./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 c3fed411 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 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-18 01:23:42,525 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-18 01:23:42,526 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-18 01:23:42,561 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-18 01:23:42,562 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-18 01:23:42,565 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-18 01:23:42,568 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-18 01:23:42,570 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-18 01:23:42,571 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-18 01:23:42,572 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-18 01:23:42,573 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-18 01:23:42,573 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-18 01:23:42,574 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-18 01:23:42,575 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-18 01:23:42,576 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-18 01:23:42,577 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-18 01:23:42,577 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-18 01:23:42,578 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-18 01:23:42,580 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-18 01:23:42,581 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-18 01:23:42,582 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-18 01:23:42,583 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-18 01:23:42,584 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-18 01:23:42,585 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-18 01:23:42,587 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-18 01:23:42,587 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-18 01:23:42,587 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-18 01:23:42,588 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-18 01:23:42,589 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-18 01:23:42,589 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-18 01:23:42,590 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-18 01:23:42,590 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-18 01:23:42,591 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-18 01:23:42,591 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-18 01:23:42,592 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-18 01:23:42,593 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-18 01:23:42,593 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-18 01:23:42,593 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-18 01:23:42,594 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-18 01:23:42,595 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-18 01:23:42,595 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-18 01:23:42,602 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-18 01:23:42,632 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-18 01:23:42,640 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-18 01:23:42,641 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-18 01:23:42,641 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-18 01:23:42,642 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-18 01:23:42,642 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-18 01:23:42,643 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-18 01:23:42,643 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-18 01:23:42,643 INFO L138 SettingsManager]: * Use SBE=true [2021-12-18 01:23:42,643 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-18 01:23:42,644 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-18 01:23:42,644 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-18 01:23:42,644 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-18 01:23:42,645 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-18 01:23:42,645 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-18 01:23:42,645 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-18 01:23:42,645 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-18 01:23:42,645 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-18 01:23:42,645 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-18 01:23:42,646 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-18 01:23:42,646 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-18 01:23:42,646 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 01:23:42,646 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-18 01:23:42,646 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-18 01:23:42,647 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-18 01:23:42,647 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-18 01:23:42,647 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-18 01:23:42,647 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-18 01:23:42,647 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-18 01:23:42,648 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-18 01:23:42,648 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-18 01:23:42,648 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d8feb785efb60d35f9204dc33a12e80ea59efcec5de2b7c2ff320ef29197b0bd [2021-12-18 01:23:42,899 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-18 01:23:42,921 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-18 01:23:42,924 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-18 01:23:42,925 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-18 01:23:42,926 INFO L275 PluginConnector]: CDTParser initialized [2021-12-18 01:23:42,927 INFO L432 ainManager$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 [2021-12-18 01:23:43,025 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8d93c3b0/d409b05aeda04571a2384e71ff493ac0/FLAGf00ca7909 [2021-12-18 01:23:43,674 INFO L306 CDTParser]: Found 1 translation units. [2021-12-18 01:23:43,675 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_string_new_from_c_str_harness.i [2021-12-18 01:23:43,710 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8d93c3b0/d409b05aeda04571a2384e71ff493ac0/FLAGf00ca7909 [2021-12-18 01:23:43,821 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8d93c3b0/d409b05aeda04571a2384e71ff493ac0 [2021-12-18 01:23:43,824 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-18 01:23:43,825 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-18 01:23:43,827 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-18 01:23:43,827 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-18 01:23:43,830 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-18 01:23:43,831 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 01:23:43" (1/1) ... [2021-12-18 01:23:43,832 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40558aa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:23:43, skipping insertion in model container [2021-12-18 01:23:43,832 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 01:23:43" (1/1) ... [2021-12-18 01:23:43,838 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-18 01:23:43,927 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-18 01:23:44,105 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_string_new_from_c_str_harness.i[4499,4512] [2021-12-18 01:23:44,112 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_string_new_from_c_str_harness.i[4559,4572] [2021-12-18 01:23:44,749 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:23:44,754 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:23:44,755 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:23:44,756 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:23:44,757 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:23:44,765 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:23:44,767 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:23:44,769 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:23:44,770 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:23:45,040 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-18 01:23:45,041 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-18 01:23:45,042 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-18 01:23:45,043 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-18 01:23:45,044 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-18 01:23:45,048 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-18 01:23:45,049 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-18 01:23:45,049 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-18 01:23:45,050 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-18 01:23:45,050 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-18 01:23:45,140 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-18 01:23:45,246 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:23:45,246 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:23:45,348 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 01:23:45,401 INFO L203 MainTranslator]: Completed pre-run [2021-12-18 01:23:45,414 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_string_new_from_c_str_harness.i[4499,4512] [2021-12-18 01:23:45,415 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_string_new_from_c_str_harness.i[4559,4572] [2021-12-18 01:23:45,451 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:23:45,460 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:23:45,461 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:23:45,461 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:23:45,462 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:23:45,493 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:23:45,497 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:23:45,498 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:23:45,499 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:23:45,534 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-18 01:23:45,536 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-18 01:23:45,537 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-18 01:23:45,537 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-18 01:23:45,538 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-18 01:23:45,539 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-18 01:23:45,539 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-18 01:23:45,540 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-18 01:23:45,540 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-18 01:23:45,541 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-18 01:23:45,563 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-18 01:23:45,622 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:23:45,623 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:23:45,666 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 01:23:45,862 INFO L208 MainTranslator]: Completed translation [2021-12-18 01:23:45,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:23:45 WrapperNode [2021-12-18 01:23:45,863 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-18 01:23:45,864 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-18 01:23:45,864 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-18 01:23:45,864 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-18 01:23:45,872 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:23:45" (1/1) ... [2021-12-18 01:23:45,971 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:23:45" (1/1) ... [2021-12-18 01:23:46,053 INFO L137 Inliner]: procedures = 690, calls = 2735, calls flagged for inlining = 62, calls inlined = 9, statements flattened = 812 [2021-12-18 01:23:46,054 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-18 01:23:46,054 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-18 01:23:46,055 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-18 01:23:46,055 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-18 01:23:46,062 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:23:45" (1/1) ... [2021-12-18 01:23:46,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:23:45" (1/1) ... [2021-12-18 01:23:46,074 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:23:45" (1/1) ... [2021-12-18 01:23:46,075 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:23:45" (1/1) ... [2021-12-18 01:23:46,117 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:23:45" (1/1) ... [2021-12-18 01:23:46,134 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:23:45" (1/1) ... [2021-12-18 01:23:46,141 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:23:45" (1/1) ... [2021-12-18 01:23:46,156 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-18 01:23:46,160 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-18 01:23:46,161 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-18 01:23:46,161 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-18 01:23:46,162 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:23:45" (1/1) ... [2021-12-18 01:23:46,168 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 01:23:46,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:23:46,193 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-18 01:23:46,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-18 01:23:46,229 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid [2021-12-18 01:23:46,230 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid [2021-12-18 01:23:46,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-18 01:23:46,230 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-12-18 01:23:46,230 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-12-18 01:23:46,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2021-12-18 01:23:46,231 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2021-12-18 01:23:46,231 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2021-12-18 01:23:46,231 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-18 01:23:46,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-18 01:23:46,232 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-18 01:23:46,232 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-18 01:23:46,233 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-18 01:23:46,233 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-12-18 01:23:46,233 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-12-18 01:23:46,233 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-18 01:23:46,234 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-18 01:23:46,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-18 01:23:46,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-18 01:23:46,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-18 01:23:46,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-18 01:23:46,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-18 01:23:46,235 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-18 01:23:46,235 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-18 01:23:46,235 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-18 01:23:46,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-18 01:23:46,236 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2021-12-18 01:23:46,236 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2021-12-18 01:23:46,236 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-18 01:23:46,237 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-18 01:23:46,237 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2021-12-18 01:23:46,237 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2021-12-18 01:23:46,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-18 01:23:46,237 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2021-12-18 01:23:46,237 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2021-12-18 01:23:46,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-18 01:23:46,238 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_new_from_array [2021-12-18 01:23:46,238 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_new_from_array [2021-12-18 01:23:46,238 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-12-18 01:23:46,238 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-12-18 01:23:46,238 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2021-12-18 01:23:46,239 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2021-12-18 01:23:46,239 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-12-18 01:23:46,239 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-12-18 01:23:46,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-18 01:23:46,240 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real [2021-12-18 01:23:46,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-18 01:23:46,476 INFO L236 CfgBuilder]: Building ICFG [2021-12-18 01:23:46,477 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-18 01:23:46,601 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume !true; [2021-12-18 01:23:47,188 INFO L277 CfgBuilder]: Performing block encoding [2021-12-18 01:23:47,198 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-18 01:23:47,198 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-18 01:23:47,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 01:23:47 BoogieIcfgContainer [2021-12-18 01:23:47,200 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-18 01:23:47,202 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-18 01:23:47,202 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-18 01:23:47,206 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-18 01:23:47,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 01:23:43" (1/3) ... [2021-12-18 01:23:47,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15963974 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 01:23:47, skipping insertion in model container [2021-12-18 01:23:47,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:23:45" (2/3) ... [2021-12-18 01:23:47,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15963974 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 01:23:47, skipping insertion in model container [2021-12-18 01:23:47,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 01:23:47" (3/3) ... [2021-12-18 01:23:47,210 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_string_new_from_c_str_harness.i [2021-12-18 01:23:47,217 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-18 01:23:47,217 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-18 01:23:47,266 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-18 01:23:47,280 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-18 01:23:47,281 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-18 01:23:47,297 INFO L276 IsEmpty]: Start isEmpty. Operand has 136 states, 86 states have (on average 1.1627906976744187) internal successors, (100), 86 states have internal predecessors, (100), 34 states have call successors, (34), 15 states have call predecessors, (34), 15 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2021-12-18 01:23:47,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-12-18 01:23:47,307 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:23:47,308 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:23:47,310 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:23:47,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:23:47,315 INFO L85 PathProgramCache]: Analyzing trace with hash -555983859, now seen corresponding path program 1 times [2021-12-18 01:23:47,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:23:47,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290010590] [2021-12-18 01:23:47,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:23:47,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:23:47,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:47,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 01:23:47,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:47,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 01:23:47,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:47,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 01:23:47,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:47,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:23:47,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:47,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-18 01:23:47,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:47,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-18 01:23:47,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:47,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-18 01:23:47,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:48,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-18 01:23:48,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:48,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:23:48,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:48,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 01:23:48,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:48,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 01:23:48,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:48,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:23:48,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:48,137 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-12-18 01:23:48,137 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:23:48,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290010590] [2021-12-18 01:23:48,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290010590] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:23:48,138 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:23:48,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 01:23:48,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699812252] [2021-12-18 01:23:48,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:23:48,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 01:23:48,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:23:48,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 01:23:48,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-18 01:23:48,176 INFO L87 Difference]: Start difference. First operand has 136 states, 86 states have (on average 1.1627906976744187) internal successors, (100), 86 states have internal predecessors, (100), 34 states have call successors, (34), 15 states have call predecessors, (34), 15 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-18 01:23:48,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:23:48,569 INFO L93 Difference]: Finished difference Result 283 states and 370 transitions. [2021-12-18 01:23:48,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-18 01:23:48,572 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 74 [2021-12-18 01:23:48,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:23:48,580 INFO L225 Difference]: With dead ends: 283 [2021-12-18 01:23:48,581 INFO L226 Difference]: Without dead ends: 147 [2021-12-18 01:23:48,584 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-18 01:23:48,587 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 99 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-18 01:23:48,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 198 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-18 01:23:48,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-12-18 01:23:48,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 130. [2021-12-18 01:23:48,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 80 states have (on average 1.15) internal successors, (92), 81 states have internal predecessors, (92), 34 states have call successors, (34), 15 states have call predecessors, (34), 15 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2021-12-18 01:23:48,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 159 transitions. [2021-12-18 01:23:48,631 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 159 transitions. Word has length 74 [2021-12-18 01:23:48,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:23:48,632 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 159 transitions. [2021-12-18 01:23:48,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-18 01:23:48,632 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 159 transitions. [2021-12-18 01:23:48,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-12-18 01:23:48,638 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:23:48,638 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:23:48,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-18 01:23:48,639 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:23:48,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:23:48,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1001240943, now seen corresponding path program 1 times [2021-12-18 01:23:48,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:23:48,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006838357] [2021-12-18 01:23:48,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:23:48,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:23:48,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:48,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 01:23:48,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:48,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 01:23:48,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:48,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 01:23:48,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:48,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:23:48,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:48,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-18 01:23:48,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:48,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-18 01:23:48,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:48,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-18 01:23:48,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:48,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-18 01:23:48,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:49,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:23:49,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:49,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 01:23:49,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:49,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 01:23:49,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:49,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:23:49,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:49,147 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-12-18 01:23:49,148 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:23:49,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006838357] [2021-12-18 01:23:49,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006838357] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:23:49,148 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:23:49,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-18 01:23:49,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848294614] [2021-12-18 01:23:49,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:23:49,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 01:23:49,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:23:49,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 01:23:49,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-18 01:23:49,152 INFO L87 Difference]: Start difference. First operand 130 states and 159 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) [2021-12-18 01:23:49,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:23:49,688 INFO L93 Difference]: Finished difference Result 196 states and 238 transitions. [2021-12-18 01:23:49,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 01:23:49,689 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) Word has length 74 [2021-12-18 01:23:49,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:23:49,691 INFO L225 Difference]: With dead ends: 196 [2021-12-18 01:23:49,691 INFO L226 Difference]: Without dead ends: 152 [2021-12-18 01:23:49,692 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-18 01:23:49,693 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 101 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-18 01:23:49,693 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 470 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-18 01:23:49,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-12-18 01:23:49,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 135. [2021-12-18 01:23:49,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 84 states have (on average 1.1428571428571428) internal successors, (96), 85 states have internal predecessors, (96), 34 states have call successors, (34), 15 states have call predecessors, (34), 16 states have return successors, (34), 34 states have call predecessors, (34), 33 states have call successors, (34) [2021-12-18 01:23:49,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 164 transitions. [2021-12-18 01:23:49,707 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 164 transitions. Word has length 74 [2021-12-18 01:23:49,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:23:49,707 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 164 transitions. [2021-12-18 01:23:49,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) [2021-12-18 01:23:49,708 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 164 transitions. [2021-12-18 01:23:49,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-12-18 01:23:49,710 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:23:49,710 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:23:49,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-18 01:23:49,711 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:23:49,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:23:49,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1994019405, now seen corresponding path program 1 times [2021-12-18 01:23:49,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:23:49,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626783677] [2021-12-18 01:23:49,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:23:49,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:23:49,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:49,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 01:23:49,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:49,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 01:23:49,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:49,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 01:23:49,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:49,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:23:49,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:49,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-18 01:23:49,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:49,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-18 01:23:49,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:49,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-18 01:23:49,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:49,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-18 01:23:49,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:49,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:23:49,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:49,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 01:23:49,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:50,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 01:23:50,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:50,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:23:50,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:50,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 01:23:50,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:50,039 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-12-18 01:23:50,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:23:50,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626783677] [2021-12-18 01:23:50,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626783677] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:23:50,040 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:23:50,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-18 01:23:50,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280121464] [2021-12-18 01:23:50,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:23:50,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-18 01:23:50,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:23:50,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-18 01:23:50,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-18 01:23:50,042 INFO L87 Difference]: Start difference. First operand 135 states and 164 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2021-12-18 01:23:50,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:23:50,703 INFO L93 Difference]: Finished difference Result 217 states and 267 transitions. [2021-12-18 01:23:50,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-18 01:23:50,703 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 80 [2021-12-18 01:23:50,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:23:50,706 INFO L225 Difference]: With dead ends: 217 [2021-12-18 01:23:50,706 INFO L226 Difference]: Without dead ends: 178 [2021-12-18 01:23:50,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-12-18 01:23:50,707 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 180 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-18 01:23:50,708 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [192 Valid, 590 Invalid, 550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-18 01:23:50,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-12-18 01:23:50,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 140. [2021-12-18 01:23:50,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 88 states have (on average 1.1363636363636365) internal successors, (100), 89 states have internal predecessors, (100), 34 states have call successors, (34), 15 states have call predecessors, (34), 17 states have return successors, (35), 35 states have call predecessors, (35), 33 states have call successors, (35) [2021-12-18 01:23:50,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 169 transitions. [2021-12-18 01:23:50,721 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 169 transitions. Word has length 80 [2021-12-18 01:23:50,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:23:50,722 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 169 transitions. [2021-12-18 01:23:50,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2021-12-18 01:23:50,722 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 169 transitions. [2021-12-18 01:23:50,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-12-18 01:23:50,724 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:23:50,724 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:23:50,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-18 01:23:50,724 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:23:50,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:23:50,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1920697878, now seen corresponding path program 1 times [2021-12-18 01:23:50,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:23:50,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890999360] [2021-12-18 01:23:50,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:23:50,726 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:23:50,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:50,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 01:23:50,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:50,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 01:23:50,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:50,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 01:23:50,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:51,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:23:51,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:51,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-18 01:23:51,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:51,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-18 01:23:51,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:51,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-18 01:23:51,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:51,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-18 01:23:51,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:51,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:23:51,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:51,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 01:23:51,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:51,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 01:23:51,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:51,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:23:51,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:51,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 01:23:51,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:51,143 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-12-18 01:23:51,144 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:23:51,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890999360] [2021-12-18 01:23:51,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890999360] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:23:51,144 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:23:51,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-18 01:23:51,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906212038] [2021-12-18 01:23:51,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:23:51,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-18 01:23:51,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:23:51,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-18 01:23:51,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-12-18 01:23:51,147 INFO L87 Difference]: Start difference. First operand 140 states and 169 transitions. Second operand has 14 states, 13 states have (on average 3.076923076923077) internal successors, (40), 9 states have internal predecessors, (40), 4 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-18 01:23:52,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:23:52,200 INFO L93 Difference]: Finished difference Result 178 states and 219 transitions. [2021-12-18 01:23:52,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-18 01:23:52,208 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.076923076923077) internal successors, (40), 9 states have internal predecessors, (40), 4 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) Word has length 82 [2021-12-18 01:23:52,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:23:52,209 INFO L225 Difference]: With dead ends: 178 [2021-12-18 01:23:52,210 INFO L226 Difference]: Without dead ends: 161 [2021-12-18 01:23:52,210 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=382, Unknown=0, NotChecked=0, Total=462 [2021-12-18 01:23:52,211 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 185 mSDsluCounter, 843 mSDsCounter, 0 mSdLazyCounter, 828 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 982 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-18 01:23:52,211 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [197 Valid, 982 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 828 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-18 01:23:52,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-12-18 01:23:52,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 126. [2021-12-18 01:23:52,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 77 states have (on average 1.1168831168831168) internal successors, (86), 78 states have internal predecessors, (86), 33 states have call successors, (33), 15 states have call predecessors, (33), 15 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2021-12-18 01:23:52,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 151 transitions. [2021-12-18 01:23:52,223 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 151 transitions. Word has length 82 [2021-12-18 01:23:52,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:23:52,224 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 151 transitions. [2021-12-18 01:23:52,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.076923076923077) internal successors, (40), 9 states have internal predecessors, (40), 4 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-18 01:23:52,224 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 151 transitions. [2021-12-18 01:23:52,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-18 01:23:52,225 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:23:52,225 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:23:52,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-18 01:23:52,226 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:23:52,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:23:52,226 INFO L85 PathProgramCache]: Analyzing trace with hash -870191708, now seen corresponding path program 1 times [2021-12-18 01:23:52,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:23:52,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466538325] [2021-12-18 01:23:52,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:23:52,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:23:52,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:52,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 01:23:52,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:52,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 01:23:52,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:52,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 01:23:52,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:52,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:23:52,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:52,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-18 01:23:52,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:52,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-18 01:23:52,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:52,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-18 01:23:52,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:52,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-18 01:23:52,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:52,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-18 01:23:52,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:52,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 01:23:52,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:52,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:23:52,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:52,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-18 01:23:52,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:52,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:23:52,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:52,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:23:52,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:52,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 01:23:52,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:52,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 01:23:52,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:52,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-18 01:23:52,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:52,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:23:52,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:52,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-18 01:23:52,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:52,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-18 01:23:52,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:52,709 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-12-18 01:23:52,709 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:23:52,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466538325] [2021-12-18 01:23:52,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466538325] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:23:52,710 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:23:52,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-18 01:23:52,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987050801] [2021-12-18 01:23:52,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:23:52,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-18 01:23:52,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:23:52,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-18 01:23:52,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-18 01:23:52,712 INFO L87 Difference]: Start difference. First operand 126 states and 151 transitions. Second operand has 10 states, 10 states have (on average 5.8) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (22), 6 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-18 01:23:53,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:23:53,442 INFO L93 Difference]: Finished difference Result 206 states and 249 transitions. [2021-12-18 01:23:53,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-18 01:23:53,442 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (22), 6 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) Word has length 123 [2021-12-18 01:23:53,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:23:53,444 INFO L225 Difference]: With dead ends: 206 [2021-12-18 01:23:53,444 INFO L226 Difference]: Without dead ends: 151 [2021-12-18 01:23:53,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2021-12-18 01:23:53,445 INFO L933 BasicCegarLoop]: 131 mSDtfsCounter, 159 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-18 01:23:53,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [170 Valid, 570 Invalid, 582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-18 01:23:53,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-12-18 01:23:53,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 131. [2021-12-18 01:23:53,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 81 states have (on average 1.1111111111111112) internal successors, (90), 82 states have internal predecessors, (90), 33 states have call successors, (33), 15 states have call predecessors, (33), 16 states have return successors, (33), 33 states have call predecessors, (33), 32 states have call successors, (33) [2021-12-18 01:23:53,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 156 transitions. [2021-12-18 01:23:53,457 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 156 transitions. Word has length 123 [2021-12-18 01:23:53,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:23:53,458 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 156 transitions. [2021-12-18 01:23:53,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (22), 6 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-18 01:23:53,458 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 156 transitions. [2021-12-18 01:23:53,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-12-18 01:23:53,460 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:23:53,460 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:23:53,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-18 01:23:53,460 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:23:53,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:23:53,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1724885987, now seen corresponding path program 1 times [2021-12-18 01:23:53,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:23:53,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044666966] [2021-12-18 01:23:53,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:23:53,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:23:53,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:53,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 01:23:53,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:53,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 01:23:53,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:53,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 01:23:53,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:53,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:23:53,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:53,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-18 01:23:53,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:53,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-18 01:23:53,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:53,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-18 01:23:53,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:53,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-18 01:23:53,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:53,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-18 01:23:53,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:53,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 01:23:53,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:53,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:23:53,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:53,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-18 01:23:53,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:53,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:23:53,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:53,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:23:53,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:53,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 01:23:53,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:53,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 01:23:53,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:53,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-18 01:23:53,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:53,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:23:53,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:53,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-18 01:23:53,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:53,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-18 01:23:53,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:53,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-18 01:23:53,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:53,829 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-12-18 01:23:53,829 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:23:53,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044666966] [2021-12-18 01:23:53,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044666966] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:23:53,830 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:23:53,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-18 01:23:53,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570994272] [2021-12-18 01:23:53,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:23:53,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-18 01:23:53,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:23:53,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-18 01:23:53,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-12-18 01:23:53,831 INFO L87 Difference]: Start difference. First operand 131 states and 156 transitions. Second operand has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (23), 7 states have call predecessors, (23), 2 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) [2021-12-18 01:23:54,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:23:54,649 INFO L93 Difference]: Finished difference Result 212 states and 257 transitions. [2021-12-18 01:23:54,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-18 01:23:54,649 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (23), 7 states have call predecessors, (23), 2 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) Word has length 129 [2021-12-18 01:23:54,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:23:54,651 INFO L225 Difference]: With dead ends: 212 [2021-12-18 01:23:54,651 INFO L226 Difference]: Without dead ends: 143 [2021-12-18 01:23:54,652 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2021-12-18 01:23:54,653 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 276 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-18 01:23:54,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [291 Valid, 572 Invalid, 731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-18 01:23:54,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-12-18 01:23:54,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 124. [2021-12-18 01:23:54,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 76 states have (on average 1.0921052631578947) internal successors, (83), 77 states have internal predecessors, (83), 32 states have call successors, (32), 15 states have call predecessors, (32), 15 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2021-12-18 01:23:54,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 146 transitions. [2021-12-18 01:23:54,661 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 146 transitions. Word has length 129 [2021-12-18 01:23:54,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:23:54,662 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 146 transitions. [2021-12-18 01:23:54,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (23), 7 states have call predecessors, (23), 2 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) [2021-12-18 01:23:54,662 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 146 transitions. [2021-12-18 01:23:54,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-18 01:23:54,663 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:23:54,663 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:23:54,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-18 01:23:54,664 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:23:54,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:23:54,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1745997560, now seen corresponding path program 1 times [2021-12-18 01:23:54,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:23:54,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437621535] [2021-12-18 01:23:54,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:23:54,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:23:54,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:54,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 01:23:54,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:54,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 01:23:54,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:54,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 01:23:54,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:54,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:23:54,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:54,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-18 01:23:54,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:54,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-18 01:23:54,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:54,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-18 01:23:54,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:54,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-18 01:23:54,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:54,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-18 01:23:54,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:55,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 01:23:55,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:55,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:23:55,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:55,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-18 01:23:55,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:55,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:23:55,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:55,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:23:55,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:55,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 01:23:55,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:55,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 01:23:55,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:55,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-18 01:23:55,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:55,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:23:55,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:55,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 01:23:55,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:55,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:23:55,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:55,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-18 01:23:55,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:55,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-18 01:23:55,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:55,513 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2021-12-18 01:23:55,513 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:23:55,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437621535] [2021-12-18 01:23:55,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437621535] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:23:55,514 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:23:55,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-12-18 01:23:55,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706498950] [2021-12-18 01:23:55,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:23:55,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-12-18 01:23:55,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:23:55,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-12-18 01:23:55,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=415, Unknown=0, NotChecked=0, Total=462 [2021-12-18 01:23:55,515 INFO L87 Difference]: Start difference. First operand 124 states and 146 transitions. Second operand has 22 states, 20 states have (on average 3.25) internal successors, (65), 17 states have internal predecessors, (65), 8 states have call successors, (24), 6 states have call predecessors, (24), 7 states have return successors, (22), 10 states have call predecessors, (22), 8 states have call successors, (22) [2021-12-18 01:23:57,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:23:57,252 INFO L93 Difference]: Finished difference Result 190 states and 229 transitions. [2021-12-18 01:23:57,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-12-18 01:23:57,252 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 3.25) internal successors, (65), 17 states have internal predecessors, (65), 8 states have call successors, (24), 6 states have call predecessors, (24), 7 states have return successors, (22), 10 states have call predecessors, (22), 8 states have call successors, (22) Word has length 134 [2021-12-18 01:23:57,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:23:57,254 INFO L225 Difference]: With dead ends: 190 [2021-12-18 01:23:57,254 INFO L226 Difference]: Without dead ends: 143 [2021-12-18 01:23:57,255 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=172, Invalid=1388, Unknown=0, NotChecked=0, Total=1560 [2021-12-18 01:23:57,256 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 87 mSDsluCounter, 1259 mSDsCounter, 0 mSdLazyCounter, 1481 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 1386 SdHoareTripleChecker+Invalid, 1540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-18 01:23:57,256 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 1386 Invalid, 1540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1481 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-18 01:23:57,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-12-18 01:23:57,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 137. [2021-12-18 01:23:57,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 85 states have (on average 1.0941176470588236) internal successors, (93), 88 states have internal predecessors, (93), 34 states have call successors, (34), 15 states have call predecessors, (34), 17 states have return successors, (35), 33 states have call predecessors, (35), 33 states have call successors, (35) [2021-12-18 01:23:57,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 162 transitions. [2021-12-18 01:23:57,266 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 162 transitions. Word has length 134 [2021-12-18 01:23:57,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:23:57,267 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 162 transitions. [2021-12-18 01:23:57,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 3.25) internal successors, (65), 17 states have internal predecessors, (65), 8 states have call successors, (24), 6 states have call predecessors, (24), 7 states have return successors, (22), 10 states have call predecessors, (22), 8 states have call successors, (22) [2021-12-18 01:23:57,267 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 162 transitions. [2021-12-18 01:23:57,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-12-18 01:23:57,269 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:23:57,269 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:23:57,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-18 01:23:57,269 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:23:57,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:23:57,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1524709556, now seen corresponding path program 1 times [2021-12-18 01:23:57,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:23:57,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628523890] [2021-12-18 01:23:57,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:23:57,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:23:57,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:57,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 01:23:57,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:57,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 01:23:57,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:57,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 01:23:57,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:57,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:23:57,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:57,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-18 01:23:57,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:57,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-18 01:23:57,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:57,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-18 01:23:57,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:57,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-18 01:23:57,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:57,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-18 01:23:57,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:57,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 01:23:57,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:57,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:23:57,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:57,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 01:23:57,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:57,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-18 01:23:57,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:57,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:23:57,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:57,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:23:57,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:57,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 01:23:57,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:57,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 01:23:57,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:57,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-18 01:23:57,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:57,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:23:57,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:57,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 01:23:57,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:57,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:23:57,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:57,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-18 01:23:57,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:57,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-18 01:23:57,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:57,619 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2021-12-18 01:23:57,619 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:23:57,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628523890] [2021-12-18 01:23:57,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628523890] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:23:57,619 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:23:57,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-18 01:23:57,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779881764] [2021-12-18 01:23:57,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:23:57,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-18 01:23:57,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:23:57,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-18 01:23:57,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-12-18 01:23:57,621 INFO L87 Difference]: Start difference. First operand 137 states and 162 transitions. Second operand has 12 states, 12 states have (on average 5.25) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (24), 7 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-18 01:23:58,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:23:58,391 INFO L93 Difference]: Finished difference Result 225 states and 261 transitions. [2021-12-18 01:23:58,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-18 01:23:58,391 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.25) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (24), 7 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 2 states have call successors, (22) Word has length 140 [2021-12-18 01:23:58,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:23:58,393 INFO L225 Difference]: With dead ends: 225 [2021-12-18 01:23:58,393 INFO L226 Difference]: Without dead ends: 119 [2021-12-18 01:23:58,394 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2021-12-18 01:23:58,394 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 91 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 584 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-18 01:23:58,395 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 584 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-18 01:23:58,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-12-18 01:23:58,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2021-12-18 01:23:58,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 73 states have (on average 1.082191780821918) internal successors, (79), 74 states have internal predecessors, (79), 31 states have call successors, (31), 14 states have call predecessors, (31), 14 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-12-18 01:23:58,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 140 transitions. [2021-12-18 01:23:58,402 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 140 transitions. Word has length 140 [2021-12-18 01:23:58,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:23:58,403 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 140 transitions. [2021-12-18 01:23:58,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.25) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (24), 7 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-18 01:23:58,403 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 140 transitions. [2021-12-18 01:23:58,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-18 01:23:58,404 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:23:58,405 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:23:58,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-18 01:23:58,405 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:23:58,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:23:58,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1517224244, now seen corresponding path program 1 times [2021-12-18 01:23:58,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:23:58,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243967747] [2021-12-18 01:23:58,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:23:58,406 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:23:58,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:58,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 01:23:58,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:58,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 01:23:58,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:58,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 01:23:58,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:58,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:23:58,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:58,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-18 01:23:58,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:58,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-18 01:23:58,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:58,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-18 01:23:58,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:58,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-18 01:23:58,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:58,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-18 01:23:58,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:58,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 01:23:58,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:58,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:23:58,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:58,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-18 01:23:58,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:58,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:23:58,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:58,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:23:58,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:58,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 01:23:58,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:58,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 01:23:58,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:58,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-18 01:23:58,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:58,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:23:58,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:58,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 01:23:58,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:58,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:23:58,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:58,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-18 01:23:58,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:58,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-18 01:23:58,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:58,833 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2021-12-18 01:23:58,833 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:23:58,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243967747] [2021-12-18 01:23:58,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243967747] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:23:58,833 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:23:58,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-18 01:23:58,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803553415] [2021-12-18 01:23:58,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:23:58,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-18 01:23:58,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:23:58,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-18 01:23:58,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-12-18 01:23:58,835 INFO L87 Difference]: Start difference. First operand 119 states and 140 transitions. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (23), 6 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-18 01:23:59,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:23:59,367 INFO L93 Difference]: Finished difference Result 166 states and 196 transitions. [2021-12-18 01:23:59,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-18 01:23:59,367 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (23), 6 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 135 [2021-12-18 01:23:59,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:23:59,369 INFO L225 Difference]: With dead ends: 166 [2021-12-18 01:23:59,369 INFO L226 Difference]: Without dead ends: 120 [2021-12-18 01:23:59,369 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-12-18 01:23:59,369 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 117 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-18 01:23:59,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 348 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-18 01:23:59,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-12-18 01:23:59,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2021-12-18 01:23:59,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 74 states have (on average 1.0810810810810811) internal successors, (80), 75 states have internal predecessors, (80), 31 states have call successors, (31), 14 states have call predecessors, (31), 14 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-12-18 01:23:59,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 141 transitions. [2021-12-18 01:23:59,377 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 141 transitions. Word has length 135 [2021-12-18 01:23:59,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:23:59,378 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 141 transitions. [2021-12-18 01:23:59,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (23), 6 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-18 01:23:59,378 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 141 transitions. [2021-12-18 01:23:59,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-12-18 01:23:59,380 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:23:59,380 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:23:59,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-18 01:23:59,380 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:23:59,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:23:59,381 INFO L85 PathProgramCache]: Analyzing trace with hash -473758278, now seen corresponding path program 1 times [2021-12-18 01:23:59,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:23:59,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955300798] [2021-12-18 01:23:59,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:23:59,381 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:23:59,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:59,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 01:23:59,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:59,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 01:23:59,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:59,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 01:23:59,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:59,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:23:59,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:59,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-18 01:23:59,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:59,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-18 01:23:59,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:59,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-18 01:23:59,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:59,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-18 01:23:59,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:59,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-18 01:23:59,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:59,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 01:23:59,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:59,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:23:59,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:59,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-18 01:23:59,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:59,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:23:59,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:59,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:23:59,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:59,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 01:23:59,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:59,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 01:23:59,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:59,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-18 01:24:00,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:00,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:24:00,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:00,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 01:24:00,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:00,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:24:00,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:00,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-18 01:24:00,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:00,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-18 01:24:00,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:00,373 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2021-12-18 01:24:00,373 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:24:00,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955300798] [2021-12-18 01:24:00,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955300798] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 01:24:00,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139706896] [2021-12-18 01:24:00,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:24:00,374 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:24:00,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:24:00,376 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 01:24:00,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-18 01:24:00,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:00,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 2931 conjuncts, 118 conjunts are in the unsatisfiable core [2021-12-18 01:24:00,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:24:01,866 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 [2021-12-18 01:24:06,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:24:06,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:24:07,009 INFO L354 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2021-12-18 01:24:07,010 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 33 [2021-12-18 01:24:07,109 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-12-18 01:24:07,110 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 45 treesize of output 35 [2021-12-18 01:24:08,000 INFO L354 Elim1Store]: treesize reduction 53, result has 13.1 percent of original size [2021-12-18 01:24:08,001 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 111 treesize of output 69 [2021-12-18 01:24:08,131 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-12-18 01:24:08,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 01:24:12,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1139706896] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 01:24:12,282 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 01:24:12,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 37] total 57 [2021-12-18 01:24:12,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183620964] [2021-12-18 01:24:12,282 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 01:24:12,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2021-12-18 01:24:12,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:24:12,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2021-12-18 01:24:12,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=4118, Unknown=3, NotChecked=0, Total=4290 [2021-12-18 01:24:12,285 INFO L87 Difference]: Start difference. First operand 120 states and 141 transitions. Second operand has 57 states, 50 states have (on average 2.48) internal successors, (124), 42 states have internal predecessors, (124), 15 states have call successors, (43), 10 states have call predecessors, (43), 16 states have return successors, (40), 19 states have call predecessors, (40), 14 states have call successors, (40) [2021-12-18 01:24:17,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:24:17,184 INFO L93 Difference]: Finished difference Result 174 states and 206 transitions. [2021-12-18 01:24:17,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-12-18 01:24:17,188 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 50 states have (on average 2.48) internal successors, (124), 42 states have internal predecessors, (124), 15 states have call successors, (43), 10 states have call predecessors, (43), 16 states have return successors, (40), 19 states have call predecessors, (40), 14 states have call successors, (40) Word has length 136 [2021-12-18 01:24:17,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:24:17,193 INFO L225 Difference]: With dead ends: 174 [2021-12-18 01:24:17,193 INFO L226 Difference]: Without dead ends: 123 [2021-12-18 01:24:17,196 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 144 SyntacticMatches, 1 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1686 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=464, Invalid=9039, Unknown=3, NotChecked=0, Total=9506 [2021-12-18 01:24:17,198 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 223 mSDsluCounter, 1766 mSDsCounter, 0 mSdLazyCounter, 3710 mSolverCounterSat, 245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 1849 SdHoareTripleChecker+Invalid, 4172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 245 IncrementalHoareTripleChecker+Valid, 3710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 217 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-18 01:24:17,199 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [224 Valid, 1849 Invalid, 4172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [245 Valid, 3710 Invalid, 0 Unknown, 217 Unchecked, 2.7s Time] [2021-12-18 01:24:17,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-12-18 01:24:17,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 121. [2021-12-18 01:24:17,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 75 states have (on average 1.08) internal successors, (81), 76 states have internal predecessors, (81), 31 states have call successors, (31), 14 states have call predecessors, (31), 14 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-12-18 01:24:17,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 142 transitions. [2021-12-18 01:24:17,213 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 142 transitions. Word has length 136 [2021-12-18 01:24:17,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:24:17,215 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 142 transitions. [2021-12-18 01:24:17,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 50 states have (on average 2.48) internal successors, (124), 42 states have internal predecessors, (124), 15 states have call successors, (43), 10 states have call predecessors, (43), 16 states have return successors, (40), 19 states have call predecessors, (40), 14 states have call successors, (40) [2021-12-18 01:24:17,215 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 142 transitions. [2021-12-18 01:24:17,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-12-18 01:24:17,217 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:24:17,218 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:24:17,252 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-18 01:24:17,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-18 01:24:17,443 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:24:17,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:24:17,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1103785842, now seen corresponding path program 2 times [2021-12-18 01:24:17,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:24:17,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001936253] [2021-12-18 01:24:17,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:24:17,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:24:17,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:17,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 01:24:17,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:17,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 01:24:17,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:17,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 01:24:17,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:17,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:24:17,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:17,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-18 01:24:17,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:17,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-18 01:24:17,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:17,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-18 01:24:17,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:17,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-18 01:24:17,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:17,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-18 01:24:17,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:17,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 01:24:17,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:17,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:24:17,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:17,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-18 01:24:17,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:17,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:24:17,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:17,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:24:17,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:18,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 01:24:18,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:18,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 01:24:18,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:18,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-18 01:24:18,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:18,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:24:18,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:18,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 01:24:18,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:18,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:24:18,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:18,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-18 01:24:18,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:18,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-18 01:24:18,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:18,452 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 28 proven. 3 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2021-12-18 01:24:18,452 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:24:18,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001936253] [2021-12-18 01:24:18,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001936253] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 01:24:18,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509743162] [2021-12-18 01:24:18,453 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-18 01:24:18,453 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:24:18,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:24:18,454 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 01:24:18,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-18 01:24:19,336 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-18 01:24:19,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 01:24:19,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 3059 conjuncts, 80 conjunts are in the unsatisfiable core [2021-12-18 01:24:19,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:24:19,689 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 [2021-12-18 01:24:25,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:24:25,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:24:25,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:24:25,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:24:25,455 INFO L354 Elim1Store]: treesize reduction 42, result has 44.0 percent of original size [2021-12-18 01:24:25,456 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 57 [2021-12-18 01:24:25,543 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-12-18 01:24:25,543 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 45 treesize of output 35 [2021-12-18 01:24:26,314 INFO L354 Elim1Store]: treesize reduction 53, result has 13.1 percent of original size [2021-12-18 01:24:26,315 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 111 treesize of output 69 [2021-12-18 01:24:26,454 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2021-12-18 01:24:26,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 01:24:29,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509743162] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 01:24:29,138 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 01:24:29,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 27] total 49 [2021-12-18 01:24:29,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126442958] [2021-12-18 01:24:29,139 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 01:24:29,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2021-12-18 01:24:29,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:24:29,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-12-18 01:24:29,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=3161, Unknown=2, NotChecked=0, Total=3306 [2021-12-18 01:24:29,141 INFO L87 Difference]: Start difference. First operand 121 states and 142 transitions. Second operand has 49 states, 44 states have (on average 2.4318181818181817) internal successors, (107), 36 states have internal predecessors, (107), 11 states have call successors, (37), 9 states have call predecessors, (37), 12 states have return successors, (33), 15 states have call predecessors, (33), 10 states have call successors, (33) [2021-12-18 01:24:43,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:24:43,197 INFO L93 Difference]: Finished difference Result 173 states and 205 transitions. [2021-12-18 01:24:43,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-12-18 01:24:43,198 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 44 states have (on average 2.4318181818181817) internal successors, (107), 36 states have internal predecessors, (107), 11 states have call successors, (37), 9 states have call predecessors, (37), 12 states have return successors, (33), 15 states have call predecessors, (33), 10 states have call successors, (33) Word has length 137 [2021-12-18 01:24:43,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:24:43,199 INFO L225 Difference]: With dead ends: 173 [2021-12-18 01:24:43,199 INFO L226 Difference]: Without dead ends: 122 [2021-12-18 01:24:43,201 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1047 ImplicationChecksByTransitivity, 19.7s TimeCoverageRelationStatistics Valid=327, Invalid=6641, Unknown=4, NotChecked=0, Total=6972 [2021-12-18 01:24:43,202 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 101 mSDsluCounter, 2113 mSDsCounter, 0 mSdLazyCounter, 2258 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 2212 SdHoareTripleChecker+Invalid, 3133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 2258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 764 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-18 01:24:43,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 2212 Invalid, 3133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 2258 Invalid, 0 Unknown, 764 Unchecked, 1.8s Time] [2021-12-18 01:24:43,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-12-18 01:24:43,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2021-12-18 01:24:43,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 76 states have (on average 1.0789473684210527) internal successors, (82), 77 states have internal predecessors, (82), 31 states have call successors, (31), 14 states have call predecessors, (31), 14 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-12-18 01:24:43,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 143 transitions. [2021-12-18 01:24:43,210 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 143 transitions. Word has length 137 [2021-12-18 01:24:43,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:24:43,210 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 143 transitions. [2021-12-18 01:24:43,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 44 states have (on average 2.4318181818181817) internal successors, (107), 36 states have internal predecessors, (107), 11 states have call successors, (37), 9 states have call predecessors, (37), 12 states have return successors, (33), 15 states have call predecessors, (33), 10 states have call successors, (33) [2021-12-18 01:24:43,211 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 143 transitions. [2021-12-18 01:24:43,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-12-18 01:24:43,212 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:24:43,212 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:24:43,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-18 01:24:43,435 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,SelfDestructingSolverStorable10 [2021-12-18 01:24:43,435 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:24:43,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:24:43,436 INFO L85 PathProgramCache]: Analyzing trace with hash 840196154, now seen corresponding path program 3 times [2021-12-18 01:24:43,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:24:43,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092379966] [2021-12-18 01:24:43,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:24:43,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:24:43,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:43,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 01:24:43,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:43,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 01:24:43,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:43,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 01:24:43,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:43,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:24:43,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:43,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-18 01:24:43,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:43,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-18 01:24:43,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:43,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-18 01:24:43,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:43,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-18 01:24:43,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:43,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-18 01:24:43,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:43,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 01:24:43,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:43,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:24:43,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:44,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-18 01:24:44,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:44,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:24:44,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:44,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:24:44,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:44,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 01:24:44,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:44,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 01:24:44,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:44,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-18 01:24:44,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:44,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:24:44,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:44,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 01:24:44,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:44,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:24:44,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:44,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-18 01:24:44,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:44,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-18 01:24:44,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:24:44,572 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 28 proven. 6 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2021-12-18 01:24:44,572 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:24:44,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092379966] [2021-12-18 01:24:44,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092379966] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 01:24:44,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523001935] [2021-12-18 01:24:44,573 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-18 01:24:44,573 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:24:44,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:24:44,576 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 01:24:44,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-18 01:24:47,998 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-12-18 01:24:47,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 01:24:48,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 2859 conjuncts, 114 conjunts are in the unsatisfiable core [2021-12-18 01:24:48,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:24:48,392 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 [2021-12-18 01:24:50,913 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1925 Int) (v_ArrVal_1932 (Array Int Int)) (|v_#Ultimate.C_memcpy_#t~loopctr1326_18| Int) (|v_#Ultimate.C_memcpy_#t~loopctr1326_17| Int)) (and (<= (+ |v_#Ultimate.C_memcpy_#t~loopctr1326_18| 1) |c_#Ultimate.C_memcpy_#t~loopctr1326|) (= |c_#memory_int| (store |c_old(#memory_int)| |c_#Ultimate.C_memcpy_dest.base| (store (store (select |c_old(#memory_int)| |c_#Ultimate.C_memcpy_dest.base|) (+ |c_#Ultimate.C_memcpy_dest.offset| |v_#Ultimate.C_memcpy_#t~loopctr1326_17|) v_ArrVal_1925) (+ |c_#Ultimate.C_memcpy_dest.offset| |v_#Ultimate.C_memcpy_#t~loopctr1326_18|) (select (select (store |c_old(#memory_int)| |c_#Ultimate.C_memcpy_dest.base| v_ArrVal_1932) |c_#Ultimate.C_memcpy_src.base|) (+ |c_#Ultimate.C_memcpy_src.offset| |v_#Ultimate.C_memcpy_#t~loopctr1326_18|))))) (<= (+ |v_#Ultimate.C_memcpy_#t~loopctr1326_17| 1) |v_#Ultimate.C_memcpy_#t~loopctr1326_18|) (<= 0 |v_#Ultimate.C_memcpy_#t~loopctr1326_17|))) is different from true [2021-12-18 01:24:51,027 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1925 Int) (|#Ultimate.C_memcpy_src.base| Int) (|#Ultimate.C_memcpy_src.offset| Int) (v_ArrVal_1932 (Array Int Int)) (v_ArrVal_1939 Int) (|v_#Ultimate.C_memcpy_#t~loopctr1326_19| Int) (|v_#Ultimate.C_memcpy_#t~loopctr1326_18| Int) (|v_#Ultimate.C_memcpy_#t~loopctr1326_17| Int)) (and (<= (+ |v_#Ultimate.C_memcpy_#t~loopctr1326_18| 1) |v_#Ultimate.C_memcpy_#t~loopctr1326_19|) (= |c_#memory_int| (store |c_old(#memory_int)| |c_#Ultimate.C_memcpy_dest.base| (let ((.cse0 (store (store (select |c_old(#memory_int)| |c_#Ultimate.C_memcpy_dest.base|) (+ |c_#Ultimate.C_memcpy_dest.offset| |v_#Ultimate.C_memcpy_#t~loopctr1326_17|) v_ArrVal_1925) (+ |c_#Ultimate.C_memcpy_dest.offset| |v_#Ultimate.C_memcpy_#t~loopctr1326_18|) (select (select (store |c_old(#memory_int)| |c_#Ultimate.C_memcpy_dest.base| v_ArrVal_1932) |#Ultimate.C_memcpy_src.base|) (+ |#Ultimate.C_memcpy_src.offset| |v_#Ultimate.C_memcpy_#t~loopctr1326_18|)))) (.cse1 (+ |v_#Ultimate.C_memcpy_#t~loopctr1326_19| |c_#Ultimate.C_memcpy_dest.offset|))) (store .cse0 .cse1 (let ((.cse2 (+ |#Ultimate.C_memcpy_src.offset| |v_#Ultimate.C_memcpy_#t~loopctr1326_19|))) (select (select (store |c_old(#memory_int)| |c_#Ultimate.C_memcpy_dest.base| (store .cse0 .cse1 (select (select (store |c_old(#memory_int)| |c_#Ultimate.C_memcpy_dest.base| (store .cse0 .cse1 (select (select (store |c_old(#memory_int)| |c_#Ultimate.C_memcpy_dest.base| (store .cse0 .cse1 (select (select (store |c_old(#memory_int)| |c_#Ultimate.C_memcpy_dest.base| (store .cse0 .cse1 v_ArrVal_1939)) |#Ultimate.C_memcpy_src.base|) .cse2))) |#Ultimate.C_memcpy_src.base|) .cse2))) |#Ultimate.C_memcpy_src.base|) .cse2))) |#Ultimate.C_memcpy_src.base|) .cse2)))))) (<= (+ |v_#Ultimate.C_memcpy_#t~loopctr1326_17| 1) |v_#Ultimate.C_memcpy_#t~loopctr1326_18|) (<= 0 |v_#Ultimate.C_memcpy_#t~loopctr1326_17|))) is different from true [2021-12-18 01:24:51,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:24:51,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:24:52,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:24:52,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:24:52,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:24:52,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:24:52,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:24:52,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:24:52,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:24:52,924 INFO L354 Elim1Store]: treesize reduction 2681, result has 23.4 percent of original size [2021-12-18 01:24:52,925 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 8 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 11 new quantified variables, introduced 27 case distinctions, treesize of input 288920 treesize of output 145033 [2021-12-18 01:24:53,781 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 46 [2021-12-18 01:29:42,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:29:42,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:29:42,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:29:42,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:29:42,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:29:42,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:29:42,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:29:42,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:29:42,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:29:42,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:29:42,771 INFO L354 Elim1Store]: treesize reduction 54, result has 67.7 percent of original size [2021-12-18 01:29:42,771 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 10 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 11 case distinctions, treesize of input 177 treesize of output 249 Killed by 15