./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_array_list_copy_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_array_list_copy_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 3a98a47bac7562a35bba31573ebdfd704a9d27baca1b439deea796ac12a0961b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-16 20:00:46,309 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-16 20:00:46,310 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-16 20:00:46,360 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-16 20:00:46,360 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-16 20:00:46,364 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-16 20:00:46,364 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-16 20:00:46,368 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-16 20:00:46,370 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-16 20:00:46,372 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-16 20:00:46,373 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-16 20:00:46,374 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-16 20:00:46,375 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-16 20:00:46,378 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-16 20:00:46,380 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-16 20:00:46,381 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-16 20:00:46,383 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-16 20:00:46,384 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-16 20:00:46,385 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-16 20:00:46,387 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-16 20:00:46,390 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-16 20:00:46,390 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-16 20:00:46,391 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-16 20:00:46,392 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-16 20:00:46,393 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-16 20:00:46,395 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-16 20:00:46,395 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-16 20:00:46,395 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-16 20:00:46,396 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-16 20:00:46,397 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-16 20:00:46,397 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-16 20:00:46,398 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-16 20:00:46,399 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-16 20:00:46,399 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-16 20:00:46,400 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-16 20:00:46,400 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-16 20:00:46,401 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-16 20:00:46,401 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-16 20:00:46,401 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-16 20:00:46,402 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-16 20:00:46,402 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-16 20:00:46,403 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-16 20:00:46,425 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-16 20:00:46,428 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-16 20:00:46,428 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-16 20:00:46,428 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-16 20:00:46,429 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-16 20:00:46,429 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-16 20:00:46,430 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-16 20:00:46,430 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-16 20:00:46,430 INFO L138 SettingsManager]: * Use SBE=true [2021-11-16 20:00:46,430 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-16 20:00:46,431 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-16 20:00:46,431 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-16 20:00:46,431 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-16 20:00:46,431 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-16 20:00:46,431 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-16 20:00:46,431 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-16 20:00:46,431 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-16 20:00:46,432 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-16 20:00:46,432 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-16 20:00:46,432 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-16 20:00:46,432 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-16 20:00:46,432 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-16 20:00:46,432 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-16 20:00:46,432 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-16 20:00:46,433 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-16 20:00:46,433 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-16 20:00:46,433 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-16 20:00:46,433 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-16 20:00:46,433 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-16 20:00:46,433 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-16 20:00:46,433 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-16 20:00:46,434 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a98a47bac7562a35bba31573ebdfd704a9d27baca1b439deea796ac12a0961b [2021-11-16 20:00:46,646 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-16 20:00:46,667 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-16 20:00:46,669 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-16 20:00:46,670 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-16 20:00:46,671 INFO L275 PluginConnector]: CDTParser initialized [2021-11-16 20:00:46,671 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_array_list_copy_harness.i [2021-11-16 20:00:46,729 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0639c350/235c362043704ec7a2fedcee0ab15b18/FLAGb41bc332b [2021-11-16 20:00:47,328 INFO L306 CDTParser]: Found 1 translation units. [2021-11-16 20:00:47,329 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_copy_harness.i [2021-11-16 20:00:47,356 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0639c350/235c362043704ec7a2fedcee0ab15b18/FLAGb41bc332b [2021-11-16 20:00:47,761 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0639c350/235c362043704ec7a2fedcee0ab15b18 [2021-11-16 20:00:47,764 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-16 20:00:47,766 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-16 20:00:47,768 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-16 20:00:47,768 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-16 20:00:47,771 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-16 20:00:47,772 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:00:47" (1/1) ... [2021-11-16 20:00:47,773 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13bfde3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:00:47, skipping insertion in model container [2021-11-16 20:00:47,773 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:00:47" (1/1) ... [2021-11-16 20:00:47,778 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-16 20:00:47,847 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-16 20:00:48,077 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_array_list_copy_harness.i[4493,4506] [2021-11-16 20:00:48,083 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_array_list_copy_harness.i[4553,4566] [2021-11-16 20:00:48,099 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-16 20:00:48,103 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-16 20:00:48,568 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-16 20:00:48,603 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:00:48,604 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:00:48,604 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:00:48,605 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:00:48,605 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:00:48,613 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:00:48,613 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:00:48,614 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:00:48,615 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:00:48,616 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:00:48,616 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:00:48,617 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:00:48,617 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:00:48,773 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-16 20:00:48,774 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-16 20:00:48,775 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-16 20:00:48,776 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-16 20:00:48,777 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-16 20:00:48,777 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-16 20:00:48,778 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-16 20:00:48,779 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-16 20:00:48,779 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-16 20:00:48,779 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-16 20:00:48,849 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:00:48,849 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:00:48,853 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:00:48,857 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:00:48,906 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-16 20:00:48,935 INFO L203 MainTranslator]: Completed pre-run [2021-11-16 20:00:48,954 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_array_list_copy_harness.i[4493,4506] [2021-11-16 20:00:48,955 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_array_list_copy_harness.i[4553,4566] [2021-11-16 20:00:48,957 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-16 20:00:48,958 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-16 20:00:48,997 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-16 20:00:49,012 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:00:49,014 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:00:49,014 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:00:49,015 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:00:49,015 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:00:49,021 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:00:49,022 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:00:49,023 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:00:49,024 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:00:49,029 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:00:49,030 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:00:49,030 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:00:49,030 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:00:49,093 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-16 20:00:49,096 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-16 20:00:49,096 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-16 20:00:49,097 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-16 20:00:49,097 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-16 20:00:49,097 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-16 20:00:49,098 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-16 20:00:49,098 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-16 20:00:49,098 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-16 20:00:49,099 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-16 20:00:49,123 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:00:49,124 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:00:49,125 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:00:49,128 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:00:49,147 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-16 20:00:49,310 INFO L208 MainTranslator]: Completed translation [2021-11-16 20:00:49,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:00:49 WrapperNode [2021-11-16 20:00:49,311 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-16 20:00:49,312 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-16 20:00:49,312 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-16 20:00:49,312 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-16 20:00:49,317 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:00:49" (1/1) ... [2021-11-16 20:00:49,380 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:00:49" (1/1) ... [2021-11-16 20:00:49,441 INFO L137 Inliner]: procedures = 693, calls = 1675, calls flagged for inlining = 52, calls inlined = 7, statements flattened = 692 [2021-11-16 20:00:49,442 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-16 20:00:49,442 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-16 20:00:49,442 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-16 20:00:49,442 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-16 20:00:49,454 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:00:49" (1/1) ... [2021-11-16 20:00:49,455 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:00:49" (1/1) ... [2021-11-16 20:00:49,467 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:00:49" (1/1) ... [2021-11-16 20:00:49,468 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:00:49" (1/1) ... [2021-11-16 20:00:49,490 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:00:49" (1/1) ... [2021-11-16 20:00:49,493 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:00:49" (1/1) ... [2021-11-16 20:00:49,504 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:00:49" (1/1) ... [2021-11-16 20:00:49,512 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-16 20:00:49,523 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-16 20:00:49,523 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-16 20:00:49,523 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-16 20:00:49,524 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:00:49" (1/1) ... [2021-11-16 20:00:49,529 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-16 20:00:49,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 20:00:49,558 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 20:00:49,592 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 20:00:49,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-16 20:00:49,604 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2021-11-16 20:00:49,604 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2021-11-16 20:00:49,604 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2021-11-16 20:00:49,604 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2021-11-16 20:00:49,605 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-16 20:00:49,605 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-16 20:00:49,605 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2021-11-16 20:00:49,605 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2021-11-16 20:00:49,605 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-16 20:00:49,605 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-11-16 20:00:49,605 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-11-16 20:00:49,605 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-16 20:00:49,606 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-16 20:00:49,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-16 20:00:49,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-16 20:00:49,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-16 20:00:49,607 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2021-11-16 20:00:49,607 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2021-11-16 20:00:49,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-16 20:00:49,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-16 20:00:49,608 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-16 20:00:49,608 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-16 20:00:49,608 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-11-16 20:00:49,608 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-11-16 20:00:49,608 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2021-11-16 20:00:49,608 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2021-11-16 20:00:49,608 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2021-11-16 20:00:49,608 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2021-11-16 20:00:49,609 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-16 20:00:49,609 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-16 20:00:49,609 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2021-11-16 20:00:49,610 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2021-11-16 20:00:49,610 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2021-11-16 20:00:49,610 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2021-11-16 20:00:49,610 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-16 20:00:49,610 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-16 20:00:49,610 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-16 20:00:49,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-16 20:00:49,611 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-16 20:00:49,611 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-16 20:00:49,611 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-11-16 20:00:49,611 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-11-16 20:00:49,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-16 20:00:49,611 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2021-11-16 20:00:49,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2021-11-16 20:00:49,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-16 20:00:49,775 INFO L236 CfgBuilder]: Building ICFG [2021-11-16 20:00:49,776 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-16 20:00:51,642 INFO L277 CfgBuilder]: Performing block encoding [2021-11-16 20:00:51,647 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-16 20:00:51,647 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-16 20:00:51,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:00:51 BoogieIcfgContainer [2021-11-16 20:00:51,649 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-16 20:00:51,650 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-16 20:00:51,650 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-16 20:00:51,652 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-16 20:00:51,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 08:00:47" (1/3) ... [2021-11-16 20:00:51,659 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f134828 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:00:51, skipping insertion in model container [2021-11-16 20:00:51,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:00:49" (2/3) ... [2021-11-16 20:00:51,660 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f134828 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:00:51, skipping insertion in model container [2021-11-16 20:00:51,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:00:51" (3/3) ... [2021-11-16 20:00:51,661 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_list_copy_harness.i [2021-11-16 20:00:51,664 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-16 20:00:51,665 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-16 20:00:51,694 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-16 20:00:51,698 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 20:00:51,698 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-16 20:00:51,712 INFO L276 IsEmpty]: Start isEmpty. Operand has 209 states, 119 states have (on average 1.184873949579832) internal successors, (141), 120 states have internal predecessors, (141), 71 states have call successors, (71), 17 states have call predecessors, (71), 17 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2021-11-16 20:00:51,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-16 20:00:51,720 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:00:51,721 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 20:00:51,721 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:00:51,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:00:51,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1428143905, now seen corresponding path program 1 times [2021-11-16 20:00:51,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:00:51,730 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664060414] [2021-11-16 20:00:51,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:00:51,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:00:52,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:52,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 20:00:52,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:52,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 20:00:52,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:52,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-16 20:00:52,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:52,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-16 20:00:52,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:52,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-16 20:00:52,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:52,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-16 20:00:52,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:52,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-16 20:00:52,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:52,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-16 20:00:52,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:52,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-16 20:00:52,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:52,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-16 20:00:52,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:52,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-16 20:00:52,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:52,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-16 20:00:52,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:52,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-16 20:00:52,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:52,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-16 20:00:52,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:52,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-16 20:00:52,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:52,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-11-16 20:00:52,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:52,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-11-16 20:00:52,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:52,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-16 20:00:52,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:52,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-16 20:00:52,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:52,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-11-16 20:00:52,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:52,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-11-16 20:00:52,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:52,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-11-16 20:00:52,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:52,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-11-16 20:00:52,493 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:00:52,493 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664060414] [2021-11-16 20:00:52,493 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-11-16 20:00:52,493 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141753003] [2021-11-16 20:00:52,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:00:52,494 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:00:52,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 20:00:52,506 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 20:00:52,552 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 20:00:52,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:52,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 2291 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-16 20:00:52,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 20:00:53,228 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2021-11-16 20:00:53,228 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-16 20:00:53,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2141753003] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 20:00:53,229 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 20:00:53,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-16 20:00:53,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332111091] [2021-11-16 20:00:53,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 20:00:53,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-16 20:00:53,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:00:53,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-16 20:00:53,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-16 20:00:53,258 INFO L87 Difference]: Start difference. First operand has 209 states, 119 states have (on average 1.184873949579832) internal successors, (141), 120 states have internal predecessors, (141), 71 states have call successors, (71), 17 states have call predecessors, (71), 17 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-11-16 20:00:53,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:00:53,634 INFO L93 Difference]: Finished difference Result 416 states and 618 transitions. [2021-11-16 20:00:53,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-16 20:00:53,637 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 145 [2021-11-16 20:00:53,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:00:53,649 INFO L225 Difference]: With dead ends: 416 [2021-11-16 20:00:53,650 INFO L226 Difference]: Without dead ends: 206 [2021-11-16 20:00:53,656 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-11-16 20:00:53,658 INFO L933 BasicCegarLoop]: 215 mSDtfsCounter, 276 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 786 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-16 20:00:53,661 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [276 Valid, 786 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-16 20:00:53,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-11-16 20:00:53,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2021-11-16 20:00:53,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 116 states have (on average 1.1724137931034482) internal successors, (136), 118 states have internal predecessors, (136), 71 states have call successors, (71), 17 states have call predecessors, (71), 18 states have return successors, (82), 70 states have call predecessors, (82), 70 states have call successors, (82) [2021-11-16 20:00:53,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 289 transitions. [2021-11-16 20:00:53,731 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 289 transitions. Word has length 145 [2021-11-16 20:00:53,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:00:53,732 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 289 transitions. [2021-11-16 20:00:53,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-11-16 20:00:53,732 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 289 transitions. [2021-11-16 20:00:53,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-11-16 20:00:53,743 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:00:53,743 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 20:00:53,765 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 20:00:53,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-11-16 20:00:53,959 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:00:53,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:00:53,960 INFO L85 PathProgramCache]: Analyzing trace with hash 484121766, now seen corresponding path program 1 times [2021-11-16 20:00:53,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:00:53,960 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156405299] [2021-11-16 20:00:53,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:00:53,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:00:54,038 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-16 20:00:54,059 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [404236248] [2021-11-16 20:00:54,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:00:54,060 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:00:54,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 20:00:54,075 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 20:00:54,077 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 20:00:54,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:54,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 2407 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-16 20:00:54,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 20:00:54,699 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2021-11-16 20:00:54,699 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-16 20:00:54,699 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:00:54,699 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156405299] [2021-11-16 20:00:54,700 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-16 20:00:54,700 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404236248] [2021-11-16 20:00:54,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [404236248] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 20:00:54,700 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 20:00:54,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-16 20:00:54,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363471728] [2021-11-16 20:00:54,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 20:00:54,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-16 20:00:54,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:00:54,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-16 20:00:54,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-16 20:00:54,702 INFO L87 Difference]: Start difference. First operand 206 states and 289 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-16 20:00:54,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:00:54,730 INFO L93 Difference]: Finished difference Result 410 states and 588 transitions. [2021-11-16 20:00:54,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-16 20:00:54,730 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 160 [2021-11-16 20:00:54,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:00:54,732 INFO L225 Difference]: With dead ends: 410 [2021-11-16 20:00:54,732 INFO L226 Difference]: Without dead ends: 211 [2021-11-16 20:00:54,733 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 157 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 20:00:54,734 INFO L933 BasicCegarLoop]: 275 mSDtfsCounter, 10 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 815 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-16 20:00:54,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 815 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-16 20:00:54,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2021-11-16 20:00:54,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 208. [2021-11-16 20:00:54,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 118 states have (on average 1.1694915254237288) internal successors, (138), 120 states have internal predecessors, (138), 71 states have call successors, (71), 17 states have call predecessors, (71), 18 states have return successors, (82), 70 states have call predecessors, (82), 70 states have call successors, (82) [2021-11-16 20:00:54,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 291 transitions. [2021-11-16 20:00:54,758 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 291 transitions. Word has length 160 [2021-11-16 20:00:54,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:00:54,758 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 291 transitions. [2021-11-16 20:00:54,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-16 20:00:54,758 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 291 transitions. [2021-11-16 20:00:54,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-11-16 20:00:54,760 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:00:54,760 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 20:00:54,799 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 20:00:54,979 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,SelfDestructingSolverStorable1 [2021-11-16 20:00:54,980 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:00:54,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:00:54,980 INFO L85 PathProgramCache]: Analyzing trace with hash -2088842844, now seen corresponding path program 1 times [2021-11-16 20:00:54,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:00:54,981 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636986503] [2021-11-16 20:00:54,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:00:54,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:00:55,011 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-16 20:00:55,012 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [143189300] [2021-11-16 20:00:55,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:00:55,012 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:00:55,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 20:00:55,014 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 20:00:55,023 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 20:00:55,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:55,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 2412 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-16 20:00:55,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 20:00:55,587 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2021-11-16 20:00:55,587 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-16 20:00:55,587 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:00:55,587 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636986503] [2021-11-16 20:00:55,587 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-16 20:00:55,588 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143189300] [2021-11-16 20:00:55,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [143189300] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 20:00:55,588 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 20:00:55,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-16 20:00:55,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610881809] [2021-11-16 20:00:55,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 20:00:55,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-16 20:00:55,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:00:55,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-16 20:00:55,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-16 20:00:55,590 INFO L87 Difference]: Start difference. First operand 208 states and 291 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-11-16 20:00:55,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:00:55,833 INFO L93 Difference]: Finished difference Result 383 states and 533 transitions. [2021-11-16 20:00:55,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-16 20:00:55,834 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 160 [2021-11-16 20:00:55,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:00:55,838 INFO L225 Difference]: With dead ends: 383 [2021-11-16 20:00:55,838 INFO L226 Difference]: Without dead ends: 208 [2021-11-16 20:00:55,839 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-16 20:00:55,841 INFO L933 BasicCegarLoop]: 213 mSDtfsCounter, 270 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 777 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-16 20:00:55,842 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [270 Valid, 777 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-16 20:00:55,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-11-16 20:00:55,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2021-11-16 20:00:55,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 118 states have (on average 1.1694915254237288) internal successors, (138), 120 states have internal predecessors, (138), 71 states have call successors, (71), 17 states have call predecessors, (71), 18 states have return successors, (80), 70 states have call predecessors, (80), 70 states have call successors, (80) [2021-11-16 20:00:55,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 289 transitions. [2021-11-16 20:00:55,879 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 289 transitions. Word has length 160 [2021-11-16 20:00:55,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:00:55,880 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 289 transitions. [2021-11-16 20:00:55,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-11-16 20:00:55,880 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 289 transitions. [2021-11-16 20:00:55,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-11-16 20:00:55,881 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:00:55,881 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 20:00:55,914 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-16 20:00:56,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:00:56,103 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:00:56,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:00:56,104 INFO L85 PathProgramCache]: Analyzing trace with hash 2066938953, now seen corresponding path program 2 times [2021-11-16 20:00:56,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:00:56,104 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199249839] [2021-11-16 20:00:56,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:00:56,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:00:56,167 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-16 20:00:56,168 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [705855651] [2021-11-16 20:00:56,168 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-16 20:00:56,168 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:00:56,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 20:00:56,171 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 20:00:56,174 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 20:00:56,455 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-16 20:00:56,455 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-16 20:00:56,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 1894 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-16 20:00:56,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 20:00:56,735 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2021-11-16 20:00:56,735 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-16 20:00:56,735 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:00:56,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199249839] [2021-11-16 20:00:56,735 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-16 20:00:56,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705855651] [2021-11-16 20:00:56,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [705855651] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 20:00:56,735 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 20:00:56,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-16 20:00:56,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834076020] [2021-11-16 20:00:56,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 20:00:56,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-16 20:00:56,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:00:56,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-16 20:00:56,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-16 20:00:56,737 INFO L87 Difference]: Start difference. First operand 208 states and 289 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-16 20:00:56,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:00:56,764 INFO L93 Difference]: Finished difference Result 269 states and 367 transitions. [2021-11-16 20:00:56,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-16 20:00:56,765 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) Word has length 175 [2021-11-16 20:00:56,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:00:56,767 INFO L225 Difference]: With dead ends: 269 [2021-11-16 20:00:56,767 INFO L226 Difference]: Without dead ends: 213 [2021-11-16 20:00:56,767 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-16 20:00:56,768 INFO L933 BasicCegarLoop]: 273 mSDtfsCounter, 2 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1087 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-16 20:00:56,768 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1087 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-16 20:00:56,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-11-16 20:00:56,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2021-11-16 20:00:56,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 122 states have (on average 1.1639344262295082) internal successors, (142), 124 states have internal predecessors, (142), 71 states have call successors, (71), 17 states have call predecessors, (71), 19 states have return successors, (82), 71 states have call predecessors, (82), 70 states have call successors, (82) [2021-11-16 20:00:56,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 295 transitions. [2021-11-16 20:00:56,785 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 295 transitions. Word has length 175 [2021-11-16 20:00:56,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:00:56,786 INFO L470 AbstractCegarLoop]: Abstraction has 213 states and 295 transitions. [2021-11-16 20:00:56,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-16 20:00:56,787 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 295 transitions. [2021-11-16 20:00:56,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-11-16 20:00:56,789 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:00:56,789 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 20:00:56,809 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-11-16 20:00:57,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:00:57,003 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:00:57,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:00:57,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1798085459, now seen corresponding path program 1 times [2021-11-16 20:00:57,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:00:57,005 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982948460] [2021-11-16 20:00:57,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:00:57,005 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:00:57,060 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-16 20:00:57,060 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1621447136] [2021-11-16 20:00:57,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:00:57,061 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:00:57,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 20:00:57,062 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 20:00:57,095 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 20:00:57,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:57,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 2549 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-16 20:00:57,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 20:00:57,765 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2021-11-16 20:00:57,766 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-16 20:00:57,766 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:00:57,766 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982948460] [2021-11-16 20:00:57,766 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-16 20:00:57,766 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621447136] [2021-11-16 20:00:57,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621447136] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 20:00:57,767 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 20:00:57,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-16 20:00:57,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380782413] [2021-11-16 20:00:57,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 20:00:57,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-16 20:00:57,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:00:57,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-16 20:00:57,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-16 20:00:57,768 INFO L87 Difference]: Start difference. First operand 213 states and 295 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2021-11-16 20:00:58,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:00:58,064 INFO L93 Difference]: Finished difference Result 382 states and 524 transitions. [2021-11-16 20:00:58,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-16 20:00:58,065 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) Word has length 181 [2021-11-16 20:00:58,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:00:58,066 INFO L225 Difference]: With dead ends: 382 [2021-11-16 20:00:58,066 INFO L226 Difference]: Without dead ends: 213 [2021-11-16 20:00:58,067 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-11-16 20:00:58,067 INFO L933 BasicCegarLoop]: 207 mSDtfsCounter, 305 mSDsluCounter, 729 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 936 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-16 20:00:58,067 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [305 Valid, 936 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-16 20:00:58,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-11-16 20:00:58,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2021-11-16 20:00:58,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 122 states have (on average 1.1639344262295082) internal successors, (142), 124 states have internal predecessors, (142), 71 states have call successors, (71), 17 states have call predecessors, (71), 19 states have return successors, (77), 71 states have call predecessors, (77), 70 states have call successors, (77) [2021-11-16 20:00:58,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 290 transitions. [2021-11-16 20:00:58,077 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 290 transitions. Word has length 181 [2021-11-16 20:00:58,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:00:58,077 INFO L470 AbstractCegarLoop]: Abstraction has 213 states and 290 transitions. [2021-11-16 20:00:58,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2021-11-16 20:00:58,078 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 290 transitions. [2021-11-16 20:00:58,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-11-16 20:00:58,079 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:00:58,079 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 20:00:58,106 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 20:00:58,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:00:58,299 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:00:58,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:00:58,300 INFO L85 PathProgramCache]: Analyzing trace with hash -71678011, now seen corresponding path program 1 times [2021-11-16 20:00:58,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:00:58,300 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276073848] [2021-11-16 20:00:58,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:00:58,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:00:58,332 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-16 20:00:58,333 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1668248025] [2021-11-16 20:00:58,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:00:58,333 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:00:58,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 20:00:58,348 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 20:00:58,376 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 20:00:58,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:00:58,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 2669 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-16 20:00:58,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 20:00:59,050 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2021-11-16 20:00:59,050 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-16 20:00:59,051 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:00:59,051 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276073848] [2021-11-16 20:00:59,051 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-16 20:00:59,051 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668248025] [2021-11-16 20:00:59,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1668248025] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 20:00:59,051 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 20:00:59,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-16 20:00:59,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969910886] [2021-11-16 20:00:59,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 20:00:59,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-16 20:00:59,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:00:59,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-16 20:00:59,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-16 20:00:59,053 INFO L87 Difference]: Start difference. First operand 213 states and 290 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 4 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2021-11-16 20:00:59,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:00:59,324 INFO L93 Difference]: Finished difference Result 379 states and 509 transitions. [2021-11-16 20:00:59,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-16 20:00:59,325 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 4 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 195 [2021-11-16 20:00:59,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:00:59,326 INFO L225 Difference]: With dead ends: 379 [2021-11-16 20:00:59,326 INFO L226 Difference]: Without dead ends: 211 [2021-11-16 20:00:59,327 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-11-16 20:00:59,327 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 304 mSDsluCounter, 726 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 931 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-16 20:00:59,327 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [304 Valid, 931 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-16 20:00:59,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2021-11-16 20:00:59,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2021-11-16 20:00:59,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 121 states have (on average 1.1570247933884297) internal successors, (140), 122 states have internal predecessors, (140), 71 states have call successors, (71), 17 states have call predecessors, (71), 18 states have return successors, (72), 71 states have call predecessors, (72), 70 states have call successors, (72) [2021-11-16 20:00:59,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 283 transitions. [2021-11-16 20:00:59,336 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 283 transitions. Word has length 195 [2021-11-16 20:00:59,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:00:59,336 INFO L470 AbstractCegarLoop]: Abstraction has 211 states and 283 transitions. [2021-11-16 20:00:59,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 4 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2021-11-16 20:00:59,337 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 283 transitions. [2021-11-16 20:00:59,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-11-16 20:00:59,338 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:00:59,338 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 20:00:59,361 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 20:00:59,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:00:59,559 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:00:59,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:00:59,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1712202978, now seen corresponding path program 1 times [2021-11-16 20:00:59,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:00:59,560 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678691096] [2021-11-16 20:00:59,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:00:59,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:00:59,637 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-16 20:00:59,651 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [403774100] [2021-11-16 20:00:59,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:00:59,651 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:00:59,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 20:00:59,653 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 20:00:59,654 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 20:01:00,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:01:00,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 2790 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-16 20:01:00,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 20:01:00,330 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 429 trivial. 0 not checked. [2021-11-16 20:01:00,330 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-16 20:01:00,330 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:01:00,330 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678691096] [2021-11-16 20:01:00,330 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-16 20:01:00,330 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403774100] [2021-11-16 20:01:00,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [403774100] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 20:01:00,331 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 20:01:00,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-16 20:01:00,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597184386] [2021-11-16 20:01:00,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 20:01:00,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-16 20:01:00,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:01:00,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-16 20:01:00,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-16 20:01:00,332 INFO L87 Difference]: Start difference. First operand 211 states and 283 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 1 states have call successors, (24) [2021-11-16 20:01:00,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:01:00,357 INFO L93 Difference]: Finished difference Result 269 states and 354 transitions. [2021-11-16 20:01:00,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-16 20:01:00,358 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 1 states have call successors, (24) Word has length 210 [2021-11-16 20:01:00,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:01:00,361 INFO L225 Difference]: With dead ends: 269 [2021-11-16 20:01:00,361 INFO L226 Difference]: Without dead ends: 220 [2021-11-16 20:01:00,361 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 205 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 20:01:00,362 INFO L933 BasicCegarLoop]: 276 mSDtfsCounter, 3 mSDsluCounter, 1090 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1366 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-16 20:01:00,362 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 1366 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-16 20:01:00,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-11-16 20:01:00,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 213. [2021-11-16 20:01:00,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 123 states have (on average 1.1544715447154472) internal successors, (142), 124 states have internal predecessors, (142), 71 states have call successors, (71), 17 states have call predecessors, (71), 18 states have return successors, (72), 71 states have call predecessors, (72), 70 states have call successors, (72) [2021-11-16 20:01:00,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 285 transitions. [2021-11-16 20:01:00,372 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 285 transitions. Word has length 210 [2021-11-16 20:01:00,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:01:00,373 INFO L470 AbstractCegarLoop]: Abstraction has 213 states and 285 transitions. [2021-11-16 20:01:00,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 1 states have call successors, (24) [2021-11-16 20:01:00,373 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 285 transitions. [2021-11-16 20:01:00,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2021-11-16 20:01:00,375 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:01:00,375 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 20:01:00,395 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-16 20:01:00,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:01:00,593 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:01:00,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:01:00,594 INFO L85 PathProgramCache]: Analyzing trace with hash 870357412, now seen corresponding path program 1 times [2021-11-16 20:01:00,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:01:00,594 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394041088] [2021-11-16 20:01:00,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:01:00,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:01:00,635 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-16 20:01:00,635 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [34684853] [2021-11-16 20:01:00,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:01:00,635 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:01:00,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 20:01:00,652 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 20:01:00,653 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 20:01:01,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:01:01,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 2912 conjuncts, 114 conjunts are in the unsatisfiable core [2021-11-16 20:01:01,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 20:01:01,112 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-11-16 20:01:02,832 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ensure_array_list_has_allocated_data_member_#t~ret580.base_5| Int) (|v_ensure_array_list_has_allocated_data_member_#t~ret580.offset_5| Int) (ensure_array_list_has_allocated_data_member_~list.offset Int)) (and (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| (store (select |c_old(#memory_$Pointer$.offset)| |c_ensure_array_list_has_allocated_data_member_#in~list.base|) ensure_array_list_has_allocated_data_member_~list.offset |v_ensure_array_list_has_allocated_data_member_#t~ret580.offset_5|))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| (store (select |c_old(#memory_$Pointer$.base)| |c_ensure_array_list_has_allocated_data_member_#in~list.base|) ensure_array_list_has_allocated_data_member_~list.offset |v_ensure_array_list_has_allocated_data_member_#t~ret580.base_5|))))) is different from true [2021-11-16 20:01:02,875 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 41 treesize of output 40 [2021-11-16 20:01:02,878 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 30 treesize of output 29 [2021-11-16 20:01:05,056 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_array_list_is_valid_~#required_size~0.base| Int)) (and (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_array_list_is_valid_~#required_size~0.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_array_list_is_valid_~#required_size~0.base|) 0 (select (select |c_#memory_$Pointer$.offset| |aws_array_list_is_valid_~#required_size~0.base|) 0)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_array_list_is_valid_~#required_size~0.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_array_list_is_valid_~#required_size~0.base|) 0 (select (select |c_#memory_$Pointer$.base| |aws_array_list_is_valid_~#required_size~0.base|) 0)))))) is different from true [2021-11-16 20:01:05,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:01:05,146 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 49 treesize of output 37 [2021-11-16 20:01:05,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:01:05,155 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 34 treesize of output 22 [2021-11-16 20:01:06,025 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 343 proven. 10 refuted. 0 times theorem prover too weak. 154 trivial. 7 not checked. [2021-11-16 20:01:06,025 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-16 20:01:19,650 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_2 Int) (|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_30| Int) (v_DerPreprocessor_1 Int)) (= 0 (let ((.cse0 (+ 32 |c_ULTIMATE.start_aws_array_list_copy_harness_~#from~0#1.offset|))) (+ (select (select (store |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_30| (store (select |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_30|) 0 v_DerPreprocessor_2)) |c_ULTIMATE.start_aws_array_list_copy_harness_~#from~0#1.base|) .cse0) (select (select (store |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_30| (store (select |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_30|) 0 v_DerPreprocessor_1)) |c_ULTIMATE.start_aws_array_list_copy_harness_~#from~0#1.base|) .cse0))))) is different from false [2021-11-16 20:01:19,653 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:01:19,653 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394041088] [2021-11-16 20:01:19,653 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-16 20:01:19,654 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34684853] [2021-11-16 20:01:19,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [34684853] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-16 20:01:19,654 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-16 20:01:19,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2021-11-16 20:01:19,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047012756] [2021-11-16 20:01:19,654 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-16 20:01:19,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-16 20:01:19,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:01:19,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-16 20:01:19,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=778, Unknown=6, NotChecked=174, Total=1056 [2021-11-16 20:01:19,655 INFO L87 Difference]: Start difference. First operand 213 states and 285 transitions. Second operand has 21 states, 19 states have (on average 4.842105263157895) internal successors, (92), 21 states have internal predecessors, (92), 10 states have call successors, (32), 4 states have call predecessors, (32), 8 states have return successors, (31), 9 states have call predecessors, (31), 10 states have call successors, (31) [2021-11-16 20:01:55,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:01:55,123 INFO L93 Difference]: Finished difference Result 501 states and 736 transitions. [2021-11-16 20:01:55,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-16 20:01:55,124 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 4.842105263157895) internal successors, (92), 21 states have internal predecessors, (92), 10 states have call successors, (32), 4 states have call predecessors, (32), 8 states have return successors, (31), 9 states have call predecessors, (31), 10 states have call successors, (31) Word has length 226 [2021-11-16 20:01:55,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:01:55,126 INFO L225 Difference]: With dead ends: 501 [2021-11-16 20:01:55,126 INFO L226 Difference]: Without dead ends: 321 [2021-11-16 20:01:55,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 310 SyntacticMatches, 11 SemanticMatches, 41 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 379 ImplicationChecksByTransitivity, 42.5s TimeCoverageRelationStatistics Valid=156, Invalid=1403, Unknown=13, NotChecked=234, Total=1806 [2021-11-16 20:01:55,127 INFO L933 BasicCegarLoop]: 312 mSDtfsCounter, 190 mSDsluCounter, 1740 mSDsCounter, 0 mSdLazyCounter, 2365 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 2052 SdHoareTripleChecker+Invalid, 3695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 2365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1139 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2021-11-16 20:01:55,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [263 Valid, 2052 Invalid, 3695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 2365 Invalid, 0 Unknown, 1139 Unchecked, 9.1s Time] [2021-11-16 20:01:55,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2021-11-16 20:01:55,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 232. [2021-11-16 20:01:55,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 133 states have (on average 1.1428571428571428) internal successors, (152), 136 states have internal predecessors, (152), 76 states have call successors, (76), 19 states have call predecessors, (76), 22 states have return successors, (94), 76 states have call predecessors, (94), 75 states have call successors, (94) [2021-11-16 20:01:55,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 322 transitions. [2021-11-16 20:01:55,145 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 322 transitions. Word has length 226 [2021-11-16 20:01:55,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:01:55,146 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 322 transitions. [2021-11-16 20:01:55,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 4.842105263157895) internal successors, (92), 21 states have internal predecessors, (92), 10 states have call successors, (32), 4 states have call predecessors, (32), 8 states have return successors, (31), 9 states have call predecessors, (31), 10 states have call successors, (31) [2021-11-16 20:01:55,146 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 322 transitions. [2021-11-16 20:01:55,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2021-11-16 20:01:55,148 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:01:55,148 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 20:01:55,186 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 20:01:55,379 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,SelfDestructingSolverStorable7 [2021-11-16 20:01:55,380 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:01:55,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:01:55,380 INFO L85 PathProgramCache]: Analyzing trace with hash -905056813, now seen corresponding path program 1 times [2021-11-16 20:01:55,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:01:55,380 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623689702] [2021-11-16 20:01:55,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:01:55,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:01:55,412 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-16 20:01:55,412 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [848491680] [2021-11-16 20:01:55,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:01:55,412 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:01:55,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 20:01:55,413 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 20:01:55,416 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 20:01:55,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:01:55,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 2935 conjuncts, 43 conjunts are in the unsatisfiable core [2021-11-16 20:01:55,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 20:01:56,407 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 20:01:56,795 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-11-16 20:01:56,795 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 21 [2021-11-16 20:01:59,532 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| (select (select |c_#memory_$Pointer$.base| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset|))) |c_#memory_$Pointer$.base|)) is different from true [2021-11-16 20:02:49,355 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 292 proven. 0 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2021-11-16 20:02:49,355 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-16 20:02:49,355 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:02:49,355 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623689702] [2021-11-16 20:02:49,355 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-16 20:02:49,355 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [848491680] [2021-11-16 20:02:49,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [848491680] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 20:02:49,355 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 20:02:49,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-16 20:02:49,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375408511] [2021-11-16 20:02:49,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 20:02:49,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-16 20:02:49,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:02:49,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-16 20:02:49,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=239, Unknown=21, NotChecked=32, Total=342 [2021-11-16 20:02:49,357 INFO L87 Difference]: Start difference. First operand 232 states and 322 transitions. Second operand has 19 states, 17 states have (on average 5.294117647058823) internal successors, (90), 16 states have internal predecessors, (90), 8 states have call successors, (33), 4 states have call predecessors, (33), 7 states have return successors, (32), 8 states have call predecessors, (32), 8 states have call successors, (32) [2021-11-16 20:02:54,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:02:54,664 INFO L93 Difference]: Finished difference Result 426 states and 586 transitions. [2021-11-16 20:02:54,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-16 20:02:54,665 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 5.294117647058823) internal successors, (90), 16 states have internal predecessors, (90), 8 states have call successors, (33), 4 states have call predecessors, (33), 7 states have return successors, (32), 8 states have call predecessors, (32), 8 states have call successors, (32) Word has length 232 [2021-11-16 20:02:54,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:02:54,666 INFO L225 Difference]: With dead ends: 426 [2021-11-16 20:02:54,666 INFO L226 Difference]: Without dead ends: 243 [2021-11-16 20:02:54,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 214 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 52.2s TimeCoverageRelationStatistics Valid=68, Invalid=377, Unknown=21, NotChecked=40, Total=506 [2021-11-16 20:02:54,667 INFO L933 BasicCegarLoop]: 226 mSDtfsCounter, 96 mSDsluCounter, 1091 mSDsCounter, 0 mSdLazyCounter, 1046 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 1317 SdHoareTripleChecker+Invalid, 2002 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1046 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 869 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2021-11-16 20:02:54,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 1317 Invalid, 2002 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1046 Invalid, 0 Unknown, 869 Unchecked, 4.9s Time] [2021-11-16 20:02:54,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-11-16 20:02:54,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 235. [2021-11-16 20:02:54,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 135 states have (on average 1.1407407407407408) internal successors, (154), 138 states have internal predecessors, (154), 76 states have call successors, (76), 20 states have call predecessors, (76), 23 states have return successors, (94), 76 states have call predecessors, (94), 75 states have call successors, (94) [2021-11-16 20:02:54,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 324 transitions. [2021-11-16 20:02:54,676 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 324 transitions. Word has length 232 [2021-11-16 20:02:54,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:02:54,676 INFO L470 AbstractCegarLoop]: Abstraction has 235 states and 324 transitions. [2021-11-16 20:02:54,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 5.294117647058823) internal successors, (90), 16 states have internal predecessors, (90), 8 states have call successors, (33), 4 states have call predecessors, (33), 7 states have return successors, (32), 8 states have call predecessors, (32), 8 states have call successors, (32) [2021-11-16 20:02:54,677 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 324 transitions. [2021-11-16 20:02:54,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2021-11-16 20:02:54,678 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:02:54,678 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 20:02:54,699 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-11-16 20:02:54,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:02:54,891 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:02:54,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:02:54,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1304057108, now seen corresponding path program 1 times [2021-11-16 20:02:54,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:02:54,892 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828982719] [2021-11-16 20:02:54,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:02:54,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:02:54,932 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-16 20:02:54,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1278543601] [2021-11-16 20:02:54,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:02:54,947 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:02:54,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 20:02:54,948 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-16 20:02:54,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-16 20:02:55,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:02:55,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 2912 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-16 20:02:55,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 20:02:56,425 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 168 proven. 0 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2021-11-16 20:02:56,425 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-16 20:02:56,425 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:02:56,425 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828982719] [2021-11-16 20:02:56,425 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-16 20:02:56,425 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278543601] [2021-11-16 20:02:56,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1278543601] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 20:02:56,425 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 20:02:56,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-16 20:02:56,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131536738] [2021-11-16 20:02:56,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 20:02:56,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-16 20:02:56,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:02:56,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-16 20:02:56,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-16 20:02:56,426 INFO L87 Difference]: Start difference. First operand 235 states and 324 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-16 20:02:57,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:02:57,994 INFO L93 Difference]: Finished difference Result 455 states and 654 transitions. [2021-11-16 20:02:57,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-16 20:02:57,995 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 228 [2021-11-16 20:02:58,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:02:58,006 INFO L225 Difference]: With dead ends: 455 [2021-11-16 20:02:58,006 INFO L226 Difference]: Without dead ends: 240 [2021-11-16 20:02:58,010 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-16 20:02:58,012 INFO L933 BasicCegarLoop]: 284 mSDtfsCounter, 7 mSDsluCounter, 767 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1051 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-16 20:02:58,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 1051 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-16 20:02:58,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2021-11-16 20:02:58,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 236. [2021-11-16 20:02:58,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 136 states have (on average 1.1397058823529411) internal successors, (155), 139 states have internal predecessors, (155), 76 states have call successors, (76), 20 states have call predecessors, (76), 23 states have return successors, (94), 76 states have call predecessors, (94), 75 states have call successors, (94) [2021-11-16 20:02:58,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 325 transitions. [2021-11-16 20:02:58,042 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 325 transitions. Word has length 228 [2021-11-16 20:02:58,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:02:58,042 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 325 transitions. [2021-11-16 20:02:58,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-16 20:02:58,043 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 325 transitions. [2021-11-16 20:02:58,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2021-11-16 20:02:58,044 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:02:58,044 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 20:02:58,068 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-16 20:02:58,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-16 20:02:58,259 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:02:58,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:02:58,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1642776618, now seen corresponding path program 1 times [2021-11-16 20:02:58,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:02:58,260 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809804074] [2021-11-16 20:02:58,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:02:58,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:02:58,299 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-16 20:02:58,299 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1991475055] [2021-11-16 20:02:58,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:02:58,300 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:02:58,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 20:02:58,301 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-16 20:02:58,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-16 20:02:58,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:02:58,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 2917 conjuncts, 86 conjunts are in the unsatisfiable core [2021-11-16 20:02:58,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 20:02:59,498 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-11-16 20:02:59,498 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2021-11-16 20:02:59,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:02:59,519 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 21 treesize of output 20 [2021-11-16 20:03:02,362 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| (select (select |c_#memory_$Pointer$.offset| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset|)))) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| (select (select |c_#memory_$Pointer$.base| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset|))) |c_#memory_$Pointer$.base|))) is different from true [2021-11-16 20:04:08,963 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 55 treesize of output 47 [2021-11-16 20:04:08,980 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2021-11-16 20:04:16,289 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 214 proven. 0 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2021-11-16 20:04:16,289 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-16 20:04:16,289 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:04:16,289 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809804074] [2021-11-16 20:04:16,289 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-16 20:04:16,289 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1991475055] [2021-11-16 20:04:16,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1991475055] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 20:04:16,290 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 20:04:16,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-16 20:04:16,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562563509] [2021-11-16 20:04:16,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 20:04:16,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-16 20:04:16,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:04:16,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-16 20:04:16,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=301, Unknown=31, NotChecked=36, Total=420 [2021-11-16 20:04:16,291 INFO L87 Difference]: Start difference. First operand 236 states and 325 transitions. Second operand has 21 states, 17 states have (on average 4.764705882352941) internal successors, (81), 18 states have internal predecessors, (81), 8 states have call successors, (30), 4 states have call predecessors, (30), 7 states have return successors, (29), 7 states have call predecessors, (29), 8 states have call successors, (29) [2021-11-16 20:04:28,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:04:28,421 INFO L93 Difference]: Finished difference Result 467 states and 653 transitions. [2021-11-16 20:04:28,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-16 20:04:28,421 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 17 states have (on average 4.764705882352941) internal successors, (81), 18 states have internal predecessors, (81), 8 states have call successors, (30), 4 states have call predecessors, (30), 7 states have return successors, (29), 7 states have call predecessors, (29), 8 states have call successors, (29) Word has length 228 [2021-11-16 20:04:28,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:04:28,423 INFO L225 Difference]: With dead ends: 467 [2021-11-16 20:04:28,423 INFO L226 Difference]: Without dead ends: 251 [2021-11-16 20:04:28,424 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 207 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 82.5s TimeCoverageRelationStatistics Valid=101, Invalid=625, Unknown=34, NotChecked=52, Total=812 [2021-11-16 20:04:28,424 INFO L933 BasicCegarLoop]: 229 mSDtfsCounter, 92 mSDsluCounter, 1366 mSDsCounter, 0 mSdLazyCounter, 862 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 1595 SdHoareTripleChecker+Invalid, 2220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1274 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-11-16 20:04:28,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 1595 Invalid, 2220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 862 Invalid, 0 Unknown, 1274 Unchecked, 4.6s Time] [2021-11-16 20:04:28,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2021-11-16 20:04:28,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 244. [2021-11-16 20:04:28,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 141 states have (on average 1.1347517730496455) internal successors, (160), 145 states have internal predecessors, (160), 77 states have call successors, (77), 21 states have call predecessors, (77), 25 states have return successors, (111), 77 states have call predecessors, (111), 76 states have call successors, (111) [2021-11-16 20:04:28,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 348 transitions. [2021-11-16 20:04:28,437 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 348 transitions. Word has length 228 [2021-11-16 20:04:28,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:04:28,438 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 348 transitions. [2021-11-16 20:04:28,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 17 states have (on average 4.764705882352941) internal successors, (81), 18 states have internal predecessors, (81), 8 states have call successors, (30), 4 states have call predecessors, (30), 7 states have return successors, (29), 7 states have call predecessors, (29), 8 states have call successors, (29) [2021-11-16 20:04:28,438 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 348 transitions. [2021-11-16 20:04:28,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2021-11-16 20:04:28,440 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:04:28,441 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 20:04:28,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-16 20:04:28,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-16 20:04:28,652 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:04:28,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:04:28,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1782810395, now seen corresponding path program 1 times [2021-11-16 20:04:28,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:04:28,652 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273915988] [2021-11-16 20:04:28,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:04:28,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:04:28,689 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-16 20:04:28,689 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1539713122] [2021-11-16 20:04:28,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:04:28,689 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:04:28,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 20:04:28,690 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-16 20:04:28,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-16 20:04:29,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:04:29,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 2940 conjuncts, 184 conjunts are in the unsatisfiable core [2021-11-16 20:04:29,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 20:04:29,216 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-16 20:04:29,217 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2021-11-16 20:04:30,736 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 13 treesize of output 9 [2021-11-16 20:04:30,758 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 24 treesize of output 20 [2021-11-16 20:04:30,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 31 [2021-11-16 20:04:31,384 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-11-16 20:04:31,384 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 27 [2021-11-16 20:04:31,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:04:31,421 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 21 treesize of output 20 [2021-11-16 20:04:31,704 INFO L354 Elim1Store]: treesize reduction 52, result has 17.5 percent of original size [2021-11-16 20:04:31,705 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 28 [2021-11-16 20:04:34,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:04:34,353 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 58 [2021-11-16 20:04:34,485 INFO L354 Elim1Store]: treesize reduction 40, result has 32.2 percent of original size [2021-11-16 20:04:34,486 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 61 treesize of output 65 [2021-11-16 20:04:34,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:04:34,503 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 41 [2021-11-16 20:04:45,198 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 28 [2021-11-16 20:04:45,230 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 22 treesize of output 21 [2021-11-16 20:04:45,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:04:45,274 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 21 treesize of output 20 [2021-11-16 20:04:48,328 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~b#1| Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (|aws_mul_size_checked_aws_mul_u64_checked_~a#1| Int)) (and (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| (select (select |c_#memory_$Pointer$.offset| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset|)))) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| (select (select |c_#memory_$Pointer$.base| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset|))) |c_#memory_$Pointer$.base|) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| (* |aws_mul_size_checked_aws_mul_u64_checked_~b#1| |aws_mul_size_checked_aws_mul_u64_checked_~a#1|)))))) is different from true [2021-11-16 20:04:50,472 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~b#1| Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (|aws_mul_size_checked_aws_mul_u64_checked_~a#1| Int)) (and (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 (select (select |c_#memory_$Pointer$.base| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0))) |c_#memory_$Pointer$.base|) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 (select (select |c_#memory_$Pointer$.offset| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0)))) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 (* |aws_mul_size_checked_aws_mul_u64_checked_~b#1| |aws_mul_size_checked_aws_mul_u64_checked_~a#1|)))))) is different from true [2021-11-16 20:04:50,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:04:50,761 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-16 20:04:50,764 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-16 20:04:50,764 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 84 treesize of output 86 [2021-11-16 20:04:50,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:04:50,789 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 80 treesize of output 68 [2021-11-16 20:04:50,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:04:50,807 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 65 treesize of output 53 [2021-11-16 20:05:00,719 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 9 treesize of output 3 [2021-11-16 20:05:05,168 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~b#1| Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (|aws_mul_size_checked_aws_mul_u64_checked_~a#1| Int)) (and (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| (select (select |c_#memory_$Pointer$.base| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset|))) |c_#memory_$Pointer$.base|) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| (* |aws_mul_size_checked_aws_mul_u64_checked_~b#1| |aws_mul_size_checked_aws_mul_u64_checked_~a#1|)))))) is different from true [2021-11-16 20:05:38,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:05:39,180 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 306 proven. 99 refuted. 1 times theorem prover too weak. 78 trivial. 23 not checked. [2021-11-16 20:05:39,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-16 20:05:42,792 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_aws_mul_size_checked_aws_mul_u64_checked_~b#1_50| Int) (|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_51| Int) (|v_aws_mul_size_checked_aws_mul_u64_checked_~a#1_50| Int) (v_DerPreprocessor_5 Int)) (or (not (= (mod (select (select (store |c_#memory_int| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_51| (store (select |c_#memory_int| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_51|) 0 (* |v_aws_mul_size_checked_aws_mul_u64_checked_~a#1_50| |v_aws_mul_size_checked_aws_mul_u64_checked_~b#1_50|))) |c_ULTIMATE.start_aws_array_list_copy_~from#1.base|) (+ 8 |c_ULTIMATE.start_aws_array_list_copy_~from#1.offset|)) 18446744073709551616) 0)) (not (= (select (select (store |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_51| (store (select |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_51|) 0 v_DerPreprocessor_5)) |c_ULTIMATE.start_aws_array_list_copy_~from#1.base|) (+ 32 |c_ULTIMATE.start_aws_array_list_copy_~from#1.offset|)) 0)))) is different from false [2021-11-16 20:05:42,799 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:05:42,799 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273915988] [2021-11-16 20:05:42,799 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-16 20:05:42,799 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539713122] [2021-11-16 20:05:42,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539713122] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-16 20:05:42,799 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-16 20:05:42,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2021-11-16 20:05:42,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163526582] [2021-11-16 20:05:42,799 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-16 20:05:42,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2021-11-16 20:05:42,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:05:42,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-11-16 20:05:42,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1897, Unknown=16, NotChecked=364, Total=2450 [2021-11-16 20:05:42,801 INFO L87 Difference]: Start difference. First operand 244 states and 348 transitions. Second operand has 49 states, 44 states have (on average 2.75) internal successors, (121), 41 states have internal predecessors, (121), 18 states have call successors, (35), 13 states have call predecessors, (35), 17 states have return successors, (34), 18 states have call predecessors, (34), 18 states have call successors, (34) [2021-11-16 20:07:47,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:07:47,321 INFO L93 Difference]: Finished difference Result 495 states and 702 transitions. [2021-11-16 20:07:47,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-11-16 20:07:47,322 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 44 states have (on average 2.75) internal successors, (121), 41 states have internal predecessors, (121), 18 states have call successors, (35), 13 states have call predecessors, (35), 17 states have return successors, (34), 18 states have call predecessors, (34), 18 states have call successors, (34) Word has length 234 [2021-11-16 20:07:47,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:07:47,324 INFO L225 Difference]: With dead ends: 495 [2021-11-16 20:07:47,324 INFO L226 Difference]: Without dead ends: 318 [2021-11-16 20:07:47,326 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 250 SyntacticMatches, 20 SemanticMatches, 75 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 1821 ImplicationChecksByTransitivity, 175.0s TimeCoverageRelationStatistics Valid=430, Invalid=4786, Unknown=56, NotChecked=580, Total=5852 [2021-11-16 20:07:47,326 INFO L933 BasicCegarLoop]: 251 mSDtfsCounter, 403 mSDsluCounter, 1823 mSDsCounter, 0 mSdLazyCounter, 2557 mSolverCounterSat, 501 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 2074 SdHoareTripleChecker+Invalid, 7734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 501 IncrementalHoareTripleChecker+Valid, 2557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4676 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2021-11-16 20:07:47,326 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [405 Valid, 2074 Invalid, 7734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [501 Valid, 2557 Invalid, 0 Unknown, 4676 Unchecked, 12.8s Time] [2021-11-16 20:07:47,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2021-11-16 20:07:47,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 295. [2021-11-16 20:07:47,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 173 states have (on average 1.1213872832369942) internal successors, (194), 177 states have internal predecessors, (194), 88 states have call successors, (88), 28 states have call predecessors, (88), 33 states have return successors, (143), 89 states have call predecessors, (143), 87 states have call successors, (143) [2021-11-16 20:07:47,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 425 transitions. [2021-11-16 20:07:47,344 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 425 transitions. Word has length 234 [2021-11-16 20:07:47,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:07:47,345 INFO L470 AbstractCegarLoop]: Abstraction has 295 states and 425 transitions. [2021-11-16 20:07:47,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 44 states have (on average 2.75) internal successors, (121), 41 states have internal predecessors, (121), 18 states have call successors, (35), 13 states have call predecessors, (35), 17 states have return successors, (34), 18 states have call predecessors, (34), 18 states have call successors, (34) [2021-11-16 20:07:47,345 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 425 transitions. [2021-11-16 20:07:47,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2021-11-16 20:07:47,346 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:07:47,347 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 20:07:47,374 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-16 20:07:47,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-16 20:07:47,568 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:07:47,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:07:47,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1307029757, now seen corresponding path program 2 times [2021-11-16 20:07:47,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:07:47,569 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106249702] [2021-11-16 20:07:47,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:07:47,570 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:07:47,605 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-16 20:07:47,606 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [207209134] [2021-11-16 20:07:47,606 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-16 20:07:47,606 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:07:47,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 20:07:47,607 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-16 20:07:47,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-16 20:07:48,577 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-16 20:07:48,578 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-16 20:07:48,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 3004 conjuncts, 50 conjunts are in the unsatisfiable core [2021-11-16 20:07:48,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 20:07:48,822 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 21 treesize of output 9 [2021-11-16 20:07:50,836 INFO L134 CoverageAnalysis]: Checked inductivity of 567 backedges. 217 proven. 29 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2021-11-16 20:07:50,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-16 20:07:56,261 INFO L134 CoverageAnalysis]: Checked inductivity of 567 backedges. 69 proven. 19 refuted. 0 times theorem prover too weak. 479 trivial. 0 not checked. [2021-11-16 20:07:56,261 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:07:56,261 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106249702] [2021-11-16 20:07:56,261 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-16 20:07:56,261 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [207209134] [2021-11-16 20:07:56,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [207209134] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-16 20:07:56,261 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-16 20:07:56,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15] total 25 [2021-11-16 20:07:56,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493267572] [2021-11-16 20:07:56,262 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-16 20:07:56,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-16 20:07:56,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:07:56,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-16 20:07:56,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=547, Unknown=0, NotChecked=0, Total=600 [2021-11-16 20:07:56,263 INFO L87 Difference]: Start difference. First operand 295 states and 425 transitions. Second operand has 25 states, 20 states have (on average 5.5) internal successors, (110), 18 states have internal predecessors, (110), 7 states have call successors, (38), 3 states have call predecessors, (38), 8 states have return successors, (40), 9 states have call predecessors, (40), 6 states have call successors, (40) [2021-11-16 20:08:02,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:08:02,433 INFO L93 Difference]: Finished difference Result 502 states and 753 transitions. [2021-11-16 20:08:02,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-16 20:08:02,434 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 20 states have (on average 5.5) internal successors, (110), 18 states have internal predecessors, (110), 7 states have call successors, (38), 3 states have call predecessors, (38), 8 states have return successors, (40), 9 states have call predecessors, (40), 6 states have call successors, (40) Word has length 258 [2021-11-16 20:08:02,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:08:02,436 INFO L225 Difference]: With dead ends: 502 [2021-11-16 20:08:02,436 INFO L226 Difference]: Without dead ends: 321 [2021-11-16 20:08:02,437 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 519 GetRequests, 490 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=76, Invalid=794, Unknown=0, NotChecked=0, Total=870 [2021-11-16 20:08:02,438 INFO L933 BasicCegarLoop]: 268 mSDtfsCounter, 24 mSDsluCounter, 5440 mSDsCounter, 0 mSdLazyCounter, 1038 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 5708 SdHoareTripleChecker+Invalid, 1049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2021-11-16 20:08:02,438 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 5708 Invalid, 1049 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1038 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2021-11-16 20:08:02,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2021-11-16 20:08:02,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 307. [2021-11-16 20:08:02,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 183 states have (on average 1.1202185792349726) internal successors, (205), 189 states have internal predecessors, (205), 88 states have call successors, (88), 28 states have call predecessors, (88), 35 states have return successors, (175), 89 states have call predecessors, (175), 87 states have call successors, (175) [2021-11-16 20:08:02,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 468 transitions. [2021-11-16 20:08:02,451 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 468 transitions. Word has length 258 [2021-11-16 20:08:02,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:08:02,451 INFO L470 AbstractCegarLoop]: Abstraction has 307 states and 468 transitions. [2021-11-16 20:08:02,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 20 states have (on average 5.5) internal successors, (110), 18 states have internal predecessors, (110), 7 states have call successors, (38), 3 states have call predecessors, (38), 8 states have return successors, (40), 9 states have call predecessors, (40), 6 states have call successors, (40) [2021-11-16 20:08:02,451 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 468 transitions. [2021-11-16 20:08:02,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2021-11-16 20:08:02,453 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:08:02,453 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 20:08:02,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-16 20:08:02,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-16 20:08:02,668 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:08:02,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:08:02,668 INFO L85 PathProgramCache]: Analyzing trace with hash 447377916, now seen corresponding path program 2 times [2021-11-16 20:08:02,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:08:02,668 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377468713] [2021-11-16 20:08:02,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:08:02,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:08:02,707 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-16 20:08:02,707 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1734889349] [2021-11-16 20:08:02,707 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-16 20:08:02,707 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:08:02,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 20:08:02,708 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-16 20:08:02,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-16 20:08:03,494 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-16 20:08:03,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-16 20:08:03,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 2965 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-16 20:08:03,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 20:08:04,870 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 262 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2021-11-16 20:08:04,870 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-16 20:08:04,871 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:08:04,871 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377468713] [2021-11-16 20:08:04,871 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-16 20:08:04,871 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734889349] [2021-11-16 20:08:04,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1734889349] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 20:08:04,871 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 20:08:04,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-16 20:08:04,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772769689] [2021-11-16 20:08:04,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 20:08:04,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-16 20:08:04,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:08:04,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-16 20:08:04,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-11-16 20:08:04,872 INFO L87 Difference]: Start difference. First operand 307 states and 468 transitions. Second operand has 12 states, 11 states have (on average 8.090909090909092) internal successors, (89), 9 states have internal predecessors, (89), 3 states have call successors, (29), 2 states have call predecessors, (29), 6 states have return successors, (30), 5 states have call predecessors, (30), 3 states have call successors, (30) [2021-11-16 20:08:06,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:08:06,680 INFO L93 Difference]: Finished difference Result 503 states and 765 transitions. [2021-11-16 20:08:06,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-16 20:08:06,681 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.090909090909092) internal successors, (89), 9 states have internal predecessors, (89), 3 states have call successors, (29), 2 states have call predecessors, (29), 6 states have return successors, (30), 5 states have call predecessors, (30), 3 states have call successors, (30) Word has length 246 [2021-11-16 20:08:06,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:08:06,683 INFO L225 Difference]: With dead ends: 503 [2021-11-16 20:08:06,683 INFO L226 Difference]: Without dead ends: 307 [2021-11-16 20:08:06,684 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-11-16 20:08:06,684 INFO L933 BasicCegarLoop]: 275 mSDtfsCounter, 11 mSDsluCounter, 2676 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2951 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-16 20:08:06,685 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 2951 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-16 20:08:06,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2021-11-16 20:08:06,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 307. [2021-11-16 20:08:06,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 183 states have (on average 1.1202185792349726) internal successors, (205), 189 states have internal predecessors, (205), 88 states have call successors, (88), 28 states have call predecessors, (88), 35 states have return successors, (169), 89 states have call predecessors, (169), 87 states have call successors, (169) [2021-11-16 20:08:06,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 462 transitions. [2021-11-16 20:08:06,698 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 462 transitions. Word has length 246 [2021-11-16 20:08:06,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:08:06,699 INFO L470 AbstractCegarLoop]: Abstraction has 307 states and 462 transitions. [2021-11-16 20:08:06,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.090909090909092) internal successors, (89), 9 states have internal predecessors, (89), 3 states have call successors, (29), 2 states have call predecessors, (29), 6 states have return successors, (30), 5 states have call predecessors, (30), 3 states have call successors, (30) [2021-11-16 20:08:06,700 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 462 transitions. [2021-11-16 20:08:06,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2021-11-16 20:08:06,701 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:08:06,701 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 20:08:06,724 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-16 20:08:06,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:08:06,916 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:08:06,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:08:06,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1791221477, now seen corresponding path program 3 times [2021-11-16 20:08:06,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:08:06,917 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047079077] [2021-11-16 20:08:06,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:08:06,917 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:08:06,951 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-16 20:08:06,952 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1474997203] [2021-11-16 20:08:06,952 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-16 20:08:06,952 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:08:06,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 20:08:06,953 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-16 20:08:06,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process Killed by 15