./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_string_new_from_c_str_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4d014703 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_string_new_from_c_str_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 d8feb785efb60d35f9204dc33a12e80ea59efcec5de2b7c2ff320ef29197b0bd --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-4d01470 [2021-11-02 14:10:03,687 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 14:10:03,714 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 14:10:03,765 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 14:10:03,769 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 14:10:03,772 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 14:10:03,775 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 14:10:03,777 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 14:10:03,781 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 14:10:03,782 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 14:10:03,783 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 14:10:03,785 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 14:10:03,786 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 14:10:03,790 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 14:10:03,792 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 14:10:03,794 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 14:10:03,795 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 14:10:03,798 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 14:10:03,799 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 14:10:03,803 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 14:10:03,806 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 14:10:03,807 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 14:10:03,808 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 14:10:03,809 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 14:10:03,811 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 14:10:03,813 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 14:10:03,814 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 14:10:03,814 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 14:10:03,815 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 14:10:03,815 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 14:10:03,816 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 14:10:03,816 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 14:10:03,817 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 14:10:03,818 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 14:10:03,820 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 14:10:03,820 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 14:10:03,821 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 14:10:03,821 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 14:10:03,821 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 14:10:03,822 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 14:10:03,822 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 14:10:03,823 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-02 14:10:03,842 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 14:10:03,842 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 14:10:03,842 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 14:10:03,843 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 14:10:03,844 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 14:10:03,844 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 14:10:03,844 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 14:10:03,844 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 14:10:03,845 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 14:10:03,845 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 14:10:03,845 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 14:10:03,845 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 14:10:03,845 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 14:10:03,845 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 14:10:03,846 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 14:10:03,846 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 14:10:03,846 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 14:10:03,846 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 14:10:03,846 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 14:10:03,846 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 14:10:03,847 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 14:10:03,847 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 14:10:03,847 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 14:10:03,847 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 14:10:03,847 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 14:10:03,847 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 14:10:03,848 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 14:10:03,848 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 14:10:03,848 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 14:10:03,848 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d8feb785efb60d35f9204dc33a12e80ea59efcec5de2b7c2ff320ef29197b0bd [2021-11-02 14:10:04,106 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 14:10:04,133 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 14:10:04,136 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 14:10:04,138 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 14:10:04,140 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 14:10:04,141 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_string_new_from_c_str_harness.i [2021-11-02 14:10:04,204 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f463d1dc7/2de425dadec845aa9ea9568313682b64/FLAG37c6f45a4 [2021-11-02 14:10:05,025 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 14:10:05,026 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_string_new_from_c_str_harness.i [2021-11-02 14:10:05,065 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f463d1dc7/2de425dadec845aa9ea9568313682b64/FLAG37c6f45a4 [2021-11-02 14:10:05,169 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f463d1dc7/2de425dadec845aa9ea9568313682b64 [2021-11-02 14:10:05,172 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 14:10:05,173 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 14:10:05,174 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 14:10:05,174 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 14:10:05,177 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 14:10:05,178 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 02:10:05" (1/1) ... [2021-11-02 14:10:05,179 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3328134b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:10:05, skipping insertion in model container [2021-11-02 14:10:05,179 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 02:10:05" (1/1) ... [2021-11-02 14:10:05,185 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 14:10:05,278 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 14:10:05,555 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_string_new_from_c_str_harness.i[4499,4512] [2021-11-02 14:10:05,563 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_string_new_from_c_str_harness.i[4559,4572] [2021-11-02 14:10:05,591 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-02 14:10:05,600 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-02 14:10:06,480 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:10:06,481 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:10:06,481 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:10:06,482 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:10:06,483 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:10:06,499 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:10:06,500 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:10:06,501 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:10:06,502 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:10:06,898 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-02 14:10:06,899 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-02 14:10:06,901 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-02 14:10:06,903 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-02 14:10:06,909 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-02 14:10:06,911 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-02 14:10:06,911 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-02 14:10:06,913 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-02 14:10:06,915 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-02 14:10:06,917 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-02 14:10:07,088 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-02 14:10:07,201 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:10:07,202 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:10:07,309 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 14:10:07,366 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 14:10:07,392 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_string_new_from_c_str_harness.i[4499,4512] [2021-11-02 14:10:07,395 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_string_new_from_c_str_harness.i[4559,4572] [2021-11-02 14:10:07,397 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-02 14:10:07,398 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-02 14:10:07,431 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:10:07,433 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:10:07,433 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:10:07,434 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:10:07,439 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:10:07,444 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:10:07,445 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:10:07,445 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:10:07,446 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:10:07,481 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-02 14:10:07,483 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-02 14:10:07,484 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-02 14:10:07,484 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-02 14:10:07,485 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-02 14:10:07,485 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-02 14:10:07,485 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-02 14:10:07,486 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-02 14:10:07,486 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-02 14:10:07,486 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-02 14:10:07,509 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-02 14:10:07,597 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:10:07,598 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:10:07,660 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 14:10:07,876 INFO L208 MainTranslator]: Completed translation [2021-11-02 14:10:07,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:10:07 WrapperNode [2021-11-02 14:10:07,877 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 14:10:07,878 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 14:10:07,878 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 14:10:07,879 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 14:10:07,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:10:07" (1/1) ... [2021-11-02 14:10:07,992 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:10:07" (1/1) ... [2021-11-02 14:10:08,097 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 14:10:08,098 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 14:10:08,098 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 14:10:08,098 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 14:10:08,106 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:10:07" (1/1) ... [2021-11-02 14:10:08,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:10:07" (1/1) ... [2021-11-02 14:10:08,122 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:10:07" (1/1) ... [2021-11-02 14:10:08,123 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:10:07" (1/1) ... [2021-11-02 14:10:08,170 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:10:07" (1/1) ... [2021-11-02 14:10:08,183 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:10:07" (1/1) ... [2021-11-02 14:10:08,192 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:10:07" (1/1) ... [2021-11-02 14:10:08,203 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 14:10:08,204 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 14:10:08,204 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 14:10:08,204 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 14:10:08,205 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:10:07" (1/1) ... [2021-11-02 14:10:08,214 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 14:10:08,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 14:10:08,237 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 14:10:08,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 14:10:08,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 14:10:08,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2021-11-02 14:10:08,292 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-02 14:10:08,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-02 14:10:08,292 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 14:10:08,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 14:10:08,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 14:10:08,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 14:10:08,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 14:10:08,294 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-02 14:10:08,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-02 14:10:08,294 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_uaddl_overflow [2021-11-02 14:10:08,295 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 14:10:08,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-02 14:10:08,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 14:10:08,296 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real [2021-11-02 14:10:08,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 14:10:14,417 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##49: assume !true; [2021-11-02 14:10:14,428 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 14:10:14,428 INFO L299 CfgBuilder]: Removed 92 assume(true) statements. [2021-11-02 14:10:14,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 02:10:14 BoogieIcfgContainer [2021-11-02 14:10:14,431 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 14:10:14,433 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 14:10:14,433 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 14:10:14,436 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 14:10:14,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 02:10:05" (1/3) ... [2021-11-02 14:10:14,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6055b79e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 02:10:14, skipping insertion in model container [2021-11-02 14:10:14,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:10:07" (2/3) ... [2021-11-02 14:10:14,441 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6055b79e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 02:10:14, skipping insertion in model container [2021-11-02 14:10:14,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 02:10:14" (3/3) ... [2021-11-02 14:10:14,443 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_string_new_from_c_str_harness.i [2021-11-02 14:10:14,448 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 14:10:14,449 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-11-02 14:10:14,506 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 14:10:14,512 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-02 14:10:14,513 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-11-02 14:10:14,540 INFO L276 IsEmpty]: Start isEmpty. Operand has 100 states, 92 states have (on average 1.4130434782608696) internal successors, (130), 99 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:10:14,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-02 14:10:14,547 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:10:14,548 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 14:10:14,550 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-02 14:10:14,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:10:14,555 INFO L85 PathProgramCache]: Analyzing trace with hash -2038439556, now seen corresponding path program 1 times [2021-11-02 14:10:14,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:10:14,564 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92292227] [2021-11-02 14:10:14,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:10:14,565 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:10:15,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:10:15,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:10:15,270 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:10:15,270 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92292227] [2021-11-02 14:10:15,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92292227] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:10:15,271 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:10:15,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 14:10:15,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837045803] [2021-11-02 14:10:15,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-02 14:10:15,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:10:15,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-02 14:10:15,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 14:10:15,312 INFO L87 Difference]: Start difference. First operand has 100 states, 92 states have (on average 1.4130434782608696) internal successors, (130), 99 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:10:17,429 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:10:18,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:10:18,408 INFO L93 Difference]: Finished difference Result 195 states and 254 transitions. [2021-11-02 14:10:18,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-02 14:10:18,411 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-11-02 14:10:18,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:10:18,418 INFO L225 Difference]: With dead ends: 195 [2021-11-02 14:10:18,418 INFO L226 Difference]: Without dead ends: 94 [2021-11-02 14:10:18,420 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.04ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 14:10:18,424 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2745.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.65ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3034.90ms IncrementalHoareTripleChecker+Time [2021-11-02 14:10:18,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 111 Unknown, 0 Unchecked, 2.65ms Time], IncrementalHoareTripleChecker [0 Valid, 110 Invalid, 1 Unknown, 0 Unchecked, 3034.90ms Time] [2021-11-02 14:10:18,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-11-02 14:10:18,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2021-11-02 14:10:18,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 87 states have (on average 1.2183908045977012) internal successors, (106), 93 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:10:18,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 106 transitions. [2021-11-02 14:10:18,478 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 106 transitions. Word has length 28 [2021-11-02 14:10:18,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:10:18,479 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 106 transitions. [2021-11-02 14:10:18,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:10:18,480 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 106 transitions. [2021-11-02 14:10:18,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-02 14:10:18,485 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:10:18,486 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 14:10:18,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 14:10:18,486 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-02 14:10:18,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:10:18,488 INFO L85 PathProgramCache]: Analyzing trace with hash -194592266, now seen corresponding path program 1 times [2021-11-02 14:10:18,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:10:18,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271554677] [2021-11-02 14:10:18,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:10:18,489 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:10:18,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:10:18,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:10:18,929 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:10:18,929 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271554677] [2021-11-02 14:10:18,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271554677] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:10:18,929 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:10:18,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 14:10:18,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777845226] [2021-11-02 14:10:18,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 14:10:18,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:10:18,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 14:10:18,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 14:10:18,932 INFO L87 Difference]: Start difference. First operand 94 states and 106 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:10:21,098 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:10:23,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:10:23,509 INFO L93 Difference]: Finished difference Result 203 states and 229 transitions. [2021-11-02 14:10:23,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 14:10:23,510 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-11-02 14:10:23,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:10:23,511 INFO L225 Difference]: With dead ends: 203 [2021-11-02 14:10:23,511 INFO L226 Difference]: Without dead ends: 166 [2021-11-02 14:10:23,512 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 162.00ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-02 14:10:23,513 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 161 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4168.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.68ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4405.41ms IncrementalHoareTripleChecker+Time [2021-11-02 14:10:23,513 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [161 Valid, 0 Invalid, 502 Unknown, 0 Unchecked, 17.68ms Time], IncrementalHoareTripleChecker [2 Valid, 499 Invalid, 1 Unknown, 0 Unchecked, 4405.41ms Time] [2021-11-02 14:10:23,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-11-02 14:10:23,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 97. [2021-11-02 14:10:23,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 90 states have (on average 1.211111111111111) internal successors, (109), 96 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:10:23,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 109 transitions. [2021-11-02 14:10:23,523 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 109 transitions. Word has length 28 [2021-11-02 14:10:23,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:10:23,524 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 109 transitions. [2021-11-02 14:10:23,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:10:23,524 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 109 transitions. [2021-11-02 14:10:23,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-02 14:10:23,525 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:10:23,525 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 14:10:23,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 14:10:23,526 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-02 14:10:23,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:10:23,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1532971438, now seen corresponding path program 1 times [2021-11-02 14:10:23,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:10:23,527 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893365562] [2021-11-02 14:10:23,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:10:23,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:10:23,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:10:23,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:10:23,911 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:10:23,911 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893365562] [2021-11-02 14:10:23,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893365562] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:10:23,912 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:10:23,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 14:10:23,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498059727] [2021-11-02 14:10:23,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 14:10:23,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:10:23,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 14:10:23,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 14:10:23,913 INFO L87 Difference]: Start difference. First operand 97 states and 109 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:10:25,989 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:10:28,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:10:28,047 INFO L93 Difference]: Finished difference Result 144 states and 157 transitions. [2021-11-02 14:10:28,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 14:10:28,048 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-02 14:10:28,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:10:28,049 INFO L225 Difference]: With dead ends: 144 [2021-11-02 14:10:28,049 INFO L226 Difference]: Without dead ends: 110 [2021-11-02 14:10:28,049 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 215.59ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-02 14:10:28,051 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 22 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3649.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.84ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3994.81ms IncrementalHoareTripleChecker+Time [2021-11-02 14:10:28,052 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 0 Invalid, 420 Unknown, 0 Unchecked, 5.84ms Time], IncrementalHoareTripleChecker [2 Valid, 417 Invalid, 1 Unknown, 0 Unchecked, 3994.81ms Time] [2021-11-02 14:10:28,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-11-02 14:10:28,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 100. [2021-11-02 14:10:28,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 93 states have (on average 1.2043010752688172) internal successors, (112), 99 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:10:28,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 112 transitions. [2021-11-02 14:10:28,059 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 112 transitions. Word has length 30 [2021-11-02 14:10:28,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:10:28,060 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 112 transitions. [2021-11-02 14:10:28,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:10:28,060 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 112 transitions. [2021-11-02 14:10:28,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-02 14:10:28,061 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:10:28,061 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 14:10:28,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 14:10:28,062 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-02 14:10:28,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:10:28,062 INFO L85 PathProgramCache]: Analyzing trace with hash 62642754, now seen corresponding path program 1 times [2021-11-02 14:10:28,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:10:28,063 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295641179] [2021-11-02 14:10:28,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:10:28,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:10:28,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:10:28,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:10:28,883 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:10:28,883 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295641179] [2021-11-02 14:10:28,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295641179] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:10:28,884 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:10:28,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-02 14:10:28,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172826593] [2021-11-02 14:10:28,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 14:10:28,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:10:28,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 14:10:28,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-02 14:10:28,885 INFO L87 Difference]: Start difference. First operand 100 states and 112 transitions. Second operand has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:10:30,937 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:10:33,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:10:33,000 INFO L93 Difference]: Finished difference Result 100 states and 112 transitions. [2021-11-02 14:10:33,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-02 14:10:33,001 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-11-02 14:10:33,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:10:33,002 INFO L225 Difference]: With dead ends: 100 [2021-11-02 14:10:33,002 INFO L226 Difference]: Without dead ends: 91 [2021-11-02 14:10:33,003 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 583.11ms TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2021-11-02 14:10:33,004 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 360 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3431.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.75ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3689.91ms IncrementalHoareTripleChecker+Time [2021-11-02 14:10:33,004 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [360 Valid, 0 Invalid, 338 Unknown, 0 Unchecked, 9.75ms Time], IncrementalHoareTripleChecker [1 Valid, 336 Invalid, 1 Unknown, 0 Unchecked, 3689.91ms Time] [2021-11-02 14:10:33,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-11-02 14:10:33,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 88. [2021-11-02 14:10:33,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 82 states have (on average 1.1829268292682926) internal successors, (97), 87 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:10:33,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 97 transitions. [2021-11-02 14:10:33,011 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 97 transitions. Word has length 32 [2021-11-02 14:10:33,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:10:33,012 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 97 transitions. [2021-11-02 14:10:33,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:10:33,012 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 97 transitions. [2021-11-02 14:10:33,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-02 14:10:33,013 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:10:33,013 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 14:10:33,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 14:10:33,014 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-02 14:10:33,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:10:33,015 INFO L85 PathProgramCache]: Analyzing trace with hash -359067237, now seen corresponding path program 1 times [2021-11-02 14:10:33,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:10:33,015 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435911703] [2021-11-02 14:10:33,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:10:33,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:10:33,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:10:33,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:10:33,436 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:10:33,436 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435911703] [2021-11-02 14:10:33,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435911703] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:10:33,436 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:10:33,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 14:10:33,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796634140] [2021-11-02 14:10:33,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 14:10:33,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:10:33,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 14:10:33,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 14:10:33,438 INFO L87 Difference]: Start difference. First operand 88 states and 97 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:10:35,500 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:10:37,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:10:37,650 INFO L93 Difference]: Finished difference Result 234 states and 262 transitions. [2021-11-02 14:10:37,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 14:10:37,651 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-11-02 14:10:37,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:10:37,652 INFO L225 Difference]: With dead ends: 234 [2021-11-02 14:10:37,652 INFO L226 Difference]: Without dead ends: 187 [2021-11-02 14:10:37,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 164.94ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-02 14:10:37,654 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 168 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3799.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.29ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4113.45ms IncrementalHoareTripleChecker+Time [2021-11-02 14:10:37,654 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [168 Valid, 0 Invalid, 435 Unknown, 0 Unchecked, 7.29ms Time], IncrementalHoareTripleChecker [1 Valid, 433 Invalid, 1 Unknown, 0 Unchecked, 4113.45ms Time] [2021-11-02 14:10:37,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2021-11-02 14:10:37,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 91. [2021-11-02 14:10:37,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 85 states have (on average 1.1764705882352942) internal successors, (100), 90 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:10:37,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 100 transitions. [2021-11-02 14:10:37,663 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 100 transitions. Word has length 48 [2021-11-02 14:10:37,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:10:37,663 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 100 transitions. [2021-11-02 14:10:37,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:10:37,664 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 100 transitions. [2021-11-02 14:10:37,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-02 14:10:37,665 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:10:37,665 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 14:10:37,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 14:10:37,665 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-02 14:10:37,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:10:37,666 INFO L85 PathProgramCache]: Analyzing trace with hash -762261897, now seen corresponding path program 1 times [2021-11-02 14:10:37,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:10:37,666 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830452694] [2021-11-02 14:10:37,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:10:37,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:10:37,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:10:38,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:10:38,236 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:10:38,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830452694] [2021-11-02 14:10:38,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830452694] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:10:38,237 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:10:38,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 14:10:38,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836343870] [2021-11-02 14:10:38,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 14:10:38,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:10:38,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 14:10:38,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-02 14:10:38,238 INFO L87 Difference]: Start difference. First operand 91 states and 100 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:10:40,328 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:10:43,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:10:43,217 INFO L93 Difference]: Finished difference Result 143 states and 158 transitions. [2021-11-02 14:10:43,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-02 14:10:43,218 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-11-02 14:10:43,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:10:43,219 INFO L225 Difference]: With dead ends: 143 [2021-11-02 14:10:43,219 INFO L226 Difference]: Without dead ends: 86 [2021-11-02 14:10:43,220 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 508.55ms TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-11-02 14:10:43,220 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 12 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4327.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.45ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4655.24ms IncrementalHoareTripleChecker+Time [2021-11-02 14:10:43,221 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 0 Invalid, 576 Unknown, 0 Unchecked, 7.45ms Time], IncrementalHoareTripleChecker [1 Valid, 574 Invalid, 1 Unknown, 0 Unchecked, 4655.24ms Time] [2021-11-02 14:10:43,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-11-02 14:10:43,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2021-11-02 14:10:43,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 80 states have (on average 1.1625) internal successors, (93), 85 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:10:43,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 93 transitions. [2021-11-02 14:10:43,227 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 93 transitions. Word has length 50 [2021-11-02 14:10:43,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:10:43,227 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 93 transitions. [2021-11-02 14:10:43,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:10:43,228 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 93 transitions. [2021-11-02 14:10:43,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-02 14:10:43,229 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:10:43,229 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 14:10:43,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-02 14:10:43,229 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-02 14:10:43,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:10:43,230 INFO L85 PathProgramCache]: Analyzing trace with hash -2087599505, now seen corresponding path program 1 times [2021-11-02 14:10:43,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:10:43,230 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565881113] [2021-11-02 14:10:43,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:10:43,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:10:47,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:10:50,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:10:50,370 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:10:50,370 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565881113] [2021-11-02 14:10:50,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565881113] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:10:50,371 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:10:50,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-02 14:10:50,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46425798] [2021-11-02 14:10:50,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-02 14:10:50,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:10:50,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-02 14:10:50,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2021-11-02 14:10:50,373 INFO L87 Difference]: Start difference. First operand 86 states and 93 transitions. Second operand has 21 states, 21 states have (on average 2.4285714285714284) internal successors, (51), 21 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:10:52,437 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:11:05,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:11:05,379 INFO L93 Difference]: Finished difference Result 242 states and 264 transitions. [2021-11-02 14:11:05,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-02 14:11:05,380 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.4285714285714284) internal successors, (51), 21 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-02 14:11:05,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:11:05,382 INFO L225 Difference]: With dead ends: 242 [2021-11-02 14:11:05,382 INFO L226 Difference]: Without dead ends: 240 [2021-11-02 14:11:05,383 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 8921.74ms TimeCoverageRelationStatistics Valid=595, Invalid=1567, Unknown=0, NotChecked=0, Total=2162 [2021-11-02 14:11:05,384 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1328 mSDsluCounter, 735 mSDsCounter, 0 mSdLazyCounter, 1156 mSolverCounterSat, 82 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7176.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1328 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.45ms SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1156 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7600.42ms IncrementalHoareTripleChecker+Time [2021-11-02 14:11:05,384 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1328 Valid, 0 Invalid, 1239 Unknown, 0 Unchecked, 26.45ms Time], IncrementalHoareTripleChecker [82 Valid, 1156 Invalid, 1 Unknown, 0 Unchecked, 7600.42ms Time] [2021-11-02 14:11:05,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2021-11-02 14:11:05,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 116. [2021-11-02 14:11:05,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 110 states have (on average 1.1545454545454545) internal successors, (127), 115 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:11:05,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 127 transitions. [2021-11-02 14:11:05,396 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 127 transitions. Word has length 51 [2021-11-02 14:11:05,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:11:05,397 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 127 transitions. [2021-11-02 14:11:05,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.4285714285714284) internal successors, (51), 21 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:11:05,397 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 127 transitions. [2021-11-02 14:11:05,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-02 14:11:05,398 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:11:05,398 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 14:11:05,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-02 14:11:05,399 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-02 14:11:05,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:11:05,399 INFO L85 PathProgramCache]: Analyzing trace with hash -2085752463, now seen corresponding path program 1 times [2021-11-02 14:11:05,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:11:05,400 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180077393] [2021-11-02 14:11:05,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:11:05,400 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:11:05,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:11:06,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:11:06,188 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:11:06,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180077393] [2021-11-02 14:11:06,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180077393] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:11:06,188 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:11:06,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-02 14:11:06,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051661832] [2021-11-02 14:11:06,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-02 14:11:06,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:11:06,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-02 14:11:06,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-11-02 14:11:06,190 INFO L87 Difference]: Start difference. First operand 116 states and 127 transitions. Second operand has 12 states, 12 states have (on average 4.25) internal successors, (51), 12 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:11:08,316 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:11:11,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:11:11,631 INFO L93 Difference]: Finished difference Result 160 states and 175 transitions. [2021-11-02 14:11:11,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-02 14:11:11,631 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 12 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-02 14:11:11,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:11:11,632 INFO L225 Difference]: With dead ends: 160 [2021-11-02 14:11:11,632 INFO L226 Difference]: Without dead ends: 116 [2021-11-02 14:11:11,633 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1083.12ms TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2021-11-02 14:11:11,634 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 350 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 19 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4461.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.16ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4799.27ms IncrementalHoareTripleChecker+Time [2021-11-02 14:11:11,634 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [350 Valid, 0 Invalid, 628 Unknown, 0 Unchecked, 9.16ms Time], IncrementalHoareTripleChecker [19 Valid, 608 Invalid, 1 Unknown, 0 Unchecked, 4799.27ms Time] [2021-11-02 14:11:11,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-11-02 14:11:11,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2021-11-02 14:11:11,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 110 states have (on average 1.1181818181818182) internal successors, (123), 115 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:11:11,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 123 transitions. [2021-11-02 14:11:11,643 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 123 transitions. Word has length 51 [2021-11-02 14:11:11,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:11:11,644 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 123 transitions. [2021-11-02 14:11:11,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 12 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:11:11,644 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 123 transitions. [2021-11-02 14:11:11,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-02 14:11:11,645 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:11:11,646 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 14:11:11,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-02 14:11:11,646 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-02 14:11:11,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:11:11,647 INFO L85 PathProgramCache]: Analyzing trace with hash 397288175, now seen corresponding path program 1 times [2021-11-02 14:11:11,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:11:11,647 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72917778] [2021-11-02 14:11:11,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:11:11,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:11:11,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:11:12,065 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:11:12,065 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:11:12,065 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72917778] [2021-11-02 14:11:12,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72917778] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 14:11:12,065 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768368322] [2021-11-02 14:11:12,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:11:12,066 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:11:12,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 14:11:12,071 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 14:11:12,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-02 14:11:12,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:11:12,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 2986 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-02 14:11:12,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 14:11:13,289 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:11:13,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 14:11:13,459 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:11:13,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768368322] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 14:11:13,460 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-02 14:11:13,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2021-11-02 14:11:13,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626440318] [2021-11-02 14:11:13,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 14:11:13,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:11:13,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 14:11:13,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-02 14:11:13,462 INFO L87 Difference]: Start difference. First operand 116 states and 123 transitions. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:11:15,883 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.42s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:11:18,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:11:18,278 INFO L93 Difference]: Finished difference Result 203 states and 217 transitions. [2021-11-02 14:11:18,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 14:11:18,278 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-11-02 14:11:18,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:11:18,279 INFO L225 Difference]: With dead ends: 203 [2021-11-02 14:11:18,279 INFO L226 Difference]: Without dead ends: 161 [2021-11-02 14:11:18,280 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 99 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 347.80ms TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-02 14:11:18,280 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 141 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4386.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.29ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4700.67ms IncrementalHoareTripleChecker+Time [2021-11-02 14:11:18,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [141 Valid, 0 Invalid, 500 Unknown, 0 Unchecked, 6.29ms Time], IncrementalHoareTripleChecker [4 Valid, 495 Invalid, 1 Unknown, 0 Unchecked, 4700.67ms Time] [2021-11-02 14:11:18,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-11-02 14:11:18,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 118. [2021-11-02 14:11:18,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 112 states have (on average 1.125) internal successors, (126), 117 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:11:18,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 126 transitions. [2021-11-02 14:11:18,290 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 126 transitions. Word has length 52 [2021-11-02 14:11:18,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:11:18,290 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 126 transitions. [2021-11-02 14:11:18,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:11:18,291 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 126 transitions. [2021-11-02 14:11:18,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-02 14:11:18,292 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:11:18,292 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 14:11:18,315 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-02 14:11:18,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:11:18,500 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-02 14:11:18,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:11:18,500 INFO L85 PathProgramCache]: Analyzing trace with hash 2057582769, now seen corresponding path program 1 times [2021-11-02 14:11:18,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:11:18,501 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759991331] [2021-11-02 14:11:18,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:11:18,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:11:18,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:11:18,813 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:11:18,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:11:18,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759991331] [2021-11-02 14:11:18,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759991331] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:11:18,813 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:11:18,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 14:11:18,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883148040] [2021-11-02 14:11:18,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 14:11:18,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:11:18,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 14:11:18,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 14:11:18,814 INFO L87 Difference]: Start difference. First operand 118 states and 126 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:11:21,216 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.40s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:11:22,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:11:22,600 INFO L93 Difference]: Finished difference Result 204 states and 218 transitions. [2021-11-02 14:11:22,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 14:11:22,601 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-11-02 14:11:22,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:11:22,602 INFO L225 Difference]: With dead ends: 204 [2021-11-02 14:11:22,602 INFO L226 Difference]: Without dead ends: 161 [2021-11-02 14:11:22,602 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 79.75ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 14:11:22,603 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 91 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3453.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.86ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3723.39ms IncrementalHoareTripleChecker+Time [2021-11-02 14:11:22,603 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 0 Invalid, 270 Unknown, 0 Unchecked, 2.86ms Time], IncrementalHoareTripleChecker [0 Valid, 269 Invalid, 1 Unknown, 0 Unchecked, 3723.39ms Time] [2021-11-02 14:11:22,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-11-02 14:11:22,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 119. [2021-11-02 14:11:22,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 113 states have (on average 1.1150442477876106) internal successors, (126), 118 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:11:22,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 126 transitions. [2021-11-02 14:11:22,611 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 126 transitions. Word has length 52 [2021-11-02 14:11:22,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:11:22,612 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 126 transitions. [2021-11-02 14:11:22,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:11:22,612 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 126 transitions. [2021-11-02 14:11:22,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-02 14:11:22,613 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:11:22,613 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 14:11:22,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-02 14:11:22,614 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-02 14:11:22,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:11:22,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1342921069, now seen corresponding path program 1 times [2021-11-02 14:11:22,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:11:22,615 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030750168] [2021-11-02 14:11:22,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:11:22,615 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:11:22,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:11:23,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:11:23,009 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:11:23,009 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030750168] [2021-11-02 14:11:23,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030750168] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:11:23,009 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:11:23,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 14:11:23,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018813669] [2021-11-02 14:11:23,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 14:11:23,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:11:23,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 14:11:23,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 14:11:23,010 INFO L87 Difference]: Start difference. First operand 119 states and 126 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:11:25,495 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.48s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:11:27,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:11:27,880 INFO L93 Difference]: Finished difference Result 164 states and 175 transitions. [2021-11-02 14:11:27,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 14:11:27,880 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-11-02 14:11:27,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:11:27,881 INFO L225 Difference]: With dead ends: 164 [2021-11-02 14:11:27,881 INFO L226 Difference]: Without dead ends: 95 [2021-11-02 14:11:27,882 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 245.95ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-02 14:11:27,882 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 6 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4374.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.83ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4691.79ms IncrementalHoareTripleChecker+Time [2021-11-02 14:11:27,882 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 0 Invalid, 451 Unknown, 0 Unchecked, 4.83ms Time], IncrementalHoareTripleChecker [0 Valid, 450 Invalid, 1 Unknown, 0 Unchecked, 4691.79ms Time] [2021-11-02 14:11:27,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-11-02 14:11:27,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2021-11-02 14:11:27,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 89 states have (on average 1.1235955056179776) internal successors, (100), 94 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:11:27,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 100 transitions. [2021-11-02 14:11:27,889 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 100 transitions. Word has length 53 [2021-11-02 14:11:27,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:11:27,889 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 100 transitions. [2021-11-02 14:11:27,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:11:27,890 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 100 transitions. [2021-11-02 14:11:27,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-02 14:11:27,890 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:11:27,891 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 14:11:27,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-02 14:11:27,891 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-02 14:11:27,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:11:27,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1779689521, now seen corresponding path program 1 times [2021-11-02 14:11:27,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:11:27,892 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872714393] [2021-11-02 14:11:27,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:11:27,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:11:28,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:11:29,715 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 14:11:29,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:11:29,715 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872714393] [2021-11-02 14:11:29,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872714393] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 14:11:29,715 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1014591002] [2021-11-02 14:11:29,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:11:29,715 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:11:29,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 14:11:29,724 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 14:11:29,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-02 14:11:30,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:11:30,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 2997 conjuncts, 77 conjunts are in the unsatisfiable core [2021-11-02 14:11:30,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 14:11:32,265 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-02 14:11:32,695 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-02 14:11:32,696 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 28 [2021-11-02 14:11:33,384 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-11-02 14:11:33,385 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 21 [2021-11-02 14:11:33,684 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-11-02 14:11:33,685 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 26 [2021-11-02 14:11:34,221 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-02 14:11:34,222 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 29 [2021-11-02 14:11:34,815 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:11:34,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 14:12:03,708 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 71 [2021-11-02 14:12:03,745 INFO L354 Elim1Store]: treesize reduction 81, result has 1.2 percent of original size [2021-11-02 14:12:03,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 192696 treesize of output 1 [2021-11-02 14:12:03,807 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:12:03,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1014591002] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 14:12:03,807 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-02 14:12:03,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 24, 11] total 41 [2021-11-02 14:12:03,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841936598] [2021-11-02 14:12:03,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-11-02 14:12:03,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:12:03,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-11-02 14:12:03,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=1531, Unknown=9, NotChecked=0, Total=1640 [2021-11-02 14:12:03,810 INFO L87 Difference]: Start difference. First operand 95 states and 100 transitions. Second operand has 41 states, 41 states have (on average 2.902439024390244) internal successors, (119), 41 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:12:05,886 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:12:19,715 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse10 (div c_ULTIMATE.start_bounded_malloc_~size 18446744073709551616))) (let ((.cse7 (+ .cse10 1)) (.cse3 (* 18446744073709551616 .cse10))) (let ((.cse1 (+ c_ULTIMATE.start_aws_mem_acquire_~size 1234550)) (.cse0 (= c_ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse5 (<= c_ULTIMATE.start_aws_string_new_from_array_~len (+ .cse3 36028797020198517))) (.cse6 (< 0 .cse7)) (.cse4 (+ 1234550 c_ULTIMATE.start_can_fail_malloc_~size))) (and (not (= c_ULTIMATE.start_aws_string_new_from_c_str_~c_str.base 0)) (= c_ULTIMATE.start_aws_string_new_from_array_~str~2.base |c_ULTIMATE.start_#Ultimate.C_memcpy_dest.base|) (not (= c_ULTIMATE.start_aws_string_new_from_array_~bytes.base 0)) .cse0 (= |c_ULTIMATE.start_bounded_malloc_#res.offset| 0) (not (= |c_ULTIMATE.start_bounded_malloc_#res.base| 0)) (= (+ 1234550 c_ULTIMATE.start_aws_add_u64_checked_~a) 0) (<= 0 |c_ULTIMATE.start_#Ultimate.C_memcpy_#t~loopctr1520|) (<= c_ULTIMATE.start_aws_string_new_from_array_~len .cse1) (<= .cse1 c_ULTIMATE.start_aws_string_new_from_array_~len) (let ((.cse2 (+ .cse3 36028797018963967))) (or (and .cse0 (<= c_ULTIMATE.start_bounded_malloc_~size .cse2)) (and (= c_ULTIMATE.start_assume_abort_if_not_~cond 0) (< .cse2 c_ULTIMATE.start_bounded_malloc_~size)))) (= |c_ULTIMATE.start_can_fail_malloc_#res.offset| 0) (<= c_ULTIMATE.start_aws_string_new_from_array_~len .cse4) (not (= 0 c_ULTIMATE.start_aws_string_new_from_c_str_harness_~c_str~0.base)) (or (<= (+ 18410715276689353099 |c_ULTIMATE.start_#Ultimate.C_memcpy_size|) 0) (<= 1234550 |c_ULTIMATE.start_#Ultimate.C_memcpy_size|)) (= c_ULTIMATE.start_aws_string_new_from_array_~len (select (select |c_#memory_int| c_ULTIMATE.start_aws_string_new_from_array_~str~2.base) (+ c_ULTIMATE.start_aws_string_new_from_array_~str~2.offset 8))) (= |c_ULTIMATE.start_#Ultimate.C_memcpy_#t~loopctr1520| 0) (= c_ULTIMATE.start_aws_mem_acquire_~mem~0.offset 0) (= c_ULTIMATE.start_aws_string_new_from_array_~str~2.offset 0) (or .cse5 .cse6 (<= c_ULTIMATE.start_assume_abort_if_not_~cond (* 256 (div c_ULTIMATE.start_assume_abort_if_not_~cond 256)))) (or (<= .cse7 0) (<= (+ .cse3 1234550) c_ULTIMATE.start_aws_string_new_from_array_~len)) (= |c_ULTIMATE.start_aws_string_new_from_array_~#malloc_size~0.offset| c_ULTIMATE.start_aws_add_u64_checked_~r.offset) (forall ((|v_ULTIMATE.start_#Ultimate.C_memcpy_#t~loopctr1530_10| Int)) (or (forall ((v_DerPreprocessor_3 Int)) (= (mod (let ((.cse8 (store (select (store |c_#memory_int| |c_ULTIMATE.start_#Ultimate.C_memcpy_dest.base| (store (select |c_#memory_int| |c_ULTIMATE.start_#Ultimate.C_memcpy_dest.base|) (+ |v_ULTIMATE.start_#Ultimate.C_memcpy_#t~loopctr1530_10| |c_ULTIMATE.start_#Ultimate.C_memcpy_dest.offset|) v_DerPreprocessor_3)) c_ULTIMATE.start_aws_string_new_from_array_~str~2.base) (+ 16 c_ULTIMATE.start_aws_string_new_from_array_~str~2.offset c_ULTIMATE.start_aws_string_new_from_array_~len) 0))) (select .cse8 (+ (select .cse8 (+ c_ULTIMATE.start_aws_string_new_from_array_~str~2.offset 8)) 16 c_ULTIMATE.start_aws_string_new_from_array_~str~2.offset))) 256) 0)) (< |v_ULTIMATE.start_#Ultimate.C_memcpy_#t~loopctr1530_10| 0))) (not (= |c_ULTIMATE.start_ensure_c_str_is_allocated_#res.base| 0)) (= |c_ULTIMATE.start_aws_string_new_from_array_~#malloc_size~0.base| c_ULTIMATE.start_aws_add_u64_checked_~r.base) (or .cse5 .cse6) (forall ((v_DerPreprocessor_3 Int)) (= (mod (let ((.cse9 (store (select (store |c_#memory_int| |c_ULTIMATE.start_#Ultimate.C_memcpy_dest.base| (store (select |c_#memory_int| |c_ULTIMATE.start_#Ultimate.C_memcpy_dest.base|) (+ |c_ULTIMATE.start_#Ultimate.C_memcpy_#t~loopctr1530| |c_ULTIMATE.start_#Ultimate.C_memcpy_dest.offset|) v_DerPreprocessor_3)) c_ULTIMATE.start_aws_string_new_from_array_~str~2.base) (+ 16 c_ULTIMATE.start_aws_string_new_from_array_~str~2.offset c_ULTIMATE.start_aws_string_new_from_array_~len) 0))) (select .cse9 (+ (select .cse9 (+ c_ULTIMATE.start_aws_string_new_from_array_~str~2.offset 8)) 16 c_ULTIMATE.start_aws_string_new_from_array_~str~2.offset))) 256) 0)) (<= (+ 16 c_ULTIMATE.start_aws_string_new_from_array_~str~2.offset) |c_ULTIMATE.start_#Ultimate.C_memcpy_dest.offset|) (not (= c_ULTIMATE.start_ensure_c_str_is_allocated_~str~1.base 0)) (= |c_ULTIMATE.start_aws_mem_acquire_#res.offset| 0) (<= .cse4 c_ULTIMATE.start_aws_string_new_from_array_~len) (<= |c_ULTIMATE.start_#Ultimate.C_memcpy_size| c_ULTIMATE.start_aws_string_new_from_array_~len) (= c_ULTIMATE.start_aws_add_u64_checked_~b c_ULTIMATE.start_aws_string_new_from_array_~len))))) is different from false [2021-11-02 14:12:41,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:12:41,178 INFO L93 Difference]: Finished difference Result 231 states and 248 transitions. [2021-11-02 14:12:41,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-11-02 14:12:41,179 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.902439024390244) internal successors, (119), 41 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-11-02 14:12:41,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:12:41,180 INFO L225 Difference]: With dead ends: 231 [2021-11-02 14:12:41,180 INFO L226 Difference]: Without dead ends: 187 [2021-11-02 14:12:41,183 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1194 ImplicationChecksByTransitivity, 56033.64ms TimeCoverageRelationStatistics Valid=1517, Invalid=6667, Unknown=10, NotChecked=178, Total=8372 [2021-11-02 14:12:41,184 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2195 mSDsluCounter, 1753 mSDsCounter, 0 mSdLazyCounter, 2664 mSolverCounterSat, 338 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12891.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2195 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 50.38ms SdHoareTripleChecker+Time, 338 IncrementalHoareTripleChecker+Valid, 2664 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 413 IncrementalHoareTripleChecker+Unchecked, 13654.05ms IncrementalHoareTripleChecker+Time [2021-11-02 14:12:41,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2195 Valid, 0 Invalid, 3416 Unknown, 0 Unchecked, 50.38ms Time], IncrementalHoareTripleChecker [338 Valid, 2664 Invalid, 1 Unknown, 413 Unchecked, 13654.05ms Time] [2021-11-02 14:12:41,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2021-11-02 14:12:41,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 97. [2021-11-02 14:12:41,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 91 states have (on average 1.1318681318681318) internal successors, (103), 96 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:12:41,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 103 transitions. [2021-11-02 14:12:41,195 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 103 transitions. Word has length 53 [2021-11-02 14:12:41,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:12:41,196 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 103 transitions. [2021-11-02 14:12:41,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.902439024390244) internal successors, (119), 41 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:12:41,196 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 103 transitions. [2021-11-02 14:12:41,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-02 14:12:41,197 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:12:41,197 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 14:12:41,229 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-02 14:12:41,411 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,SelfDestructingSolverStorable11 [2021-11-02 14:12:41,412 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-02 14:12:41,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:12:41,412 INFO L85 PathProgramCache]: Analyzing trace with hash 917019311, now seen corresponding path program 2 times [2021-11-02 14:12:41,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:12:41,412 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10363768] [2021-11-02 14:12:41,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:12:41,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:12:41,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:12:41,922 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:12:41,922 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:12:41,922 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10363768] [2021-11-02 14:12:41,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10363768] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 14:12:41,922 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230380526] [2021-11-02 14:12:41,922 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 14:12:41,923 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:12:41,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 14:12:41,924 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 14:12:41,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-02 14:21:04,667 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 14:21:04,667 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 14:21:04,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 3057 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-02 14:21:04,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 14:21:05,273 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:21:05,273 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 14:21:05,619 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:21:05,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230380526] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 14:21:05,620 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-02 14:21:05,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2021-11-02 14:21:05,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573715572] [2021-11-02 14:21:05,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-02 14:21:05,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:21:05,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-02 14:21:05,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2021-11-02 14:21:05,622 INFO L87 Difference]: Start difference. First operand 97 states and 103 transitions. Second operand has 15 states, 15 states have (on average 4.4) internal successors, (66), 15 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:21:07,891 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:21:12,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:21:12,503 INFO L93 Difference]: Finished difference Result 352 states and 379 transitions. [2021-11-02 14:21:12,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-02 14:21:12,504 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.4) internal successors, (66), 15 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-11-02 14:21:12,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:21:12,505 INFO L225 Difference]: With dead ends: 352 [2021-11-02 14:21:12,505 INFO L226 Difference]: Without dead ends: 309 [2021-11-02 14:21:12,506 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 959.42ms TimeCoverageRelationStatistics Valid=152, Invalid=400, Unknown=0, NotChecked=0, Total=552 [2021-11-02 14:21:12,508 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 651 mSDsluCounter, 740 mSDsCounter, 0 mSdLazyCounter, 914 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5917.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 651 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.49ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 914 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6334.66ms IncrementalHoareTripleChecker+Time [2021-11-02 14:21:12,509 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [651 Valid, 0 Invalid, 931 Unknown, 0 Unchecked, 11.49ms Time], IncrementalHoareTripleChecker [16 Valid, 914 Invalid, 1 Unknown, 0 Unchecked, 6334.66ms Time] [2021-11-02 14:21:12,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2021-11-02 14:21:12,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 102. [2021-11-02 14:21:12,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 96 states have (on average 1.1666666666666667) internal successors, (112), 101 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:21:12,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 112 transitions. [2021-11-02 14:21:12,523 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 112 transitions. Word has length 55 [2021-11-02 14:21:12,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:21:12,523 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 112 transitions. [2021-11-02 14:21:12,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.4) internal successors, (66), 15 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:21:12,524 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 112 transitions. [2021-11-02 14:21:12,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-02 14:21:12,524 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:21:12,524 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 14:21:12,685 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-02 14:21:12,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:21:12,743 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-02 14:21:12,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:21:12,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1090477240, now seen corresponding path program 1 times [2021-11-02 14:21:12,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:21:12,744 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97950963] [2021-11-02 14:21:12,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:21:12,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:21:15,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:21:18,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:21:18,072 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:21:18,072 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97950963] [2021-11-02 14:21:18,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97950963] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:21:18,072 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:21:18,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-11-02 14:21:18,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94999468] [2021-11-02 14:21:18,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-02 14:21:18,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:21:18,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-02 14:21:18,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=500, Unknown=0, NotChecked=0, Total=552 [2021-11-02 14:21:18,074 INFO L87 Difference]: Start difference. First operand 102 states and 112 transitions. Second operand has 24 states, 24 states have (on average 2.3333333333333335) internal successors, (56), 24 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:21:20,366 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:21:36,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:21:36,138 INFO L93 Difference]: Finished difference Result 161 states and 175 transitions. [2021-11-02 14:21:36,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-02 14:21:36,139 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.3333333333333335) internal successors, (56), 24 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-11-02 14:21:36,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:21:36,144 INFO L225 Difference]: With dead ends: 161 [2021-11-02 14:21:36,145 INFO L226 Difference]: Without dead ends: 159 [2021-11-02 14:21:36,146 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 12080.68ms TimeCoverageRelationStatistics Valid=454, Invalid=1802, Unknown=0, NotChecked=0, Total=2256 [2021-11-02 14:21:36,146 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1259 mSDsluCounter, 809 mSDsCounter, 0 mSdLazyCounter, 1367 mSolverCounterSat, 106 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7573.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1259 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.90ms SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1367 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8109.90ms IncrementalHoareTripleChecker+Time [2021-11-02 14:21:36,147 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1259 Valid, 0 Invalid, 1474 Unknown, 0 Unchecked, 16.90ms Time], IncrementalHoareTripleChecker [106 Valid, 1367 Invalid, 1 Unknown, 0 Unchecked, 8109.90ms Time] [2021-11-02 14:21:36,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-11-02 14:21:36,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 116. [2021-11-02 14:21:36,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 110 states have (on average 1.1454545454545455) internal successors, (126), 115 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:21:36,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 126 transitions. [2021-11-02 14:21:36,165 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 126 transitions. Word has length 56 [2021-11-02 14:21:36,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:21:36,166 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 126 transitions. [2021-11-02 14:21:36,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.3333333333333335) internal successors, (56), 24 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:21:36,166 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 126 transitions. [2021-11-02 14:21:36,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-02 14:21:36,167 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:21:36,167 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 14:21:36,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-02 14:21:36,167 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-02 14:21:36,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:21:36,168 INFO L85 PathProgramCache]: Analyzing trace with hash 23522858, now seen corresponding path program 1 times [2021-11-02 14:21:36,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:21:36,168 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394375958] [2021-11-02 14:21:36,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:21:36,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:21:39,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:21:41,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:21:41,816 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:21:41,816 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394375958] [2021-11-02 14:21:41,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394375958] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:21:41,816 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:21:41,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-11-02 14:21:41,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418509915] [2021-11-02 14:21:41,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-02 14:21:41,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:21:41,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-02 14:21:41,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2021-11-02 14:21:41,817 INFO L87 Difference]: Start difference. First operand 116 states and 126 transitions. Second operand has 20 states, 20 states have (on average 2.9) internal successors, (58), 20 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:21:44,157 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:21:52,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:21:52,419 INFO L93 Difference]: Finished difference Result 159 states and 173 transitions. [2021-11-02 14:21:52,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-02 14:21:52,419 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.9) internal successors, (58), 20 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-11-02 14:21:52,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:21:52,420 INFO L225 Difference]: With dead ends: 159 [2021-11-02 14:21:52,420 INFO L226 Difference]: Without dead ends: 157 [2021-11-02 14:21:52,421 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 6035.40ms TimeCoverageRelationStatistics Valid=434, Invalid=1048, Unknown=0, NotChecked=0, Total=1482 [2021-11-02 14:21:52,422 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 968 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 845 mSolverCounterSat, 32 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5553.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 968 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.78ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 845 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5963.24ms IncrementalHoareTripleChecker+Time [2021-11-02 14:21:52,422 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [968 Valid, 0 Invalid, 878 Unknown, 0 Unchecked, 9.78ms Time], IncrementalHoareTripleChecker [32 Valid, 845 Invalid, 1 Unknown, 0 Unchecked, 5963.24ms Time] [2021-11-02 14:21:52,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-11-02 14:21:52,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 118. [2021-11-02 14:21:52,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 112 states have (on average 1.1428571428571428) internal successors, (128), 117 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:21:52,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 128 transitions. [2021-11-02 14:21:52,437 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 128 transitions. Word has length 58 [2021-11-02 14:21:52,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:21:52,438 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 128 transitions. [2021-11-02 14:21:52,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.9) internal successors, (58), 20 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:21:52,438 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 128 transitions. [2021-11-02 14:21:52,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-02 14:21:52,439 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:21:52,439 INFO L514 BasicCegarLoop]: trace histogram [6, 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] [2021-11-02 14:21:52,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-02 14:21:52,439 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-02 14:21:52,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:21:52,440 INFO L85 PathProgramCache]: Analyzing trace with hash 65845935, now seen corresponding path program 3 times [2021-11-02 14:21:52,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:21:52,440 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117360973] [2021-11-02 14:21:52,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:21:52,441 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:21:52,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:21:53,082 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:21:53,082 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:21:53,082 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117360973] [2021-11-02 14:21:53,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117360973] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 14:21:53,082 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084012372] [2021-11-02 14:21:53,082 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 14:21:53,082 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:21:53,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 14:21:53,088 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 14:21:53,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process Killed by 15