./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/memcpy_using_uint64_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b 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/memcpy_using_uint64_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 d67b4b463cf9b59771b705723a66a102d698cbc5859334aa26ed48a8838f7285 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 17:10:03,636 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 17:10:03,638 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 17:10:03,662 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 17:10:03,663 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 17:10:03,664 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 17:10:03,665 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 17:10:03,667 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 17:10:03,669 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 17:10:03,669 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 17:10:03,670 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 17:10:03,671 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 17:10:03,672 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 17:10:03,672 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 17:10:03,674 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 17:10:03,675 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 17:10:03,675 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 17:10:03,676 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 17:10:03,678 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 17:10:03,679 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 17:10:03,680 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 17:10:03,683 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 17:10:03,684 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 17:10:03,685 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 17:10:03,687 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 17:10:03,688 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 17:10:03,688 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 17:10:03,689 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 17:10:03,689 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 17:10:03,690 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 17:10:03,690 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 17:10:03,691 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 17:10:03,691 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 17:10:03,692 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 17:10:03,693 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 17:10:03,693 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 17:10:03,694 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 17:10:03,694 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 17:10:03,694 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 17:10:03,695 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 17:10:03,696 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 17:10:03,697 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-14 17:10:03,722 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 17:10:03,723 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 17:10:03,723 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 17:10:03,723 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 17:10:03,724 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 17:10:03,724 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 17:10:03,725 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 17:10:03,725 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 17:10:03,725 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 17:10:03,725 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 17:10:03,725 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 17:10:03,726 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 17:10:03,726 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 17:10:03,726 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 17:10:03,726 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 17:10:03,727 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 17:10:03,727 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 17:10:03,730 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 17:10:03,730 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 17:10:03,731 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 17:10:03,731 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 17:10:03,732 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:10:03,732 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 17:10:03,736 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 17:10:03,736 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 17:10:03,736 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 17:10:03,737 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 17:10:03,737 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 17:10:03,738 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 17:10:03,738 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 17:10:03,738 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 17:10:03,738 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d67b4b463cf9b59771b705723a66a102d698cbc5859334aa26ed48a8838f7285 [2021-12-14 17:10:03,936 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 17:10:03,956 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 17:10:03,959 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 17:10:03,960 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 17:10:03,961 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 17:10:03,962 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/memcpy_using_uint64_harness.i [2021-12-14 17:10:04,017 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87b70bcd5/b394b5ffbd784cc998ae6b9ffff3652a/FLAG8fab9136b [2021-12-14 17:10:04,600 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 17:10:04,600 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/memcpy_using_uint64_harness.i [2021-12-14 17:10:04,629 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87b70bcd5/b394b5ffbd784cc998ae6b9ffff3652a/FLAG8fab9136b [2021-12-14 17:10:04,796 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87b70bcd5/b394b5ffbd784cc998ae6b9ffff3652a [2021-12-14 17:10:04,800 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 17:10:04,801 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 17:10:04,803 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 17:10:04,803 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 17:10:04,806 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 17:10:04,806 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:10:04" (1/1) ... [2021-12-14 17:10:04,808 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cdc2ca5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:10:04, skipping insertion in model container [2021-12-14 17:10:04,808 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:10:04" (1/1) ... [2021-12-14 17:10:04,815 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 17:10:04,889 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 17:10:05,103 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/memcpy_using_uint64_harness.i[4531,4544] [2021-12-14 17:10:05,109 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/memcpy_using_uint64_harness.i[4591,4604] [2021-12-14 17:10:05,584 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:05,587 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:05,588 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:05,589 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:05,591 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:05,602 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:05,602 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:05,603 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:05,604 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:05,605 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:05,606 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:05,607 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:05,607 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:05,711 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-14 17:10:05,712 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-14 17:10:05,713 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-14 17:10:05,714 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-14 17:10:05,716 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-14 17:10:05,716 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-14 17:10:05,717 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-14 17:10:05,717 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-14 17:10:05,718 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-14 17:10:05,718 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-14 17:10:05,782 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:10:05,793 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 17:10:05,823 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/memcpy_using_uint64_harness.i[4531,4544] [2021-12-14 17:10:05,824 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/memcpy_using_uint64_harness.i[4591,4604] [2021-12-14 17:10:05,884 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:05,891 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:05,892 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:05,892 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:05,893 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:05,898 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:05,900 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:05,902 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:05,903 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:05,904 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:05,904 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:05,905 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:05,905 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:05,920 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-14 17:10:05,921 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-14 17:10:05,922 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-14 17:10:05,922 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-14 17:10:05,923 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-14 17:10:05,924 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-14 17:10:05,924 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-14 17:10:05,924 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-14 17:10:05,925 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-14 17:10:05,925 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-14 17:10:05,959 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:10:06,088 INFO L208 MainTranslator]: Completed translation [2021-12-14 17:10:06,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:10:06 WrapperNode [2021-12-14 17:10:06,089 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 17:10:06,090 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 17:10:06,090 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 17:10:06,090 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 17:10:06,097 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:10:06" (1/1) ... [2021-12-14 17:10:06,162 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:10:06" (1/1) ... [2021-12-14 17:10:06,206 INFO L137 Inliner]: procedures = 593, calls = 627, calls flagged for inlining = 39, calls inlined = 6, statements flattened = 137 [2021-12-14 17:10:06,207 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 17:10:06,208 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 17:10:06,208 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 17:10:06,208 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 17:10:06,215 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:10:06" (1/1) ... [2021-12-14 17:10:06,216 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:10:06" (1/1) ... [2021-12-14 17:10:06,225 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:10:06" (1/1) ... [2021-12-14 17:10:06,226 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:10:06" (1/1) ... [2021-12-14 17:10:06,240 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:10:06" (1/1) ... [2021-12-14 17:10:06,254 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:10:06" (1/1) ... [2021-12-14 17:10:06,259 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:10:06" (1/1) ... [2021-12-14 17:10:06,264 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 17:10:06,264 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 17:10:06,265 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 17:10:06,265 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 17:10:06,270 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:10:06" (1/1) ... [2021-12-14 17:10:06,281 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:10:06,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:10:06,313 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) [2021-12-14 17:10:06,324 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 [2021-12-14 17:10:06,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 17:10:06,350 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-14 17:10:06,351 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-14 17:10:06,351 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-14 17:10:06,351 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 17:10:06,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 17:10:06,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 17:10:06,352 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-14 17:10:06,352 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-14 17:10:06,353 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 17:10:06,353 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-12-14 17:10:06,354 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-12-14 17:10:06,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-14 17:10:06,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 17:10:06,549 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 17:10:06,550 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 17:10:06,753 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 17:10:06,766 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 17:10:06,766 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-12-14 17:10:06,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:10:06 BoogieIcfgContainer [2021-12-14 17:10:06,768 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 17:10:06,769 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 17:10:06,769 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 17:10:06,772 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 17:10:06,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:10:04" (1/3) ... [2021-12-14 17:10:06,773 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71a95b0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:10:06, skipping insertion in model container [2021-12-14 17:10:06,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:10:06" (2/3) ... [2021-12-14 17:10:06,773 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71a95b0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:10:06, skipping insertion in model container [2021-12-14 17:10:06,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:10:06" (3/3) ... [2021-12-14 17:10:06,774 INFO L111 eAbstractionObserver]: Analyzing ICFG memcpy_using_uint64_harness.i [2021-12-14 17:10:06,778 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 17:10:06,778 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 17:10:06,815 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 17:10:06,820 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 [2021-12-14 17:10:06,820 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 17:10:06,838 INFO L276 IsEmpty]: Start isEmpty. Operand has 63 states, 47 states have (on average 1.3617021276595744) internal successors, (64), 48 states have internal predecessors, (64), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-14 17:10:06,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-14 17:10:06,845 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:10:06,845 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:10:06,846 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:10:06,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:10:06,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1463681059, now seen corresponding path program 1 times [2021-12-14 17:10:06,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:10:06,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461096186] [2021-12-14 17:10:06,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:10:06,858 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:10:07,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:07,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 17:10:07,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:07,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-14 17:10:07,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:07,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-14 17:10:07,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:07,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 17:10:07,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:07,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-14 17:10:07,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:07,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 17:10:07,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:07,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-14 17:10:07,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:07,312 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-12-14 17:10:07,312 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:10:07,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461096186] [2021-12-14 17:10:07,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461096186] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:10:07,313 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:10:07,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-14 17:10:07,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459474374] [2021-12-14 17:10:07,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:10:07,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-14 17:10:07,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:10:07,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-14 17:10:07,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-14 17:10:07,356 INFO L87 Difference]: Start difference. First operand has 63 states, 47 states have (on average 1.3617021276595744) internal successors, (64), 48 states have internal predecessors, (64), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 1 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-14 17:10:07,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:10:07,387 INFO L93 Difference]: Finished difference Result 122 states and 176 transitions. [2021-12-14 17:10:07,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-14 17:10:07,389 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 1 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 66 [2021-12-14 17:10:07,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:10:07,396 INFO L225 Difference]: With dead ends: 122 [2021-12-14 17:10:07,401 INFO L226 Difference]: Without dead ends: 57 [2021-12-14 17:10:07,405 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-14 17:10:07,409 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:10:07,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 17:10:07,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-12-14 17:10:07,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2021-12-14 17:10:07,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 42 states have (on average 1.2619047619047619) internal successors, (53), 43 states have internal predecessors, (53), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-12-14 17:10:07,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 74 transitions. [2021-12-14 17:10:07,460 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 74 transitions. Word has length 66 [2021-12-14 17:10:07,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:10:07,460 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 74 transitions. [2021-12-14 17:10:07,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 1 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-14 17:10:07,461 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 74 transitions. [2021-12-14 17:10:07,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-14 17:10:07,466 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:10:07,466 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:10:07,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 17:10:07,467 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:10:07,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:10:07,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1147031271, now seen corresponding path program 1 times [2021-12-14 17:10:07,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:10:07,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736004330] [2021-12-14 17:10:07,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:10:07,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:10:07,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:07,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 17:10:07,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:07,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-14 17:10:07,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:07,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-14 17:10:07,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:07,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 17:10:07,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:07,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-14 17:10:07,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:07,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 17:10:07,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:07,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-14 17:10:07,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:07,669 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-12-14 17:10:07,669 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:10:07,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736004330] [2021-12-14 17:10:07,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736004330] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:10:07,670 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:10:07,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 17:10:07,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738591420] [2021-12-14 17:10:07,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:10:07,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 17:10:07,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:10:07,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 17:10:07,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 17:10:07,674 INFO L87 Difference]: Start difference. First operand 57 states and 74 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-14 17:10:07,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:10:07,705 INFO L93 Difference]: Finished difference Result 112 states and 146 transitions. [2021-12-14 17:10:07,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 17:10:07,706 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 66 [2021-12-14 17:10:07,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:10:07,709 INFO L225 Difference]: With dead ends: 112 [2021-12-14 17:10:07,709 INFO L226 Difference]: Without dead ends: 59 [2021-12-14 17:10:07,712 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 17:10:07,713 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 1 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:10:07,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 142 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 17:10:07,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-12-14 17:10:07,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2021-12-14 17:10:07,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 43 states have (on average 1.255813953488372) internal successors, (54), 44 states have internal predecessors, (54), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-12-14 17:10:07,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 75 transitions. [2021-12-14 17:10:07,721 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 75 transitions. Word has length 66 [2021-12-14 17:10:07,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:10:07,721 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 75 transitions. [2021-12-14 17:10:07,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-14 17:10:07,722 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 75 transitions. [2021-12-14 17:10:07,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-14 17:10:07,723 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:10:07,723 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:10:07,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 17:10:07,723 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:10:07,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:10:07,724 INFO L85 PathProgramCache]: Analyzing trace with hash 824593321, now seen corresponding path program 1 times [2021-12-14 17:10:07,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:10:07,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178952646] [2021-12-14 17:10:07,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:10:07,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:10:07,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:07,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:10:07,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:07,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 17:10:07,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:07,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 17:10:07,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:07,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 17:10:07,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:07,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-14 17:10:07,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:07,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-14 17:10:07,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:07,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-14 17:10:07,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:07,889 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-12-14 17:10:07,890 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:10:07,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178952646] [2021-12-14 17:10:07,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178952646] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:10:07,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447269138] [2021-12-14 17:10:07,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:10:07,891 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:10:07,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:10:07,893 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) [2021-12-14 17:10:07,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-14 17:10:08,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:08,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-14 17:10:08,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:10:08,214 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-12-14 17:10:08,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 17:10:08,337 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-12-14 17:10:08,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447269138] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 17:10:08,338 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 17:10:08,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-12-14 17:10:08,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650554332] [2021-12-14 17:10:08,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 17:10:08,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 17:10:08,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:10:08,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 17:10:08,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-12-14 17:10:08,341 INFO L87 Difference]: Start difference. First operand 58 states and 75 transitions. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 1 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2021-12-14 17:10:08,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:10:08,368 INFO L93 Difference]: Finished difference Result 117 states and 153 transitions. [2021-12-14 17:10:08,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 17:10:08,369 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 1 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 68 [2021-12-14 17:10:08,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:10:08,370 INFO L225 Difference]: With dead ends: 117 [2021-12-14 17:10:08,370 INFO L226 Difference]: Without dead ends: 64 [2021-12-14 17:10:08,371 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-12-14 17:10:08,372 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 6 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:10:08,372 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 212 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 17:10:08,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-12-14 17:10:08,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-12-14 17:10:08,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 49 states have (on average 1.2244897959183674) internal successors, (60), 50 states have internal predecessors, (60), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-12-14 17:10:08,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 81 transitions. [2021-12-14 17:10:08,379 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 81 transitions. Word has length 68 [2021-12-14 17:10:08,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:10:08,379 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 81 transitions. [2021-12-14 17:10:08,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 1 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2021-12-14 17:10:08,379 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 81 transitions. [2021-12-14 17:10:08,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-12-14 17:10:08,380 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:10:08,380 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:10:08,401 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-14 17:10:08,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:10:08,592 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:10:08,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:10:08,592 INFO L85 PathProgramCache]: Analyzing trace with hash -615657745, now seen corresponding path program 2 times [2021-12-14 17:10:08,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:10:08,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761038055] [2021-12-14 17:10:08,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:10:08,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:10:08,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:08,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 17:10:08,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:08,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 17:10:08,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:08,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-14 17:10:08,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:08,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-14 17:10:08,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:08,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-14 17:10:08,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:08,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-14 17:10:08,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:08,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-14 17:10:08,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:08,781 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-12-14 17:10:08,781 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:10:08,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761038055] [2021-12-14 17:10:08,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761038055] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:10:08,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1849580871] [2021-12-14 17:10:08,783 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-14 17:10:08,783 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:10:08,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:10:08,785 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) [2021-12-14 17:10:08,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-14 17:10:08,990 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-14 17:10:08,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-14 17:10:08,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-14 17:10:08,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:10:09,335 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-12-14 17:10:09,336 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:10:09,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1849580871] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:10:09,336 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 17:10:09,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-12-14 17:10:09,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658060288] [2021-12-14 17:10:09,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:10:09,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 17:10:09,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:10:09,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 17:10:09,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-12-14 17:10:09,343 INFO L87 Difference]: Start difference. First operand 64 states and 81 transitions. Second operand has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-14 17:10:09,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:10:09,490 INFO L93 Difference]: Finished difference Result 70 states and 86 transitions. [2021-12-14 17:10:09,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 17:10:09,491 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 74 [2021-12-14 17:10:09,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:10:09,492 INFO L225 Difference]: With dead ends: 70 [2021-12-14 17:10:09,492 INFO L226 Difference]: Without dead ends: 66 [2021-12-14 17:10:09,493 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2021-12-14 17:10:09,494 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 87 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 17:10:09,494 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 241 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 17:10:09,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-12-14 17:10:09,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2021-12-14 17:10:09,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 51 states have (on average 1.196078431372549) internal successors, (61), 51 states have internal predecessors, (61), 11 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-12-14 17:10:09,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 82 transitions. [2021-12-14 17:10:09,504 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 82 transitions. Word has length 74 [2021-12-14 17:10:09,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:10:09,506 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 82 transitions. [2021-12-14 17:10:09,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-14 17:10:09,506 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 82 transitions. [2021-12-14 17:10:09,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-14 17:10:09,507 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:10:09,508 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 4, 4, 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] [2021-12-14 17:10:09,540 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-14 17:10:09,731 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,SelfDestructingSolverStorable3 [2021-12-14 17:10:09,732 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:10:09,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:10:09,732 INFO L85 PathProgramCache]: Analyzing trace with hash -694003548, now seen corresponding path program 1 times [2021-12-14 17:10:09,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:10:09,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859944298] [2021-12-14 17:10:09,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:10:09,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:10:09,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:09,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 17:10:09,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:09,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 17:10:09,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:09,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-14 17:10:09,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:09,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-14 17:10:09,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:09,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-14 17:10:09,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:09,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-14 17:10:09,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:09,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-14 17:10:09,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:09,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-14 17:10:09,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:09,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-14 17:10:09,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:09,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-14 17:10:09,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:09,927 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-12-14 17:10:09,927 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:10:09,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859944298] [2021-12-14 17:10:09,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859944298] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:10:09,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871924514] [2021-12-14 17:10:09,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:10:09,928 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:10:09,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:10:09,929 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) [2021-12-14 17:10:09,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-14 17:10:10,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:10,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-14 17:10:10,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:10:10,268 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-12-14 17:10:10,269 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 17:10:10,486 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-12-14 17:10:10,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [871924514] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 17:10:10,487 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 17:10:10,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2021-12-14 17:10:10,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847639096] [2021-12-14 17:10:10,487 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 17:10:10,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-14 17:10:10,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:10:10,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-14 17:10:10,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-12-14 17:10:10,490 INFO L87 Difference]: Start difference. First operand 66 states and 82 transitions. Second operand has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 13 states have internal predecessors, (69), 1 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2021-12-14 17:10:10,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:10:10,535 INFO L93 Difference]: Finished difference Result 133 states and 170 transitions. [2021-12-14 17:10:10,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-14 17:10:10,535 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 13 states have internal predecessors, (69), 1 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 91 [2021-12-14 17:10:10,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:10:10,536 INFO L225 Difference]: With dead ends: 133 [2021-12-14 17:10:10,536 INFO L226 Difference]: Without dead ends: 78 [2021-12-14 17:10:10,537 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-12-14 17:10:10,538 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 10 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:10:10,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 352 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 17:10:10,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-12-14 17:10:10,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2021-12-14 17:10:10,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 63 states have (on average 1.1587301587301588) internal successors, (73), 63 states have internal predecessors, (73), 11 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-12-14 17:10:10,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 94 transitions. [2021-12-14 17:10:10,545 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 94 transitions. Word has length 91 [2021-12-14 17:10:10,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:10:10,545 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 94 transitions. [2021-12-14 17:10:10,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 13 states have internal predecessors, (69), 1 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2021-12-14 17:10:10,546 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 94 transitions. [2021-12-14 17:10:10,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-14 17:10:10,547 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:10:10,547 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 8, 8, 8, 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] [2021-12-14 17:10:10,571 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-14 17:10:10,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:10:10,763 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:10:10,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:10:10,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1419325160, now seen corresponding path program 2 times [2021-12-14 17:10:10,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:10:10,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897209166] [2021-12-14 17:10:10,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:10:10,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:10:10,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:10,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-14 17:10:10,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:10,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-14 17:10:10,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:10,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-14 17:10:10,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:10,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 17:10:10,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:10,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-14 17:10:10,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:10,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-14 17:10:10,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:11,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-14 17:10:11,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:11,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 17:10:11,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:11,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-14 17:10:11,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:11,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-14 17:10:11,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:11,030 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 2 proven. 100 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-12-14 17:10:11,030 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:10:11,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897209166] [2021-12-14 17:10:11,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897209166] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:10:11,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810825105] [2021-12-14 17:10:11,031 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-14 17:10:11,031 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:10:11,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:10:11,033 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 17:10:11,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-14 17:10:11,225 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-14 17:10:11,225 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-14 17:10:11,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 591 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-14 17:10:11,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:10:11,377 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-12-14 17:10:11,378 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 17:10:11,710 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 2 proven. 100 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-12-14 17:10:11,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [810825105] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 17:10:11,710 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 17:10:11,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2021-12-14 17:10:11,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810893515] [2021-12-14 17:10:11,710 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 17:10:11,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-14 17:10:11,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:10:11,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-14 17:10:11,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2021-12-14 17:10:11,712 INFO L87 Difference]: Start difference. First operand 78 states and 94 transitions. Second operand has 25 states, 25 states have (on average 3.72) internal successors, (93), 25 states have internal predecessors, (93), 1 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2021-12-14 17:10:11,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:10:11,784 INFO L93 Difference]: Finished difference Result 157 states and 200 transitions. [2021-12-14 17:10:11,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-14 17:10:11,785 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.72) internal successors, (93), 25 states have internal predecessors, (93), 1 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 103 [2021-12-14 17:10:11,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:10:11,786 INFO L225 Difference]: With dead ends: 157 [2021-12-14 17:10:11,786 INFO L226 Difference]: Without dead ends: 102 [2021-12-14 17:10:11,787 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2021-12-14 17:10:11,787 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 33 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 17:10:11,788 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 212 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 17:10:11,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-12-14 17:10:11,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2021-12-14 17:10:11,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 87 states have (on average 1.1149425287356323) internal successors, (97), 87 states have internal predecessors, (97), 11 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-12-14 17:10:11,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 118 transitions. [2021-12-14 17:10:11,795 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 118 transitions. Word has length 103 [2021-12-14 17:10:11,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:10:11,796 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 118 transitions. [2021-12-14 17:10:11,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.72) internal successors, (93), 25 states have internal predecessors, (93), 1 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2021-12-14 17:10:11,796 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 118 transitions. [2021-12-14 17:10:11,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-14 17:10:11,797 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:10:11,798 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 8, 8, 8, 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] [2021-12-14 17:10:11,825 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-14 17:10:12,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:10:12,019 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:10:12,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:10:12,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1263900672, now seen corresponding path program 3 times [2021-12-14 17:10:12,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:10:12,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870443521] [2021-12-14 17:10:12,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:10:12,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:10:12,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:12,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-14 17:10:12,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:12,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-14 17:10:12,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:12,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-14 17:10:12,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:12,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-14 17:10:12,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:12,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-14 17:10:12,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:12,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-14 17:10:12,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:12,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-14 17:10:12,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:12,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-14 17:10:12,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:12,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-14 17:10:12,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:12,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-14 17:10:12,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:12,512 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 2 proven. 484 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-12-14 17:10:12,513 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:10:12,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870443521] [2021-12-14 17:10:12,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870443521] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:10:12,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1026638731] [2021-12-14 17:10:12,513 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-14 17:10:12,513 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:10:12,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:10:12,515 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 17:10:12,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-14 17:10:14,715 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-12-14 17:10:14,715 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-14 17:10:14,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-14 17:10:14,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:10:15,108 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 568 trivial. 0 not checked. [2021-12-14 17:10:15,108 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:10:15,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1026638731] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:10:15,109 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 17:10:15,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [25] total 29 [2021-12-14 17:10:15,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541828533] [2021-12-14 17:10:15,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:10:15,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 17:10:15,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:10:15,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 17:10:15,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=309, Invalid=503, Unknown=0, NotChecked=0, Total=812 [2021-12-14 17:10:15,111 INFO L87 Difference]: Start difference. First operand 102 states and 118 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 5 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2021-12-14 17:10:15,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:10:15,244 INFO L93 Difference]: Finished difference Result 146 states and 174 transitions. [2021-12-14 17:10:15,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 17:10:15,244 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 5 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 127 [2021-12-14 17:10:15,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:10:15,245 INFO L225 Difference]: With dead ends: 146 [2021-12-14 17:10:15,245 INFO L226 Difference]: Without dead ends: 104 [2021-12-14 17:10:15,246 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=321, Invalid=609, Unknown=0, NotChecked=0, Total=930 [2021-12-14 17:10:15,247 INFO L933 BasicCegarLoop]: 101 mSDtfsCounter, 81 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 17:10:15,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 317 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 17:10:15,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-12-14 17:10:15,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 103. [2021-12-14 17:10:15,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 88 states have (on average 1.1136363636363635) internal successors, (98), 88 states have internal predecessors, (98), 11 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-12-14 17:10:15,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 119 transitions. [2021-12-14 17:10:15,255 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 119 transitions. Word has length 127 [2021-12-14 17:10:15,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:10:15,256 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 119 transitions. [2021-12-14 17:10:15,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 5 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2021-12-14 17:10:15,256 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 119 transitions. [2021-12-14 17:10:15,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-12-14 17:10:15,257 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:10:15,257 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 8, 8, 8, 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] [2021-12-14 17:10:15,281 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-14 17:10:15,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:10:15,468 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:10:15,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:10:15,468 INFO L85 PathProgramCache]: Analyzing trace with hash 385852158, now seen corresponding path program 1 times [2021-12-14 17:10:15,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:10:15,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516116173] [2021-12-14 17:10:15,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:10:15,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:10:15,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:15,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-14 17:10:15,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:15,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-14 17:10:15,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:15,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-14 17:10:15,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:15,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-14 17:10:15,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:15,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-14 17:10:15,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:15,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-14 17:10:15,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:15,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-14 17:10:15,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:15,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-14 17:10:15,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:15,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-14 17:10:15,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:15,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-14 17:10:15,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:15,908 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 2 proven. 484 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2021-12-14 17:10:15,908 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:10:15,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516116173] [2021-12-14 17:10:15,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516116173] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:10:15,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91376311] [2021-12-14 17:10:15,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:10:15,909 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:10:15,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:10:15,910 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 17:10:15,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-14 17:10:16,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:16,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-14 17:10:16,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:10:16,405 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-12-14 17:10:16,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 17:10:17,258 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 2 proven. 484 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2021-12-14 17:10:17,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91376311] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 17:10:17,258 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 17:10:17,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2021-12-14 17:10:17,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809459479] [2021-12-14 17:10:17,258 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 17:10:17,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2021-12-14 17:10:17,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:10:17,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-12-14 17:10:17,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2021-12-14 17:10:17,261 INFO L87 Difference]: Start difference. First operand 103 states and 119 transitions. Second operand has 49 states, 49 states have (on average 2.9183673469387754) internal successors, (143), 49 states have internal predecessors, (143), 1 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2021-12-14 17:10:17,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:10:17,403 INFO L93 Difference]: Finished difference Result 207 states and 262 transitions. [2021-12-14 17:10:17,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-12-14 17:10:17,404 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.9183673469387754) internal successors, (143), 49 states have internal predecessors, (143), 1 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 129 [2021-12-14 17:10:17,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:10:17,405 INFO L225 Difference]: With dead ends: 207 [2021-12-14 17:10:17,405 INFO L226 Difference]: Without dead ends: 151 [2021-12-14 17:10:17,406 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2021-12-14 17:10:17,407 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 46 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 17:10:17,407 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 702 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 17:10:17,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-12-14 17:10:17,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2021-12-14 17:10:17,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 136 states have (on average 1.0735294117647058) internal successors, (146), 136 states have internal predecessors, (146), 11 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-12-14 17:10:17,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 167 transitions. [2021-12-14 17:10:17,416 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 167 transitions. Word has length 129 [2021-12-14 17:10:17,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:10:17,417 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 167 transitions. [2021-12-14 17:10:17,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.9183673469387754) internal successors, (143), 49 states have internal predecessors, (143), 1 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2021-12-14 17:10:17,417 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 167 transitions. [2021-12-14 17:10:17,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-12-14 17:10:17,419 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:10:17,419 INFO L514 BasicCegarLoop]: trace histogram [46, 46, 8, 8, 8, 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] [2021-12-14 17:10:17,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-14 17:10:17,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:10:17,640 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:10:17,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:10:17,640 INFO L85 PathProgramCache]: Analyzing trace with hash -2057415474, now seen corresponding path program 2 times [2021-12-14 17:10:17,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:10:17,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780442638] [2021-12-14 17:10:17,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:10:17,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:10:17,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:18,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-14 17:10:18,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:18,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-14 17:10:18,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:18,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-14 17:10:18,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:18,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-14 17:10:18,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:18,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 17:10:18,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:18,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-14 17:10:18,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:18,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-14 17:10:18,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:18,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-14 17:10:18,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:18,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-14 17:10:18,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:18,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-12-14 17:10:18,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:18,871 INFO L134 CoverageAnalysis]: Checked inductivity of 2231 backedges. 2 proven. 2116 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2021-12-14 17:10:18,872 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:10:18,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780442638] [2021-12-14 17:10:18,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780442638] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:10:18,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345662636] [2021-12-14 17:10:18,872 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-14 17:10:18,873 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:10:18,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:10:18,874 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 17:10:18,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-14 17:10:19,283 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-14 17:10:19,283 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-14 17:10:19,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 1366 conjuncts, 48 conjunts are in the unsatisfiable core [2021-12-14 17:10:19,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:10:19,565 INFO L134 CoverageAnalysis]: Checked inductivity of 2231 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-12-14 17:10:19,566 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 17:10:22,137 INFO L134 CoverageAnalysis]: Checked inductivity of 2231 backedges. 2 proven. 2116 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2021-12-14 17:10:22,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [345662636] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 17:10:22,138 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 17:10:22,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 97 [2021-12-14 17:10:22,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983339980] [2021-12-14 17:10:22,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 17:10:22,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2021-12-14 17:10:22,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:10:22,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2021-12-14 17:10:22,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2021-12-14 17:10:22,145 INFO L87 Difference]: Start difference. First operand 151 states and 167 transitions. Second operand has 97 states, 97 states have (on average 2.463917525773196) internal successors, (239), 97 states have internal predecessors, (239), 1 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2021-12-14 17:10:22,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:10:22,465 INFO L93 Difference]: Finished difference Result 303 states and 382 transitions. [2021-12-14 17:10:22,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-12-14 17:10:22,466 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 2.463917525773196) internal successors, (239), 97 states have internal predecessors, (239), 1 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 177 [2021-12-14 17:10:22,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:10:22,467 INFO L225 Difference]: With dead ends: 303 [2021-12-14 17:10:22,467 INFO L226 Difference]: Without dead ends: 247 [2021-12-14 17:10:22,469 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2021-12-14 17:10:22,471 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 94 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 17:10:22,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 492 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 17:10:22,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2021-12-14 17:10:22,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2021-12-14 17:10:22,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 232 states have (on average 1.043103448275862) internal successors, (242), 232 states have internal predecessors, (242), 11 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-12-14 17:10:22,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 263 transitions. [2021-12-14 17:10:22,487 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 263 transitions. Word has length 177 [2021-12-14 17:10:22,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:10:22,487 INFO L470 AbstractCegarLoop]: Abstraction has 247 states and 263 transitions. [2021-12-14 17:10:22,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 2.463917525773196) internal successors, (239), 97 states have internal predecessors, (239), 1 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2021-12-14 17:10:22,488 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 263 transitions. [2021-12-14 17:10:22,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2021-12-14 17:10:22,491 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:10:22,491 INFO L514 BasicCegarLoop]: trace histogram [94, 94, 8, 8, 8, 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] [2021-12-14 17:10:22,510 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-14 17:10:22,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:10:22,695 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:10:22,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:10:22,696 INFO L85 PathProgramCache]: Analyzing trace with hash 959518830, now seen corresponding path program 3 times [2021-12-14 17:10:22,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:10:22,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900035808] [2021-12-14 17:10:22,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:10:22,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:10:22,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:26,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-12-14 17:10:26,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:26,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-12-14 17:10:26,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:26,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2021-12-14 17:10:26,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:26,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-12-14 17:10:26,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:26,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2021-12-14 17:10:26,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:26,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2021-12-14 17:10:26,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:26,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-12-14 17:10:26,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:26,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2021-12-14 17:10:26,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:26,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2021-12-14 17:10:26,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:26,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-12-14 17:10:26,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:26,354 INFO L134 CoverageAnalysis]: Checked inductivity of 8951 backedges. 2 proven. 8836 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2021-12-14 17:10:26,355 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:10:26,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900035808] [2021-12-14 17:10:26,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900035808] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:10:26,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590668313] [2021-12-14 17:10:26,355 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-14 17:10:26,355 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:10:26,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:10:26,357 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 17:10:26,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-14 17:10:28,083 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-12-14 17:10:28,083 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-14 17:10:28,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 126 conjunts are in the unsatisfiable core [2021-12-14 17:10:28,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:10:28,128 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-14 17:10:28,129 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2021-12-14 17:10:30,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 [2021-12-14 17:10:31,055 INFO L388 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 81 treesize of output 77 [2021-12-14 17:10:31,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:31,064 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 43 [2021-12-14 17:10:31,086 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 9 [2021-12-14 17:10:32,385 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_memcpy_using_uint64_impl_~src#1.base_BEFORE_CALL_1| Int) (|v_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.base_BEFORE_CALL_12| Int)) (and (not (= |v_ULTIMATE.start_memcpy_using_uint64_impl_~src#1.base_BEFORE_CALL_1| |v_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.base_BEFORE_CALL_12|)) (= (select (select |c_#memory_int| |v_ULTIMATE.start_memcpy_using_uint64_impl_~src#1.base_BEFORE_CALL_1|) 0) (select (select |c_#memory_int| |v_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.base_BEFORE_CALL_12|) 0)))) is different from true [2021-12-14 17:10:33,282 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_memcpy_using_uint64_impl_~src#1.base_BEFORE_CALL_2| Int) (|v_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.base_BEFORE_CALL_13| Int)) (and (= (select (select |c_#memory_int| |v_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.base_BEFORE_CALL_13|) 0) (select (select |c_#memory_int| |v_ULTIMATE.start_memcpy_using_uint64_impl_~src#1.base_BEFORE_CALL_2|) 0)) (not (= |v_ULTIMATE.start_memcpy_using_uint64_impl_~src#1.base_BEFORE_CALL_2| |v_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.base_BEFORE_CALL_13|)))) is different from true [2021-12-14 17:10:34,093 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.base_BEFORE_CALL_14| Int) (|v_ULTIMATE.start_memcpy_using_uint64_impl_~src#1.base_BEFORE_CALL_3| Int)) (and (= (select (select |c_#memory_int| |v_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.base_BEFORE_CALL_14|) 0) (select (select |c_#memory_int| |v_ULTIMATE.start_memcpy_using_uint64_impl_~src#1.base_BEFORE_CALL_3|) 0)) (not (= |v_ULTIMATE.start_memcpy_using_uint64_impl_~src#1.base_BEFORE_CALL_3| |v_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.base_BEFORE_CALL_14|)))) is different from true [2021-12-14 17:10:34,474 INFO L388 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 18 treesize of output 23 [2021-12-14 17:10:34,555 INFO L388 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 18 treesize of output 23 [2021-12-14 17:10:34,616 INFO L388 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 18 treesize of output 23 [2021-12-14 17:10:34,669 INFO L388 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 18 treesize of output 23 [2021-12-14 17:10:34,745 INFO L388 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 18 treesize of output 23 [2021-12-14 17:10:34,807 INFO L388 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 27 treesize of output 25 [2021-12-14 17:10:37,348 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_assert_bytes_match_~b#1.base_BEFORE_CALL_2| Int) (|v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_2| Int) (|ULTIMATE.start_memcpy_using_uint64_impl_~s~0#1.base| Int)) (let ((.cse0 (select (select |c_#memory_int| |v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_2|) 0))) (and (= (select (select |c_#memory_int| |ULTIMATE.start_memcpy_using_uint64_impl_~s~0#1.base|) 0) .cse0) (= .cse0 (select (select |c_#memory_int| |v_ULTIMATE.start_assert_bytes_match_~b#1.base_BEFORE_CALL_2|) 0)) (not (= |ULTIMATE.start_memcpy_using_uint64_impl_~s~0#1.base| |v_ULTIMATE.start_assert_bytes_match_~b#1.base_BEFORE_CALL_2|)) (not (= |ULTIMATE.start_memcpy_using_uint64_impl_~s~0#1.base| |v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_2|)) (not (= |v_ULTIMATE.start_assert_bytes_match_~b#1.base_BEFORE_CALL_2| |v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_2|))))) is different from true [2021-12-14 17:10:39,816 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_assert_bytes_match_~b#1.base_BEFORE_CALL_3| Int) (|v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_3| Int) (|ULTIMATE.start_memcpy_using_uint64_impl_~s~0#1.base| Int)) (let ((.cse0 (select (select |c_#memory_int| |v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_3|) 0))) (and (not (= |ULTIMATE.start_memcpy_using_uint64_impl_~s~0#1.base| |v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_3|)) (= (select (select |c_#memory_int| |v_ULTIMATE.start_assert_bytes_match_~b#1.base_BEFORE_CALL_3|) 0) .cse0) (not (= |v_ULTIMATE.start_assert_bytes_match_~b#1.base_BEFORE_CALL_3| |v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_3|)) (not (= |ULTIMATE.start_memcpy_using_uint64_impl_~s~0#1.base| |v_ULTIMATE.start_assert_bytes_match_~b#1.base_BEFORE_CALL_3|)) (= (select (select |c_#memory_int| |ULTIMATE.start_memcpy_using_uint64_impl_~s~0#1.base|) 0) .cse0)))) is different from true [2021-12-14 17:10:42,210 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_assert_bytes_match_~b#1.base_BEFORE_CALL_4| Int) (|ULTIMATE.start_memcpy_using_uint64_impl_~s~0#1.base| Int) (|v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_4| Int)) (let ((.cse0 (select (select |c_#memory_int| |v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_4|) 0))) (and (not (= |v_ULTIMATE.start_assert_bytes_match_~b#1.base_BEFORE_CALL_4| |v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_4|)) (not (= |ULTIMATE.start_memcpy_using_uint64_impl_~s~0#1.base| |v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_4|)) (= (select (select |c_#memory_int| |v_ULTIMATE.start_assert_bytes_match_~b#1.base_BEFORE_CALL_4|) 0) .cse0) (not (= |ULTIMATE.start_memcpy_using_uint64_impl_~s~0#1.base| |v_ULTIMATE.start_assert_bytes_match_~b#1.base_BEFORE_CALL_4|)) (= (select (select |c_#memory_int| |ULTIMATE.start_memcpy_using_uint64_impl_~s~0#1.base|) 0) .cse0)))) is different from true [2021-12-14 17:10:47,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:47,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:47,311 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-14 17:10:47,312 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 4 disjoint index pairs (out of 21 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 137 treesize of output 69 [2021-12-14 17:10:47,579 INFO L134 CoverageAnalysis]: Checked inductivity of 8951 backedges. 64 proven. 1 refuted. 0 times theorem prover too weak. 8860 trivial. 26 not checked. [2021-12-14 17:10:47,579 INFO L328 TraceCheckSpWp]: Computing backward predicates...