./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_array_list_length_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_length_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 53c422310795c2e7f5b0f72e5a73eee871aa1645d7b73c98001e28d2bf239333 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 15:28:05,481 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 15:28:05,488 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 15:28:05,535 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 15:28:05,537 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 15:28:05,540 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 15:28:05,542 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 15:28:05,545 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 15:28:05,547 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 15:28:05,549 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 15:28:05,550 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 15:28:05,552 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 15:28:05,552 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 15:28:05,557 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 15:28:05,558 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 15:28:05,560 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 15:28:05,561 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 15:28:05,562 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 15:28:05,563 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 15:28:05,567 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 15:28:05,571 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 15:28:05,572 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 15:28:05,573 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 15:28:05,574 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 15:28:05,577 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 15:28:05,578 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 15:28:05,578 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 15:28:05,579 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 15:28:05,580 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 15:28:05,580 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 15:28:05,581 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 15:28:05,581 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 15:28:05,582 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 15:28:05,582 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 15:28:05,583 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 15:28:05,583 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 15:28:05,584 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 15:28:05,584 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 15:28:05,584 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 15:28:05,585 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 15:28:05,585 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 15:28:05,586 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-21 15:28:05,616 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 15:28:05,616 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 15:28:05,616 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 15:28:05,617 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 15:28:05,617 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 15:28:05,618 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 15:28:05,618 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 15:28:05,618 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 15:28:05,619 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 15:28:05,619 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 15:28:05,620 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 15:28:05,620 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 15:28:05,620 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 15:28:05,620 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 15:28:05,620 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 15:28:05,621 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 15:28:05,621 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 15:28:05,621 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 15:28:05,621 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 15:28:05,621 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 15:28:05,622 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 15:28:05,622 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 15:28:05,622 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 15:28:05,622 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 15:28:05,622 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 15:28:05,623 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 15:28:05,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 15:28:05,623 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 15:28:05,623 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 15:28:05,624 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 15:28:05,624 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 15:28:05,624 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 53c422310795c2e7f5b0f72e5a73eee871aa1645d7b73c98001e28d2bf239333 [2021-12-21 15:28:05,844 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 15:28:05,869 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 15:28:05,871 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 15:28:05,872 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 15:28:05,873 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 15:28:05,874 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_array_list_length_harness.i [2021-12-21 15:28:05,920 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af6dfde4e/c74b6b2cf8314f98be6cc298ea3e5842/FLAG852abc6d9 [2021-12-21 15:28:06,476 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 15:28:06,476 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_length_harness.i [2021-12-21 15:28:06,504 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af6dfde4e/c74b6b2cf8314f98be6cc298ea3e5842/FLAG852abc6d9 [2021-12-21 15:28:06,694 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af6dfde4e/c74b6b2cf8314f98be6cc298ea3e5842 [2021-12-21 15:28:06,698 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 15:28:06,699 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 15:28:06,701 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 15:28:06,701 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 15:28:06,704 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 15:28:06,705 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 03:28:06" (1/1) ... [2021-12-21 15:28:06,707 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59b360f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:28:06, skipping insertion in model container [2021-12-21 15:28:06,707 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 03:28:06" (1/1) ... [2021-12-21 15:28:06,713 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 15:28:06,794 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 15:28:07,026 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_length_harness.i[4495,4508] [2021-12-21 15:28:07,033 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_length_harness.i[4555,4568] [2021-12-21 15:28:07,572 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-21 15:28:07,641 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:28:07,641 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:28:07,642 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:28:07,642 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:28:07,643 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:28:07,659 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:28:07,661 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:28:07,663 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:28:07,664 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:28:07,666 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:28:07,666 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:28:07,668 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:28:07,668 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:28:07,870 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-21 15:28:07,872 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-21 15:28:07,872 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-21 15:28:07,873 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-21 15:28:07,874 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-21 15:28:07,877 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-21 15:28:07,877 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-21 15:28:07,878 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-21 15:28:07,879 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-21 15:28:07,879 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-21 15:28:07,958 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:28:07,962 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:28:08,004 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 15:28:08,043 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 15:28:08,065 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_length_harness.i[4495,4508] [2021-12-21 15:28:08,066 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_length_harness.i[4555,4568] [2021-12-21 15:28:08,093 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-21 15:28:08,115 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:28:08,116 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:28:08,116 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:28:08,116 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:28:08,117 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:28:08,121 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:28:08,121 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:28:08,122 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:28:08,122 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:28:08,139 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:28:08,140 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:28:08,140 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:28:08,141 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:28:08,168 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-21 15:28:08,169 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-21 15:28:08,169 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-21 15:28:08,170 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-21 15:28:08,170 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-21 15:28:08,171 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-21 15:28:08,182 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-21 15:28:08,182 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-21 15:28:08,183 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-21 15:28:08,183 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-21 15:28:08,222 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:28:08,227 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:28:08,257 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 15:28:08,444 INFO L208 MainTranslator]: Completed translation [2021-12-21 15:28:08,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:28:08 WrapperNode [2021-12-21 15:28:08,444 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 15:28:08,445 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 15:28:08,445 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 15:28:08,445 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 15:28:08,451 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:28:08" (1/1) ... [2021-12-21 15:28:08,532 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:28:08" (1/1) ... [2021-12-21 15:28:08,614 INFO L137 Inliner]: procedures = 690, calls = 1682, calls flagged for inlining = 52, calls inlined = 8, statements flattened = 591 [2021-12-21 15:28:08,615 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 15:28:08,616 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 15:28:08,616 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 15:28:08,616 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 15:28:08,623 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:28:08" (1/1) ... [2021-12-21 15:28:08,624 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:28:08" (1/1) ... [2021-12-21 15:28:08,638 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:28:08" (1/1) ... [2021-12-21 15:28:08,638 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:28:08" (1/1) ... [2021-12-21 15:28:08,676 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:28:08" (1/1) ... [2021-12-21 15:28:08,681 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:28:08" (1/1) ... [2021-12-21 15:28:08,689 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:28:08" (1/1) ... [2021-12-21 15:28:08,708 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 15:28:08,709 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 15:28:08,709 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 15:28:08,709 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 15:28:08,714 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:28:08" (1/1) ... [2021-12-21 15:28:08,720 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 15:28:08,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:28:08,745 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 15:28:08,766 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 15:28:08,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 15:28:08,780 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2021-12-21 15:28:08,780 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2021-12-21 15:28:08,781 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2021-12-21 15:28:08,781 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2021-12-21 15:28:08,782 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-12-21 15:28:08,782 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-12-21 15:28:08,783 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-21 15:28:08,783 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-12-21 15:28:08,783 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-12-21 15:28:08,783 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-21 15:28:08,783 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-21 15:28:08,784 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-21 15:28:08,784 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 15:28:08,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-21 15:28:08,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 15:28:08,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 15:28:08,784 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-21 15:28:08,784 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-21 15:28:08,785 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-12-21 15:28:08,785 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-12-21 15:28:08,785 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-12-21 15:28:08,785 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-12-21 15:28:08,786 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2021-12-21 15:28:08,786 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2021-12-21 15:28:08,787 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-21 15:28:08,788 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-21 15:28:08,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-21 15:28:08,788 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-21 15:28:08,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-21 15:28:08,788 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-12-21 15:28:08,789 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-12-21 15:28:08,789 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-12-21 15:28:08,789 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-12-21 15:28:08,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-21 15:28:08,789 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2021-12-21 15:28:08,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2021-12-21 15:28:08,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 15:28:09,051 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 15:28:09,053 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 15:28:09,823 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 15:28:09,829 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 15:28:09,829 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-21 15:28:09,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 03:28:09 BoogieIcfgContainer [2021-12-21 15:28:09,831 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 15:28:09,832 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 15:28:09,833 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 15:28:09,835 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 15:28:09,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 03:28:06" (1/3) ... [2021-12-21 15:28:09,836 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@581e1400 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 03:28:09, skipping insertion in model container [2021-12-21 15:28:09,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:28:08" (2/3) ... [2021-12-21 15:28:09,836 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@581e1400 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 03:28:09, skipping insertion in model container [2021-12-21 15:28:09,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 03:28:09" (3/3) ... [2021-12-21 15:28:09,838 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_list_length_harness.i [2021-12-21 15:28:09,841 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 15:28:09,842 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 15:28:09,886 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 15:28:09,894 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 15:28:09,894 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 15:28:09,921 INFO L276 IsEmpty]: Start isEmpty. Operand has 123 states, 78 states have (on average 1.205128205128205) internal successors, (94), 79 states have internal predecessors, (94), 30 states have call successors, (30), 13 states have call predecessors, (30), 13 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-12-21 15:28:09,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-12-21 15:28:09,931 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:28:09,931 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, 1, 1] [2021-12-21 15:28:09,932 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:28:09,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:28:09,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1468528252, now seen corresponding path program 1 times [2021-12-21 15:28:09,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:28:09,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884213712] [2021-12-21 15:28:09,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:28:09,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:28:10,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:28:10,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:28:10,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:28:10,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 15:28:10,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:28:10,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 15:28:10,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:28:10,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:28:10,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:28:10,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 15:28:10,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:28:10,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-21 15:28:10,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:28:10,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-21 15:28:10,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:28:10,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-21 15:28:10,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:28:10,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-21 15:28:10,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:28:10,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-21 15:28:10,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:28:10,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-21 15:28:10,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:28:10,630 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 15:28:10,631 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:28:10,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884213712] [2021-12-21 15:28:10,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884213712] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:28:10,632 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:28:10,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 15:28:10,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785931338] [2021-12-21 15:28:10,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:28:10,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 15:28:10,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:28:10,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 15:28:10,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-21 15:28:10,667 INFO L87 Difference]: Start difference. First operand has 123 states, 78 states have (on average 1.205128205128205) internal successors, (94), 79 states have internal predecessors, (94), 30 states have call successors, (30), 13 states have call predecessors, (30), 13 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (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 15:28:11,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:28:11,017 INFO L93 Difference]: Finished difference Result 248 states and 337 transitions. [2021-12-21 15:28:11,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-21 15:28:11,019 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (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 71 [2021-12-21 15:28:11,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:28:11,033 INFO L225 Difference]: With dead ends: 248 [2021-12-21 15:28:11,033 INFO L226 Difference]: Without dead ends: 123 [2021-12-21 15:28:11,039 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 15:28:11,042 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 40 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-21 15:28:11,045 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 191 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-21 15:28:11,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-12-21 15:28:11,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 114. [2021-12-21 15:28:11,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 71 states have (on average 1.1549295774647887) internal successors, (82), 72 states have internal predecessors, (82), 30 states have call successors, (30), 13 states have call predecessors, (30), 12 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-12-21 15:28:11,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 140 transitions. [2021-12-21 15:28:11,096 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 140 transitions. Word has length 71 [2021-12-21 15:28:11,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:28:11,096 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 140 transitions. [2021-12-21 15:28:11,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (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 15:28:11,097 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 140 transitions. [2021-12-21 15:28:11,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-12-21 15:28:11,099 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:28:11,099 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, 1, 1] [2021-12-21 15:28:11,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 15:28:11,100 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:28:11,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:28:11,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1288118090, now seen corresponding path program 1 times [2021-12-21 15:28:11,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:28:11,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106233394] [2021-12-21 15:28:11,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:28:11,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:28:11,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:28:11,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:28:11,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:28:11,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 15:28:11,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:28:11,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 15:28:11,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:28:11,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:28:11,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:28:11,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 15:28:11,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:28:11,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-21 15:28:11,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:28:11,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-21 15:28:11,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:28:11,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-21 15:28:11,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:28:11,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-21 15:28:11,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:28:11,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-21 15:28:11,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:28:11,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-21 15:28:11,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:28:11,459 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 15:28:11,459 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:28:11,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106233394] [2021-12-21 15:28:11,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106233394] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:28:11,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218189136] [2021-12-21 15:28:11,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:28:11,460 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:28:11,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:28:11,462 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 15:28:11,484 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 15:28:11,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:28:11,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 2064 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-21 15:28:11,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:28:12,076 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 15:28:12,076 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:28:12,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [218189136] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:28:12,077 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 15:28:12,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2021-12-21 15:28:12,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385421127] [2021-12-21 15:28:12,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:28:12,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 15:28:12,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:28:12,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 15:28:12,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-21 15:28:12,081 INFO L87 Difference]: Start difference. First operand 114 states and 140 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 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 15:28:12,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:28:12,231 INFO L93 Difference]: Finished difference Result 193 states and 240 transitions. [2021-12-21 15:28:12,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 15:28:12,232 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 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 71 [2021-12-21 15:28:12,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:28:12,234 INFO L225 Difference]: With dead ends: 193 [2021-12-21 15:28:12,234 INFO L226 Difference]: Without dead ends: 116 [2021-12-21 15:28:12,237 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 87 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 15:28:12,240 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 149 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 15:28:12,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 414 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 15:28:12,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-12-21 15:28:12,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2021-12-21 15:28:12,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 72 states have (on average 1.1527777777777777) internal successors, (83), 74 states have internal predecessors, (83), 30 states have call successors, (30), 13 states have call predecessors, (30), 13 states have return successors, (30), 28 states have call predecessors, (30), 28 states have call successors, (30) [2021-12-21 15:28:12,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 143 transitions. [2021-12-21 15:28:12,266 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 143 transitions. Word has length 71 [2021-12-21 15:28:12,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:28:12,267 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 143 transitions. [2021-12-21 15:28:12,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 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 15:28:12,268 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 143 transitions. [2021-12-21 15:28:12,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-12-21 15:28:12,274 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:28:12,275 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, 1, 1] [2021-12-21 15:28:12,305 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 15:28:12,498 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 15:28:12,498 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:28:12,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:28:12,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1724800482, now seen corresponding path program 1 times [2021-12-21 15:28:12,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:28:12,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157923626] [2021-12-21 15:28:12,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:28:12,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:28:12,568 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 15:28:12,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1704847700] [2021-12-21 15:28:12,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:28:12,570 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:28:12,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:28:12,572 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 15:28:12,573 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 15:28:12,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:28:12,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 2205 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-21 15:28:12,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:28:13,154 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 15:28:13,154 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:28:13,154 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:28:13,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157923626] [2021-12-21 15:28:13,155 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 15:28:13,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704847700] [2021-12-21 15:28:13,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1704847700] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:28:13,157 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:28:13,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 15:28:13,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978576487] [2021-12-21 15:28:13,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:28:13,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 15:28:13,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:28:13,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 15:28:13,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-21 15:28:13,159 INFO L87 Difference]: Start difference. First operand 116 states and 143 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 7 states have internal predecessors, (49), 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 15:28:13,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:28:13,365 INFO L93 Difference]: Finished difference Result 182 states and 221 transitions. [2021-12-21 15:28:13,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 15:28:13,365 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 7 states have internal predecessors, (49), 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 86 [2021-12-21 15:28:13,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:28:13,367 INFO L225 Difference]: With dead ends: 182 [2021-12-21 15:28:13,367 INFO L226 Difference]: Without dead ends: 114 [2021-12-21 15:28:13,367 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-12-21 15:28:13,368 INFO L933 BasicCegarLoop]: 105 mSDtfsCounter, 151 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 15:28:13,369 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 591 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 15:28:13,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-12-21 15:28:13,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2021-12-21 15:28:13,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 71 states have (on average 1.1408450704225352) internal successors, (81), 72 states have internal predecessors, (81), 30 states have call successors, (30), 13 states have call predecessors, (30), 12 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-12-21 15:28:13,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 139 transitions. [2021-12-21 15:28:13,381 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 139 transitions. Word has length 86 [2021-12-21 15:28:13,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:28:13,382 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 139 transitions. [2021-12-21 15:28:13,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 7 states have internal predecessors, (49), 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 15:28:13,382 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 139 transitions. [2021-12-21 15:28:13,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-12-21 15:28:13,385 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:28:13,385 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, 1, 1] [2021-12-21 15:28:13,415 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 15:28:13,600 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 15:28:13,601 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:28:13,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:28:13,601 INFO L85 PathProgramCache]: Analyzing trace with hash -146566572, now seen corresponding path program 1 times [2021-12-21 15:28:13,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:28:13,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964482598] [2021-12-21 15:28:13,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:28:13,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:28:13,653 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 15:28:13,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [515633478] [2021-12-21 15:28:13,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:28:13,654 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:28:13,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:28:13,655 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 15:28:13,656 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 15:28:14,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:28:14,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 2487 conjuncts, 242 conjunts are in the unsatisfiable core [2021-12-21 15:28:14,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:28:14,273 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 15:28:14,480 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 15:28:22,301 INFO L353 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2021-12-21 15:28:22,301 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 32 treesize of output 37 [2021-12-21 15:28:22,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:28:22,313 INFO L387 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 25 treesize of output 28 [2021-12-21 15:28:34,656 INFO L353 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2021-12-21 15:28:34,656 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 29 treesize of output 37 [2021-12-21 15:28:42,080 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_237 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_237)) |c_#memory_int|)) is different from true [2021-12-21 15:28:50,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:28:50,699 INFO L353 Elim1Store]: treesize reduction 12, result has 62.5 percent of original size [2021-12-21 15:28:50,699 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 70 treesize of output 74 [2021-12-21 15:28:50,883 INFO L353 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-12-21 15:28:50,883 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2021-12-21 15:29:13,070 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 15:29:13,071 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 15:29:15,461 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 26 proven. 60 refuted. 0 times theorem prover too weak. 5 trivial. 6 not checked. [2021-12-21 15:29:15,462 INFO L328 TraceCheckSpWp]: Computing backward predicates...