./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_array_list_swap_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_array_list_swap_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 6f838ff631dd7d907eee223e4bc065b6ce71a3dd1969d0a88cef9ccdcf3b54d1 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 15:28:58,689 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 15:28:58,691 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 15:28:58,711 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 15:28:58,713 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 15:28:58,716 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 15:28:58,718 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 15:28:58,723 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 15:28:58,725 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 15:28:58,729 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 15:28:58,730 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 15:28:58,731 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 15:28:58,731 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 15:28:58,733 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 15:28:58,735 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 15:28:58,737 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 15:28:58,737 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 15:28:58,738 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 15:28:58,741 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 15:28:58,742 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 15:28:58,744 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 15:28:58,745 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 15:28:58,746 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 15:28:58,747 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 15:28:58,748 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 15:28:58,750 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 15:28:58,750 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 15:28:58,751 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 15:28:58,752 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 15:28:58,752 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 15:28:58,753 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 15:28:58,754 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 15:28:58,755 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 15:28:58,755 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 15:28:58,756 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 15:28:58,756 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 15:28:58,757 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 15:28:58,757 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 15:28:58,757 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 15:28:58,758 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 15:28:58,758 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 15:28:58,759 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-21 15:28:58,786 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 15:28:58,786 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 15:28:58,787 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 15:28:58,787 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 15:28:58,787 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 15:28:58,788 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 15:28:58,788 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 15:28:58,788 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 15:28:58,788 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 15:28:58,789 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 15:28:58,789 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 15:28:58,789 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 15:28:58,790 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 15:28:58,790 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 15:28:58,790 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 15:28:58,790 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 15:28:58,790 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 15:28:58,790 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 15:28:58,791 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 15:28:58,791 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 15:28:58,791 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 15:28:58,791 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 15:28:58,791 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 15:28:58,791 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 15:28:58,792 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 15:28:58,792 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 15:28:58,792 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 15:28:58,792 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 15:28:58,792 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 15:28:58,792 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 15:28:58,792 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 15:28:58,793 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6f838ff631dd7d907eee223e4bc065b6ce71a3dd1969d0a88cef9ccdcf3b54d1 [2021-12-21 15:28:58,980 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 15:28:58,999 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 15:28:59,001 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 15:28:59,002 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 15:28:59,003 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 15:28:59,004 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_array_list_swap_harness.i [2021-12-21 15:28:59,056 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/adfad2f50/bbb3e72c8db541d7844ee3e291a0380c/FLAG09ad54f2c [2021-12-21 15:28:59,620 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 15:28:59,620 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_swap_harness.i [2021-12-21 15:28:59,650 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/adfad2f50/bbb3e72c8db541d7844ee3e291a0380c/FLAG09ad54f2c [2021-12-21 15:28:59,786 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/adfad2f50/bbb3e72c8db541d7844ee3e291a0380c [2021-12-21 15:28:59,788 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 15:28:59,789 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 15:28:59,790 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 15:28:59,791 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 15:28:59,793 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 15:28:59,794 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 03:28:59" (1/1) ... [2021-12-21 15:28:59,795 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48cb801 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:28:59, skipping insertion in model container [2021-12-21 15:28:59,795 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 03:28:59" (1/1) ... [2021-12-21 15:28:59,799 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 15:28:59,861 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 15:29:00,030 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_swap_harness.i[4493,4506] [2021-12-21 15:29:00,036 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_swap_harness.i[4553,4566] [2021-12-21 15:29:00,469 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-21 15:29:00,526 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:29:00,526 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:29:00,527 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:29:00,527 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:29:00,528 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:29:00,538 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:29:00,539 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:29:00,540 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:29:00,540 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:29:00,541 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:29:00,542 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:29:00,542 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:29:00,542 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:29:00,722 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-21 15:29:00,723 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-21 15:29:00,723 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-21 15:29:00,724 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-21 15:29:00,725 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-21 15:29:00,725 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-21 15:29:00,726 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-21 15:29:00,726 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-21 15:29:00,726 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-21 15:29:00,727 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-21 15:29:00,802 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:29:00,802 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:29:00,805 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:29:00,809 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:29:00,844 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 15:29:00,864 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 15:29:00,937 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_swap_harness.i[4493,4506] [2021-12-21 15:29:00,938 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_swap_harness.i[4553,4566] [2021-12-21 15:29:00,987 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-21 15:29:01,002 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:29:01,004 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:29:01,004 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:29:01,004 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:29:01,005 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:29:01,008 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:29:01,008 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:29:01,009 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:29:01,009 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:29:01,009 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:29:01,010 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:29:01,010 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:29:01,010 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:29:01,027 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-21 15:29:01,028 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-21 15:29:01,028 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-21 15:29:01,029 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-21 15:29:01,030 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-21 15:29:01,030 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-21 15:29:01,030 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-21 15:29:01,031 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-21 15:29:01,031 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-21 15:29:01,031 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-21 15:29:01,061 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:29:01,061 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:29:01,062 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:29:01,065 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:29:01,088 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 15:29:01,221 INFO L208 MainTranslator]: Completed translation [2021-12-21 15:29:01,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:29:01 WrapperNode [2021-12-21 15:29:01,222 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 15:29:01,222 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 15:29:01,222 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 15:29:01,223 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 15:29:01,227 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:29:01" (1/1) ... [2021-12-21 15:29:01,292 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:29:01" (1/1) ... [2021-12-21 15:29:01,347 INFO L137 Inliner]: procedures = 691, calls = 1682, calls flagged for inlining = 52, calls inlined = 8, statements flattened = 649 [2021-12-21 15:29:01,347 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 15:29:01,348 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 15:29:01,348 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 15:29:01,348 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 15:29:01,354 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:29:01" (1/1) ... [2021-12-21 15:29:01,354 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:29:01" (1/1) ... [2021-12-21 15:29:01,364 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:29:01" (1/1) ... [2021-12-21 15:29:01,365 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:29:01" (1/1) ... [2021-12-21 15:29:01,389 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:29:01" (1/1) ... [2021-12-21 15:29:01,392 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:29:01" (1/1) ... [2021-12-21 15:29:01,396 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:29:01" (1/1) ... [2021-12-21 15:29:01,402 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 15:29:01,403 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 15:29:01,403 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 15:29:01,403 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 15:29:01,419 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:29:01" (1/1) ... [2021-12-21 15:29:01,427 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 15:29:01,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:29:01,446 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-21 15:29:01,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-21 15:29:01,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 15:29:01,495 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2021-12-21 15:29:01,495 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2021-12-21 15:29:01,496 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2021-12-21 15:29:01,496 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2021-12-21 15:29:01,496 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-12-21 15:29:01,496 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-12-21 15:29:01,496 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-21 15:29:01,496 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-12-21 15:29:01,496 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-12-21 15:29:01,497 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-21 15:29:01,497 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-21 15:29:01,497 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-21 15:29:01,497 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 15:29:01,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-21 15:29:01,497 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2021-12-21 15:29:01,497 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2021-12-21 15:29:01,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 15:29:01,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 15:29:01,498 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-21 15:29:01,498 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-21 15:29:01,499 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-12-21 15:29:01,499 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-12-21 15:29:01,499 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2021-12-21 15:29:01,499 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2021-12-21 15:29:01,499 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-21 15:29:01,499 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-21 15:29:01,499 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2021-12-21 15:29:01,500 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2021-12-21 15:29:01,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-21 15:29:01,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-21 15:29:01,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-21 15:29:01,500 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2021-12-21 15:29:01,500 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2021-12-21 15:29:01,500 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-12-21 15:29:01,501 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-12-21 15:29:01,501 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-12-21 15:29:01,501 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-12-21 15:29:01,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-21 15:29:01,501 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2021-12-21 15:29:01,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2021-12-21 15:29:01,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 15:29:01,722 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 15:29:01,723 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 15:29:02,201 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 15:29:02,208 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 15:29:02,208 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-21 15:29:02,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 03:29:02 BoogieIcfgContainer [2021-12-21 15:29:02,209 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 15:29:02,210 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 15:29:02,210 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 15:29:02,213 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 15:29:02,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 03:28:59" (1/3) ... [2021-12-21 15:29:02,214 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@467ce99c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 03:29:02, skipping insertion in model container [2021-12-21 15:29:02,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:29:01" (2/3) ... [2021-12-21 15:29:02,214 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@467ce99c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 03:29:02, skipping insertion in model container [2021-12-21 15:29:02,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 03:29:02" (3/3) ... [2021-12-21 15:29:02,216 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_list_swap_harness.i [2021-12-21 15:29:02,219 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 15:29:02,219 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 15:29:02,258 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 15:29:02,273 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-21 15:29:02,273 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 15:29:02,293 INFO L276 IsEmpty]: Start isEmpty. Operand has 180 states, 102 states have (on average 1.1666666666666667) internal successors, (119), 103 states have internal predecessors, (119), 61 states have call successors, (61), 15 states have call predecessors, (61), 15 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2021-12-21 15:29:02,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-12-21 15:29:02,300 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:29:02,301 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:29:02,302 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:29:02,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:29:02,305 INFO L85 PathProgramCache]: Analyzing trace with hash 223694820, now seen corresponding path program 1 times [2021-12-21 15:29:02,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:29:02,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939239595] [2021-12-21 15:29:02,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:29:02,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:29:02,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:02,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:29:02,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:02,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 15:29:02,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:02,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 15:29:02,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:02,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:29:02,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:02,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 15:29:02,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:02,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-21 15:29:02,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:02,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-21 15:29:02,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:02,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-21 15:29:02,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:02,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-21 15:29:02,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:02,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-21 15:29:02,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:02,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-21 15:29:02,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:02,832 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-12-21 15:29:02,833 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:29:02,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939239595] [2021-12-21 15:29:02,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939239595] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:29:02,834 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:29:02,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 15:29:02,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639243247] [2021-12-21 15:29:02,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:29:02,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 15:29:02,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:29:02,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 15:29:02,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-21 15:29:02,861 INFO L87 Difference]: Start difference. First operand has 180 states, 102 states have (on average 1.1666666666666667) internal successors, (119), 103 states have internal predecessors, (119), 61 states have call successors, (61), 15 states have call predecessors, (61), 15 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-21 15:29:03,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:29:03,371 INFO L93 Difference]: Finished difference Result 380 states and 580 transitions. [2021-12-21 15:29:03,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-21 15:29:03,373 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 69 [2021-12-21 15:29:03,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:29:03,385 INFO L225 Difference]: With dead ends: 380 [2021-12-21 15:29:03,385 INFO L226 Difference]: Without dead ends: 202 [2021-12-21 15:29:03,397 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-21 15:29:03,401 INFO L933 BasicCegarLoop]: 227 mSDtfsCounter, 50 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-21 15:29:03,401 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 332 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-21 15:29:03,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-12-21 15:29:03,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 175. [2021-12-21 15:29:03,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 98 states have (on average 1.1428571428571428) internal successors, (112), 99 states have internal predecessors, (112), 61 states have call successors, (61), 15 states have call predecessors, (61), 15 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2021-12-21 15:29:03,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 233 transitions. [2021-12-21 15:29:03,461 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 233 transitions. Word has length 69 [2021-12-21 15:29:03,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:29:03,461 INFO L470 AbstractCegarLoop]: Abstraction has 175 states and 233 transitions. [2021-12-21 15:29:03,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-21 15:29:03,461 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 233 transitions. [2021-12-21 15:29:03,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-12-21 15:29:03,463 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:29:03,463 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:29:03,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 15:29:03,464 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:29:03,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:29:03,464 INFO L85 PathProgramCache]: Analyzing trace with hash -636522710, now seen corresponding path program 1 times [2021-12-21 15:29:03,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:29:03,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92066127] [2021-12-21 15:29:03,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:29:03,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:29:03,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:03,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:29:03,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:03,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 15:29:03,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:03,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 15:29:03,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:03,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:29:03,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:03,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 15:29:03,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:03,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-21 15:29:03,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:03,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-21 15:29:03,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:03,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-21 15:29:03,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:03,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-21 15:29:03,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:03,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-21 15:29:03,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:03,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-21 15:29:03,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:03,736 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-12-21 15:29:03,736 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:29:03,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92066127] [2021-12-21 15:29:03,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92066127] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:29:03,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239911256] [2021-12-21 15:29:03,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:29:03,737 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:29:03,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:29:03,738 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:29:03,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-21 15:29:04,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:04,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 1999 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-21 15:29:04,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:29:04,224 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-12-21 15:29:04,224 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:29:04,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239911256] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:29:04,224 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 15:29:04,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2021-12-21 15:29:04,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100766981] [2021-12-21 15:29:04,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:29:04,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 15:29:04,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:29:04,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 15:29:04,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-21 15:29:04,227 INFO L87 Difference]: Start difference. First operand 175 states and 233 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-21 15:29:04,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:29:04,441 INFO L93 Difference]: Finished difference Result 315 states and 432 transitions. [2021-12-21 15:29:04,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 15:29:04,441 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 69 [2021-12-21 15:29:04,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:29:04,444 INFO L225 Difference]: With dead ends: 315 [2021-12-21 15:29:04,444 INFO L226 Difference]: Without dead ends: 177 [2021-12-21 15:29:04,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-12-21 15:29:04,446 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 232 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 15:29:04,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 661 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 15:29:04,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-12-21 15:29:04,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2021-12-21 15:29:04,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 99 states have (on average 1.1414141414141414) internal successors, (113), 101 states have internal predecessors, (113), 61 states have call successors, (61), 15 states have call predecessors, (61), 16 states have return successors, (68), 60 states have call predecessors, (68), 60 states have call successors, (68) [2021-12-21 15:29:04,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 242 transitions. [2021-12-21 15:29:04,463 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 242 transitions. Word has length 69 [2021-12-21 15:29:04,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:29:04,463 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 242 transitions. [2021-12-21 15:29:04,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-21 15:29:04,464 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 242 transitions. [2021-12-21 15:29:04,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-12-21 15:29:04,467 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:29:04,467 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 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] [2021-12-21 15:29:04,487 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-21 15:29:04,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:29:04,680 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:29:04,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:29:04,680 INFO L85 PathProgramCache]: Analyzing trace with hash -164009474, now seen corresponding path program 1 times [2021-12-21 15:29:04,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:29:04,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445220093] [2021-12-21 15:29:04,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:29:04,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:29:04,727 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 15:29:04,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1616864788] [2021-12-21 15:29:04,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:29:04,728 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:29:04,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:29:04,729 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:29:04,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-21 15:29:05,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:05,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 2140 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-21 15:29:05,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:29:05,186 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-12-21 15:29:05,186 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:29:05,186 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:29:05,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445220093] [2021-12-21 15:29:05,187 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 15:29:05,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616864788] [2021-12-21 15:29:05,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616864788] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:29:05,189 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:29:05,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 15:29:05,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463559849] [2021-12-21 15:29:05,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:29:05,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 15:29:05,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:29:05,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 15:29:05,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-21 15:29:05,191 INFO L87 Difference]: Start difference. First operand 177 states and 242 transitions. Second operand has 8 states, 8 states have (on average 5.875) internal successors, (47), 7 states have internal predecessors, (47), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2021-12-21 15:29:05,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:29:05,511 INFO L93 Difference]: Finished difference Result 326 states and 455 transitions. [2021-12-21 15:29:05,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 15:29:05,512 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 7 states have internal predecessors, (47), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 84 [2021-12-21 15:29:05,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:29:05,514 INFO L225 Difference]: With dead ends: 326 [2021-12-21 15:29:05,514 INFO L226 Difference]: Without dead ends: 189 [2021-12-21 15:29:05,514 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-12-21 15:29:05,515 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 250 mSDsluCounter, 823 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 998 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-21 15:29:05,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [260 Valid, 998 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-21 15:29:05,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2021-12-21 15:29:05,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2021-12-21 15:29:05,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 105 states have (on average 1.1428571428571428) internal successors, (120), 107 states have internal predecessors, (120), 66 states have call successors, (66), 16 states have call predecessors, (66), 17 states have return successors, (73), 65 states have call predecessors, (73), 65 states have call successors, (73) [2021-12-21 15:29:05,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 259 transitions. [2021-12-21 15:29:05,528 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 259 transitions. Word has length 84 [2021-12-21 15:29:05,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:29:05,529 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 259 transitions. [2021-12-21 15:29:05,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 7 states have internal predecessors, (47), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2021-12-21 15:29:05,529 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 259 transitions. [2021-12-21 15:29:05,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-12-21 15:29:05,531 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:29:05,531 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:29:05,558 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-21 15:29:05,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-12-21 15:29:05,744 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:29:05,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:29:05,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1494755288, now seen corresponding path program 1 times [2021-12-21 15:29:05,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:29:05,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997484715] [2021-12-21 15:29:05,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:29:05,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:29:05,783 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 15:29:05,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [351718278] [2021-12-21 15:29:05,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:29:05,784 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:29:05,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:29:05,800 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:29:05,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-21 15:29:06,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:06,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 2422 conjuncts, 252 conjunts are in the unsatisfiable core [2021-12-21 15:29:06,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:29:06,227 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-21 15:29:06,375 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-21 15:29:07,493 INFO L353 Elim1Store]: treesize reduction 53, result has 32.9 percent of original size [2021-12-21 15:29:07,493 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 53 [2021-12-21 15:29:07,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:29:07,502 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 28 [2021-12-21 15:29:09,793 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_200 Int)) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_200)) |c_#memory_int|)) is different from true [2021-12-21 15:29:10,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:29:11,926 INFO L353 Elim1Store]: treesize reduction 12, result has 62.5 percent of original size [2021-12-21 15:29:11,927 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 60 treesize of output 68 [2021-12-21 15:29:11,940 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-21 15:29:11,940 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 11 treesize of output 11 [2021-12-21 15:29:32,843 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 15:29:32,843 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 156 treesize of output 88 [2021-12-21 15:29:33,329 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 26 proven. 59 refuted. 0 times theorem prover too weak. 6 trivial. 6 not checked. [2021-12-21 15:29:33,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 15:29:49,013 WARN L227 SmtUtils]: Spent 7.22s on a formula simplification that was a NOOP. DAG size: 87 (called from [L 232] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-12-21 15:29:55,215 WARN L227 SmtUtils]: Spent 6.20s on a formula simplification that was a NOOP. DAG size: 85 (called from [L 269] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-12-21 15:30:06,520 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:30:06,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997484715] [2021-12-21 15:30:06,520 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 15:30:06,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351718278] [2021-12-21 15:30:06,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [351718278] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:30:06,520 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-21 15:30:06,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2021-12-21 15:30:06,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301630649] [2021-12-21 15:30:06,520 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-21 15:30:06,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2021-12-21 15:30:06,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:30:06,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-12-21 15:30:06,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=2674, Unknown=6, NotChecked=104, Total=2970 [2021-12-21 15:30:06,522 INFO L87 Difference]: Start difference. First operand 189 states and 259 transitions. Second operand has 51 states, 43 states have (on average 1.744186046511628) internal successors, (75), 38 states have internal predecessors, (75), 15 states have call successors, (19), 10 states have call predecessors, (19), 13 states have return successors, (17), 14 states have call predecessors, (17), 13 states have call successors, (17)