 70 states have (on average 1.1857142857142857) internal successors, (83), 70 states have internal predecessors, (83), 16 states have call successors, (16), 9 states have call predecessors, (16), 8 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-16 20:16:43,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 114 transitions. [2021-11-16 20:16:43,653 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 114 transitions. Word has length 76 [2021-11-16 20:16:43,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:16:43,654 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 114 transitions. [2021-11-16 20:16:43,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 3.5) internal successors, (56), 16 states have internal predecessors, (56), 6 states have call successors, (9), 3 states have call predecessors, (9), 5 states have return successors, (8), 5 states have call predecessors, (8), 6 states have call successors, (8) [2021-11-16 20:16:43,654 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 114 transitions. [2021-11-16 20:16:43,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-16 20:16:43,655 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:16:43,655 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-16 20:16:43,676 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-16 20:16:43,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:16:43,871 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:16:43,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:16:43,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1017039915, now seen corresponding path program 1 times [2021-11-16 20:16:43,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:16:43,872 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220868039] [2021-11-16 20:16:43,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:16:43,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:16:43,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:43,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 20:16:43,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:43,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-16 20:16:43,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:43,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:16:43,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:43,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-16 20:16:43,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:43,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-16 20:16:43,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:44,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-16 20:16:44,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:44,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:16:44,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:44,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-16 20:16:44,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:44,027 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-16 20:16:44,027 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:16:44,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220868039] [2021-11-16 20:16:44,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220868039] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-16 20:16:44,028 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812009031] [2021-11-16 20:16:44,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:16:44,028 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:16:44,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 20:16:44,029 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) [2021-11-16 20:16:44,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-16 20:16:44,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:44,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 2441 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-16 20:16:44,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 20:16:44,414 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-16 20:16:44,415 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-16 20:16:44,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [812009031] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 20:16:44,415 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-16 20:16:44,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2021-11-16 20:16:44,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051373434] [2021-11-16 20:16:44,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 20:16:44,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-16 20:16:44,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:16:44,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-16 20:16:44,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-16 20:16:44,416 INFO L87 Difference]: Start difference. First operand 95 states and 114 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-16 20:16:44,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:16:44,434 INFO L93 Difference]: Finished difference Result 180 states and 220 transitions. [2021-11-16 20:16:44,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-16 20:16:44,434 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 76 [2021-11-16 20:16:44,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:16:44,435 INFO L225 Difference]: With dead ends: 180 [2021-11-16 20:16:44,435 INFO L226 Difference]: Without dead ends: 117 [2021-11-16 20:16:44,435 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-16 20:16:44,436 INFO L933 BasicCegarLoop]: 109 mSDtfsCounter, 29 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 297 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 [2021-11-16 20:16:44,436 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 297 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-16 20:16:44,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-11-16 20:16:44,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 95. [2021-11-16 20:16:44,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 70 states have (on average 1.1714285714285715) internal successors, (82), 70 states have internal predecessors, (82), 16 states have call successors, (16), 9 states have call predecessors, (16), 8 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-16 20:16:44,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 113 transitions. [2021-11-16 20:16:44,442 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 113 transitions. Word has length 76 [2021-11-16 20:16:44,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:16:44,442 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 113 transitions. [2021-11-16 20:16:44,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-16 20:16:44,442 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 113 transitions. [2021-11-16 20:16:44,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-16 20:16:44,443 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:16:44,443 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 20:16:44,463 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-11-16 20:16:44,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:16:44,659 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:16:44,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:16:44,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1011546195, now seen corresponding path program 1 times [2021-11-16 20:16:44,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:16:44,660 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796757075] [2021-11-16 20:16:44,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:16:44,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:16:44,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:44,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 20:16:44,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:44,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-16 20:16:44,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:44,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:16:44,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:44,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-16 20:16:44,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:44,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-16 20:16:44,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:44,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-16 20:16:44,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:44,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:16:44,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:45,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-16 20:16:45,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:45,053 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-16 20:16:45,053 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:16:45,053 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796757075] [2021-11-16 20:16:45,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796757075] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-16 20:16:45,054 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792172532] [2021-11-16 20:16:45,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:16:45,054 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:16:45,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 20:16:45,055 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) [2021-11-16 20:16:45,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-16 20:16:45,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:45,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 2436 conjuncts, 40 conjunts are in the unsatisfiable core [2021-11-16 20:16:45,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 20:16:45,787 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-16 20:16:45,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-16 20:16:46,269 INFO L354 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2021-11-16 20:16:46,270 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 19 [2021-11-16 20:16:46,302 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-16 20:16:46,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [792172532] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-16 20:16:46,302 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-16 20:16:46,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12, 12] total 31 [2021-11-16 20:16:46,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906228058] [2021-11-16 20:16:46,302 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-16 20:16:46,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-16 20:16:46,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:16:46,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-16 20:16:46,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=852, Unknown=0, NotChecked=0, Total=930 [2021-11-16 20:16:46,304 INFO L87 Difference]: Start difference. First operand 95 states and 113 transitions. Second operand has 31 states, 28 states have (on average 3.7142857142857144) internal successors, (104), 26 states have internal predecessors, (104), 10 states have call successors, (20), 7 states have call predecessors, (20), 9 states have return successors, (19), 8 states have call predecessors, (19), 9 states have call successors, (19) [2021-11-16 20:16:50,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:16:50,906 INFO L93 Difference]: Finished difference Result 190 states and 239 transitions. [2021-11-16 20:16:50,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-11-16 20:16:50,906 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 28 states have (on average 3.7142857142857144) internal successors, (104), 26 states have internal predecessors, (104), 10 states have call successors, (20), 7 states have call predecessors, (20), 9 states have return successors, (19), 8 states have call predecessors, (19), 9 states have call successors, (19) Word has length 76 [2021-11-16 20:16:50,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:16:50,907 INFO L225 Difference]: With dead ends: 190 [2021-11-16 20:16:50,907 INFO L226 Difference]: Without dead ends: 148 [2021-11-16 20:16:50,908 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 159 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 556 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=544, Invalid=3362, Unknown=0, NotChecked=0, Total=3906 [2021-11-16 20:16:50,909 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 395 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 1858 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 2179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 1858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 156 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-11-16 20:16:50,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [407 Valid, 522 Invalid, 2179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 1858 Invalid, 0 Unknown, 156 Unchecked, 3.4s Time] [2021-11-16 20:16:50,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-11-16 20:16:50,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 116. [2021-11-16 20:16:50,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 83 states have (on average 1.1566265060240963) internal successors, (96), 86 states have internal predecessors, (96), 20 states have call successors, (20), 9 states have call predecessors, (20), 12 states have return successors, (23), 20 states have call predecessors, (23), 19 states have call successors, (23) [2021-11-16 20:16:50,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 139 transitions. [2021-11-16 20:16:50,917 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 139 transitions. Word has length 76 [2021-11-16 20:16:50,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:16:50,918 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 139 transitions. [2021-11-16 20:16:50,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 28 states have (on average 3.7142857142857144) internal successors, (104), 26 states have internal predecessors, (104), 10 states have call successors, (20), 7 states have call predecessors, (20), 9 states have return successors, (19), 8 states have call predecessors, (19), 9 states have call successors, (19) [2021-11-16 20:16:50,918 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 139 transitions. [2021-11-16 20:16:50,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-16 20:16:50,919 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:16:50,919 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-16 20:16:50,940 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-16 20:16:51,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-11-16 20:16:51,139 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:16:51,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:16:51,139 INFO L85 PathProgramCache]: Analyzing trace with hash 510302001, now seen corresponding path program 1 times [2021-11-16 20:16:51,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:16:51,139 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343507627] [2021-11-16 20:16:51,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:16:51,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:16:51,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:51,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 20:16:51,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:51,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-16 20:16:51,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:51,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:16:51,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:51,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-16 20:16:51,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:51,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-16 20:16:51,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:51,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-16 20:16:51,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:51,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:16:51,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:51,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-16 20:16:51,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:51,290 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-16 20:16:51,290 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:16:51,290 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343507627] [2021-11-16 20:16:51,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343507627] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 20:16:51,290 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 20:16:51,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-16 20:16:51,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081143121] [2021-11-16 20:16:51,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 20:16:51,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-16 20:16:51,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:16:51,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-16 20:16:51,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-16 20:16:51,292 INFO L87 Difference]: Start difference. First operand 116 states and 139 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-16 20:16:53,329 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 20:16:54,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:16:54,156 INFO L93 Difference]: Finished difference Result 201 states and 240 transitions. [2021-11-16 20:16:54,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-16 20:16:54,157 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 80 [2021-11-16 20:16:54,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:16:54,157 INFO L225 Difference]: With dead ends: 201 [2021-11-16 20:16:54,157 INFO L226 Difference]: Without dead ends: 100 [2021-11-16 20:16:54,158 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-16 20:16:54,158 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 107 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 45 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-11-16 20:16:54,159 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 182 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 175 Invalid, 1 Unknown, 0 Unchecked, 2.8s Time] [2021-11-16 20:16:54,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-11-16 20:16:54,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 91. [2021-11-16 20:16:54,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 64 states have (on average 1.125) internal successors, (72), 66 states have internal predecessors, (72), 16 states have call successors, (16), 9 states have call predecessors, (16), 10 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) [2021-11-16 20:16:54,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 104 transitions. [2021-11-16 20:16:54,169 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 104 transitions. Word has length 80 [2021-11-16 20:16:54,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:16:54,169 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 104 transitions. [2021-11-16 20:16:54,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-16 20:16:54,169 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 104 transitions. [2021-11-16 20:16:54,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-16 20:16:54,170 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:16:54,170 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-16 20:16:54,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-16 20:16:54,171 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:16:54,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:16:54,171 INFO L85 PathProgramCache]: Analyzing trace with hash -862998920, now seen corresponding path program 1 times [2021-11-16 20:16:54,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:16:54,171 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144993802] [2021-11-16 20:16:54,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:16:54,171 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:16:54,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:54,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 20:16:54,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:54,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-16 20:16:54,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:54,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:16:54,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:54,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-16 20:16:54,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:54,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-16 20:16:54,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:54,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-16 20:16:54,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:54,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:16:54,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:54,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-16 20:16:54,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:54,378 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-16 20:16:54,379 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:16:54,379 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144993802] [2021-11-16 20:16:54,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144993802] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-16 20:16:54,379 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255733784] [2021-11-16 20:16:54,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:16:54,379 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:16:54,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 20:16:54,380 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) [2021-11-16 20:16:54,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-16 20:16:54,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:54,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 2438 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-16 20:16:54,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 20:16:54,859 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-16 20:16:54,860 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-16 20:16:54,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255733784] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 20:16:54,860 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-16 20:16:54,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 12 [2021-11-16 20:16:54,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764071280] [2021-11-16 20:16:54,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 20:16:54,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-16 20:16:54,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:16:54,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-16 20:16:54,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2021-11-16 20:16:54,862 INFO L87 Difference]: Start difference. First operand 91 states and 104 transitions. Second operand has 9 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-16 20:16:54,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:16:54,954 INFO L93 Difference]: Finished difference Result 156 states and 179 transitions. [2021-11-16 20:16:54,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-16 20:16:54,957 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 78 [2021-11-16 20:16:54,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:16:54,957 INFO L225 Difference]: With dead ends: 156 [2021-11-16 20:16:54,957 INFO L226 Difference]: Without dead ends: 84 [2021-11-16 20:16:54,958 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2021-11-16 20:16:54,958 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 12 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-16 20:16:54,958 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 641 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-16 20:16:54,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-11-16 20:16:54,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2021-11-16 20:16:54,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 58 states have (on average 1.103448275862069) internal successors, (64), 59 states have internal predecessors, (64), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-16 20:16:54,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 95 transitions. [2021-11-16 20:16:54,964 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 95 transitions. Word has length 78 [2021-11-16 20:16:54,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:16:54,965 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 95 transitions. [2021-11-16 20:16:54,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-16 20:16:54,965 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 95 transitions. [2021-11-16 20:16:54,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-16 20:16:54,966 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:16:54,966 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-16 20:16:54,995 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-16 20:16:55,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:16:55,179 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:16:55,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:16:55,180 INFO L85 PathProgramCache]: Analyzing trace with hash -649539011, now seen corresponding path program 1 times [2021-11-16 20:16:55,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:16:55,180 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585516001] [2021-11-16 20:16:55,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:16:55,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:16:55,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:55,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 20:16:55,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:55,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-16 20:16:55,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:55,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:16:55,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:55,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-16 20:16:55,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:55,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-16 20:16:55,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:55,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-16 20:16:55,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:55,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:16:55,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:55,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-16 20:16:55,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:55,536 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-16 20:16:55,536 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:16:55,536 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585516001] [2021-11-16 20:16:55,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585516001] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 20:16:55,537 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 20:16:55,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-16 20:16:55,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692687766] [2021-11-16 20:16:55,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 20:16:55,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-16 20:16:55,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:16:55,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-16 20:16:55,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-11-16 20:16:55,538 INFO L87 Difference]: Start difference. First operand 84 states and 95 transitions. Second operand has 11 states, 10 states have (on average 4.1) internal successors, (41), 7 states have internal predecessors, (41), 4 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-16 20:16:56,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:16:56,760 INFO L93 Difference]: Finished difference Result 96 states and 106 transitions. [2021-11-16 20:16:56,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-16 20:16:56,760 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.1) internal successors, (41), 7 states have internal predecessors, (41), 4 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 80 [2021-11-16 20:16:56,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:16:56,761 INFO L225 Difference]: With dead ends: 96 [2021-11-16 20:16:56,761 INFO L226 Difference]: Without dead ends: 94 [2021-11-16 20:16:56,761 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2021-11-16 20:16:56,761 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 110 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-16 20:16:56,762 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 251 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 440 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-16 20:16:56,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-11-16 20:16:56,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 88. [2021-11-16 20:16:56,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 61 states have (on average 1.098360655737705) internal successors, (67), 62 states have internal predecessors, (67), 16 states have call successors, (16), 10 states have call predecessors, (16), 10 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-16 20:16:56,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 98 transitions. [2021-11-16 20:16:56,766 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 98 transitions. Word has length 80 [2021-11-16 20:16:56,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:16:56,766 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 98 transitions. [2021-11-16 20:16:56,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.1) internal successors, (41), 7 states have internal predecessors, (41), 4 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-16 20:16:56,766 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 98 transitions. [2021-11-16 20:16:56,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-16 20:16:56,766 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:16:56,767 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 20:16:56,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-16 20:16:56,767 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:16:56,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:16:56,770 INFO L85 PathProgramCache]: Analyzing trace with hash -19715100, now seen corresponding path program 1 times [2021-11-16 20:16:56,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:16:56,770 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407433288] [2021-11-16 20:16:56,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:16:56,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:16:56,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:56,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 20:16:56,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:56,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-16 20:16:56,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:56,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:16:56,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:57,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-16 20:16:57,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:57,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-16 20:16:57,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:57,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-16 20:16:57,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:57,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:16:57,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:57,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-16 20:16:57,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:57,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-16 20:16:57,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:57,087 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-16 20:16:57,087 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:16:57,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407433288] [2021-11-16 20:16:57,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407433288] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 20:16:57,087 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 20:16:57,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-16 20:16:57,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722547725] [2021-11-16 20:16:57,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 20:16:57,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-16 20:16:57,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:16:57,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-16 20:16:57,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-11-16 20:16:57,089 INFO L87 Difference]: Start difference. First operand 88 states and 98 transitions. Second operand has 11 states, 10 states have (on average 4.5) internal successors, (45), 8 states have internal predecessors, (45), 5 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2021-11-16 20:16:59,225 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 20:17:01,278 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 20:17:01,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:17:01,727 INFO L93 Difference]: Finished difference Result 100 states and 109 transitions. [2021-11-16 20:17:01,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-16 20:17:01,727 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.5) internal successors, (45), 8 states have internal predecessors, (45), 5 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 86 [2021-11-16 20:17:01,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:17:01,728 INFO L225 Difference]: With dead ends: 100 [2021-11-16 20:17:01,728 INFO L226 Difference]: Without dead ends: 98 [2021-11-16 20:17:01,728 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2021-11-16 20:17:01,729 INFO L933 BasicCegarLoop]: 69 mSDtfsCounter, 101 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 49 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2021-11-16 20:17:01,729 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 263 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 517 Invalid, 2 Unknown, 0 Unchecked, 4.5s Time] [2021-11-16 20:17:01,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-11-16 20:17:01,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 92. [2021-11-16 20:17:01,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 64 states have (on average 1.09375) internal successors, (70), 65 states have internal predecessors, (70), 16 states have call successors, (16), 11 states have call predecessors, (16), 11 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-16 20:17:01,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 101 transitions. [2021-11-16 20:17:01,733 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 101 transitions. Word has length 86 [2021-11-16 20:17:01,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:17:01,734 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 101 transitions. [2021-11-16 20:17:01,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.5) internal successors, (45), 8 states have internal predecessors, (45), 5 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2021-11-16 20:17:01,734 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 101 transitions. [2021-11-16 20:17:01,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-16 20:17:01,734 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:17:01,735 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 20:17:01,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-16 20:17:01,735 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:17:01,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:17:01,735 INFO L85 PathProgramCache]: Analyzing trace with hash -449956535, now seen corresponding path program 1 times [2021-11-16 20:17:01,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:17:01,736 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868921458] [2021-11-16 20:17:01,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:17:01,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:17:01,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:17:01,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 20:17:01,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:17:01,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-16 20:17:01,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:17:01,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:17:01,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:17:01,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-16 20:17:01,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:17:01,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-16 20:17:01,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:17:01,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-16 20:17:01,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:17:01,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:17:01,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:17:01,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-16 20:17:01,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:17:01,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-16 20:17:01,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:17:01,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-16 20:17:01,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:17:01,948 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-16 20:17:01,949 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:17:01,949 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868921458] [2021-11-16 20:17:01,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868921458] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 20:17:01,949 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 20:17:01,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-16 20:17:01,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477492536] [2021-11-16 20:17:01,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 20:17:01,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-16 20:17:01,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:17:01,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-16 20:17:01,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-16 20:17:01,950 INFO L87 Difference]: Start difference. First operand 92 states and 101 transitions. Second operand has 10 states, 9 states have (on average 5.111111111111111) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-16 20:17:02,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:17:02,814 INFO L93 Difference]: Finished difference Result 104 states and 112 transitions. [2021-11-16 20:17:02,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-16 20:17:02,816 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.111111111111111) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 92 [2021-11-16 20:17:02,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:17:02,817 INFO L225 Difference]: With dead ends: 104 [2021-11-16 20:17:02,817 INFO L226 Difference]: Without dead ends: 100 [2021-11-16 20:17:02,818 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2021-11-16 20:17:02,818 INFO L933 BasicCegarLoop]: 69 mSDtfsCounter, 97 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-16 20:17:02,818 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 243 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 463 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-16 20:17:02,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-11-16 20:17:02,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 94. [2021-11-16 20:17:02,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 66 states have (on average 1.0757575757575757) internal successors, (71), 66 states have internal predecessors, (71), 16 states have call successors, (16), 12 states have call predecessors, (16), 11 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-16 20:17:02,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 102 transitions. [2021-11-16 20:17:02,822 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 102 transitions. Word has length 92 [2021-11-16 20:17:02,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:17:02,823 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 102 transitions. [2021-11-16 20:17:02,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.111111111111111) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-16 20:17:02,823 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 102 transitions. [2021-11-16 20:17:02,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-16 20:17:02,824 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:17:02,824 INFO L514 BasicCegarLoop]: trace histogram [4, 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] [2021-11-16 20:17:02,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-16 20:17:02,824 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:17:02,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:17:02,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1438296044, now seen corresponding path program 1 times [2021-11-16 20:17:02,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:17:02,825 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326373831] [2021-11-16 20:17:02,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:17:02,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:17:02,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:17:03,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 20:17:03,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:17:03,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-16 20:17:03,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:17:03,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:17:03,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:17:03,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-16 20:17:03,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:17:03,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-16 20:17:03,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:17:03,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-16 20:17:03,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:17:03,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:17:03,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:17:03,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-16 20:17:03,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:17:03,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-16 20:17:03,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:17:03,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-16 20:17:03,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:17:03,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-11-16 20:17:03,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:17:03,187 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-16 20:17:03,188 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:17:03,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326373831] [2021-11-16 20:17:03,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326373831] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 20:17:03,188 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 20:17:03,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-16 20:17:03,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500799492] [2021-11-16 20:17:03,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 20:17:03,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-16 20:17:03,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:17:03,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-16 20:17:03,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-11-16 20:17:03,189 INFO L87 Difference]: Start difference. First operand 94 states and 102 transitions. Second operand has 11 states, 10 states have (on average 4.7) internal successors, (47), 8 states have internal predecessors, (47), 5 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2021-11-16 20:17:04,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:17:04,222 INFO L93 Difference]: Finished difference Result 100 states and 108 transitions. [2021-11-16 20:17:04,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-16 20:17:04,223 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.7) internal successors, (47), 8 states have internal predecessors, (47), 5 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 98 [2021-11-16 20:17:04,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:17:04,223 INFO L225 Difference]: With dead ends: 100 [2021-11-16 20:17:04,223 INFO L226 Difference]: Without dead ends: 0 [2021-11-16 20:17:04,224 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2021-11-16 20:17:04,224 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 95 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-16 20:17:04,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 251 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-16 20:17:04,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-16 20:17:04,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-16 20:17:04,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-16 20:17:04,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-16 20:17:04,225 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 98 [2021-11-16 20:17:04,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:17:04,225 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-16 20:17:04,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.7) internal successors, (47), 8 states have internal predecessors, (47), 5 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2021-11-16 20:17:04,225 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-16 20:17:04,225 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-16 20:17:04,227 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-16 20:17:04,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-16 20:17:04,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-16 20:17:04,769 INFO L854 garLoopResultBuilder]: At program point bounded_mallocENTRY(lines 6876 6881) the Hoare annotation is: (or (not (< 0 |#StackHeapBarrier|)) (and (= |old(#length)| |#length|) (= |old(#valid)| |#valid|))) [2021-11-16 20:17:04,769 INFO L858 garLoopResultBuilder]: For program point bounded_mallocFINAL(lines 6876 6881) no Hoare annotation was computed. [2021-11-16 20:17:04,769 INFO L858 garLoopResultBuilder]: For program point L6877-1(lines 6877 6879) no Hoare annotation was computed. [2021-11-16 20:17:04,769 INFO L854 garLoopResultBuilder]: At program point L6877(lines 6877 6879) the Hoare annotation is: (or (not (< 0 |#StackHeapBarrier|)) (and (= |bounded_malloc_#in~size| bounded_malloc_~size) (= |old(#length)| |#length|) (= |old(#valid)| |#valid|))) [2021-11-16 20:17:04,769 INFO L858 garLoopResultBuilder]: For program point bounded_mallocEXIT(lines 6876 6881) no Hoare annotation was computed. [2021-11-16 20:17:04,769 INFO L861 garLoopResultBuilder]: At program point aws_byte_buf_is_validENTRY(lines 7179 7185) the Hoare annotation is: true [2021-11-16 20:17:04,769 INFO L858 garLoopResultBuilder]: For program point L7181-3(line 7181) no Hoare annotation was computed. [2021-11-16 20:17:04,769 INFO L858 garLoopResultBuilder]: For program point L7181-1(line 7181) no Hoare annotation was computed. [2021-11-16 20:17:04,769 INFO L858 garLoopResultBuilder]: For program point L7181(lines 7181 7184) no Hoare annotation was computed. [2021-11-16 20:17:04,769 INFO L858 garLoopResultBuilder]: For program point L7181-7(lines 7181 7184) no Hoare annotation was computed. [2021-11-16 20:17:04,769 INFO L858 garLoopResultBuilder]: For program point L7181-6(lines 7181 7182) no Hoare annotation was computed. [2021-11-16 20:17:04,770 INFO L858 garLoopResultBuilder]: For program point L7181-4(lines 7181 7182) no Hoare annotation was computed. [2021-11-16 20:17:04,770 INFO L858 garLoopResultBuilder]: For program point L7181-11(lines 7181 7184) no Hoare annotation was computed. [2021-11-16 20:17:04,770 INFO L858 garLoopResultBuilder]: For program point L7181-9(lines 7181 7184) no Hoare annotation was computed. [2021-11-16 20:17:04,770 INFO L858 garLoopResultBuilder]: For program point aws_byte_buf_is_validFINAL(lines 7179 7185) no Hoare annotation was computed. [2021-11-16 20:17:04,770 INFO L858 garLoopResultBuilder]: For program point aws_byte_buf_is_validEXIT(lines 7179 7185) no Hoare annotation was computed. [2021-11-16 20:17:04,770 INFO L858 garLoopResultBuilder]: For program point L7184-2(line 7184) no Hoare annotation was computed. [2021-11-16 20:17:04,770 INFO L858 garLoopResultBuilder]: For program point L7184(line 7184) no Hoare annotation was computed. [2021-11-16 20:17:04,770 INFO L858 garLoopResultBuilder]: For program point L7184-6(line 7184) no Hoare annotation was computed. [2021-11-16 20:17:04,770 INFO L858 garLoopResultBuilder]: For program point L7184-4(line 7184) no Hoare annotation was computed. [2021-11-16 20:17:04,770 INFO L858 garLoopResultBuilder]: For program point L7184-3(line 7184) no Hoare annotation was computed. [2021-11-16 20:17:04,770 INFO L858 garLoopResultBuilder]: For program point L7184-8(line 7184) no Hoare annotation was computed. [2021-11-16 20:17:04,770 INFO L858 garLoopResultBuilder]: For program point nondet_boolFINAL(line 261) no Hoare annotation was computed. [2021-11-16 20:17:04,771 INFO L858 garLoopResultBuilder]: For program point nondet_boolEXIT(line 261) no Hoare annotation was computed. [2021-11-16 20:17:04,771 INFO L861 garLoopResultBuilder]: At program point nondet_boolENTRY(line 261) the Hoare annotation is: true [2021-11-16 20:17:04,771 INFO L858 garLoopResultBuilder]: For program point L7056-1(lines 7056 7058) no Hoare annotation was computed. [2021-11-16 20:17:04,771 INFO L854 garLoopResultBuilder]: At program point L7056(lines 7056 7058) the Hoare annotation is: (or (not (< 0 |#StackHeapBarrier|)) (= |old(#valid)| |#valid|)) [2021-11-16 20:17:04,771 INFO L858 garLoopResultBuilder]: For program point aws_mem_releaseEXIT(lines 7055 7068) no Hoare annotation was computed. [2021-11-16 20:17:04,771 INFO L854 garLoopResultBuilder]: At program point aws_mem_releaseENTRY(lines 7055 7068) the Hoare annotation is: (or (not (< 0 |#StackHeapBarrier|)) (= |old(#valid)| |#valid|)) [2021-11-16 20:17:04,771 INFO L858 garLoopResultBuilder]: For program point L7063(lines 7063 7067) no Hoare annotation was computed. [2021-11-16 20:17:04,771 INFO L858 garLoopResultBuilder]: For program point L7059-1(lines 7059 7061) no Hoare annotation was computed. [2021-11-16 20:17:04,771 INFO L854 garLoopResultBuilder]: At program point L7059(lines 7059 7061) the Hoare annotation is: (or (not (< 0 |#StackHeapBarrier|)) (= |old(#valid)| |#valid|)) [2021-11-16 20:17:04,772 INFO L858 garLoopResultBuilder]: For program point L7063-2(lines 7055 7068) no Hoare annotation was computed. [2021-11-16 20:17:04,772 INFO L858 garLoopResultBuilder]: For program point L211-2(lines 210 212) no Hoare annotation was computed. [2021-11-16 20:17:04,772 INFO L861 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 210 212) the Hoare annotation is: true [2021-11-16 20:17:04,772 INFO L858 garLoopResultBuilder]: For program point L211(line 211) no Hoare annotation was computed. [2021-11-16 20:17:04,772 INFO L858 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 210 212) no Hoare annotation was computed. [2021-11-16 20:17:04,772 INFO L858 garLoopResultBuilder]: For program point can_fail_allocatorFINAL(lines 6883 6885) no Hoare annotation was computed. [2021-11-16 20:17:04,772 INFO L858 garLoopResultBuilder]: For program point can_fail_allocatorEXIT(lines 6883 6885) no Hoare annotation was computed. [2021-11-16 20:17:04,772 INFO L861 garLoopResultBuilder]: At program point can_fail_allocatorENTRY(lines 6883 6885) the Hoare annotation is: true [2021-11-16 20:17:04,772 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-16 20:17:04,773 INFO L858 garLoopResultBuilder]: For program point L8770-1(lines 8770 8772) no Hoare annotation was computed. [2021-11-16 20:17:04,773 INFO L858 garLoopResultBuilder]: For program point L6613-1(line 6613) no Hoare annotation was computed. [2021-11-16 20:17:04,773 INFO L854 garLoopResultBuilder]: At program point L6613(line 6613) the Hoare annotation is: (and (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.offset| |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.offset|) (< 1 |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.base|) (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.base| |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.base|) (= |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.offset| 0) (< 0 |#StackHeapBarrier|) (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_#t~mem475#1| (select (select |#memory_int| |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.base|) (+ |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.offset| 16)))) [2021-11-16 20:17:04,773 INFO L861 garLoopResultBuilder]: At program point L8779(line 8779) the Hoare annotation is: true [2021-11-16 20:17:04,773 INFO L858 garLoopResultBuilder]: For program point L6609(lines 6609 6614) no Hoare annotation was computed. [2021-11-16 20:17:04,773 INFO L854 garLoopResultBuilder]: At program point L8773(lines 8773 8775) the Hoare annotation is: (let ((.cse1 (+ 8 |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.offset|)) (.cse3 (select |#memory_int| |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.base|)) (.cse2 (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.base|)) (.cse0 (select |#memory_$Pointer$.offset| |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.base|)) (.cse4 (+ |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.offset| 24))) (and (= 0 (select .cse0 .cse1)) (= (select .cse2 .cse1) 0) (= (select .cse3 (+ 16 |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.offset|)) 0) (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.offset| |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.offset|) (< 1 |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.base|) (= 0 |ULTIMATE.start_aws_byte_buf_clean_up_harness_#t~mem1152#1.offset|) (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.base| |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.base|) (= |ULTIMATE.start_aws_byte_buf_clean_up_harness_#t~mem1152#1.base| 0) (= (select .cse3 |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.offset|) 0) (= |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.offset| 0) (= (select .cse2 .cse4) 0) (= (select .cse0 .cse4) 0) (< 0 |#StackHeapBarrier|))) [2021-11-16 20:17:04,773 INFO L858 garLoopResultBuilder]: For program point L8773-1(lines 8773 8775) no Hoare annotation was computed. [2021-11-16 20:17:04,773 INFO L854 garLoopResultBuilder]: At program point L8777(line 8777) the Hoare annotation is: (let ((.cse1 (+ 8 |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.offset|)) (.cse3 (select |#memory_int| |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.base|)) (.cse2 (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.base|)) (.cse0 (select |#memory_$Pointer$.offset| |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.base|)) (.cse4 (+ |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.offset| 24))) (and (= 0 (select .cse0 .cse1)) (= (select .cse2 .cse1) 0) (= (select .cse3 (+ 16 |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.offset|)) 0) (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.offset| |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.offset|) (< 1 |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.base|) (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.base| |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.base|) (= (select .cse3 |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.offset|) 0) (= |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.offset| 0) (= (select .cse2 .cse4) 0) (= (* 18446744073709551616 (div |ULTIMATE.start_aws_byte_buf_clean_up_harness_#t~mem1154#1| 18446744073709551616)) |ULTIMATE.start_aws_byte_buf_clean_up_harness_#t~mem1154#1|) (= (select .cse0 .cse4) 0) (< 0 |#StackHeapBarrier|))) [2021-11-16 20:17:04,774 INFO L858 garLoopResultBuilder]: For program point L8777-1(line 8777) no Hoare annotation was computed. [2021-11-16 20:17:04,774 INFO L858 garLoopResultBuilder]: For program point L8767-2(line 8767) no Hoare annotation was computed. [2021-11-16 20:17:04,774 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-16 20:17:04,774 INFO L858 garLoopResultBuilder]: For program point L8763(lines 8763 8778) no Hoare annotation was computed. [2021-11-16 20:17:04,774 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-16 20:17:04,774 INFO L854 garLoopResultBuilder]: At program point L8769(line 8769) the Hoare annotation is: (and (not (= (mod (select (select |#memory_int| |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.base|) (+ 16 |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.offset|)) 18446744073709551616) 0)) (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.offset| |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.offset|) (< 1 |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.base|) (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.base| |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.base|) (not (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.base|) (+ 8 |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.offset|)) 0)) (= |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.offset| 0) (< 0 |#StackHeapBarrier|)) [2021-11-16 20:17:04,774 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-16 20:17:04,774 INFO L858 garLoopResultBuilder]: For program point L8769-1(line 8769) no Hoare annotation was computed. [2021-11-16 20:17:04,774 INFO L854 garLoopResultBuilder]: At program point L8767(line 8767) the Hoare annotation is: (and (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.offset| |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.offset|) (< 1 |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.base|) (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.base| |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.base|) (not (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.base|) (+ 8 |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.offset|)) 0)) (= |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.offset| 0) (< 0 |#StackHeapBarrier|) (<= (mod (select (select |#memory_int| |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.base|) (+ 16 |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.offset|)) 18446744073709551616) 36028797018963967)) [2021-11-16 20:17:04,775 INFO L854 garLoopResultBuilder]: At program point L8767-1(line 8767) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.offset| |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.offset|)) (.cse1 (< 1 |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.base|)) (.cse2 (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.base| |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.base|)) (.cse3 (not (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.base|) (+ 8 |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.offset|)) 0))) (.cse4 (< 0 |#StackHeapBarrier|))) (or (and (not (= (mod (select (select |#memory_int| |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.base|) (+ 16 |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.offset|)) 18446744073709551616) 0)) .cse0 .cse1 .cse2 .cse3 (= |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.offset| 0) .cse4) (and .cse0 .cse1 .cse2 .cse3 (<= |ULTIMATE.start_aws_byte_buf_clean_up_harness_#t~ret1150#1| 0) (<= 0 |ULTIMATE.start_aws_byte_buf_clean_up_harness_#t~ret1150#1|) .cse4))) [2021-11-16 20:17:04,775 INFO L854 garLoopResultBuilder]: At program point L6610(line 6610) the Hoare annotation is: (and (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.offset| |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.offset|) (< 1 |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.base|) (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.base| |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.base|) (= |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.offset| 0) (< 0 |#StackHeapBarrier|)) [2021-11-16 20:17:04,775 INFO L858 garLoopResultBuilder]: For program point L6612-1(line 6612) no Hoare annotation was computed. [2021-11-16 20:17:04,775 INFO L854 garLoopResultBuilder]: At program point L6612(line 6612) the Hoare annotation is: (and (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.offset| |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.offset|) (< 1 |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.base|) (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.base| |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.base|) (= |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.offset| 0) (< 0 |#StackHeapBarrier|)) [2021-11-16 20:17:04,775 INFO L858 garLoopResultBuilder]: For program point L6610-3(lines 6610 6612) no Hoare annotation was computed. [2021-11-16 20:17:04,775 INFO L858 garLoopResultBuilder]: For program point L6610-1(lines 6610 6612) no Hoare annotation was computed. [2021-11-16 20:17:04,775 INFO L854 garLoopResultBuilder]: At program point L8770(lines 8770 8772) the Hoare annotation is: (let ((.cse1 (+ 8 |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.offset|)) (.cse3 (select |#memory_int| |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.base|)) (.cse2 (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.base|)) (.cse0 (select |#memory_$Pointer$.offset| |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.base|)) (.cse4 (+ |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.offset| 24))) (and (= 0 (select .cse0 .cse1)) (= (select .cse2 .cse1) 0) (= (select .cse3 (+ 16 |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.offset|)) 0) (= |ULTIMATE.start_aws_byte_buf_clean_up_harness_#t~mem1151#1.offset| 0) (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.offset| |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.offset|) (< 1 |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.base|) (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.base| |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.base|) (= (select .cse3 |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.offset|) 0) (= |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.offset| 0) (= (select .cse2 .cse4) 0) (= |ULTIMATE.start_aws_byte_buf_clean_up_harness_#t~mem1151#1.base| 0) (= (select .cse0 .cse4) 0) (< 0 |#StackHeapBarrier|))) [2021-11-16 20:17:04,775 INFO L854 garLoopResultBuilder]: At program point L8776(line 8776) the Hoare annotation is: (let ((.cse1 (+ 8 |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.offset|)) (.cse3 (select |#memory_int| |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.base|)) (.cse2 (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.base|)) (.cse0 (select |#memory_$Pointer$.offset| |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.base|)) (.cse4 (+ |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.offset| 24))) (and (= |ULTIMATE.start_aws_byte_buf_clean_up_harness_#t~mem1153#1| 0) (= 0 (select .cse0 .cse1)) (= (select .cse2 .cse1) 0) (= (select .cse3 (+ 16 |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.offset|)) 0) (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.offset| |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.offset|) (< 1 |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.base|) (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.base| |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.base|) (= (select .cse3 |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.offset|) 0) (= |ULTIMATE.start_aws_byte_buf_clean_up_harness_~#buf~3#1.offset| 0) (= (select .cse2 .cse4) 0) (= (select .cse0 .cse4) 0) (< 0 |#StackHeapBarrier|))) [2021-11-16 20:17:04,776 INFO L858 garLoopResultBuilder]: For program point L8776-1(line 8776) no Hoare annotation was computed. [2021-11-16 20:17:04,776 INFO L854 garLoopResultBuilder]: At program point aws_byte_buf_clean_upENTRY(lines 7203 7216) the Hoare annotation is: (or (not (< 0 |#StackHeapBarrier|)) (and (= |old(#memory_real)| |#memory_real|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |old(#valid)| |#valid|))) [2021-11-16 20:17:04,776 INFO L858 garLoopResultBuilder]: For program point L7205-4(lines 7205 7207) no Hoare annotation was computed. [2021-11-16 20:17:04,776 INFO L858 garLoopResultBuilder]: For program point aws_byte_buf_clean_upFINAL(lines 7203 7216) no Hoare annotation was computed. [2021-11-16 20:17:04,776 INFO L854 garLoopResultBuilder]: At program point L7206(line 7206) the Hoare annotation is: (let ((.cse3 (<= |aws_byte_buf_clean_up_#in~buf.base| aws_byte_buf_clean_up_~buf.base)) (.cse0 (= |old(#memory_real)| |#memory_real|)) (.cse1 (= |#memory_int| |old(#memory_int)|)) (.cse2 (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|)) (.cse4 (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) (.cse5 (= |old(#valid)| |#valid|))) (or (not (< 0 |#StackHeapBarrier|)) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (<= |aws_byte_buf_clean_up_#in~buf.base| 0)) (and (= (select (select |old(#memory_$Pointer$.base)| |aws_byte_buf_clean_up_#in~buf.base|) (+ |aws_byte_buf_clean_up_#in~buf.offset| 8)) 0) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5) (and .cse0 .cse1 .cse2 (= |aws_byte_buf_clean_up_#in~buf.offset| aws_byte_buf_clean_up_~buf.offset) .cse4 .cse5 (= |aws_byte_buf_clean_up_#in~buf.base| aws_byte_buf_clean_up_~buf.base)))) [2021-11-16 20:17:04,776 INFO L858 garLoopResultBuilder]: For program point L7204-2(line 7204) no Hoare annotation was computed. [2021-11-16 20:17:04,776 INFO L854 garLoopResultBuilder]: At program point L7204-1(line 7204) the Hoare annotation is: (let ((.cse3 (<= |aws_byte_buf_clean_up_#in~buf.base| aws_byte_buf_clean_up_~buf.base)) (.cse0 (= |old(#memory_real)| |#memory_real|)) (.cse1 (= |#memory_int| |old(#memory_int)|)) (.cse2 (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|)) (.cse4 (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) (.cse5 (= |old(#valid)| |#valid|))) (or (not (< 0 |#StackHeapBarrier|)) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (<= |aws_byte_buf_clean_up_#in~buf.base| 0)) (and (= (select (select |old(#memory_$Pointer$.base)| |aws_byte_buf_clean_up_#in~buf.base|) (+ |aws_byte_buf_clean_up_#in~buf.offset| 8)) 0) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5) (and .cse0 .cse1 .cse2 (= |aws_byte_buf_clean_up_#in~buf.offset| aws_byte_buf_clean_up_~buf.offset) .cse4 .cse5 (= |aws_byte_buf_clean_up_#in~buf.base| aws_byte_buf_clean_up_~buf.base)))) [2021-11-16 20:17:04,776 INFO L858 garLoopResultBuilder]: For program point L7205-2(lines 7205 7207) no Hoare annotation was computed. [2021-11-16 20:17:04,777 INFO L854 garLoopResultBuilder]: At program point L7204(line 7204) the Hoare annotation is: (or (not (< 0 |#StackHeapBarrier|)) (and (= |old(#memory_real)| |#memory_real|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |aws_byte_buf_clean_up_#in~buf.offset| aws_byte_buf_clean_up_~buf.offset) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |old(#valid)| |#valid|) (= |aws_byte_buf_clean_up_#in~buf.base| aws_byte_buf_clean_up_~buf.base))) [2021-11-16 20:17:04,777 INFO L858 garLoopResultBuilder]: For program point aws_byte_buf_clean_upEXIT(lines 7203 7216) no Hoare annotation was computed. [2021-11-16 20:17:04,777 INFO L858 garLoopResultBuilder]: For program point L7205(line 7205) no Hoare annotation was computed. [2021-11-16 20:17:04,777 INFO L858 garLoopResultBuilder]: For program point L7206-1(line 7206) no Hoare annotation was computed. [2021-11-16 20:17:04,777 INFO L858 garLoopResultBuilder]: For program point L223(line 223) no Hoare annotation was computed. [2021-11-16 20:17:04,777 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 222 224) the Hoare annotation is: true [2021-11-16 20:17:04,777 INFO L858 garLoopResultBuilder]: For program point L223-1(line 223) no Hoare annotation was computed. [2021-11-16 20:17:04,777 INFO L858 garLoopResultBuilder]: For program point L223-3(lines 222 224) no Hoare annotation was computed. [2021-11-16 20:17:04,777 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 222 224) no Hoare annotation was computed. [2021-11-16 20:17:04,778 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 223) no Hoare annotation was computed. [2021-11-16 20:17:04,780 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 20:17:04,781 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-16 20:17:04,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 08:17:04 BoogieIcfgContainer [2021-11-16 20:17:04,786 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-16 20:17:04,787 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-16 20:17:04,787 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-16 20:17:04,788 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-16 20:17:04,788 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:16:22" (3/4) ... [2021-11-16 20:17:04,790 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-16 20:17:04,799 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure bounded_malloc [2021-11-16 20:17:04,799 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure aws_byte_buf_is_valid [2021-11-16 20:17:04,799 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure nondet_bool [2021-11-16 20:17:04,800 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure aws_mem_release [2021-11-16 20:17:04,800 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2021-11-16 20:17:04,800 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure aws_byte_buf_clean_up [2021-11-16 20:17:04,800 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2021-11-16 20:17:04,800 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure can_fail_allocator [2021-11-16 20:17:04,809 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 116 nodes and edges [2021-11-16 20:17:04,810 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 55 nodes and edges [2021-11-16 20:17:04,810 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 26 nodes and edges [2021-11-16 20:17:04,811 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-11-16 20:17:04,812 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-11-16 20:17:04,812 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-11-16 20:17:04,813 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-16 20:17:04,813 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-16 20:17:05,348 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-11-16 20:17:05,348 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-16 20:17:05,349 INFO L158 Benchmark]: Toolchain (without parser) took 45834.57ms. Allocated memory was 83.9MB in the beginning and 251.7MB in the end (delta: 167.8MB). Free memory was 43.9MB in the beginning and 34.2MB in the end (delta: 9.7MB). Peak memory consumption was 182.3MB. Max. memory is 16.1GB. [2021-11-16 20:17:05,349 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 83.9MB. Free memory is still 41.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-16 20:17:05,349 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1805.93ms. Allocated memory was 83.9MB in the beginning and 144.7MB in the end (delta: 60.8MB). Free memory was 43.7MB in the beginning and 88.3MB in the end (delta: -44.6MB). Peak memory consumption was 54.0MB. Max. memory is 16.1GB. [2021-11-16 20:17:05,349 INFO L158 Benchmark]: Boogie Procedure Inliner took 164.11ms. Allocated memory is still 144.7MB. Free memory was 88.3MB in the beginning and 77.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-16 20:17:05,350 INFO L158 Benchmark]: Boogie Preprocessor took 86.66ms. Allocated memory is still 144.7MB. Free memory was 77.8MB in the beginning and 71.5MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-16 20:17:05,350 INFO L158 Benchmark]: RCFGBuilder took 1192.55ms. Allocated memory is still 144.7MB. Free memory was 71.5MB in the beginning and 61.7MB in the end (delta: 9.8MB). Peak memory consumption was 28.6MB. Max. memory is 16.1GB. [2021-11-16 20:17:05,350 INFO L158 Benchmark]: TraceAbstraction took 42017.26ms. Allocated memory was 144.7MB in the beginning and 251.7MB in the end (delta: 107.0MB). Free memory was 61.7MB in the beginning and 131.2MB in the end (delta: -69.6MB). Peak memory consumption was 122.7MB. Max. memory is 16.1GB. [2021-11-16 20:17:05,350 INFO L158 Benchmark]: Witness Printer took 560.92ms. Allocated memory is still 251.7MB. Free memory was 131.2MB in the beginning and 34.2MB in the end (delta: 97.1MB). Peak memory consumption was 101.3MB. Max. memory is 16.1GB. [2021-11-16 20:17:05,351 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 83.9MB. Free memory is still 41.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1805.93ms. Allocated memory was 83.9MB in the beginning and 144.7MB in the end (delta: 60.8MB). Free memory was 43.7MB in the beginning and 88.3MB in the end (delta: -44.6MB). Peak memory consumption was 54.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 164.11ms. Allocated memory is still 144.7MB. Free memory was 88.3MB in the beginning and 77.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 86.66ms. Allocated memory is still 144.7MB. Free memory was 77.8MB in the beginning and 71.5MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 1192.55ms. Allocated memory is still 144.7MB. Free memory was 71.5MB in the beginning and 61.7MB in the end (delta: 9.8MB). Peak memory consumption was 28.6MB. Max. memory is 16.1GB. * TraceAbstraction took 42017.26ms. Allocated memory was 144.7MB in the beginning and 251.7MB in the end (delta: 107.0MB). Free memory was 61.7MB in the beginning and 131.2MB in the end (delta: -69.6MB). Peak memory consumption was 122.7MB. Max. memory is 16.1GB. * Witness Printer took 560.92ms. Allocated memory is still 251.7MB. Free memory was 131.2MB in the beginning and 34.2MB in the end (delta: 97.1MB). Peak memory consumption was 101.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 223]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 84 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 42.0s, OverallIterations: 15, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 27.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 5 mSolverCounterUnknown, 1606 SdHoareTripleChecker+Valid, 25.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1561 mSDsluCounter, 4921 SdHoareTripleChecker+Invalid, 24.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 232 IncrementalHoareTripleChecker+Unchecked, 3744 mSDsCounter, 563 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5422 IncrementalHoareTripleChecker+Invalid, 6222 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 563 mSolverCounterUnsat, 1177 mSDtfsCounter, 5422 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1320 GetRequests, 1028 SyntacticMatches, 10 SemanticMatches, 282 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1134 ImplicationChecksByTransitivity, 4.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=116occurred in iteration=9, InterpolantAutomatonStates: 173, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 15 MinimizatonAttempts, 96 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 25 LocationsWithAnnotation, 198 PreInvPairs, 257 NumberOfFragments, 753 HoareAnnotationTreeSize, 198 FomulaSimplifications, 611 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 25 FomulaSimplificationsInter, 1432 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 3.3s SatisfiabilityAnalysisTime, 7.6s InterpolantComputationTime, 1764 NumberOfCodeBlocks, 1764 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 1949 ConstructedInterpolants, 50 QuantifiedInterpolants, 6648 SizeOfPredicates, 77 NumberOfNonLiveVariables, 21867 ConjunctsInSsa, 221 ConjunctsInUnsatCore, 27 InterpolantComputations, 14 PerfectInterpolantSequences, 555/693 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 8779]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-11-16 20:17:05,382 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE